./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix028_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix028_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix028_tso.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix028_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:31:17,553 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:31:17,588 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:31:17,591 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:31:17,591 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:31:17,605 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:31:17,606 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:31:17,606 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:31:17,606 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:31:17,607 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:31:17,607 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:31:17,607 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:31:17,608 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:31:17,608 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:31:17,608 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:31:17,622 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:31:17,622 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:31:17,623 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:31:17,623 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:31:17,623 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:31:17,624 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:31:17,624 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:31:17,624 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:31:17,625 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:31:17,625 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:31:17,625 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:31:17,625 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:31:17,625 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:31:17,626 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:31:17,626 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:31:17,626 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:31:17,626 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:31:17,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:31:17,627 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:31:17,627 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:31:17,627 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:31:17,627 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:31:17,628 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:31:17,628 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:31:17,628 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:31:17,628 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:31:17,629 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:31:17,629 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:31:17,629 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:31:17,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:31:17,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:31:17,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:31:17,878 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:31:17,878 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:31:17,879 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix028_tso.i [2024-06-28 01:31:18,911 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:31:19,160 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:31:19,161 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix028_tso.i [2024-06-28 01:31:19,185 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57bbba622/e4a205e579fd49e892c5f1f5e472c9b4/FLAGa39b67898 [2024-06-28 01:31:19,202 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57bbba622/e4a205e579fd49e892c5f1f5e472c9b4 [2024-06-28 01:31:19,204 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:31:19,204 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:31:19,205 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix028_tso.yml/witness.yml [2024-06-28 01:31:19,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:31:19,364 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:31:19,365 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:31:19,365 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:31:19,371 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:31:19,372 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:31:19" (1/2) ... [2024-06-28 01:31:19,373 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1692b23a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:31:19, skipping insertion in model container [2024-06-28 01:31:19,373 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:31:19" (1/2) ... [2024-06-28 01:31:19,374 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1b6a5109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:31:19, skipping insertion in model container [2024-06-28 01:31:19,375 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:31:19" (2/2) ... [2024-06-28 01:31:19,377 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1692b23a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:31:19, skipping insertion in model container [2024-06-28 01:31:19,377 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:31:19" (2/2) ... [2024-06-28 01:31:19,377 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:31:19,446 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:31:19,447 INFO L97 edCorrectnessWitness]: Location invariant before [L836-L836] (((((((((((((((((! multithreaded || y$read_delayed_var == 0) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! 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$read_delayed_var == 0) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && (z == 0 || z == 1)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2)) [2024-06-28 01:31:19,448 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] (((((((((((((((((! multithreaded || y$read_delayed_var == 0) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && y$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_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && (z == 0 || z == 1)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2)) [2024-06-28 01:31:19,448 INFO L97 edCorrectnessWitness]: Location invariant before [L837-L837] (((((((((((((((((! multithreaded || y$read_delayed_var == 0) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! 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$read_delayed_var == 0) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && (z == 0 || z == 1)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2)) [2024-06-28 01:31:19,448 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:31:19,448 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-28 01:31:19,484 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:31:19,640 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/mix028_tso.i[944,957] [2024-06-28 01:31:19,850 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:31:19,866 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:31:19,898 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/mix028_tso.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:31:19,976 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:31:20,011 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:31:20,011 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:31:20 WrapperNode [2024-06-28 01:31:20,012 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:31:20,012 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:31:20,013 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:31:20,013 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:31:20,018 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:31:20" (1/1) ... [2024-06-28 01:31:20,032 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:31:20" (1/1) ... [2024-06-28 01:31:20,073 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 162 [2024-06-28 01:31:20,083 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:31:20,084 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:31:20,084 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:31:20,084 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:31:20,092 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:31:20" (1/1) ... [2024-06-28 01:31:20,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:31:20" (1/1) ... [2024-06-28 01:31:20,095 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:31:20" (1/1) ... [2024-06-28 01:31:20,111 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 01:31:20,114 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:31:20" (1/1) ... [2024-06-28 01:31:20,115 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:31:20" (1/1) ... [2024-06-28 01:31:20,128 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:31:20" (1/1) ... [2024-06-28 01:31:20,136 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:31:20" (1/1) ... [2024-06-28 01:31:20,142 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:31:20" (1/1) ... [2024-06-28 01:31:20,143 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:31:20" (1/1) ... [2024-06-28 01:31:20,146 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:31:20,149 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:31:20,150 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:31:20,150 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:31:20,150 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:31:20" (1/1) ... [2024-06-28 01:31:20,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:31:20,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:31:20,174 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 01:31:20,218 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 01:31:20,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:31:20,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:31:20,238 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:31:20,238 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:31:20,238 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:31:20,238 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:31:20,238 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:31:20,238 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:31:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:31:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:31:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:31:20,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:31:20,241 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 01:31:20,404 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:31:20,406 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:31:20,840 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:31:20,840 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:31:21,001 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:31:21,001 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:31:21,002 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:31:21 BoogieIcfgContainer [2024-06-28 01:31:21,002 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:31:21,005 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:31:21,005 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:31:21,008 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:31:21,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:31:19" (1/4) ... [2024-06-28 01:31:21,009 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422b627d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:31:21, skipping insertion in model container [2024-06-28 01:31:21,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:31:19" (2/4) ... [2024-06-28 01:31:21,010 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422b627d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:31:21, skipping insertion in model container [2024-06-28 01:31:21,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:31:20" (3/4) ... [2024-06-28 01:31:21,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422b627d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:31:21, skipping insertion in model container [2024-06-28 01:31:21,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:31:21" (4/4) ... [2024-06-28 01:31:21,017 INFO L112 eAbstractionObserver]: Analyzing ICFG mix028_tso.i [2024-06-28 01:31:21,044 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:31:21,044 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:31:21,044 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:31:21,123 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:31:21,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 01:31:21,171 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-28 01:31:21,171 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:31:21,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 76 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-28 01:31:21,174 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 01:31:21,176 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-06-28 01:31:21,182 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:31:21,186 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;@39bc745f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:31:21,187 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:31:21,189 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:31:21,190 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 01:31:21,190 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:31:21,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:21,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:31:21,191 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 01:31:21,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:21,194 INFO L85 PathProgramCache]: Analyzing trace with hash 382641757, now seen corresponding path program 1 times [2024-06-28 01:31:21,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:21,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114412710] [2024-06-28 01:31:21,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:21,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:22,086 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 01:31:22,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:22,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114412710] [2024-06-28 01:31:22,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114412710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:22,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:22,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:31:22,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593723582] [2024-06-28 01:31:22,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:22,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:31:22,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:22,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:31:22,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:31:22,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:31:22,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:22,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:22,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:31:22,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:22,960 INFO L124 PetriNetUnfolderBase]: 4180/6718 cut-off events. [2024-06-28 01:31:22,960 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-28 01:31:22,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12793 conditions, 6718 events. 4180/6718 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 42840 event pairs, 3456 based on Foata normal form. 211/6401 useless extension candidates. Maximal degree in co-relation 12781. Up to 5985 conditions per place. [2024-06-28 01:31:22,995 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 43 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-06-28 01:31:22,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 229 flow [2024-06-28 01:31:22,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:31:22,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:31:23,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-06-28 01:31:23,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6737588652482269 [2024-06-28 01:31:23,007 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 95 transitions. [2024-06-28 01:31:23,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 229 flow [2024-06-28 01:31:23,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 59 transitions, 224 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:31:23,014 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 129 flow [2024-06-28 01:31:23,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-06-28 01:31:23,020 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-28 01:31:23,020 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 129 flow [2024-06-28 01:31:23,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:23,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:23,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:23,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:31:23,021 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 01:31:23,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:23,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1648341226, now seen corresponding path program 1 times [2024-06-28 01:31:23,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:23,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71328996] [2024-06-28 01:31:23,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:23,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:23,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:23,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:23,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71328996] [2024-06-28 01:31:23,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71328996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:23,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:23,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:31:23,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572832114] [2024-06-28 01:31:23,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:23,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:31:23,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:23,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:31:23,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:31:23,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:31:23,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:23,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:23,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:31:23,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:24,317 INFO L124 PetriNetUnfolderBase]: 4775/6852 cut-off events. [2024-06-28 01:31:24,317 INFO L125 PetriNetUnfolderBase]: For 916/916 co-relation queries the response was YES. [2024-06-28 01:31:24,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15286 conditions, 6852 events. 4775/6852 cut-off events. For 916/916 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 37572 event pairs, 2338 based on Foata normal form. 3/6612 useless extension candidates. Maximal degree in co-relation 15274. Up to 6792 conditions per place. [2024-06-28 01:31:24,344 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 56 selfloop transitions, 9 changer transitions 0/75 dead transitions. [2024-06-28 01:31:24,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 75 transitions, 329 flow [2024-06-28 01:31:24,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:31:24,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:31:24,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-06-28 01:31:24,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-06-28 01:31:24,349 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 129 flow. Second operand 4 states and 120 transitions. [2024-06-28 01:31:24,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 75 transitions, 329 flow [2024-06-28 01:31:24,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 75 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:31:24,351 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 175 flow [2024-06-28 01:31:24,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-06-28 01:31:24,352 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2024-06-28 01:31:24,352 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 175 flow [2024-06-28 01:31:24,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:24,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:24,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:24,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:31:24,355 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 01:31:24,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:24,364 INFO L85 PathProgramCache]: Analyzing trace with hash 441030584, now seen corresponding path program 1 times [2024-06-28 01:31:24,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:24,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143328894] [2024-06-28 01:31:24,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:24,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:24,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:24,942 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 01:31:24,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:24,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143328894] [2024-06-28 01:31:24,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143328894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:24,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:24,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:31:24,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673766858] [2024-06-28 01:31:24,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:24,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:31:24,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:24,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:31:24,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:31:24,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:31:24,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 175 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:24,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:24,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:31:24,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:25,746 INFO L124 PetriNetUnfolderBase]: 4805/6909 cut-off events. [2024-06-28 01:31:25,746 INFO L125 PetriNetUnfolderBase]: For 2549/2549 co-relation queries the response was YES. [2024-06-28 01:31:25,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16907 conditions, 6909 events. 4805/6909 cut-off events. For 2549/2549 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 38430 event pairs, 1669 based on Foata normal form. 5/6660 useless extension candidates. Maximal degree in co-relation 16893. Up to 6710 conditions per place. [2024-06-28 01:31:25,778 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 74 selfloop transitions, 21 changer transitions 0/105 dead transitions. [2024-06-28 01:31:25,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 105 transitions, 533 flow [2024-06-28 01:31:25,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:31:25,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:31:25,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 157 transitions. [2024-06-28 01:31:25,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6680851063829787 [2024-06-28 01:31:25,792 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 175 flow. Second operand 5 states and 157 transitions. [2024-06-28 01:31:25,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 105 transitions, 533 flow [2024-06-28 01:31:25,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 105 transitions, 514 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 01:31:25,796 INFO L231 Difference]: Finished difference. Result has 61 places, 65 transitions, 304 flow [2024-06-28 01:31:25,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=61, PETRI_TRANSITIONS=65} [2024-06-28 01:31:25,796 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2024-06-28 01:31:25,796 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 65 transitions, 304 flow [2024-06-28 01:31:25,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:25,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:25,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:25,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:31:25,797 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 01:31:25,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:25,797 INFO L85 PathProgramCache]: Analyzing trace with hash 347006865, now seen corresponding path program 1 times [2024-06-28 01:31:25,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:25,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516399716] [2024-06-28 01:31:25,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:25,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:26,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:26,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:26,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516399716] [2024-06-28 01:31:26,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516399716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:26,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:26,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:31:26,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924901040] [2024-06-28 01:31:26,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:26,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:31:26,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:26,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:31:26,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:31:26,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:31:26,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 65 transitions, 304 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:26,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:26,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:31:26,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:27,200 INFO L124 PetriNetUnfolderBase]: 4856/6978 cut-off events. [2024-06-28 01:31:27,200 INFO L125 PetriNetUnfolderBase]: For 6373/6376 co-relation queries the response was YES. [2024-06-28 01:31:27,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19957 conditions, 6978 events. 4856/6978 cut-off events. For 6373/6376 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 38783 event pairs, 1150 based on Foata normal form. 12/6722 useless extension candidates. Maximal degree in co-relation 19940. Up to 6687 conditions per place. [2024-06-28 01:31:27,232 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 83 selfloop transitions, 25 changer transitions 0/118 dead transitions. [2024-06-28 01:31:27,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 118 transitions, 678 flow [2024-06-28 01:31:27,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:31:27,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:31:27,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2024-06-28 01:31:27,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.648936170212766 [2024-06-28 01:31:27,236 INFO L175 Difference]: Start difference. First operand has 61 places, 65 transitions, 304 flow. Second operand 6 states and 183 transitions. [2024-06-28 01:31:27,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 118 transitions, 678 flow [2024-06-28 01:31:27,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 118 transitions, 666 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-28 01:31:27,244 INFO L231 Difference]: Finished difference. Result has 66 places, 68 transitions, 379 flow [2024-06-28 01:31:27,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=379, PETRI_PLACES=66, PETRI_TRANSITIONS=68} [2024-06-28 01:31:27,245 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 13 predicate places. [2024-06-28 01:31:27,246 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 68 transitions, 379 flow [2024-06-28 01:31:27,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:27,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:27,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:27,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:31:27,246 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 01:31:27,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:27,247 INFO L85 PathProgramCache]: Analyzing trace with hash -174660769, now seen corresponding path program 1 times [2024-06-28 01:31:27,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:27,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094771105] [2024-06-28 01:31:27,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:27,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:27,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:27,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:27,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094771105] [2024-06-28 01:31:27,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094771105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:27,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:27,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:31:27,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210375456] [2024-06-28 01:31:27,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:27,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:31:27,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:27,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:31:27,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:31:27,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:31:27,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 68 transitions, 379 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:27,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:27,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:31:27,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:28,584 INFO L124 PetriNetUnfolderBase]: 4782/7048 cut-off events. [2024-06-28 01:31:28,584 INFO L125 PetriNetUnfolderBase]: For 8983/8983 co-relation queries the response was YES. [2024-06-28 01:31:28,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21588 conditions, 7048 events. 4782/7048 cut-off events. For 8983/8983 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 40032 event pairs, 1513 based on Foata normal form. 2/6736 useless extension candidates. Maximal degree in co-relation 21567. Up to 6800 conditions per place. [2024-06-28 01:31:28,621 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 72 selfloop transitions, 10 changer transitions 0/91 dead transitions. [2024-06-28 01:31:28,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 91 transitions, 595 flow [2024-06-28 01:31:28,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:31:28,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:31:28,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-06-28 01:31:28,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361702127659574 [2024-06-28 01:31:28,624 INFO L175 Difference]: Start difference. First operand has 66 places, 68 transitions, 379 flow. Second operand 5 states and 126 transitions. [2024-06-28 01:31:28,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 91 transitions, 595 flow [2024-06-28 01:31:28,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 91 transitions, 526 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 01:31:28,637 INFO L231 Difference]: Finished difference. Result has 67 places, 68 transitions, 339 flow [2024-06-28 01:31:28,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=339, PETRI_PLACES=67, PETRI_TRANSITIONS=68} [2024-06-28 01:31:28,639 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 14 predicate places. [2024-06-28 01:31:28,641 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 68 transitions, 339 flow [2024-06-28 01:31:28,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:28,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:28,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:28,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:31:28,642 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:28,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:28,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1159214049, now seen corresponding path program 1 times [2024-06-28 01:31:28,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:28,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632536389] [2024-06-28 01:31:28,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:28,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:29,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:29,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:29,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632536389] [2024-06-28 01:31:29,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632536389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:29,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:29,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:31:29,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791693667] [2024-06-28 01:31:29,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:29,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:31:29,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:29,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:31:29,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:31:29,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:31:29,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 339 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:29,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:29,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:31:29,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:30,179 INFO L124 PetriNetUnfolderBase]: 4770/7656 cut-off events. [2024-06-28 01:31:30,179 INFO L125 PetriNetUnfolderBase]: For 10233/10233 co-relation queries the response was YES. [2024-06-28 01:31:30,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21811 conditions, 7656 events. 4770/7656 cut-off events. For 10233/10233 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 48817 event pairs, 1994 based on Foata normal form. 4/7148 useless extension candidates. Maximal degree in co-relation 21788. Up to 6763 conditions per place. [2024-06-28 01:31:30,222 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 82 selfloop transitions, 17 changer transitions 0/108 dead transitions. [2024-06-28 01:31:30,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 108 transitions, 705 flow [2024-06-28 01:31:30,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:31:30,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:31:30,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-28 01:31:30,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-28 01:31:30,223 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 339 flow. Second operand 6 states and 147 transitions. [2024-06-28 01:31:30,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 108 transitions, 705 flow [2024-06-28 01:31:30,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 108 transitions, 652 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:31:30,231 INFO L231 Difference]: Finished difference. Result has 71 places, 83 transitions, 478 flow [2024-06-28 01:31:30,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=478, PETRI_PLACES=71, PETRI_TRANSITIONS=83} [2024-06-28 01:31:30,233 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 18 predicate places. [2024-06-28 01:31:30,233 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 83 transitions, 478 flow [2024-06-28 01:31:30,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:30,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:30,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:30,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:31:30,234 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:30,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:30,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1160122031, now seen corresponding path program 1 times [2024-06-28 01:31:30,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:30,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761982280] [2024-06-28 01:31:30,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:30,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:30,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:30,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:30,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761982280] [2024-06-28 01:31:30,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761982280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:30,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:30,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:31:30,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159765480] [2024-06-28 01:31:30,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:30,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:31:30,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:30,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:31:30,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:31:30,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 47 [2024-06-28 01:31:30,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 83 transitions, 478 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 01:31:30,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:30,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 47 [2024-06-28 01:31:30,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:30,565 INFO L124 PetriNetUnfolderBase]: 1487/2975 cut-off events. [2024-06-28 01:31:30,566 INFO L125 PetriNetUnfolderBase]: For 4529/4857 co-relation queries the response was YES. [2024-06-28 01:31:30,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7458 conditions, 2975 events. 1487/2975 cut-off events. For 4529/4857 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 22441 event pairs, 298 based on Foata normal form. 14/2737 useless extension candidates. Maximal degree in co-relation 7434. Up to 1825 conditions per place. [2024-06-28 01:31:30,586 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 31 selfloop transitions, 11 changer transitions 0/82 dead transitions. [2024-06-28 01:31:30,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 82 transitions, 498 flow [2024-06-28 01:31:30,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:31:30,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:31:30,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-06-28 01:31:30,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7304964539007093 [2024-06-28 01:31:30,588 INFO L175 Difference]: Start difference. First operand has 71 places, 83 transitions, 478 flow. Second operand 3 states and 103 transitions. [2024-06-28 01:31:30,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 82 transitions, 498 flow [2024-06-28 01:31:30,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 82 transitions, 484 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-28 01:31:30,594 INFO L231 Difference]: Finished difference. Result has 71 places, 73 transitions, 402 flow [2024-06-28 01:31:30,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=402, PETRI_PLACES=71, PETRI_TRANSITIONS=73} [2024-06-28 01:31:30,596 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 18 predicate places. [2024-06-28 01:31:30,596 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 73 transitions, 402 flow [2024-06-28 01:31:30,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 01:31:30,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:30,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:30,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:31:30,597 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 01:31:30,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:30,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1581617572, now seen corresponding path program 1 times [2024-06-28 01:31:30,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:30,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490045753] [2024-06-28 01:31:30,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:30,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:31,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:31,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:31,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490045753] [2024-06-28 01:31:31,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490045753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:31,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:31,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:31:31,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905268434] [2024-06-28 01:31:31,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:31,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:31:31,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:31,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:31:31,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:31:31,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:31,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 73 transitions, 402 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:31,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:31,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:31,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:31,970 INFO L124 PetriNetUnfolderBase]: 4775/6999 cut-off events. [2024-06-28 01:31:31,970 INFO L125 PetriNetUnfolderBase]: For 14960/14969 co-relation queries the response was YES. [2024-06-28 01:31:31,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21854 conditions, 6999 events. 4775/6999 cut-off events. For 14960/14969 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 39088 event pairs, 1568 based on Foata normal form. 10/6960 useless extension candidates. Maximal degree in co-relation 21828. Up to 6645 conditions per place. [2024-06-28 01:31:32,006 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 77 selfloop transitions, 24 changer transitions 4/113 dead transitions. [2024-06-28 01:31:32,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 113 transitions, 748 flow [2024-06-28 01:31:32,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:31:32,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:31:32,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-28 01:31:32,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390070921985816 [2024-06-28 01:31:32,007 INFO L175 Difference]: Start difference. First operand has 71 places, 73 transitions, 402 flow. Second operand 6 states and 152 transitions. [2024-06-28 01:31:32,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 113 transitions, 748 flow [2024-06-28 01:31:32,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 113 transitions, 724 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:31:32,016 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 460 flow [2024-06-28 01:31:32,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=460, PETRI_PLACES=75, PETRI_TRANSITIONS=75} [2024-06-28 01:31:32,017 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 22 predicate places. [2024-06-28 01:31:32,017 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 460 flow [2024-06-28 01:31:32,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:32,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:32,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:32,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:31:32,017 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 01:31:32,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:32,017 INFO L85 PathProgramCache]: Analyzing trace with hash -345237442, now seen corresponding path program 2 times [2024-06-28 01:31:32,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:32,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545691457] [2024-06-28 01:31:32,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:32,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:32,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:32,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:32,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545691457] [2024-06-28 01:31:32,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545691457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:32,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:32,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:31:32,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093213768] [2024-06-28 01:31:32,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:32,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:31:32,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:32,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:31:32,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:31:32,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:32,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 460 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:32,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:32,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:32,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:33,391 INFO L124 PetriNetUnfolderBase]: 4229/6220 cut-off events. [2024-06-28 01:31:33,391 INFO L125 PetriNetUnfolderBase]: For 14429/14429 co-relation queries the response was YES. [2024-06-28 01:31:33,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19797 conditions, 6220 events. 4229/6220 cut-off events. For 14429/14429 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 34265 event pairs, 1415 based on Foata normal form. 2/6168 useless extension candidates. Maximal degree in co-relation 19769. Up to 5897 conditions per place. [2024-06-28 01:31:33,421 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 72 selfloop transitions, 25 changer transitions 0/105 dead transitions. [2024-06-28 01:31:33,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 105 transitions, 728 flow [2024-06-28 01:31:33,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:31:33,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:31:33,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-28 01:31:33,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-28 01:31:33,426 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 460 flow. Second operand 6 states and 144 transitions. [2024-06-28 01:31:33,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 105 transitions, 728 flow [2024-06-28 01:31:33,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 105 transitions, 691 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 01:31:33,435 INFO L231 Difference]: Finished difference. Result has 77 places, 75 transitions, 482 flow [2024-06-28 01:31:33,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=482, PETRI_PLACES=77, PETRI_TRANSITIONS=75} [2024-06-28 01:31:33,436 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 24 predicate places. [2024-06-28 01:31:33,436 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 75 transitions, 482 flow [2024-06-28 01:31:33,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:33,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:33,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:33,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:31:33,441 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 01:31:33,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:33,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1947644256, now seen corresponding path program 1 times [2024-06-28 01:31:33,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:33,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054026311] [2024-06-28 01:31:33,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:33,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:33,958 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 01:31:33,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:33,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054026311] [2024-06-28 01:31:33,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054026311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:33,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:33,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:31:33,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634628702] [2024-06-28 01:31:33,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:33,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:31:33,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:33,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:31:33,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:31:34,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:34,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 75 transitions, 482 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:34,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:34,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:34,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:34,970 INFO L124 PetriNetUnfolderBase]: 4563/7220 cut-off events. [2024-06-28 01:31:34,971 INFO L125 PetriNetUnfolderBase]: For 18622/18631 co-relation queries the response was YES. [2024-06-28 01:31:34,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22597 conditions, 7220 events. 4563/7220 cut-off events. For 18622/18631 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 43975 event pairs, 1456 based on Foata normal form. 10/7013 useless extension candidates. Maximal degree in co-relation 22568. Up to 5975 conditions per place. [2024-06-28 01:31:35,009 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 118 selfloop transitions, 47 changer transitions 0/173 dead transitions. [2024-06-28 01:31:35,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 173 transitions, 1394 flow [2024-06-28 01:31:35,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:31:35,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:31:35,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 01:31:35,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372340425531915 [2024-06-28 01:31:35,011 INFO L175 Difference]: Start difference. First operand has 77 places, 75 transitions, 482 flow. Second operand 8 states and 202 transitions. [2024-06-28 01:31:35,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 173 transitions, 1394 flow [2024-06-28 01:31:35,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 173 transitions, 1207 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 01:31:35,025 INFO L231 Difference]: Finished difference. Result has 82 places, 110 transitions, 782 flow [2024-06-28 01:31:35,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=782, PETRI_PLACES=82, PETRI_TRANSITIONS=110} [2024-06-28 01:31:35,026 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 29 predicate places. [2024-06-28 01:31:35,027 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 110 transitions, 782 flow [2024-06-28 01:31:35,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:35,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:35,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:35,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:31:35,027 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:35,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:35,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1785503072, now seen corresponding path program 2 times [2024-06-28 01:31:35,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:35,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93155782] [2024-06-28 01:31:35,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:35,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:35,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:35,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:35,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:35,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93155782] [2024-06-28 01:31:35,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93155782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:35,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:35,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:31:35,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637774745] [2024-06-28 01:31:35,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:35,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:31:35,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:35,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:31:35,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:31:35,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:35,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 110 transitions, 782 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:35,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:35,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:35,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:36,738 INFO L124 PetriNetUnfolderBase]: 4715/7442 cut-off events. [2024-06-28 01:31:36,738 INFO L125 PetriNetUnfolderBase]: For 24290/24298 co-relation queries the response was YES. [2024-06-28 01:31:36,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25884 conditions, 7442 events. 4715/7442 cut-off events. For 24290/24298 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 45161 event pairs, 1464 based on Foata normal form. 13/7238 useless extension candidates. Maximal degree in co-relation 25851. Up to 6079 conditions per place. [2024-06-28 01:31:36,783 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 105 selfloop transitions, 59 changer transitions 0/172 dead transitions. [2024-06-28 01:31:36,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 172 transitions, 1437 flow [2024-06-28 01:31:36,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:36,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:36,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 01:31:36,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258358662613982 [2024-06-28 01:31:36,785 INFO L175 Difference]: Start difference. First operand has 82 places, 110 transitions, 782 flow. Second operand 7 states and 173 transitions. [2024-06-28 01:31:36,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 172 transitions, 1437 flow [2024-06-28 01:31:36,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 172 transitions, 1377 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 01:31:36,811 INFO L231 Difference]: Finished difference. Result has 88 places, 125 transitions, 1042 flow [2024-06-28 01:31:36,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1042, PETRI_PLACES=88, PETRI_TRANSITIONS=125} [2024-06-28 01:31:36,812 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 35 predicate places. [2024-06-28 01:31:36,812 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 125 transitions, 1042 flow [2024-06-28 01:31:36,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:36,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:36,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:36,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:31:36,812 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 01:31:36,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:36,813 INFO L85 PathProgramCache]: Analyzing trace with hash -2112187556, now seen corresponding path program 3 times [2024-06-28 01:31:36,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:36,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305327766] [2024-06-28 01:31:36,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:36,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:36,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:37,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:37,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:37,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305327766] [2024-06-28 01:31:37,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305327766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:37,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:37,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:31:37,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598412451] [2024-06-28 01:31:37,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:37,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:31:37,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:37,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:31:37,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:31:37,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:37,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 125 transitions, 1042 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:37,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:37,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:37,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:38,439 INFO L124 PetriNetUnfolderBase]: 4791/7533 cut-off events. [2024-06-28 01:31:38,439 INFO L125 PetriNetUnfolderBase]: For 29194/29196 co-relation queries the response was YES. [2024-06-28 01:31:38,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27820 conditions, 7533 events. 4791/7533 cut-off events. For 29194/29196 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 45559 event pairs, 1474 based on Foata normal form. 6/7311 useless extension candidates. Maximal degree in co-relation 27784. Up to 6117 conditions per place. [2024-06-28 01:31:38,489 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 103 selfloop transitions, 77 changer transitions 0/188 dead transitions. [2024-06-28 01:31:38,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 188 transitions, 1823 flow [2024-06-28 01:31:38,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:38,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:38,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 01:31:38,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258358662613982 [2024-06-28 01:31:38,491 INFO L175 Difference]: Start difference. First operand has 88 places, 125 transitions, 1042 flow. Second operand 7 states and 173 transitions. [2024-06-28 01:31:38,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 188 transitions, 1823 flow [2024-06-28 01:31:38,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 188 transitions, 1697 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-28 01:31:38,532 INFO L231 Difference]: Finished difference. Result has 93 places, 143 transitions, 1316 flow [2024-06-28 01:31:38,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1316, PETRI_PLACES=93, PETRI_TRANSITIONS=143} [2024-06-28 01:31:38,533 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 40 predicate places. [2024-06-28 01:31:38,533 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 143 transitions, 1316 flow [2024-06-28 01:31:38,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:38,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:38,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:38,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:31:38,534 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 01:31:38,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:38,534 INFO L85 PathProgramCache]: Analyzing trace with hash 24895226, now seen corresponding path program 4 times [2024-06-28 01:31:38,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:38,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354020627] [2024-06-28 01:31:38,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:38,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:39,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:39,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:39,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354020627] [2024-06-28 01:31:39,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354020627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:39,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:39,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:31:39,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320723617] [2024-06-28 01:31:39,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:39,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:31:39,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:39,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:31:39,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:31:39,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:39,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 143 transitions, 1316 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:39,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:39,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:39,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:40,224 INFO L124 PetriNetUnfolderBase]: 4775/7520 cut-off events. [2024-06-28 01:31:40,225 INFO L125 PetriNetUnfolderBase]: For 29989/29991 co-relation queries the response was YES. [2024-06-28 01:31:40,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27784 conditions, 7520 events. 4775/7520 cut-off events. For 29989/29991 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 45419 event pairs, 1495 based on Foata normal form. 6/7298 useless extension candidates. Maximal degree in co-relation 27746. Up to 6110 conditions per place. [2024-06-28 01:31:40,271 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 103 selfloop transitions, 75 changer transitions 0/186 dead transitions. [2024-06-28 01:31:40,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 186 transitions, 1854 flow [2024-06-28 01:31:40,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:40,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:40,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 01:31:40,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227963525835866 [2024-06-28 01:31:40,273 INFO L175 Difference]: Start difference. First operand has 93 places, 143 transitions, 1316 flow. Second operand 7 states and 172 transitions. [2024-06-28 01:31:40,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 186 transitions, 1854 flow [2024-06-28 01:31:40,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 186 transitions, 1802 flow, removed 25 selfloop flow, removed 1 redundant places. [2024-06-28 01:31:40,324 INFO L231 Difference]: Finished difference. Result has 99 places, 143 transitions, 1426 flow [2024-06-28 01:31:40,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1426, PETRI_PLACES=99, PETRI_TRANSITIONS=143} [2024-06-28 01:31:40,325 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 46 predicate places. [2024-06-28 01:31:40,325 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 143 transitions, 1426 flow [2024-06-28 01:31:40,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:40,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:40,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:40,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:31:40,326 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:40,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:40,326 INFO L85 PathProgramCache]: Analyzing trace with hash 963740948, now seen corresponding path program 1 times [2024-06-28 01:31:40,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:40,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603279573] [2024-06-28 01:31:40,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:40,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:41,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:41,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:41,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603279573] [2024-06-28 01:31:41,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603279573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:41,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:41,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:31:41,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299545159] [2024-06-28 01:31:41,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:41,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:31:41,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:41,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:31:41,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:31:41,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:31:41,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 143 transitions, 1426 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:41,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:41,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:31:41,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:42,423 INFO L124 PetriNetUnfolderBase]: 4165/6746 cut-off events. [2024-06-28 01:31:42,423 INFO L125 PetriNetUnfolderBase]: For 29880/29882 co-relation queries the response was YES. [2024-06-28 01:31:42,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25613 conditions, 6746 events. 4165/6746 cut-off events. For 29880/29882 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 41587 event pairs, 1356 based on Foata normal form. 4/6548 useless extension candidates. Maximal degree in co-relation 25572. Up to 5875 conditions per place. [2024-06-28 01:31:42,460 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 153 selfloop transitions, 17 changer transitions 0/179 dead transitions. [2024-06-28 01:31:42,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 179 transitions, 1886 flow [2024-06-28 01:31:42,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:42,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:42,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 01:31:42,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015197568389058 [2024-06-28 01:31:42,462 INFO L175 Difference]: Start difference. First operand has 99 places, 143 transitions, 1426 flow. Second operand 7 states and 165 transitions. [2024-06-28 01:31:42,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 179 transitions, 1886 flow [2024-06-28 01:31:42,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 179 transitions, 1720 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 01:31:42,492 INFO L231 Difference]: Finished difference. Result has 101 places, 146 transitions, 1334 flow [2024-06-28 01:31:42,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1260, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1334, PETRI_PLACES=101, PETRI_TRANSITIONS=146} [2024-06-28 01:31:42,493 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 48 predicate places. [2024-06-28 01:31:42,493 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 146 transitions, 1334 flow [2024-06-28 01:31:42,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:42,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:42,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:42,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:31:42,493 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:42,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:42,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1813849367, now seen corresponding path program 1 times [2024-06-28 01:31:42,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:42,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358050892] [2024-06-28 01:31:42,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:42,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:43,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:43,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:43,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358050892] [2024-06-28 01:31:43,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358050892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:43,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:43,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:31:43,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520466212] [2024-06-28 01:31:43,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:43,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:31:43,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:43,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:31:43,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:31:43,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:31:43,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 146 transitions, 1334 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:43,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:43,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:31:43,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:43,816 INFO L124 PetriNetUnfolderBase]: 4170/6747 cut-off events. [2024-06-28 01:31:43,817 INFO L125 PetriNetUnfolderBase]: For 30859/30861 co-relation queries the response was YES. [2024-06-28 01:31:43,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25695 conditions, 6747 events. 4170/6747 cut-off events. For 30859/30861 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 41497 event pairs, 1636 based on Foata normal form. 1/6561 useless extension candidates. Maximal degree in co-relation 25653. Up to 5948 conditions per place. [2024-06-28 01:31:43,864 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 150 selfloop transitions, 9 changer transitions 0/168 dead transitions. [2024-06-28 01:31:43,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 168 transitions, 1766 flow [2024-06-28 01:31:43,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:31:43,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:31:43,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-06-28 01:31:43,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851063829787234 [2024-06-28 01:31:43,867 INFO L175 Difference]: Start difference. First operand has 101 places, 146 transitions, 1334 flow. Second operand 5 states and 114 transitions. [2024-06-28 01:31:43,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 168 transitions, 1766 flow [2024-06-28 01:31:43,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 168 transitions, 1710 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 01:31:43,932 INFO L231 Difference]: Finished difference. Result has 102 places, 153 transitions, 1389 flow [2024-06-28 01:31:43,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1284, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1389, PETRI_PLACES=102, PETRI_TRANSITIONS=153} [2024-06-28 01:31:43,949 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 49 predicate places. [2024-06-28 01:31:43,950 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 153 transitions, 1389 flow [2024-06-28 01:31:43,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:43,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:43,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:43,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:31:43,950 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 01:31:43,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:43,951 INFO L85 PathProgramCache]: Analyzing trace with hash 483980834, now seen corresponding path program 1 times [2024-06-28 01:31:43,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:43,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964228748] [2024-06-28 01:31:43,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:43,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:44,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:44,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:44,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964228748] [2024-06-28 01:31:44,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964228748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:44,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:44,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:31:44,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44808812] [2024-06-28 01:31:44,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:44,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:31:44,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:44,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:31:44,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:31:44,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:44,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 153 transitions, 1389 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:44,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:44,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:44,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:45,680 INFO L124 PetriNetUnfolderBase]: 4948/7799 cut-off events. [2024-06-28 01:31:45,680 INFO L125 PetriNetUnfolderBase]: For 42329/42337 co-relation queries the response was YES. [2024-06-28 01:31:45,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31203 conditions, 7799 events. 4948/7799 cut-off events. For 42329/42337 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 47406 event pairs, 1494 based on Foata normal form. 9/7590 useless extension candidates. Maximal degree in co-relation 31159. Up to 6256 conditions per place. [2024-06-28 01:31:45,738 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 120 selfloop transitions, 88 changer transitions 0/216 dead transitions. [2024-06-28 01:31:45,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 216 transitions, 2261 flow [2024-06-28 01:31:45,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:45,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:45,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 01:31:45,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-28 01:31:45,741 INFO L175 Difference]: Start difference. First operand has 102 places, 153 transitions, 1389 flow. Second operand 7 states and 175 transitions. [2024-06-28 01:31:45,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 216 transitions, 2261 flow [2024-06-28 01:31:45,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 216 transitions, 2238 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-28 01:31:45,781 INFO L231 Difference]: Finished difference. Result has 108 places, 170 transitions, 1805 flow [2024-06-28 01:31:45,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1366, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1805, PETRI_PLACES=108, PETRI_TRANSITIONS=170} [2024-06-28 01:31:45,781 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 55 predicate places. [2024-06-28 01:31:45,781 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 170 transitions, 1805 flow [2024-06-28 01:31:45,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:45,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:45,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:45,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:31:45,782 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 01:31:45,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:45,783 INFO L85 PathProgramCache]: Analyzing trace with hash 483975254, now seen corresponding path program 2 times [2024-06-28 01:31:45,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:45,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831952628] [2024-06-28 01:31:45,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:45,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:46,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:46,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:46,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831952628] [2024-06-28 01:31:46,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831952628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:46,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:46,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:31:46,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411785762] [2024-06-28 01:31:46,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:46,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:31:46,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:46,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:31:46,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:31:46,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:46,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 170 transitions, 1805 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:46,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:46,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:46,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:47,491 INFO L124 PetriNetUnfolderBase]: 4928/7795 cut-off events. [2024-06-28 01:31:47,492 INFO L125 PetriNetUnfolderBase]: For 47542/47554 co-relation queries the response was YES. [2024-06-28 01:31:47,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32324 conditions, 7795 events. 4928/7795 cut-off events. For 47542/47554 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 47600 event pairs, 1520 based on Foata normal form. 15/7592 useless extension candidates. Maximal degree in co-relation 32277. Up to 6240 conditions per place. [2024-06-28 01:31:47,544 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 117 selfloop transitions, 94 changer transitions 0/219 dead transitions. [2024-06-28 01:31:47,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 219 transitions, 2464 flow [2024-06-28 01:31:47,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:47,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:47,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 01:31:47,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5379939209726444 [2024-06-28 01:31:47,546 INFO L175 Difference]: Start difference. First operand has 108 places, 170 transitions, 1805 flow. Second operand 7 states and 177 transitions. [2024-06-28 01:31:47,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 219 transitions, 2464 flow [2024-06-28 01:31:47,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 219 transitions, 2315 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 01:31:47,608 INFO L231 Difference]: Finished difference. Result has 113 places, 173 transitions, 1945 flow [2024-06-28 01:31:47,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1658, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1945, PETRI_PLACES=113, PETRI_TRANSITIONS=173} [2024-06-28 01:31:47,608 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 60 predicate places. [2024-06-28 01:31:47,609 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 173 transitions, 1945 flow [2024-06-28 01:31:47,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:47,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:47,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:47,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:31:47,609 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:47,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:47,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1053303578, now seen corresponding path program 3 times [2024-06-28 01:31:47,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:47,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128680099] [2024-06-28 01:31:47,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:47,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:48,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:48,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:48,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128680099] [2024-06-28 01:31:48,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128680099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:48,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:48,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:31:48,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153724499] [2024-06-28 01:31:48,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:48,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:31:48,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:48,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:31:48,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:31:48,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:48,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 173 transitions, 1945 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:48,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:48,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:48,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:49,311 INFO L124 PetriNetUnfolderBase]: 4912/7753 cut-off events. [2024-06-28 01:31:49,311 INFO L125 PetriNetUnfolderBase]: For 51338/51346 co-relation queries the response was YES. [2024-06-28 01:31:49,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32755 conditions, 7753 events. 4912/7753 cut-off events. For 51338/51346 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 47199 event pairs, 1507 based on Foata normal form. 10/7533 useless extension candidates. Maximal degree in co-relation 32706. Up to 6227 conditions per place. [2024-06-28 01:31:49,363 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 117 selfloop transitions, 88 changer transitions 0/213 dead transitions. [2024-06-28 01:31:49,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 213 transitions, 2513 flow [2024-06-28 01:31:49,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:49,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:49,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 01:31:49,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045592705167173 [2024-06-28 01:31:49,365 INFO L175 Difference]: Start difference. First operand has 113 places, 173 transitions, 1945 flow. Second operand 7 states and 166 transitions. [2024-06-28 01:31:49,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 213 transitions, 2513 flow [2024-06-28 01:31:49,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 213 transitions, 2365 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 01:31:49,423 INFO L231 Difference]: Finished difference. Result has 116 places, 175 transitions, 2012 flow [2024-06-28 01:31:49,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1799, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2012, PETRI_PLACES=116, PETRI_TRANSITIONS=175} [2024-06-28 01:31:49,424 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 63 predicate places. [2024-06-28 01:31:49,424 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 175 transitions, 2012 flow [2024-06-28 01:31:49,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:49,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:49,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:49,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:31:49,425 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 01:31:49,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:49,425 INFO L85 PathProgramCache]: Analyzing trace with hash 394757090, now seen corresponding path program 1 times [2024-06-28 01:31:49,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:49,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906596360] [2024-06-28 01:31:49,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:49,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:49,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:50,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:50,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:50,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906596360] [2024-06-28 01:31:50,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906596360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:50,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:50,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:31:50,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505927152] [2024-06-28 01:31:50,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:50,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:31:50,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:50,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:31:50,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:31:50,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:31:50,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 175 transitions, 2012 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:50,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:50,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:31:50,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:51,334 INFO L124 PetriNetUnfolderBase]: 4315/6974 cut-off events. [2024-06-28 01:31:51,335 INFO L125 PetriNetUnfolderBase]: For 49422/49424 co-relation queries the response was YES. [2024-06-28 01:31:51,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29891 conditions, 6974 events. 4315/6974 cut-off events. For 49422/49424 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 42813 event pairs, 1670 based on Foata normal form. 1/6788 useless extension candidates. Maximal degree in co-relation 29841. Up to 6135 conditions per place. [2024-06-28 01:31:51,385 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 177 selfloop transitions, 13 changer transitions 0/199 dead transitions. [2024-06-28 01:31:51,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 199 transitions, 2486 flow [2024-06-28 01:31:51,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:31:51,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:31:51,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-28 01:31:51,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4787234042553192 [2024-06-28 01:31:51,388 INFO L175 Difference]: Start difference. First operand has 116 places, 175 transitions, 2012 flow. Second operand 6 states and 135 transitions. [2024-06-28 01:31:51,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 199 transitions, 2486 flow [2024-06-28 01:31:51,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 199 transitions, 2345 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:31:51,444 INFO L231 Difference]: Finished difference. Result has 118 places, 179 transitions, 1944 flow [2024-06-28 01:31:51,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1871, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1944, PETRI_PLACES=118, PETRI_TRANSITIONS=179} [2024-06-28 01:31:51,444 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 65 predicate places. [2024-06-28 01:31:51,445 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 179 transitions, 1944 flow [2024-06-28 01:31:51,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:51,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:51,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:51,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:31:51,446 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:51,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:51,446 INFO L85 PathProgramCache]: Analyzing trace with hash -989830817, now seen corresponding path program 1 times [2024-06-28 01:31:51,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:51,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079814292] [2024-06-28 01:31:51,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:51,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:51,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:52,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:52,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:52,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079814292] [2024-06-28 01:31:52,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079814292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:52,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:52,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:31:52,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659498871] [2024-06-28 01:31:52,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:52,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:31:52,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:52,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:31:52,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:31:52,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:52,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 179 transitions, 1944 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:52,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:52,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:52,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:53,093 INFO L124 PetriNetUnfolderBase]: 4964/7827 cut-off events. [2024-06-28 01:31:53,094 INFO L125 PetriNetUnfolderBase]: For 59652/59660 co-relation queries the response was YES. [2024-06-28 01:31:53,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33787 conditions, 7827 events. 4964/7827 cut-off events. For 59652/59660 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 47468 event pairs, 1204 based on Foata normal form. 8/7615 useless extension candidates. Maximal degree in co-relation 33735. Up to 6594 conditions per place. [2024-06-28 01:31:53,151 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 172 selfloop transitions, 48 changer transitions 0/228 dead transitions. [2024-06-28 01:31:53,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 228 transitions, 2640 flow [2024-06-28 01:31:53,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:53,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:53,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 01:31:53,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197568389057751 [2024-06-28 01:31:53,152 INFO L175 Difference]: Start difference. First operand has 118 places, 179 transitions, 1944 flow. Second operand 7 states and 171 transitions. [2024-06-28 01:31:53,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 228 transitions, 2640 flow [2024-06-28 01:31:53,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 228 transitions, 2595 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 01:31:53,218 INFO L231 Difference]: Finished difference. Result has 121 places, 183 transitions, 2050 flow [2024-06-28 01:31:53,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1899, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2050, PETRI_PLACES=121, PETRI_TRANSITIONS=183} [2024-06-28 01:31:53,218 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 68 predicate places. [2024-06-28 01:31:53,218 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 183 transitions, 2050 flow [2024-06-28 01:31:53,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:53,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:53,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:53,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:31:53,219 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:53,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:53,219 INFO L85 PathProgramCache]: Analyzing trace with hash -2129357151, now seen corresponding path program 2 times [2024-06-28 01:31:53,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:53,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513457706] [2024-06-28 01:31:53,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:53,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:53,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:53,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:53,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513457706] [2024-06-28 01:31:53,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513457706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:53,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:53,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:31:53,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201540165] [2024-06-28 01:31:53,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:53,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:31:53,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:53,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:31:53,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:31:53,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:53,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 183 transitions, 2050 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:53,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:53,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:53,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:54,885 INFO L124 PetriNetUnfolderBase]: 4956/7816 cut-off events. [2024-06-28 01:31:54,886 INFO L125 PetriNetUnfolderBase]: For 64687/64695 co-relation queries the response was YES. [2024-06-28 01:31:54,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34460 conditions, 7816 events. 4956/7816 cut-off events. For 64687/64695 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 47348 event pairs, 1562 based on Foata normal form. 8/7602 useless extension candidates. Maximal degree in co-relation 34407. Up to 6741 conditions per place. [2024-06-28 01:31:54,948 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 166 selfloop transitions, 52 changer transitions 0/226 dead transitions. [2024-06-28 01:31:54,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 226 transitions, 2632 flow [2024-06-28 01:31:54,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:54,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:54,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 01:31:54,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513677811550152 [2024-06-28 01:31:54,950 INFO L175 Difference]: Start difference. First operand has 121 places, 183 transitions, 2050 flow. Second operand 7 states and 169 transitions. [2024-06-28 01:31:54,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 226 transitions, 2632 flow [2024-06-28 01:31:55,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 226 transitions, 2561 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 01:31:55,121 INFO L231 Difference]: Finished difference. Result has 125 places, 183 transitions, 2093 flow [2024-06-28 01:31:55,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1979, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2093, PETRI_PLACES=125, PETRI_TRANSITIONS=183} [2024-06-28 01:31:55,121 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 72 predicate places. [2024-06-28 01:31:55,122 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 183 transitions, 2093 flow [2024-06-28 01:31:55,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:55,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:55,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:55,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:31:55,122 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:55,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:55,123 INFO L85 PathProgramCache]: Analyzing trace with hash -2011084773, now seen corresponding path program 1 times [2024-06-28 01:31:55,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:55,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705947726] [2024-06-28 01:31:55,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:55,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:56,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:56,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:56,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705947726] [2024-06-28 01:31:56,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705947726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:56,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:56,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:31:56,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889230869] [2024-06-28 01:31:56,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:56,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:31:56,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:56,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:31:56,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:31:56,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:56,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 183 transitions, 2093 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:56,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:56,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:56,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:57,407 INFO L124 PetriNetUnfolderBase]: 5144/8098 cut-off events. [2024-06-28 01:31:57,407 INFO L125 PetriNetUnfolderBase]: For 73762/73770 co-relation queries the response was YES. [2024-06-28 01:31:57,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36127 conditions, 8098 events. 5144/8098 cut-off events. For 73762/73770 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 49343 event pairs, 1394 based on Foata normal form. 25/7901 useless extension candidates. Maximal degree in co-relation 36072. Up to 6291 conditions per place. [2024-06-28 01:31:57,484 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 132 selfloop transitions, 98 changer transitions 0/238 dead transitions. [2024-06-28 01:31:57,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 238 transitions, 2763 flow [2024-06-28 01:31:57,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:31:57,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:31:57,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 01:31:57,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-28 01:31:57,486 INFO L175 Difference]: Start difference. First operand has 125 places, 183 transitions, 2093 flow. Second operand 8 states and 197 transitions. [2024-06-28 01:31:57,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 238 transitions, 2763 flow [2024-06-28 01:31:57,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 238 transitions, 2649 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 01:31:57,571 INFO L231 Difference]: Finished difference. Result has 127 places, 186 transitions, 2230 flow [2024-06-28 01:31:57,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1979, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2230, PETRI_PLACES=127, PETRI_TRANSITIONS=186} [2024-06-28 01:31:57,572 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 74 predicate places. [2024-06-28 01:31:57,572 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 186 transitions, 2230 flow [2024-06-28 01:31:57,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:57,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:57,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:57,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:31:57,572 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:57,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:57,573 INFO L85 PathProgramCache]: Analyzing trace with hash -658902986, now seen corresponding path program 1 times [2024-06-28 01:31:57,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:57,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744086799] [2024-06-28 01:31:57,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:57,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:58,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:58,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:58,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744086799] [2024-06-28 01:31:58,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744086799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:58,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:58,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:31:58,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976005778] [2024-06-28 01:31:58,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:58,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:31:58,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:58,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:31:58,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:31:58,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:58,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 186 transitions, 2230 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:58,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:58,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:58,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:59,128 INFO L124 PetriNetUnfolderBase]: 5164/8140 cut-off events. [2024-06-28 01:31:59,129 INFO L125 PetriNetUnfolderBase]: For 79425/79431 co-relation queries the response was YES. [2024-06-28 01:31:59,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37647 conditions, 8140 events. 5164/8140 cut-off events. For 79425/79431 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 49450 event pairs, 1842 based on Foata normal form. 7/7926 useless extension candidates. Maximal degree in co-relation 37591. Up to 7327 conditions per place. [2024-06-28 01:31:59,203 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 198 selfloop transitions, 15 changer transitions 0/221 dead transitions. [2024-06-28 01:31:59,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 221 transitions, 2872 flow [2024-06-28 01:31:59,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:31:59,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:31:59,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-28 01:31:59,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475177304964539 [2024-06-28 01:31:59,207 INFO L175 Difference]: Start difference. First operand has 127 places, 186 transitions, 2230 flow. Second operand 6 states and 134 transitions. [2024-06-28 01:31:59,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 221 transitions, 2872 flow [2024-06-28 01:31:59,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 221 transitions, 2655 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 01:31:59,314 INFO L231 Difference]: Finished difference. Result has 128 places, 195 transitions, 2197 flow [2024-06-28 01:31:59,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2021, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2197, PETRI_PLACES=128, PETRI_TRANSITIONS=195} [2024-06-28 01:31:59,315 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 75 predicate places. [2024-06-28 01:31:59,315 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 195 transitions, 2197 flow [2024-06-28 01:31:59,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:59,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:59,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:59,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:31:59,316 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:59,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:59,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1794319915, now seen corresponding path program 2 times [2024-06-28 01:31:59,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:59,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297523534] [2024-06-28 01:31:59,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:59,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:00,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:00,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:00,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297523534] [2024-06-28 01:32:00,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297523534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:00,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:00,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:32:00,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209671504] [2024-06-28 01:32:00,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:00,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:32:00,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:00,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:32:00,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:32:00,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:00,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 195 transitions, 2197 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:00,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:00,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:00,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:01,457 INFO L124 PetriNetUnfolderBase]: 5198/8170 cut-off events. [2024-06-28 01:32:01,457 INFO L125 PetriNetUnfolderBase]: For 82697/82699 co-relation queries the response was YES. [2024-06-28 01:32:01,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38131 conditions, 8170 events. 5198/8170 cut-off events. For 82697/82699 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 49704 event pairs, 1517 based on Foata normal form. 4/7936 useless extension candidates. Maximal degree in co-relation 38073. Up to 6616 conditions per place. [2024-06-28 01:32:01,519 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 133 selfloop transitions, 104 changer transitions 0/245 dead transitions. [2024-06-28 01:32:01,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 245 transitions, 2883 flow [2024-06-28 01:32:01,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:01,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:01,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 01:32:01,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-28 01:32:01,521 INFO L175 Difference]: Start difference. First operand has 128 places, 195 transitions, 2197 flow. Second operand 8 states and 192 transitions. [2024-06-28 01:32:01,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 245 transitions, 2883 flow [2024-06-28 01:32:01,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 245 transitions, 2843 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-28 01:32:01,612 INFO L231 Difference]: Finished difference. Result has 133 places, 198 transitions, 2424 flow [2024-06-28 01:32:01,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2157, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2424, PETRI_PLACES=133, PETRI_TRANSITIONS=198} [2024-06-28 01:32:01,613 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 80 predicate places. [2024-06-28 01:32:01,613 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 198 transitions, 2424 flow [2024-06-28 01:32:01,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:01,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:01,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:01,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:32:01,614 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:01,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:01,614 INFO L85 PathProgramCache]: Analyzing trace with hash 779386399, now seen corresponding path program 3 times [2024-06-28 01:32:01,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:01,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557118422] [2024-06-28 01:32:01,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:01,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:02,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:02,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:02,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557118422] [2024-06-28 01:32:02,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557118422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:02,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:02,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:02,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523366911] [2024-06-28 01:32:02,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:02,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:02,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:02,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:02,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:02,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:02,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 198 transitions, 2424 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:02,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:02,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:02,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:03,885 INFO L124 PetriNetUnfolderBase]: 5232/8209 cut-off events. [2024-06-28 01:32:03,885 INFO L125 PetriNetUnfolderBase]: For 94673/94675 co-relation queries the response was YES. [2024-06-28 01:32:03,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40037 conditions, 8209 events. 5232/8209 cut-off events. For 94673/94675 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 49866 event pairs, 1493 based on Foata normal form. 4/7976 useless extension candidates. Maximal degree in co-relation 39978. Up to 6666 conditions per place. [2024-06-28 01:32:03,946 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 134 selfloop transitions, 106 changer transitions 0/248 dead transitions. [2024-06-28 01:32:03,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 248 transitions, 3124 flow [2024-06-28 01:32:03,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:03,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:03,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 01:32:03,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079787234042553 [2024-06-28 01:32:03,955 INFO L175 Difference]: Start difference. First operand has 133 places, 198 transitions, 2424 flow. Second operand 8 states and 191 transitions. [2024-06-28 01:32:03,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 248 transitions, 3124 flow [2024-06-28 01:32:04,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 248 transitions, 2883 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 01:32:04,058 INFO L231 Difference]: Finished difference. Result has 135 places, 201 transitions, 2460 flow [2024-06-28 01:32:04,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2183, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2460, PETRI_PLACES=135, PETRI_TRANSITIONS=201} [2024-06-28 01:32:04,058 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 82 predicate places. [2024-06-28 01:32:04,059 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 201 transitions, 2460 flow [2024-06-28 01:32:04,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:04,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:04,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:04,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:32:04,060 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:04,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:04,060 INFO L85 PathProgramCache]: Analyzing trace with hash 779683069, now seen corresponding path program 4 times [2024-06-28 01:32:04,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:04,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946748434] [2024-06-28 01:32:04,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:04,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:04,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:04,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:04,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946748434] [2024-06-28 01:32:04,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946748434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:04,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:04,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:04,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659121777] [2024-06-28 01:32:04,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:04,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:04,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:04,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:04,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:04,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:04,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 201 transitions, 2460 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:04,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:04,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:04,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:06,264 INFO L124 PetriNetUnfolderBase]: 5224/8056 cut-off events. [2024-06-28 01:32:06,264 INFO L125 PetriNetUnfolderBase]: For 101320/101322 co-relation queries the response was YES. [2024-06-28 01:32:06,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40456 conditions, 8056 events. 5224/8056 cut-off events. For 101320/101322 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 48189 event pairs, 1346 based on Foata normal form. 4/7870 useless extension candidates. Maximal degree in co-relation 40396. Up to 6266 conditions per place. [2024-06-28 01:32:06,337 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 129 selfloop transitions, 117 changer transitions 0/254 dead transitions. [2024-06-28 01:32:06,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 254 transitions, 3186 flow [2024-06-28 01:32:06,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:06,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:06,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:32:06,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186170212765957 [2024-06-28 01:32:06,339 INFO L175 Difference]: Start difference. First operand has 135 places, 201 transitions, 2460 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:32:06,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 254 transitions, 3186 flow [2024-06-28 01:32:06,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 254 transitions, 2935 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 01:32:06,470 INFO L231 Difference]: Finished difference. Result has 137 places, 204 transitions, 2513 flow [2024-06-28 01:32:06,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2209, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2513, PETRI_PLACES=137, PETRI_TRANSITIONS=204} [2024-06-28 01:32:06,470 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 84 predicate places. [2024-06-28 01:32:06,471 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 204 transitions, 2513 flow [2024-06-28 01:32:06,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:06,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:06,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:06,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:32:06,471 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:06,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:06,472 INFO L85 PathProgramCache]: Analyzing trace with hash -647445386, now seen corresponding path program 2 times [2024-06-28 01:32:06,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:06,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145079680] [2024-06-28 01:32:06,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:06,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:07,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:07,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:07,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145079680] [2024-06-28 01:32:07,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145079680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:07,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:07,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:07,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873541129] [2024-06-28 01:32:07,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:07,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:07,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:07,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:07,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:07,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:07,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 204 transitions, 2513 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:07,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:07,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:07,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:08,197 INFO L124 PetriNetUnfolderBase]: 5229/8096 cut-off events. [2024-06-28 01:32:08,198 INFO L125 PetriNetUnfolderBase]: For 109276/109306 co-relation queries the response was YES. [2024-06-28 01:32:08,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41292 conditions, 8096 events. 5229/8096 cut-off events. For 109276/109306 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 48267 event pairs, 1839 based on Foata normal form. 21/7940 useless extension candidates. Maximal degree in co-relation 41231. Up to 7399 conditions per place. [2024-06-28 01:32:08,274 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 203 selfloop transitions, 20 changer transitions 0/231 dead transitions. [2024-06-28 01:32:08,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 231 transitions, 3111 flow [2024-06-28 01:32:08,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:32:08,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:32:08,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-28 01:32:08,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-06-28 01:32:08,276 INFO L175 Difference]: Start difference. First operand has 137 places, 204 transitions, 2513 flow. Second operand 6 states and 132 transitions. [2024-06-28 01:32:08,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 231 transitions, 3111 flow [2024-06-28 01:32:08,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 231 transitions, 2831 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 01:32:08,417 INFO L231 Difference]: Finished difference. Result has 137 places, 207 transitions, 2327 flow [2024-06-28 01:32:08,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2233, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2327, PETRI_PLACES=137, PETRI_TRANSITIONS=207} [2024-06-28 01:32:08,418 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 84 predicate places. [2024-06-28 01:32:08,418 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 207 transitions, 2327 flow [2024-06-28 01:32:08,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:08,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:08,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:08,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:32:08,419 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:08,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:08,419 INFO L85 PathProgramCache]: Analyzing trace with hash -653183114, now seen corresponding path program 1 times [2024-06-28 01:32:08,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:08,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760878547] [2024-06-28 01:32:08,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:08,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:09,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:09,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:09,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760878547] [2024-06-28 01:32:09,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760878547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:09,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:09,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:09,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921703572] [2024-06-28 01:32:09,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:09,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:09,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:09,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:09,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:09,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:32:09,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 207 transitions, 2327 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:09,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:09,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:32:09,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:10,460 INFO L124 PetriNetUnfolderBase]: 4642/7363 cut-off events. [2024-06-28 01:32:10,460 INFO L125 PetriNetUnfolderBase]: For 97804/97806 co-relation queries the response was YES. [2024-06-28 01:32:10,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37247 conditions, 7363 events. 4642/7363 cut-off events. For 97804/97806 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 44889 event pairs, 1623 based on Foata normal form. 1/7211 useless extension candidates. Maximal degree in co-relation 37185. Up to 6617 conditions per place. [2024-06-28 01:32:10,522 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 213 selfloop transitions, 13 changer transitions 0/235 dead transitions. [2024-06-28 01:32:10,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 235 transitions, 2940 flow [2024-06-28 01:32:10,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:32:10,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:32:10,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-28 01:32:10,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48226950354609927 [2024-06-28 01:32:10,524 INFO L175 Difference]: Start difference. First operand has 137 places, 207 transitions, 2327 flow. Second operand 6 states and 136 transitions. [2024-06-28 01:32:10,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 235 transitions, 2940 flow [2024-06-28 01:32:10,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 235 transitions, 2878 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 01:32:10,662 INFO L231 Difference]: Finished difference. Result has 140 places, 214 transitions, 2399 flow [2024-06-28 01:32:10,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2265, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2399, PETRI_PLACES=140, PETRI_TRANSITIONS=214} [2024-06-28 01:32:10,667 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 87 predicate places. [2024-06-28 01:32:10,667 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 214 transitions, 2399 flow [2024-06-28 01:32:10,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:10,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:10,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:10,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:32:10,668 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 01:32:10,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:10,668 INFO L85 PathProgramCache]: Analyzing trace with hash -647439434, now seen corresponding path program 2 times [2024-06-28 01:32:10,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:10,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581853089] [2024-06-28 01:32:10,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:10,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:11,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:11,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:11,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581853089] [2024-06-28 01:32:11,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581853089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:11,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:11,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:32:11,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911637714] [2024-06-28 01:32:11,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:11,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:32:11,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:11,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:32:11,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:32:11,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:32:11,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 214 transitions, 2399 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 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 01:32:11,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:11,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:32:11,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:12,401 INFO L124 PetriNetUnfolderBase]: 4647/7400 cut-off events. [2024-06-28 01:32:12,401 INFO L125 PetriNetUnfolderBase]: For 104318/104329 co-relation queries the response was YES. [2024-06-28 01:32:12,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38269 conditions, 7400 events. 4647/7400 cut-off events. For 104318/104329 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 45425 event pairs, 2168 based on Foata normal form. 7/7257 useless extension candidates. Maximal degree in co-relation 38205. Up to 6601 conditions per place. [2024-06-28 01:32:12,468 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 210 selfloop transitions, 20 changer transitions 0/239 dead transitions. [2024-06-28 01:32:12,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 239 transitions, 3015 flow [2024-06-28 01:32:12,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:12,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:12,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-06-28 01:32:12,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45592705167173253 [2024-06-28 01:32:12,470 INFO L175 Difference]: Start difference. First operand has 140 places, 214 transitions, 2399 flow. Second operand 7 states and 150 transitions. [2024-06-28 01:32:12,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 239 transitions, 3015 flow [2024-06-28 01:32:12,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 239 transitions, 2972 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 01:32:12,589 INFO L231 Difference]: Finished difference. Result has 145 places, 219 transitions, 2477 flow [2024-06-28 01:32:12,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2358, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2477, PETRI_PLACES=145, PETRI_TRANSITIONS=219} [2024-06-28 01:32:12,591 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 92 predicate places. [2024-06-28 01:32:12,591 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 219 transitions, 2477 flow [2024-06-28 01:32:12,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 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 01:32:12,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:12,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:12,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:32:12,605 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:12,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:12,606 INFO L85 PathProgramCache]: Analyzing trace with hash -392826759, now seen corresponding path program 1 times [2024-06-28 01:32:12,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:12,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373540159] [2024-06-28 01:32:12,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:12,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:13,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:13,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:13,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373540159] [2024-06-28 01:32:13,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373540159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:13,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:13,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:13,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197043669] [2024-06-28 01:32:13,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:13,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:13,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:13,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:13,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:13,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:13,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 219 transitions, 2477 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:13,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:13,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:13,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:14,984 INFO L124 PetriNetUnfolderBase]: 5945/9320 cut-off events. [2024-06-28 01:32:14,985 INFO L125 PetriNetUnfolderBase]: For 149474/149485 co-relation queries the response was YES. [2024-06-28 01:32:15,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48407 conditions, 9320 events. 5945/9320 cut-off events. For 149474/149485 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 57720 event pairs, 1629 based on Foata normal form. 20/9113 useless extension candidates. Maximal degree in co-relation 48341. Up to 6828 conditions per place. [2024-06-28 01:32:15,085 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 195 selfloop transitions, 109 changer transitions 0/312 dead transitions. [2024-06-28 01:32:15,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 312 transitions, 3720 flow [2024-06-28 01:32:15,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:32:15,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:32:15,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-28 01:32:15,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390070921985816 [2024-06-28 01:32:15,088 INFO L175 Difference]: Start difference. First operand has 145 places, 219 transitions, 2477 flow. Second operand 9 states and 228 transitions. [2024-06-28 01:32:15,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 312 transitions, 3720 flow [2024-06-28 01:32:15,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 312 transitions, 3667 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 01:32:15,284 INFO L231 Difference]: Finished difference. Result has 153 places, 235 transitions, 2871 flow [2024-06-28 01:32:15,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2424, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2871, PETRI_PLACES=153, PETRI_TRANSITIONS=235} [2024-06-28 01:32:15,293 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 100 predicate places. [2024-06-28 01:32:15,293 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 235 transitions, 2871 flow [2024-06-28 01:32:15,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:15,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:15,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:15,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:32:15,294 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:15,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:15,294 INFO L85 PathProgramCache]: Analyzing trace with hash -672030637, now seen corresponding path program 2 times [2024-06-28 01:32:15,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:15,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49938031] [2024-06-28 01:32:15,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:15,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:15,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:15,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:15,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49938031] [2024-06-28 01:32:15,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49938031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:15,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:15,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:15,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046286604] [2024-06-28 01:32:15,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:15,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:15,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:15,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:15,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:16,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:16,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 235 transitions, 2871 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:16,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:16,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:16,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:17,625 INFO L124 PetriNetUnfolderBase]: 6249/9759 cut-off events. [2024-06-28 01:32:17,626 INFO L125 PetriNetUnfolderBase]: For 165436/165447 co-relation queries the response was YES. [2024-06-28 01:32:17,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52489 conditions, 9759 events. 6249/9759 cut-off events. For 165436/165447 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 60490 event pairs, 1937 based on Foata normal form. 20/9556 useless extension candidates. Maximal degree in co-relation 52419. Up to 7814 conditions per place. [2024-06-28 01:32:17,707 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 198 selfloop transitions, 106 changer transitions 0/312 dead transitions. [2024-06-28 01:32:17,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 312 transitions, 3932 flow [2024-06-28 01:32:17,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:32:17,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:32:17,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-06-28 01:32:17,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366430260047281 [2024-06-28 01:32:17,710 INFO L175 Difference]: Start difference. First operand has 153 places, 235 transitions, 2871 flow. Second operand 9 states and 227 transitions. [2024-06-28 01:32:17,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 312 transitions, 3932 flow [2024-06-28 01:32:17,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 312 transitions, 3779 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-28 01:32:17,956 INFO L231 Difference]: Finished difference. Result has 159 places, 243 transitions, 3070 flow [2024-06-28 01:32:17,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2718, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3070, PETRI_PLACES=159, PETRI_TRANSITIONS=243} [2024-06-28 01:32:17,957 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 106 predicate places. [2024-06-28 01:32:17,957 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 243 transitions, 3070 flow [2024-06-28 01:32:17,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:17,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:17,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:17,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:32:17,958 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 01:32:17,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:17,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1986694002, now seen corresponding path program 1 times [2024-06-28 01:32:17,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:17,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752264053] [2024-06-28 01:32:17,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:17,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:18,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:18,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:18,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752264053] [2024-06-28 01:32:18,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752264053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:18,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:18,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:18,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818508309] [2024-06-28 01:32:18,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:18,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:18,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:18,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:18,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:18,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:18,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 243 transitions, 3070 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:18,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:18,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:18,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:20,063 INFO L124 PetriNetUnfolderBase]: 6322/9888 cut-off events. [2024-06-28 01:32:20,064 INFO L125 PetriNetUnfolderBase]: For 170471/170490 co-relation queries the response was YES. [2024-06-28 01:32:20,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54186 conditions, 9888 events. 6322/9888 cut-off events. For 170471/170490 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 61716 event pairs, 2260 based on Foata normal form. 18/9679 useless extension candidates. Maximal degree in co-relation 54113. Up to 8858 conditions per place. [2024-06-28 01:32:20,176 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 258 selfloop transitions, 51 changer transitions 0/317 dead transitions. [2024-06-28 01:32:20,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 317 transitions, 4445 flow [2024-06-28 01:32:20,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:20,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:20,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 01:32:20,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946808510638298 [2024-06-28 01:32:20,177 INFO L175 Difference]: Start difference. First operand has 159 places, 243 transitions, 3070 flow. Second operand 8 states and 186 transitions. [2024-06-28 01:32:20,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 317 transitions, 4445 flow [2024-06-28 01:32:20,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 317 transitions, 4258 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 01:32:20,483 INFO L231 Difference]: Finished difference. Result has 164 places, 281 transitions, 3729 flow [2024-06-28 01:32:20,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2913, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3729, PETRI_PLACES=164, PETRI_TRANSITIONS=281} [2024-06-28 01:32:20,484 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 111 predicate places. [2024-06-28 01:32:20,484 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 281 transitions, 3729 flow [2024-06-28 01:32:20,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:20,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:20,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:20,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:32:20,485 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 01:32:20,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:20,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1962866702, now seen corresponding path program 2 times [2024-06-28 01:32:20,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:20,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738204909] [2024-06-28 01:32:20,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:20,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:21,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:21,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:21,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738204909] [2024-06-28 01:32:21,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738204909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:21,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:21,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:21,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425032392] [2024-06-28 01:32:21,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:21,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:21,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:21,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:21,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:21,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:21,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 281 transitions, 3729 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:21,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:21,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:21,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:22,658 INFO L124 PetriNetUnfolderBase]: 6430/10057 cut-off events. [2024-06-28 01:32:22,658 INFO L125 PetriNetUnfolderBase]: For 179839/179852 co-relation queries the response was YES. [2024-06-28 01:32:22,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57493 conditions, 10057 events. 6430/10057 cut-off events. For 179839/179852 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 62719 event pairs, 2282 based on Foata normal form. 12/9838 useless extension candidates. Maximal degree in co-relation 57416. Up to 8971 conditions per place. [2024-06-28 01:32:22,762 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 266 selfloop transitions, 65 changer transitions 0/339 dead transitions. [2024-06-28 01:32:22,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 339 transitions, 4896 flow [2024-06-28 01:32:22,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:22,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:22,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 01:32:22,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4920212765957447 [2024-06-28 01:32:22,764 INFO L175 Difference]: Start difference. First operand has 164 places, 281 transitions, 3729 flow. Second operand 8 states and 185 transitions. [2024-06-28 01:32:22,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 339 transitions, 4896 flow [2024-06-28 01:32:23,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 339 transitions, 4769 flow, removed 58 selfloop flow, removed 2 redundant places. [2024-06-28 01:32:23,113 INFO L231 Difference]: Finished difference. Result has 173 places, 305 transitions, 4205 flow [2024-06-28 01:32:23,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3660, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4205, PETRI_PLACES=173, PETRI_TRANSITIONS=305} [2024-06-28 01:32:23,113 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 120 predicate places. [2024-06-28 01:32:23,113 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 305 transitions, 4205 flow [2024-06-28 01:32:23,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:23,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:23,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:23,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:32:23,114 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:23,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:23,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1150731369, now seen corresponding path program 3 times [2024-06-28 01:32:23,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:23,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023449209] [2024-06-28 01:32:23,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:23,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:23,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:23,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:23,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023449209] [2024-06-28 01:32:23,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023449209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:23,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:23,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:23,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087023104] [2024-06-28 01:32:23,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:23,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:23,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:23,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:23,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:23,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:23,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 305 transitions, 4205 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:23,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:23,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:23,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:25,652 INFO L124 PetriNetUnfolderBase]: 8048/12623 cut-off events. [2024-06-28 01:32:25,652 INFO L125 PetriNetUnfolderBase]: For 236809/236818 co-relation queries the response was YES. [2024-06-28 01:32:25,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72706 conditions, 12623 events. 8048/12623 cut-off events. For 236809/236818 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 81911 event pairs, 1337 based on Foata normal form. 18/12408 useless extension candidates. Maximal degree in co-relation 72624. Up to 7180 conditions per place. [2024-06-28 01:32:25,787 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 242 selfloop transitions, 183 changer transitions 0/433 dead transitions. [2024-06-28 01:32:25,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 433 transitions, 6150 flow [2024-06-28 01:32:25,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:32:25,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:32:25,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-28 01:32:25,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5437352245862884 [2024-06-28 01:32:25,789 INFO L175 Difference]: Start difference. First operand has 173 places, 305 transitions, 4205 flow. Second operand 9 states and 230 transitions. [2024-06-28 01:32:25,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 433 transitions, 6150 flow [2024-06-28 01:32:26,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 433 transitions, 6056 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 01:32:26,237 INFO L231 Difference]: Finished difference. Result has 182 places, 355 transitions, 5197 flow [2024-06-28 01:32:26,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4111, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5197, PETRI_PLACES=182, PETRI_TRANSITIONS=355} [2024-06-28 01:32:26,238 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 129 predicate places. [2024-06-28 01:32:26,238 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 355 transitions, 5197 flow [2024-06-28 01:32:26,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:26,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:26,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:26,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:32:26,239 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:26,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:26,239 INFO L85 PathProgramCache]: Analyzing trace with hash 878891105, now seen corresponding path program 4 times [2024-06-28 01:32:26,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:26,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336914621] [2024-06-28 01:32:26,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:26,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:26,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:26,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:26,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336914621] [2024-06-28 01:32:26,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336914621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:26,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:26,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:26,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509065546] [2024-06-28 01:32:26,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:26,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:26,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:26,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:26,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:26,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:26,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 355 transitions, 5197 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:26,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:26,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:26,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:29,104 INFO L124 PetriNetUnfolderBase]: 8769/13698 cut-off events. [2024-06-28 01:32:29,105 INFO L125 PetriNetUnfolderBase]: For 301505/301518 co-relation queries the response was YES. [2024-06-28 01:32:29,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85476 conditions, 13698 events. 8769/13698 cut-off events. For 301505/301518 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 89542 event pairs, 2848 based on Foata normal form. 30/13492 useless extension candidates. Maximal degree in co-relation 85390. Up to 11007 conditions per place. [2024-06-28 01:32:29,279 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 293 selfloop transitions, 157 changer transitions 0/458 dead transitions. [2024-06-28 01:32:29,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 458 transitions, 7234 flow [2024-06-28 01:32:29,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:32:29,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:32:29,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 231 transitions. [2024-06-28 01:32:29,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460992907801419 [2024-06-28 01:32:29,280 INFO L175 Difference]: Start difference. First operand has 182 places, 355 transitions, 5197 flow. Second operand 9 states and 231 transitions. [2024-06-28 01:32:29,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 458 transitions, 7234 flow [2024-06-28 01:32:29,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 458 transitions, 7021 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-28 01:32:29,924 INFO L231 Difference]: Finished difference. Result has 190 places, 390 transitions, 6143 flow [2024-06-28 01:32:29,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5015, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6143, PETRI_PLACES=190, PETRI_TRANSITIONS=390} [2024-06-28 01:32:29,925 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 137 predicate places. [2024-06-28 01:32:29,925 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 390 transitions, 6143 flow [2024-06-28 01:32:29,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:29,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:29,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:29,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:32:29,926 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:29,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:29,926 INFO L85 PathProgramCache]: Analyzing trace with hash 879038975, now seen corresponding path program 5 times [2024-06-28 01:32:29,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:29,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162324825] [2024-06-28 01:32:29,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:29,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:30,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:30,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:30,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162324825] [2024-06-28 01:32:30,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162324825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:30,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:30,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:30,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223367293] [2024-06-28 01:32:30,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:30,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:30,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:30,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:30,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:30,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:30,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 390 transitions, 6143 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:30,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:30,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:30,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:33,040 INFO L124 PetriNetUnfolderBase]: 9051/14150 cut-off events. [2024-06-28 01:32:33,040 INFO L125 PetriNetUnfolderBase]: For 327553/327566 co-relation queries the response was YES. [2024-06-28 01:32:33,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90394 conditions, 14150 events. 9051/14150 cut-off events. For 327553/327566 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 93149 event pairs, 3048 based on Foata normal form. 36/13952 useless extension candidates. Maximal degree in co-relation 90304. Up to 11910 conditions per place. [2024-06-28 01:32:33,233 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 296 selfloop transitions, 151 changer transitions 0/455 dead transitions. [2024-06-28 01:32:33,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 455 transitions, 7486 flow [2024-06-28 01:32:33,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:32:33,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:32:33,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-28 01:32:33,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-28 01:32:33,235 INFO L175 Difference]: Start difference. First operand has 190 places, 390 transitions, 6143 flow. Second operand 9 states and 225 transitions. [2024-06-28 01:32:33,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 455 transitions, 7486 flow [2024-06-28 01:32:33,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 455 transitions, 7334 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-06-28 01:32:34,006 INFO L231 Difference]: Finished difference. Result has 197 places, 395 transitions, 6488 flow [2024-06-28 01:32:34,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5995, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6488, PETRI_PLACES=197, PETRI_TRANSITIONS=395} [2024-06-28 01:32:34,007 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 144 predicate places. [2024-06-28 01:32:34,007 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 395 transitions, 6488 flow [2024-06-28 01:32:34,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:34,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:34,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:34,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:32:34,008 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:34,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:34,008 INFO L85 PathProgramCache]: Analyzing trace with hash 884401355, now seen corresponding path program 6 times [2024-06-28 01:32:34,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:34,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441769156] [2024-06-28 01:32:34,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:34,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:34,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:34,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:34,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441769156] [2024-06-28 01:32:34,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441769156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:34,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:34,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:34,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602904418] [2024-06-28 01:32:34,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:34,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:34,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:34,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:34,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:34,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:34,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 395 transitions, 6488 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:34,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:34,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:34,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:37,115 INFO L124 PetriNetUnfolderBase]: 9382/14637 cut-off events. [2024-06-28 01:32:37,115 INFO L125 PetriNetUnfolderBase]: For 342816/342825 co-relation queries the response was YES. [2024-06-28 01:32:37,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95045 conditions, 14637 events. 9382/14637 cut-off events. For 342816/342825 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 96531 event pairs, 3060 based on Foata normal form. 32/14438 useless extension candidates. Maximal degree in co-relation 94952. Up to 12267 conditions per place. [2024-06-28 01:32:37,300 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 305 selfloop transitions, 162 changer transitions 0/475 dead transitions. [2024-06-28 01:32:37,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 475 transitions, 8211 flow [2024-06-28 01:32:37,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:32:37,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:32:37,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-28 01:32:37,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271867612293144 [2024-06-28 01:32:37,303 INFO L175 Difference]: Start difference. First operand has 197 places, 395 transitions, 6488 flow. Second operand 9 states and 223 transitions. [2024-06-28 01:32:37,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 475 transitions, 8211 flow [2024-06-28 01:32:38,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 475 transitions, 7823 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 01:32:38,228 INFO L231 Difference]: Finished difference. Result has 202 places, 419 transitions, 7099 flow [2024-06-28 01:32:38,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6134, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7099, PETRI_PLACES=202, PETRI_TRANSITIONS=419} [2024-06-28 01:32:38,229 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 149 predicate places. [2024-06-28 01:32:38,229 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 419 transitions, 7099 flow [2024-06-28 01:32:38,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:38,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:38,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:38,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:32:38,230 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:38,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:38,230 INFO L85 PathProgramCache]: Analyzing trace with hash 884616557, now seen corresponding path program 1 times [2024-06-28 01:32:38,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:38,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851367536] [2024-06-28 01:32:38,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:38,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:38,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:38,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:38,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851367536] [2024-06-28 01:32:38,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851367536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:38,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:38,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:38,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006083878] [2024-06-28 01:32:38,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:38,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:38,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:38,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:38,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:39,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:39,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 419 transitions, 7099 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:39,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:39,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:39,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:41,806 INFO L124 PetriNetUnfolderBase]: 9976/15541 cut-off events. [2024-06-28 01:32:41,806 INFO L125 PetriNetUnfolderBase]: For 358730/358739 co-relation queries the response was YES. [2024-06-28 01:32:41,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101447 conditions, 15541 events. 9976/15541 cut-off events. For 358730/358739 co-relation queries the response was YES. Maximal size of possible extension queue 693. Compared 103560 event pairs, 3053 based on Foata normal form. 20/15327 useless extension candidates. Maximal degree in co-relation 101351. Up to 11706 conditions per place. [2024-06-28 01:32:42,002 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 303 selfloop transitions, 186 changer transitions 0/497 dead transitions. [2024-06-28 01:32:42,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 497 transitions, 8779 flow [2024-06-28 01:32:42,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:32:42,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:32:42,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-28 01:32:42,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-28 01:32:42,009 INFO L175 Difference]: Start difference. First operand has 202 places, 419 transitions, 7099 flow. Second operand 9 states and 225 transitions. [2024-06-28 01:32:42,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 497 transitions, 8779 flow [2024-06-28 01:32:43,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 497 transitions, 8504 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-06-28 01:32:43,031 INFO L231 Difference]: Finished difference. Result has 208 places, 437 transitions, 7635 flow [2024-06-28 01:32:43,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6824, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7635, PETRI_PLACES=208, PETRI_TRANSITIONS=437} [2024-06-28 01:32:43,031 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 155 predicate places. [2024-06-28 01:32:43,031 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 437 transitions, 7635 flow [2024-06-28 01:32:43,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:43,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:43,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:43,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:32:43,032 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 01:32:43,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:43,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1962566839, now seen corresponding path program 1 times [2024-06-28 01:32:43,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:43,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336601861] [2024-06-28 01:32:43,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:43,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:43,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:43,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:43,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336601861] [2024-06-28 01:32:43,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336601861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:43,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:43,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:43,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204683130] [2024-06-28 01:32:43,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:43,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:43,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:43,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:43,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:43,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:43,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 437 transitions, 7635 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:43,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:43,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:43,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:46,694 INFO L124 PetriNetUnfolderBase]: 10016/15599 cut-off events. [2024-06-28 01:32:46,694 INFO L125 PetriNetUnfolderBase]: For 359135/359139 co-relation queries the response was YES. [2024-06-28 01:32:46,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102654 conditions, 15599 events. 10016/15599 cut-off events. For 359135/359139 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 104121 event pairs, 4179 based on Foata normal form. 5/15374 useless extension candidates. Maximal degree in co-relation 102556. Up to 14425 conditions per place. [2024-06-28 01:32:46,906 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 445 selfloop transitions, 25 changer transitions 0/478 dead transitions. [2024-06-28 01:32:46,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 478 transitions, 8835 flow [2024-06-28 01:32:46,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:46,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:46,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-28 01:32:46,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-06-28 01:32:46,908 INFO L175 Difference]: Start difference. First operand has 208 places, 437 transitions, 7635 flow. Second operand 8 states and 176 transitions. [2024-06-28 01:32:46,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 478 transitions, 8835 flow [2024-06-28 01:32:47,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 478 transitions, 8645 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-28 01:32:47,935 INFO L231 Difference]: Finished difference. Result has 214 places, 446 transitions, 7649 flow [2024-06-28 01:32:47,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7447, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7649, PETRI_PLACES=214, PETRI_TRANSITIONS=446} [2024-06-28 01:32:47,936 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 161 predicate places. [2024-06-28 01:32:47,936 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 446 transitions, 7649 flow [2024-06-28 01:32:47,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:47,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:47,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:47,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:32:47,936 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 01:32:47,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:47,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1962567242, now seen corresponding path program 3 times [2024-06-28 01:32:47,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:47,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56114713] [2024-06-28 01:32:47,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:47,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:48,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:48,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:48,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56114713] [2024-06-28 01:32:48,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56114713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:48,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:48,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:48,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048719801] [2024-06-28 01:32:48,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:48,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:48,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:48,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:48,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:48,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:48,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 446 transitions, 7649 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:48,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:48,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:48,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:52,203 INFO L124 PetriNetUnfolderBase]: 10104/15716 cut-off events. [2024-06-28 01:32:52,203 INFO L125 PetriNetUnfolderBase]: For 362897/362906 co-relation queries the response was YES. [2024-06-28 01:32:52,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104067 conditions, 15716 events. 10104/15716 cut-off events. For 362897/362906 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 104717 event pairs, 3754 based on Foata normal form. 8/15488 useless extension candidates. Maximal degree in co-relation 103965. Up to 14202 conditions per place. [2024-06-28 01:32:52,371 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 408 selfloop transitions, 72 changer transitions 0/488 dead transitions. [2024-06-28 01:32:52,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 488 transitions, 8983 flow [2024-06-28 01:32:52,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:52,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:52,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 01:32:52,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4920212765957447 [2024-06-28 01:32:52,372 INFO L175 Difference]: Start difference. First operand has 214 places, 446 transitions, 7649 flow. Second operand 8 states and 185 transitions. [2024-06-28 01:32:52,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 488 transitions, 8983 flow [2024-06-28 01:32:53,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 488 transitions, 8882 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-28 01:32:53,306 INFO L231 Difference]: Finished difference. Result has 219 places, 454 transitions, 7865 flow [2024-06-28 01:32:53,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7548, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7865, PETRI_PLACES=219, PETRI_TRANSITIONS=454} [2024-06-28 01:32:53,307 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 166 predicate places. [2024-06-28 01:32:53,307 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 454 transitions, 7865 flow [2024-06-28 01:32:53,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:53,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:53,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:53,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:32:53,308 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:53,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:53,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1876018521, now seen corresponding path program 7 times [2024-06-28 01:32:53,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:53,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516213885] [2024-06-28 01:32:53,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:53,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:53,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:53,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:53,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:53,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516213885] [2024-06-28 01:32:53,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516213885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:53,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:53,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:53,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033183798] [2024-06-28 01:32:53,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:53,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:53,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:53,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:53,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:54,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:54,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 454 transitions, 7865 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:54,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:54,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:54,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:57,511 INFO L124 PetriNetUnfolderBase]: 10324/16035 cut-off events. [2024-06-28 01:32:57,511 INFO L125 PetriNetUnfolderBase]: For 407352/407361 co-relation queries the response was YES. [2024-06-28 01:32:57,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108524 conditions, 16035 events. 10324/16035 cut-off events. For 407352/407361 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 107041 event pairs, 2241 based on Foata normal form. 26/15823 useless extension candidates. Maximal degree in co-relation 108420. Up to 8331 conditions per place. [2024-06-28 01:32:57,728 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 257 selfloop transitions, 256 changer transitions 0/521 dead transitions. [2024-06-28 01:32:57,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 521 transitions, 9464 flow [2024-06-28 01:32:57,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:57,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:57,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 01:32:57,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-28 01:32:57,730 INFO L175 Difference]: Start difference. First operand has 219 places, 454 transitions, 7865 flow. Second operand 8 states and 200 transitions. [2024-06-28 01:32:57,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 521 transitions, 9464 flow [2024-06-28 01:32:58,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 521 transitions, 9337 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-28 01:32:58,945 INFO L231 Difference]: Finished difference. Result has 225 places, 462 transitions, 8601 flow [2024-06-28 01:32:58,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7738, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=248, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8601, PETRI_PLACES=225, PETRI_TRANSITIONS=462} [2024-06-28 01:32:58,946 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 172 predicate places. [2024-06-28 01:32:58,946 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 462 transitions, 8601 flow [2024-06-28 01:32:58,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:58,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:58,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:58,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:32:58,947 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:58,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:58,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1964584281, now seen corresponding path program 8 times [2024-06-28 01:32:58,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:58,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077144384] [2024-06-28 01:32:58,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:58,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:59,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:59,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:59,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077144384] [2024-06-28 01:32:59,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077144384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:59,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:59,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:59,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463374302] [2024-06-28 01:32:59,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:59,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:59,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:59,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:59,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:59,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:59,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 462 transitions, 8601 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:59,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:59,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:59,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:03,411 INFO L124 PetriNetUnfolderBase]: 10698/16603 cut-off events. [2024-06-28 01:33:03,411 INFO L125 PetriNetUnfolderBase]: For 467923/467932 co-relation queries the response was YES. [2024-06-28 01:33:03,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118663 conditions, 16603 events. 10698/16603 cut-off events. For 467923/467932 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 111582 event pairs, 2962 based on Foata normal form. 34/16400 useless extension candidates. Maximal degree in co-relation 118555. Up to 12493 conditions per place. [2024-06-28 01:33:03,628 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 324 selfloop transitions, 202 changer transitions 0/534 dead transitions. [2024-06-28 01:33:03,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 534 transitions, 10360 flow [2024-06-28 01:33:03,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:03,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:03,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 01:33:03,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-28 01:33:03,634 INFO L175 Difference]: Start difference. First operand has 225 places, 462 transitions, 8601 flow. Second operand 8 states and 200 transitions. [2024-06-28 01:33:03,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 534 transitions, 10360 flow [2024-06-28 01:33:05,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 534 transitions, 9890 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:05,172 INFO L231 Difference]: Finished difference. Result has 228 places, 475 transitions, 8995 flow [2024-06-28 01:33:05,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8143, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8995, PETRI_PLACES=228, PETRI_TRANSITIONS=475} [2024-06-28 01:33:05,173 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 175 predicate places. [2024-06-28 01:33:05,173 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 475 transitions, 8995 flow [2024-06-28 01:33:05,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:05,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:05,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:05,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:33:05,174 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 01:33:05,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:05,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1048545612, now seen corresponding path program 4 times [2024-06-28 01:33:05,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:05,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390129416] [2024-06-28 01:33:05,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:05,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:05,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:05,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:05,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390129416] [2024-06-28 01:33:05,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390129416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:05,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:05,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:05,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679363249] [2024-06-28 01:33:05,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:05,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:05,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:05,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:05,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:05,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:33:05,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 475 transitions, 8995 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:05,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:05,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:33:05,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:09,268 INFO L124 PetriNetUnfolderBase]: 10738/16714 cut-off events. [2024-06-28 01:33:09,269 INFO L125 PetriNetUnfolderBase]: For 447021/447034 co-relation queries the response was YES. [2024-06-28 01:33:09,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118289 conditions, 16714 events. 10738/16714 cut-off events. For 447021/447034 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 112902 event pairs, 4055 based on Foata normal form. 12/16488 useless extension candidates. Maximal degree in co-relation 118181. Up to 15232 conditions per place. [2024-06-28 01:33:09,501 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 429 selfloop transitions, 72 changer transitions 0/509 dead transitions. [2024-06-28 01:33:09,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 509 transitions, 10211 flow [2024-06-28 01:33:09,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:09,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:09,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 01:33:09,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49544072948328266 [2024-06-28 01:33:09,503 INFO L175 Difference]: Start difference. First operand has 228 places, 475 transitions, 8995 flow. Second operand 7 states and 163 transitions. [2024-06-28 01:33:09,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 509 transitions, 10211 flow [2024-06-28 01:33:11,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 509 transitions, 9939 flow, removed 101 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:11,045 INFO L231 Difference]: Finished difference. Result has 232 places, 479 transitions, 8971 flow [2024-06-28 01:33:11,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8723, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8971, PETRI_PLACES=232, PETRI_TRANSITIONS=479} [2024-06-28 01:33:11,046 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 179 predicate places. [2024-06-28 01:33:11,046 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 479 transitions, 8971 flow [2024-06-28 01:33:11,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:11,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:11,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:11,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:33:11,047 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:11,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:11,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1243643255, now seen corresponding path program 9 times [2024-06-28 01:33:11,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:11,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738341292] [2024-06-28 01:33:11,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:11,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:11,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:11,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:11,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:11,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738341292] [2024-06-28 01:33:11,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738341292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:11,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:11,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:11,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343078455] [2024-06-28 01:33:11,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:11,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:11,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:11,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:11,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:11,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:33:11,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 479 transitions, 8971 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:11,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:11,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:33:11,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:15,814 INFO L124 PetriNetUnfolderBase]: 11427/17796 cut-off events. [2024-06-28 01:33:15,815 INFO L125 PetriNetUnfolderBase]: For 521112/521125 co-relation queries the response was YES. [2024-06-28 01:33:15,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128227 conditions, 17796 events. 11427/17796 cut-off events. For 521112/521125 co-relation queries the response was YES. Maximal size of possible extension queue 809. Compared 121577 event pairs, 2925 based on Foata normal form. 38/17596 useless extension candidates. Maximal degree in co-relation 128117. Up to 12784 conditions per place. [2024-06-28 01:33:16,020 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 332 selfloop transitions, 216 changer transitions 0/556 dead transitions. [2024-06-28 01:33:16,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 556 transitions, 11036 flow [2024-06-28 01:33:16,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:16,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:16,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 01:33:16,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5452127659574468 [2024-06-28 01:33:16,030 INFO L175 Difference]: Start difference. First operand has 232 places, 479 transitions, 8971 flow. Second operand 8 states and 205 transitions. [2024-06-28 01:33:16,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 556 transitions, 11036 flow [2024-06-28 01:33:17,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 556 transitions, 10872 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:17,075 INFO L231 Difference]: Finished difference. Result has 236 places, 496 transitions, 9885 flow [2024-06-28 01:33:17,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8807, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9885, PETRI_PLACES=236, PETRI_TRANSITIONS=496} [2024-06-28 01:33:17,076 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 183 predicate places. [2024-06-28 01:33:17,076 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 496 transitions, 9885 flow [2024-06-28 01:33:17,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:17,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:17,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:17,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:33:17,080 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:17,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:17,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1243646975, now seen corresponding path program 10 times [2024-06-28 01:33:17,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:17,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713680471] [2024-06-28 01:33:17,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:17,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:17,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:17,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:17,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713680471] [2024-06-28 01:33:17,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713680471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:17,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:17,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:17,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932518311] [2024-06-28 01:33:17,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:17,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:17,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:17,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:17,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:17,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:33:17,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 496 transitions, 9885 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:17,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:17,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:33:17,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:22,082 INFO L124 PetriNetUnfolderBase]: 11883/18544 cut-off events. [2024-06-28 01:33:22,082 INFO L125 PetriNetUnfolderBase]: For 595261/595274 co-relation queries the response was YES. [2024-06-28 01:33:22,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137533 conditions, 18544 events. 11883/18544 cut-off events. For 595261/595274 co-relation queries the response was YES. Maximal size of possible extension queue 847. Compared 127967 event pairs, 3908 based on Foata normal form. 56/18363 useless extension candidates. Maximal degree in co-relation 137421. Up to 15221 conditions per place. [2024-06-28 01:33:22,307 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 362 selfloop transitions, 189 changer transitions 0/559 dead transitions. [2024-06-28 01:33:22,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 559 transitions, 11575 flow [2024-06-28 01:33:22,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:22,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:22,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 01:33:22,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-28 01:33:22,309 INFO L175 Difference]: Start difference. First operand has 236 places, 496 transitions, 9885 flow. Second operand 8 states and 200 transitions. [2024-06-28 01:33:22,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 559 transitions, 11575 flow [2024-06-28 01:33:24,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 559 transitions, 11121 flow, removed 123 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:24,195 INFO L231 Difference]: Finished difference. Result has 239 places, 504 transitions, 10145 flow [2024-06-28 01:33:24,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9443, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10145, PETRI_PLACES=239, PETRI_TRANSITIONS=504} [2024-06-28 01:33:24,196 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 186 predicate places. [2024-06-28 01:33:24,196 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 504 transitions, 10145 flow [2024-06-28 01:33:24,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:24,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:24,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:24,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:33:24,197 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:24,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:24,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1246847867, now seen corresponding path program 11 times [2024-06-28 01:33:24,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:24,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803179145] [2024-06-28 01:33:24,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:24,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:24,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:24,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:24,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803179145] [2024-06-28 01:33:24,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803179145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:24,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:24,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:24,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755388385] [2024-06-28 01:33:24,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:24,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:24,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:24,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:24,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:25,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:33:25,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 504 transitions, 10145 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:25,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:25,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:33:25,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand