./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:42:11,421 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:42:11,507 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:42:11,513 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:42:11,514 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:42:11,542 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:42:11,543 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:42:11,544 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:42:11,544 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:42:11,548 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:42:11,548 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:42:11,549 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:42:11,550 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:42:11,551 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:42:11,551 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:42:11,552 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:42:11,552 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:42:11,552 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:42:11,553 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:42:11,553 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:42:11,553 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:42:11,554 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:42:11,554 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:42:11,554 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:42:11,555 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:42:11,555 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:42:11,555 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:42:11,555 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:42:11,556 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:42:11,556 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:42:11,557 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:42:11,558 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:42:11,558 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:42:11,558 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:42:11,558 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:42:11,559 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:42:11,559 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:42:11,559 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:42:11,559 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:42:11,560 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:42:11,560 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:42:11,560 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:42:11,560 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:42:11,561 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:42:11,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:42:11,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:42:11,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:42:11,859 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:42:11,860 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:42:11,861 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 01:42:13,135 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:42:13,425 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:42:13,426 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 01:42:13,441 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/984fe4af9/ec5b62af0c0244d3b9b0f2a0463b6d6b/FLAGd2be2a246 [2024-06-28 01:42:13,453 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/984fe4af9/ec5b62af0c0244d3b9b0f2a0463b6d6b [2024-06-28 01:42:13,455 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:42:13,456 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:42:13,456 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-28 01:42:13,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:42:13,615 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:42:13,616 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:42:13,616 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:42:13,621 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:42:13,622 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:42:13" (1/2) ... [2024-06-28 01:42:13,623 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a813bd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:42:13, skipping insertion in model container [2024-06-28 01:42:13,623 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:42:13" (1/2) ... [2024-06-28 01:42:13,625 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1e29ca94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:42:13, skipping insertion in model container [2024-06-28 01:42:13,625 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:42:13" (2/2) ... [2024-06-28 01:42:13,625 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a813bd6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:42:13, skipping insertion in model container [2024-06-28 01:42:13,625 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:42:13" (2/2) ... [2024-06-28 01:42:13,625 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:42:13,739 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:42:13,740 INFO L97 edCorrectnessWitness]: Location invariant before [L816-L816] ((((((((((((((((! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! 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$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2)) [2024-06-28 01:42:13,741 INFO L97 edCorrectnessWitness]: Location invariant before [L818-L818] ((((((((((((((((! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && y$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_EAX == 0 || __unbuffered_p2_EAX == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2)) [2024-06-28 01:42:13,741 INFO L97 edCorrectnessWitness]: Location invariant before [L819-L819] ((((((((((((((((! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! 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$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2)) [2024-06-28 01:42:13,741 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:42:13,741 INFO L106 edCorrectnessWitness]: ghost_update [L814-L814] multithreaded = 1; [2024-06-28 01:42:13,796 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:42:13,956 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/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2024-06-28 01:42:14,169 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:42:14,185 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:42:14,220 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/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:42:14,316 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:42:14,357 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:42:14,358 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:42:14 WrapperNode [2024-06-28 01:42:14,358 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:42:14,359 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:42:14,359 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:42:14,359 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:42:14,366 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 01:42:14" (1/1) ... [2024-06-28 01:42:14,387 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 01:42:14" (1/1) ... [2024-06-28 01:42:14,427 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 139 [2024-06-28 01:42:14,428 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:42:14,429 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:42:14,429 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:42:14,429 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:42:14,439 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 01:42:14" (1/1) ... [2024-06-28 01:42:14,439 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 01:42:14" (1/1) ... [2024-06-28 01:42:14,442 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 01:42:14" (1/1) ... [2024-06-28 01:42:14,459 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 01:42:14,460 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 01:42:14" (1/1) ... [2024-06-28 01:42:14,473 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 01:42:14" (1/1) ... [2024-06-28 01:42:14,482 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 01:42:14" (1/1) ... [2024-06-28 01:42:14,495 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 01:42:14" (1/1) ... [2024-06-28 01:42:14,497 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 01:42:14" (1/1) ... [2024-06-28 01:42:14,499 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 01:42:14" (1/1) ... [2024-06-28 01:42:14,502 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:42:14,503 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:42:14,503 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:42:14,503 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:42:14,504 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 01:42:14" (1/1) ... [2024-06-28 01:42:14,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:42:14,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:42:14,541 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 01:42:14,553 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 01:42:14,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:42:14,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:42:14,587 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:42:14,587 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:42:14,587 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:42:14,587 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:42:14,587 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:42:14,588 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:42:14,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:42:14,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:42:14,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:42:14,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:42:14,590 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 01:42:14,754 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:42:14,758 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:42:15,134 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:42:15,134 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:42:15,305 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:42:15,305 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:42:15,306 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:42:15 BoogieIcfgContainer [2024-06-28 01:42:15,306 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:42:15,308 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:42:15,308 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:42:15,311 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:42:15,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:42:13" (1/4) ... [2024-06-28 01:42:15,312 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f566f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:42:15, skipping insertion in model container [2024-06-28 01:42:15,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:42:13" (2/4) ... [2024-06-28 01:42:15,313 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f566f0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:42:15, skipping insertion in model container [2024-06-28 01:42:15,313 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 01:42:14" (3/4) ... [2024-06-28 01:42:15,314 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f566f0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:42:15, skipping insertion in model container [2024-06-28 01:42:15,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:42:15" (4/4) ... [2024-06-28 01:42:15,315 INFO L112 eAbstractionObserver]: Analyzing ICFG mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 01:42:15,330 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:42:15,330 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:42:15,331 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:42:15,372 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:42:15,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-28 01:42:15,444 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-28 01:42:15,444 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:42:15,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-06-28 01:42:15,448 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-28 01:42:15,452 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 43 transitions, 95 flow [2024-06-28 01:42:15,467 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:42:15,475 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;@5ced8812, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:42:15,475 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:42:15,481 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:42:15,481 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:42:15,481 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:42:15,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:15,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:42:15,482 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 01:42:15,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:15,490 INFO L85 PathProgramCache]: Analyzing trace with hash 346047312, now seen corresponding path program 1 times [2024-06-28 01:42:15,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:15,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435522688] [2024-06-28 01:42:15,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:15,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:16,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:16,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:16,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435522688] [2024-06-28 01:42:16,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435522688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:16,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:16,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:42:16,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525283982] [2024-06-28 01:42:16,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:16,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:42:16,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:16,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:42:16,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:42:16,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-28 01:42:16,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 95 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 01:42:16,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:16,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-28 01:42:16,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:17,366 INFO L124 PetriNetUnfolderBase]: 3578/5353 cut-off events. [2024-06-28 01:42:17,366 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-28 01:42:17,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10586 conditions, 5353 events. 3578/5353 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 30307 event pairs, 2065 based on Foata normal form. 181/5254 useless extension candidates. Maximal degree in co-relation 10574. Up to 5143 conditions per place. [2024-06-28 01:42:17,406 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 42 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-28 01:42:17,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 225 flow [2024-06-28 01:42:17,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:42:17,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:42:17,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-06-28 01:42:17,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6811594202898551 [2024-06-28 01:42:17,419 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 95 flow. Second operand 3 states and 94 transitions. [2024-06-28 01:42:17,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 225 flow [2024-06-28 01:42:17,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 220 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:42:17,429 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 127 flow [2024-06-28 01:42:17,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-06-28 01:42:17,434 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-06-28 01:42:17,434 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 127 flow [2024-06-28 01:42:17,434 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 01:42:17,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:17,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:17,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:42:17,435 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 01:42:17,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:17,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1839033199, now seen corresponding path program 1 times [2024-06-28 01:42:17,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:17,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454418392] [2024-06-28 01:42:17,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:17,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:18,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:18,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:18,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454418392] [2024-06-28 01:42:18,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454418392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:18,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:18,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:42:18,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062005020] [2024-06-28 01:42:18,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:18,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:42:18,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:18,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:42:18,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:42:18,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:42:18,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 127 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 01:42:18,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:18,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:42:18,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:18,809 INFO L124 PetriNetUnfolderBase]: 4173/6136 cut-off events. [2024-06-28 01:42:18,809 INFO L125 PetriNetUnfolderBase]: For 870/870 co-relation queries the response was YES. [2024-06-28 01:42:18,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13610 conditions, 6136 events. 4173/6136 cut-off events. For 870/870 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 34610 event pairs, 2218 based on Foata normal form. 3/5853 useless extension candidates. Maximal degree in co-relation 13598. Up to 5950 conditions per place. [2024-06-28 01:42:18,893 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 55 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2024-06-28 01:42:18,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 74 transitions, 325 flow [2024-06-28 01:42:18,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:42:18,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:42:18,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-06-28 01:42:18,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6467391304347826 [2024-06-28 01:42:18,899 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 127 flow. Second operand 4 states and 119 transitions. [2024-06-28 01:42:18,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 74 transitions, 325 flow [2024-06-28 01:42:18,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 74 transitions, 320 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:42:18,903 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 173 flow [2024-06-28 01:42:18,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-06-28 01:42:18,904 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-06-28 01:42:18,904 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 173 flow [2024-06-28 01:42:18,904 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 01:42:18,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:18,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:18,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:42:18,905 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 01:42:18,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:18,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1175455887, now seen corresponding path program 1 times [2024-06-28 01:42:18,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:18,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952323592] [2024-06-28 01:42:18,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:18,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:19,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:19,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:19,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952323592] [2024-06-28 01:42:19,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952323592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:19,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:19,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:42:19,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213692155] [2024-06-28 01:42:19,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:19,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:42:19,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:19,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:42:19,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:42:19,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:42:19,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 173 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 01:42:19,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:19,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:42:19,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:20,216 INFO L124 PetriNetUnfolderBase]: 4203/6067 cut-off events. [2024-06-28 01:42:20,217 INFO L125 PetriNetUnfolderBase]: For 2243/2243 co-relation queries the response was YES. [2024-06-28 01:42:20,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14987 conditions, 6067 events. 4203/6067 cut-off events. For 2243/2243 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 33549 event pairs, 1444 based on Foata normal form. 5/5817 useless extension candidates. Maximal degree in co-relation 14973. Up to 5868 conditions per place. [2024-06-28 01:42:20,263 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 73 selfloop transitions, 21 changer transitions 0/104 dead transitions. [2024-06-28 01:42:20,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 104 transitions, 529 flow [2024-06-28 01:42:20,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:42:20,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:42:20,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-06-28 01:42:20,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6782608695652174 [2024-06-28 01:42:20,268 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 173 flow. Second operand 5 states and 156 transitions. [2024-06-28 01:42:20,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 104 transitions, 529 flow [2024-06-28 01:42:20,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 104 transitions, 510 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 01:42:20,275 INFO L231 Difference]: Finished difference. Result has 60 places, 64 transitions, 302 flow [2024-06-28 01:42:20,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=302, PETRI_PLACES=60, PETRI_TRANSITIONS=64} [2024-06-28 01:42:20,276 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2024-06-28 01:42:20,277 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 64 transitions, 302 flow [2024-06-28 01:42:20,277 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 01:42:20,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:20,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:20,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:42:20,278 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 01:42:20,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:20,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1753914108, now seen corresponding path program 1 times [2024-06-28 01:42:20,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:20,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193932144] [2024-06-28 01:42:20,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:20,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:20,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:20,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:20,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193932144] [2024-06-28 01:42:20,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193932144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:20,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:20,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:42:20,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138436925] [2024-06-28 01:42:20,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:20,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:42:20,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:20,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:42:20,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:42:21,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:42:21,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 64 transitions, 302 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 01:42:21,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:21,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:42:21,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:21,859 INFO L124 PetriNetUnfolderBase]: 4254/6742 cut-off events. [2024-06-28 01:42:21,860 INFO L125 PetriNetUnfolderBase]: For 6327/6330 co-relation queries the response was YES. [2024-06-28 01:42:21,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18389 conditions, 6742 events. 4254/6742 cut-off events. For 6327/6330 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 41977 event pairs, 1894 based on Foata normal form. 12/6283 useless extension candidates. Maximal degree in co-relation 18372. Up to 5845 conditions per place. [2024-06-28 01:42:21,983 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 82 selfloop transitions, 25 changer transitions 0/117 dead transitions. [2024-06-28 01:42:21,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 117 transitions, 674 flow [2024-06-28 01:42:21,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:42:21,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:42:21,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-06-28 01:42:21,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6594202898550725 [2024-06-28 01:42:21,986 INFO L175 Difference]: Start difference. First operand has 60 places, 64 transitions, 302 flow. Second operand 6 states and 182 transitions. [2024-06-28 01:42:21,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 117 transitions, 674 flow [2024-06-28 01:42:21,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 117 transitions, 662 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-28 01:42:21,997 INFO L231 Difference]: Finished difference. Result has 65 places, 67 transitions, 377 flow [2024-06-28 01:42:21,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=377, PETRI_PLACES=65, PETRI_TRANSITIONS=67} [2024-06-28 01:42:21,999 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 13 predicate places. [2024-06-28 01:42:21,999 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 67 transitions, 377 flow [2024-06-28 01:42:21,999 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 01:42:22,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:22,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:22,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:42:22,000 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 01:42:22,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:22,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1033479327, now seen corresponding path program 1 times [2024-06-28 01:42:22,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:22,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694473538] [2024-06-28 01:42:22,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:22,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:22,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:22,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:22,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694473538] [2024-06-28 01:42:22,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694473538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:22,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:22,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:42:22,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755022795] [2024-06-28 01:42:22,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:22,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:42:22,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:22,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:42:22,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:42:22,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:42:22,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 67 transitions, 377 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 01:42:22,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:22,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:42:22,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:23,646 INFO L124 PetriNetUnfolderBase]: 4101/6097 cut-off events. [2024-06-28 01:42:23,647 INFO L125 PetriNetUnfolderBase]: For 7806/7806 co-relation queries the response was YES. [2024-06-28 01:42:23,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19026 conditions, 6097 events. 4101/6097 cut-off events. For 7806/7806 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 34512 event pairs, 1276 based on Foata normal form. 2/5804 useless extension candidates. Maximal degree in co-relation 19005. Up to 5849 conditions per place. [2024-06-28 01:42:23,682 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 71 selfloop transitions, 10 changer transitions 0/90 dead transitions. [2024-06-28 01:42:23,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 90 transitions, 591 flow [2024-06-28 01:42:23,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:42:23,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:42:23,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-28 01:42:23,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-06-28 01:42:23,684 INFO L175 Difference]: Start difference. First operand has 65 places, 67 transitions, 377 flow. Second operand 5 states and 125 transitions. [2024-06-28 01:42:23,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 90 transitions, 591 flow [2024-06-28 01:42:23,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 90 transitions, 522 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 01:42:23,700 INFO L231 Difference]: Finished difference. Result has 66 places, 67 transitions, 337 flow [2024-06-28 01:42:23,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=337, PETRI_PLACES=66, PETRI_TRANSITIONS=67} [2024-06-28 01:42:23,703 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 14 predicate places. [2024-06-28 01:42:23,708 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 67 transitions, 337 flow [2024-06-28 01:42:23,709 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 01:42:23,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:23,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:23,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:42:23,709 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 01:42:23,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:23,710 INFO L85 PathProgramCache]: Analyzing trace with hash -2010940673, now seen corresponding path program 1 times [2024-06-28 01:42:23,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:23,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048612678] [2024-06-28 01:42:23,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:23,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:24,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:24,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:24,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048612678] [2024-06-28 01:42:24,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048612678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:24,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:24,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:42:24,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8046857] [2024-06-28 01:42:24,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:24,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:42:24,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:24,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:42:24,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:42:24,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:42:24,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 67 transitions, 337 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 01:42:24,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:24,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:42:24,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:25,436 INFO L124 PetriNetUnfolderBase]: 4089/6615 cut-off events. [2024-06-28 01:42:25,440 INFO L125 PetriNetUnfolderBase]: For 8882/8882 co-relation queries the response was YES. [2024-06-28 01:42:25,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19129 conditions, 6615 events. 4089/6615 cut-off events. For 8882/8882 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 41670 event pairs, 1685 based on Foata normal form. 4/6144 useless extension candidates. Maximal degree in co-relation 19106. Up to 5812 conditions per place. [2024-06-28 01:42:25,481 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 81 selfloop transitions, 17 changer transitions 0/107 dead transitions. [2024-06-28 01:42:25,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 107 transitions, 701 flow [2024-06-28 01:42:25,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:42:25,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:42:25,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-28 01:42:25,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289855072463768 [2024-06-28 01:42:25,483 INFO L175 Difference]: Start difference. First operand has 66 places, 67 transitions, 337 flow. Second operand 6 states and 146 transitions. [2024-06-28 01:42:25,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 107 transitions, 701 flow [2024-06-28 01:42:25,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 107 transitions, 648 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:42:25,493 INFO L231 Difference]: Finished difference. Result has 70 places, 82 transitions, 476 flow [2024-06-28 01:42:25,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=476, PETRI_PLACES=70, PETRI_TRANSITIONS=82} [2024-06-28 01:42:25,497 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 18 predicate places. [2024-06-28 01:42:25,497 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 82 transitions, 476 flow [2024-06-28 01:42:25,497 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 01:42:25,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:25,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:25,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:42:25,498 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 01:42:25,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:25,498 INFO L85 PathProgramCache]: Analyzing trace with hash -2011668954, now seen corresponding path program 1 times [2024-06-28 01:42:25,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:25,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909887840] [2024-06-28 01:42:25,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:25,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:25,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:25,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:25,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909887840] [2024-06-28 01:42:25,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909887840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:25,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:25,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:42:25,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035232321] [2024-06-28 01:42:25,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:25,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:42:25,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:25,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:42:25,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:42:25,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 46 [2024-06-28 01:42:25,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 82 transitions, 476 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 01:42:25,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:25,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 46 [2024-06-28 01:42:25,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:25,913 INFO L124 PetriNetUnfolderBase]: 1281/2565 cut-off events. [2024-06-28 01:42:25,913 INFO L125 PetriNetUnfolderBase]: For 4467/4756 co-relation queries the response was YES. [2024-06-28 01:42:25,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6652 conditions, 2565 events. 1281/2565 cut-off events. For 4467/4756 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 19233 event pairs, 277 based on Foata normal form. 16/2381 useless extension candidates. Maximal degree in co-relation 6628. Up to 1466 conditions per place. [2024-06-28 01:42:25,936 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 30 selfloop transitions, 11 changer transitions 0/81 dead transitions. [2024-06-28 01:42:25,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 81 transitions, 494 flow [2024-06-28 01:42:25,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:42:25,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:42:25,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-06-28 01:42:25,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7391304347826086 [2024-06-28 01:42:25,938 INFO L175 Difference]: Start difference. First operand has 70 places, 82 transitions, 476 flow. Second operand 3 states and 102 transitions. [2024-06-28 01:42:25,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 81 transitions, 494 flow [2024-06-28 01:42:25,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 81 transitions, 480 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-28 01:42:25,944 INFO L231 Difference]: Finished difference. Result has 70 places, 72 transitions, 400 flow [2024-06-28 01:42:25,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=400, PETRI_PLACES=70, PETRI_TRANSITIONS=72} [2024-06-28 01:42:25,945 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 18 predicate places. [2024-06-28 01:42:25,945 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 72 transitions, 400 flow [2024-06-28 01:42:25,945 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 01:42:25,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:25,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:25,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:42:25,946 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 01:42:25,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:25,946 INFO L85 PathProgramCache]: Analyzing trace with hash -992556416, now seen corresponding path program 1 times [2024-06-28 01:42:25,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:25,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422930496] [2024-06-28 01:42:25,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:25,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:26,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:26,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:26,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422930496] [2024-06-28 01:42:26,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422930496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:26,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:26,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:42:26,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067890461] [2024-06-28 01:42:26,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:26,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:42:26,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:26,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:42:26,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:42:26,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:26,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 400 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 01:42:26,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:26,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:26,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:27,654 INFO L124 PetriNetUnfolderBase]: 4275/6312 cut-off events. [2024-06-28 01:42:27,655 INFO L125 PetriNetUnfolderBase]: For 13826/13832 co-relation queries the response was YES. [2024-06-28 01:42:27,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20188 conditions, 6312 events. 4275/6312 cut-off events. For 13826/13832 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 35161 event pairs, 1323 based on Foata normal form. 10/6274 useless extension candidates. Maximal degree in co-relation 20162. Up to 5838 conditions per place. [2024-06-28 01:42:27,771 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 88 selfloop transitions, 35 changer transitions 5/136 dead transitions. [2024-06-28 01:42:27,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 136 transitions, 914 flow [2024-06-28 01:42:27,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:42:27,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:42:27,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-28 01:42:27,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5559006211180124 [2024-06-28 01:42:27,774 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 400 flow. Second operand 7 states and 179 transitions. [2024-06-28 01:42:27,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 136 transitions, 914 flow [2024-06-28 01:42:27,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 136 transitions, 884 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:42:27,786 INFO L231 Difference]: Finished difference. Result has 77 places, 87 transitions, 581 flow [2024-06-28 01:42:27,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=581, PETRI_PLACES=77, PETRI_TRANSITIONS=87} [2024-06-28 01:42:27,787 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 25 predicate places. [2024-06-28 01:42:27,787 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 87 transitions, 581 flow [2024-06-28 01:42:27,787 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 01:42:27,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:27,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:27,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:42:27,788 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 01:42:27,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:27,788 INFO L85 PathProgramCache]: Analyzing trace with hash 2079627934, now seen corresponding path program 2 times [2024-06-28 01:42:27,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:27,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10759967] [2024-06-28 01:42:27,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:27,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:27,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:28,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:28,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:28,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10759967] [2024-06-28 01:42:28,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10759967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:28,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:28,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:42:28,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351383984] [2024-06-28 01:42:28,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:28,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:42:28,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:28,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:42:28,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:42:28,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:28,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 87 transitions, 581 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 01:42:28,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:28,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:28,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:29,327 INFO L124 PetriNetUnfolderBase]: 3842/5706 cut-off events. [2024-06-28 01:42:29,327 INFO L125 PetriNetUnfolderBase]: For 13995/14003 co-relation queries the response was YES. [2024-06-28 01:42:29,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19284 conditions, 5706 events. 3842/5706 cut-off events. For 13995/14003 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 31562 event pairs, 1189 based on Foata normal form. 12/5670 useless extension candidates. Maximal degree in co-relation 19254. Up to 5225 conditions per place. [2024-06-28 01:42:29,366 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 80 selfloop transitions, 39 changer transitions 0/127 dead transitions. [2024-06-28 01:42:29,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 127 transitions, 1003 flow [2024-06-28 01:42:29,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:42:29,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:42:29,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-28 01:42:29,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-06-28 01:42:29,369 INFO L175 Difference]: Start difference. First operand has 77 places, 87 transitions, 581 flow. Second operand 6 states and 147 transitions. [2024-06-28 01:42:29,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 127 transitions, 1003 flow [2024-06-28 01:42:29,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 127 transitions, 956 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 01:42:29,392 INFO L231 Difference]: Finished difference. Result has 79 places, 92 transitions, 683 flow [2024-06-28 01:42:29,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=683, PETRI_PLACES=79, PETRI_TRANSITIONS=92} [2024-06-28 01:42:29,393 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 27 predicate places. [2024-06-28 01:42:29,393 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 92 transitions, 683 flow [2024-06-28 01:42:29,394 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 01:42:29,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:29,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:29,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:42:29,394 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 01:42:29,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:29,395 INFO L85 PathProgramCache]: Analyzing trace with hash -2145395534, now seen corresponding path program 3 times [2024-06-28 01:42:29,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:29,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614509827] [2024-06-28 01:42:29,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:29,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:30,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:30,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:30,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614509827] [2024-06-28 01:42:30,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614509827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:30,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:30,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:42:30,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615675327] [2024-06-28 01:42:30,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:30,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:42:30,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:30,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:42:30,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:42:30,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:30,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 92 transitions, 683 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 01:42:30,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:30,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:30,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:30,876 INFO L124 PetriNetUnfolderBase]: 3825/5670 cut-off events. [2024-06-28 01:42:30,876 INFO L125 PetriNetUnfolderBase]: For 16114/16122 co-relation queries the response was YES. [2024-06-28 01:42:30,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19539 conditions, 5670 events. 3825/5670 cut-off events. For 16114/16122 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 31285 event pairs, 1201 based on Foata normal form. 4/5620 useless extension candidates. Maximal degree in co-relation 19508. Up to 5204 conditions per place. [2024-06-28 01:42:30,912 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 77 selfloop transitions, 40 changer transitions 0/125 dead transitions. [2024-06-28 01:42:30,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 125 transitions, 1025 flow [2024-06-28 01:42:30,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:42:30,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:42:30,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-28 01:42:30,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5181159420289855 [2024-06-28 01:42:30,914 INFO L175 Difference]: Start difference. First operand has 79 places, 92 transitions, 683 flow. Second operand 6 states and 143 transitions. [2024-06-28 01:42:30,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 125 transitions, 1025 flow [2024-06-28 01:42:30,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 125 transitions, 964 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 01:42:30,940 INFO L231 Difference]: Finished difference. Result has 82 places, 92 transitions, 713 flow [2024-06-28 01:42:30,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=713, PETRI_PLACES=82, PETRI_TRANSITIONS=92} [2024-06-28 01:42:30,941 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 30 predicate places. [2024-06-28 01:42:30,941 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 92 transitions, 713 flow [2024-06-28 01:42:30,941 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 01:42:30,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:30,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:30,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:42:30,942 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 01:42:30,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:30,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1402204258, now seen corresponding path program 1 times [2024-06-28 01:42:30,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:30,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776100087] [2024-06-28 01:42:30,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:30,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:30,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:31,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:31,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:31,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776100087] [2024-06-28 01:42:31,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776100087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:31,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:31,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:42:31,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684363045] [2024-06-28 01:42:31,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:31,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:42:31,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:31,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:42:31,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:42:31,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:31,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 92 transitions, 713 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 01:42:31,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:31,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:31,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:32,542 INFO L124 PetriNetUnfolderBase]: 3909/6232 cut-off events. [2024-06-28 01:42:32,543 INFO L125 PetriNetUnfolderBase]: For 17688/17696 co-relation queries the response was YES. [2024-06-28 01:42:32,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20452 conditions, 6232 events. 3909/6232 cut-off events. For 17688/17696 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 37690 event pairs, 1239 based on Foata normal form. 10/6048 useless extension candidates. Maximal degree in co-relation 20420. Up to 5124 conditions per place. [2024-06-28 01:42:32,590 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 119 selfloop transitions, 45 changer transitions 0/172 dead transitions. [2024-06-28 01:42:32,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 172 transitions, 1591 flow [2024-06-28 01:42:32,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:42:32,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:42:32,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 01:42:32,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5341614906832298 [2024-06-28 01:42:32,593 INFO L175 Difference]: Start difference. First operand has 82 places, 92 transitions, 713 flow. Second operand 7 states and 172 transitions. [2024-06-28 01:42:32,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 172 transitions, 1591 flow [2024-06-28 01:42:32,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 172 transitions, 1365 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 01:42:32,626 INFO L231 Difference]: Finished difference. Result has 85 places, 125 transitions, 1033 flow [2024-06-28 01:42:32,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1033, PETRI_PLACES=85, PETRI_TRANSITIONS=125} [2024-06-28 01:42:32,627 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 33 predicate places. [2024-06-28 01:42:32,627 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 125 transitions, 1033 flow [2024-06-28 01:42:32,627 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 01:42:32,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:32,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:32,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:42:32,628 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 01:42:32,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:32,629 INFO L85 PathProgramCache]: Analyzing trace with hash -2082750932, now seen corresponding path program 2 times [2024-06-28 01:42:32,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:32,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003173661] [2024-06-28 01:42:32,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:32,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:33,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:33,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:33,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003173661] [2024-06-28 01:42:33,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003173661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:33,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:33,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:42:33,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665377876] [2024-06-28 01:42:33,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:33,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:42:33,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:33,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:42:33,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:42:33,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:33,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 125 transitions, 1033 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 01:42:33,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:33,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:33,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:34,233 INFO L124 PetriNetUnfolderBase]: 3951/6288 cut-off events. [2024-06-28 01:42:34,233 INFO L125 PetriNetUnfolderBase]: For 20823/20831 co-relation queries the response was YES. [2024-06-28 01:42:34,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22378 conditions, 6288 events. 3951/6288 cut-off events. For 20823/20831 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 37967 event pairs, 1247 based on Foata normal form. 5/6091 useless extension candidates. Maximal degree in co-relation 22343. Up to 5144 conditions per place. [2024-06-28 01:42:34,266 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 121 selfloop transitions, 53 changer transitions 0/182 dead transitions. [2024-06-28 01:42:34,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 182 transitions, 1701 flow [2024-06-28 01:42:34,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:42:34,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:42:34,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 01:42:34,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372670807453416 [2024-06-28 01:42:34,269 INFO L175 Difference]: Start difference. First operand has 85 places, 125 transitions, 1033 flow. Second operand 7 states and 173 transitions. [2024-06-28 01:42:34,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 182 transitions, 1701 flow [2024-06-28 01:42:34,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 182 transitions, 1647 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 01:42:34,309 INFO L231 Difference]: Finished difference. Result has 90 places, 136 transitions, 1211 flow [2024-06-28 01:42:34,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1211, PETRI_PLACES=90, PETRI_TRANSITIONS=136} [2024-06-28 01:42:34,310 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 38 predicate places. [2024-06-28 01:42:34,310 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 136 transitions, 1211 flow [2024-06-28 01:42:34,310 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 01:42:34,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:34,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:34,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:42:34,311 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 01:42:34,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:34,311 INFO L85 PathProgramCache]: Analyzing trace with hash 221326366, now seen corresponding path program 3 times [2024-06-28 01:42:34,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:34,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096216883] [2024-06-28 01:42:34,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:34,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:34,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:34,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:34,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096216883] [2024-06-28 01:42:34,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096216883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:34,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:34,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:42:34,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609308977] [2024-06-28 01:42:34,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:34,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:42:34,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:34,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:42:34,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:42:34,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:34,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 136 transitions, 1211 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 01:42:34,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:34,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:34,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:35,862 INFO L124 PetriNetUnfolderBase]: 3941/6274 cut-off events. [2024-06-28 01:42:35,862 INFO L125 PetriNetUnfolderBase]: For 23940/23948 co-relation queries the response was YES. [2024-06-28 01:42:35,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22909 conditions, 6274 events. 3941/6274 cut-off events. For 23940/23948 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 37962 event pairs, 1247 based on Foata normal form. 5/6077 useless extension candidates. Maximal degree in co-relation 22872. Up to 5140 conditions per place. [2024-06-28 01:42:35,906 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 113 selfloop transitions, 57 changer transitions 0/178 dead transitions. [2024-06-28 01:42:35,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 178 transitions, 1732 flow [2024-06-28 01:42:35,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:42:35,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:42:35,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 01:42:35,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5279503105590062 [2024-06-28 01:42:35,908 INFO L175 Difference]: Start difference. First operand has 90 places, 136 transitions, 1211 flow. Second operand 7 states and 170 transitions. [2024-06-28 01:42:35,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 178 transitions, 1732 flow [2024-06-28 01:42:35,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 178 transitions, 1672 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-28 01:42:35,941 INFO L231 Difference]: Finished difference. Result has 95 places, 137 transitions, 1282 flow [2024-06-28 01:42:35,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1282, PETRI_PLACES=95, PETRI_TRANSITIONS=137} [2024-06-28 01:42:35,942 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 43 predicate places. [2024-06-28 01:42:35,942 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 137 transitions, 1282 flow [2024-06-28 01:42:35,943 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 01:42:35,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:35,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:35,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:42:35,943 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 01:42:35,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:35,943 INFO L85 PathProgramCache]: Analyzing trace with hash 221335294, now seen corresponding path program 1 times [2024-06-28 01:42:35,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:35,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281847446] [2024-06-28 01:42:35,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:35,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:37,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:37,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:37,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281847446] [2024-06-28 01:42:37,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281847446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:37,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:37,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:42:37,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647478699] [2024-06-28 01:42:37,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:37,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:42:37,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:37,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:42:37,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:42:37,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:42:37,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 137 transitions, 1282 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 01:42:37,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:37,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:42:37,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:38,108 INFO L124 PetriNetUnfolderBase]: 3331/5511 cut-off events. [2024-06-28 01:42:38,108 INFO L125 PetriNetUnfolderBase]: For 22517/22519 co-relation queries the response was YES. [2024-06-28 01:42:38,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20601 conditions, 5511 events. 3331/5511 cut-off events. For 22517/22519 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 34233 event pairs, 1044 based on Foata normal form. 4/5351 useless extension candidates. Maximal degree in co-relation 20561. Up to 4717 conditions per place. [2024-06-28 01:42:38,141 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 147 selfloop transitions, 17 changer transitions 0/173 dead transitions. [2024-06-28 01:42:38,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 173 transitions, 1730 flow [2024-06-28 01:42:38,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:42:38,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:42:38,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-28 01:42:38,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5093167701863354 [2024-06-28 01:42:38,143 INFO L175 Difference]: Start difference. First operand has 95 places, 137 transitions, 1282 flow. Second operand 7 states and 164 transitions. [2024-06-28 01:42:38,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 173 transitions, 1730 flow [2024-06-28 01:42:38,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 173 transitions, 1643 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 01:42:38,180 INFO L231 Difference]: Finished difference. Result has 98 places, 140 transitions, 1269 flow [2024-06-28 01:42:38,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1195, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1269, PETRI_PLACES=98, PETRI_TRANSITIONS=140} [2024-06-28 01:42:38,181 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 46 predicate places. [2024-06-28 01:42:38,181 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 140 transitions, 1269 flow [2024-06-28 01:42:38,181 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 01:42:38,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:38,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:38,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:42:38,182 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 01:42:38,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:38,183 INFO L85 PathProgramCache]: Analyzing trace with hash -478617584, now seen corresponding path program 1 times [2024-06-28 01:42:38,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:38,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352090258] [2024-06-28 01:42:38,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:38,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:38,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:38,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:38,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352090258] [2024-06-28 01:42:38,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352090258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:38,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:38,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:42:38,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714477524] [2024-06-28 01:42:38,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:38,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:42:38,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:38,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:42:38,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:42:38,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:42:38,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 140 transitions, 1269 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 01:42:38,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:38,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:42:38,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:39,635 INFO L124 PetriNetUnfolderBase]: 3336/5502 cut-off events. [2024-06-28 01:42:39,636 INFO L125 PetriNetUnfolderBase]: For 24913/24915 co-relation queries the response was YES. [2024-06-28 01:42:39,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20873 conditions, 5502 events. 3336/5502 cut-off events. For 24913/24915 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 34018 event pairs, 1272 based on Foata normal form. 1/5338 useless extension candidates. Maximal degree in co-relation 20832. Up to 4790 conditions per place. [2024-06-28 01:42:39,674 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 143 selfloop transitions, 11 changer transitions 0/163 dead transitions. [2024-06-28 01:42:39,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 163 transitions, 1706 flow [2024-06-28 01:42:39,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:42:39,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:42:39,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-06-28 01:42:39,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45652173913043476 [2024-06-28 01:42:39,676 INFO L175 Difference]: Start difference. First operand has 98 places, 140 transitions, 1269 flow. Second operand 6 states and 126 transitions. [2024-06-28 01:42:39,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 163 transitions, 1706 flow [2024-06-28 01:42:39,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 163 transitions, 1648 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 01:42:39,714 INFO L231 Difference]: Finished difference. Result has 101 places, 149 transitions, 1350 flow [2024-06-28 01:42:39,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1350, PETRI_PLACES=101, PETRI_TRANSITIONS=149} [2024-06-28 01:42:39,715 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 49 predicate places. [2024-06-28 01:42:39,715 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 149 transitions, 1350 flow [2024-06-28 01:42:39,715 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 01:42:39,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:39,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:39,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:42:39,716 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 01:42:39,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:39,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1362689572, now seen corresponding path program 1 times [2024-06-28 01:42:39,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:39,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234086417] [2024-06-28 01:42:39,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:39,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:40,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:40,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:40,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234086417] [2024-06-28 01:42:40,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234086417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:40,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:40,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:42:40,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847950983] [2024-06-28 01:42:40,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:40,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:42:40,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:40,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:42:40,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:42:40,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:40,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 149 transitions, 1350 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 01:42:40,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:40,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:40,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:41,347 INFO L124 PetriNetUnfolderBase]: 4037/6445 cut-off events. [2024-06-28 01:42:41,347 INFO L125 PetriNetUnfolderBase]: For 33849/33855 co-relation queries the response was YES. [2024-06-28 01:42:41,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25460 conditions, 6445 events. 4037/6445 cut-off events. For 33849/33855 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 39280 event pairs, 1254 based on Foata normal form. 5/6254 useless extension candidates. Maximal degree in co-relation 25416. Up to 5222 conditions per place. [2024-06-28 01:42:41,397 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 130 selfloop transitions, 62 changer transitions 0/200 dead transitions. [2024-06-28 01:42:41,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 200 transitions, 2055 flow [2024-06-28 01:42:41,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:42:41,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:42:41,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 01:42:41,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403726708074534 [2024-06-28 01:42:41,400 INFO L175 Difference]: Start difference. First operand has 101 places, 149 transitions, 1350 flow. Second operand 7 states and 174 transitions. [2024-06-28 01:42:41,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 200 transitions, 2055 flow [2024-06-28 01:42:41,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 200 transitions, 2037 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-28 01:42:41,438 INFO L231 Difference]: Finished difference. Result has 108 places, 159 transitions, 1603 flow [2024-06-28 01:42:41,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1332, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1603, PETRI_PLACES=108, PETRI_TRANSITIONS=159} [2024-06-28 01:42:41,438 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 56 predicate places. [2024-06-28 01:42:41,438 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 159 transitions, 1603 flow [2024-06-28 01:42:41,439 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 01:42:41,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:41,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:41,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:42:41,440 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 01:42:41,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:41,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1362683992, now seen corresponding path program 2 times [2024-06-28 01:42:41,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:41,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874988858] [2024-06-28 01:42:41,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:41,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:42,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:42,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:42,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874988858] [2024-06-28 01:42:42,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874988858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:42,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:42,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:42:42,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345372066] [2024-06-28 01:42:42,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:42,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:42:42,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:42,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:42:42,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:42:42,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:42,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 159 transitions, 1603 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 01:42:42,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:42,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:42,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:43,084 INFO L124 PetriNetUnfolderBase]: 4027/6445 cut-off events. [2024-06-28 01:42:43,085 INFO L125 PetriNetUnfolderBase]: For 37510/37520 co-relation queries the response was YES. [2024-06-28 01:42:43,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26288 conditions, 6445 events. 4027/6445 cut-off events. For 37510/37520 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 39403 event pairs, 1238 based on Foata normal form. 11/6260 useless extension candidates. Maximal degree in co-relation 26240. Up to 5214 conditions per place. [2024-06-28 01:42:43,124 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 131 selfloop transitions, 65 changer transitions 0/204 dead transitions. [2024-06-28 01:42:43,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 204 transitions, 2202 flow [2024-06-28 01:42:43,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:42:43,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:42:43,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 01:42:43,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546583850931677 [2024-06-28 01:42:43,126 INFO L175 Difference]: Start difference. First operand has 108 places, 159 transitions, 1603 flow. Second operand 7 states and 176 transitions. [2024-06-28 01:42:43,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 204 transitions, 2202 flow [2024-06-28 01:42:43,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 204 transitions, 2110 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 01:42:43,180 INFO L231 Difference]: Finished difference. Result has 113 places, 161 transitions, 1707 flow [2024-06-28 01:42:43,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1512, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1707, PETRI_PLACES=113, PETRI_TRANSITIONS=161} [2024-06-28 01:42:43,180 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 61 predicate places. [2024-06-28 01:42:43,180 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 161 transitions, 1707 flow [2024-06-28 01:42:43,180 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 01:42:43,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:43,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:43,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:42:43,181 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 01:42:43,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:43,181 INFO L85 PathProgramCache]: Analyzing trace with hash 692010088, now seen corresponding path program 3 times [2024-06-28 01:42:43,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:43,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42781789] [2024-06-28 01:42:43,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:43,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:43,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:43,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:43,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42781789] [2024-06-28 01:42:43,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42781789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:43,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:43,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:42:43,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416523133] [2024-06-28 01:42:43,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:43,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:42:43,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:43,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:42:43,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:42:43,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:43,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 161 transitions, 1707 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 01:42:43,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:43,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:43,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:44,854 INFO L124 PetriNetUnfolderBase]: 4017/6417 cut-off events. [2024-06-28 01:42:44,854 INFO L125 PetriNetUnfolderBase]: For 41270/41282 co-relation queries the response was YES. [2024-06-28 01:42:44,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26659 conditions, 6417 events. 4017/6417 cut-off events. For 41270/41282 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 38986 event pairs, 1273 based on Foata normal form. 9/6226 useless extension candidates. Maximal degree in co-relation 26609. Up to 5206 conditions per place. [2024-06-28 01:42:44,904 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 127 selfloop transitions, 60 changer transitions 0/195 dead transitions. [2024-06-28 01:42:44,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 195 transitions, 2192 flow [2024-06-28 01:42:44,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:42:44,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:42:44,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 01:42:44,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124223602484472 [2024-06-28 01:42:44,906 INFO L175 Difference]: Start difference. First operand has 113 places, 161 transitions, 1707 flow. Second operand 7 states and 165 transitions. [2024-06-28 01:42:44,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 195 transitions, 2192 flow [2024-06-28 01:42:44,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 195 transitions, 2097 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 01:42:44,962 INFO L231 Difference]: Finished difference. Result has 116 places, 162 transitions, 1752 flow [2024-06-28 01:42:44,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1613, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1752, PETRI_PLACES=116, PETRI_TRANSITIONS=162} [2024-06-28 01:42:44,963 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 64 predicate places. [2024-06-28 01:42:44,963 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 162 transitions, 1752 flow [2024-06-28 01:42:44,963 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 01:42:44,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:44,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:44,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:42:44,963 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:44,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:44,964 INFO L85 PathProgramCache]: Analyzing trace with hash -455662143, now seen corresponding path program 1 times [2024-06-28 01:42:44,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:44,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301914866] [2024-06-28 01:42:44,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:44,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:45,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:45,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:45,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301914866] [2024-06-28 01:42:45,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301914866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:45,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:45,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:42:45,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178396624] [2024-06-28 01:42:45,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:45,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:42:45,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:45,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:42:45,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:42:45,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:45,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 162 transitions, 1752 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 01:42:45,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:45,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:45,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:46,725 INFO L124 PetriNetUnfolderBase]: 4059/6473 cut-off events. [2024-06-28 01:42:46,725 INFO L125 PetriNetUnfolderBase]: For 44854/44860 co-relation queries the response was YES. [2024-06-28 01:42:46,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27134 conditions, 6473 events. 4059/6473 cut-off events. For 44854/44860 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 39273 event pairs, 986 based on Foata normal form. 8/6287 useless extension candidates. Maximal degree in co-relation 27083. Up to 5311 conditions per place. [2024-06-28 01:42:46,763 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 136 selfloop transitions, 64 changer transitions 0/208 dead transitions. [2024-06-28 01:42:46,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 208 transitions, 2386 flow [2024-06-28 01:42:46,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:42:46,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:42:46,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 01:42:46,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5279503105590062 [2024-06-28 01:42:46,765 INFO L175 Difference]: Start difference. First operand has 116 places, 162 transitions, 1752 flow. Second operand 7 states and 170 transitions. [2024-06-28 01:42:46,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 208 transitions, 2386 flow [2024-06-28 01:42:46,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 208 transitions, 2299 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 01:42:46,826 INFO L231 Difference]: Finished difference. Result has 119 places, 166 transitions, 1848 flow [2024-06-28 01:42:46,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1665, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1848, PETRI_PLACES=119, PETRI_TRANSITIONS=166} [2024-06-28 01:42:46,827 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 67 predicate places. [2024-06-28 01:42:46,827 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 166 transitions, 1848 flow [2024-06-28 01:42:46,827 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 01:42:46,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:46,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:46,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:42:46,827 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 01:42:46,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:46,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1521382577, now seen corresponding path program 2 times [2024-06-28 01:42:46,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:46,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070604912] [2024-06-28 01:42:46,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:46,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:47,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:47,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:47,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070604912] [2024-06-28 01:42:47,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070604912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:47,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:47,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:42:47,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85362061] [2024-06-28 01:42:47,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:47,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:42:47,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:47,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:42:47,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:42:47,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:47,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 166 transitions, 1848 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 01:42:47,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:47,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:47,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:48,559 INFO L124 PetriNetUnfolderBase]: 4051/6464 cut-off events. [2024-06-28 01:42:48,560 INFO L125 PetriNetUnfolderBase]: For 49259/49265 co-relation queries the response was YES. [2024-06-28 01:42:48,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27494 conditions, 6464 events. 4051/6464 cut-off events. For 49259/49265 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 39312 event pairs, 1280 based on Foata normal form. 8/6276 useless extension candidates. Maximal degree in co-relation 27441. Up to 5462 conditions per place. [2024-06-28 01:42:48,613 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 127 selfloop transitions, 71 changer transitions 0/206 dead transitions. [2024-06-28 01:42:48,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 206 transitions, 2372 flow [2024-06-28 01:42:48,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:42:48,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:42:48,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 01:42:48,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-28 01:42:48,615 INFO L175 Difference]: Start difference. First operand has 119 places, 166 transitions, 1848 flow. Second operand 7 states and 168 transitions. [2024-06-28 01:42:48,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 206 transitions, 2372 flow [2024-06-28 01:42:48,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 206 transitions, 2284 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 01:42:48,663 INFO L231 Difference]: Finished difference. Result has 123 places, 166 transitions, 1914 flow [2024-06-28 01:42:48,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1760, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1914, PETRI_PLACES=123, PETRI_TRANSITIONS=166} [2024-06-28 01:42:48,664 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 71 predicate places. [2024-06-28 01:42:48,664 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 166 transitions, 1914 flow [2024-06-28 01:42:48,664 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 01:42:48,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:48,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:48,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:42:48,665 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 01:42:48,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:48,665 INFO L85 PathProgramCache]: Analyzing trace with hash -706288257, now seen corresponding path program 1 times [2024-06-28 01:42:48,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:48,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456044451] [2024-06-28 01:42:48,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:48,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:49,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:49,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:49,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456044451] [2024-06-28 01:42:49,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456044451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:49,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:49,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:49,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979485251] [2024-06-28 01:42:49,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:49,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:49,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:49,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:49,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:49,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:49,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 166 transitions, 1914 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 01:42:49,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:49,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:49,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:51,044 INFO L124 PetriNetUnfolderBase]: 4239/6752 cut-off events. [2024-06-28 01:42:51,044 INFO L125 PetriNetUnfolderBase]: For 57878/57884 co-relation queries the response was YES. [2024-06-28 01:42:51,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29170 conditions, 6752 events. 4239/6752 cut-off events. For 57878/57884 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 41253 event pairs, 1146 based on Foata normal form. 25/6579 useless extension candidates. Maximal degree in co-relation 29115. Up to 5312 conditions per place. [2024-06-28 01:42:51,079 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 142 selfloop transitions, 68 changer transitions 0/218 dead transitions. [2024-06-28 01:42:51,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 218 transitions, 2526 flow [2024-06-28 01:42:51,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:51,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:51,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 01:42:51,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-06-28 01:42:51,081 INFO L175 Difference]: Start difference. First operand has 123 places, 166 transitions, 1914 flow. Second operand 8 states and 196 transitions. [2024-06-28 01:42:51,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 218 transitions, 2526 flow [2024-06-28 01:42:51,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 218 transitions, 2373 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 01:42:51,130 INFO L231 Difference]: Finished difference. Result has 125 places, 169 transitions, 1946 flow [2024-06-28 01:42:51,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1761, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1946, PETRI_PLACES=125, PETRI_TRANSITIONS=169} [2024-06-28 01:42:51,130 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 73 predicate places. [2024-06-28 01:42:51,130 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 169 transitions, 1946 flow [2024-06-28 01:42:51,131 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 01:42:51,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:51,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:51,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:42:51,131 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:51,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:51,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1731292593, now seen corresponding path program 1 times [2024-06-28 01:42:51,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:51,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896900158] [2024-06-28 01:42:51,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:51,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:51,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:51,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:51,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:51,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896900158] [2024-06-28 01:42:51,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896900158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:51,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:51,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:42:51,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913287488] [2024-06-28 01:42:51,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:51,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:42:51,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:51,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:42:51,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:42:51,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:51,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 169 transitions, 1946 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:51,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:51,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:51,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:52,664 INFO L124 PetriNetUnfolderBase]: 4259/6785 cut-off events. [2024-06-28 01:42:52,664 INFO L125 PetriNetUnfolderBase]: For 59754/59760 co-relation queries the response was YES. [2024-06-28 01:42:52,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30242 conditions, 6785 events. 4259/6785 cut-off events. For 59754/59760 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 41171 event pairs, 1484 based on Foata normal form. 7/6593 useless extension candidates. Maximal degree in co-relation 30186. Up to 6072 conditions per place. [2024-06-28 01:42:52,711 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 179 selfloop transitions, 16 changer transitions 0/203 dead transitions. [2024-06-28 01:42:52,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 203 transitions, 2540 flow [2024-06-28 01:42:52,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:42:52,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:42:52,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-28 01:42:52,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48188405797101447 [2024-06-28 01:42:52,713 INFO L175 Difference]: Start difference. First operand has 125 places, 169 transitions, 1946 flow. Second operand 6 states and 133 transitions. [2024-06-28 01:42:52,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 203 transitions, 2540 flow [2024-06-28 01:42:52,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 203 transitions, 2381 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 01:42:52,778 INFO L231 Difference]: Finished difference. Result has 126 places, 178 transitions, 1968 flow [2024-06-28 01:42:52,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1795, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1968, PETRI_PLACES=126, PETRI_TRANSITIONS=178} [2024-06-28 01:42:52,778 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 74 predicate places. [2024-06-28 01:42:52,778 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 178 transitions, 1968 flow [2024-06-28 01:42:52,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:52,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:52,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:52,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:42:52,779 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:52,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:52,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1807071281, now seen corresponding path program 2 times [2024-06-28 01:42:52,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:52,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766289076] [2024-06-28 01:42:52,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:52,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:52,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:53,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:53,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:53,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766289076] [2024-06-28 01:42:53,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766289076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:53,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:53,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:53,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443537221] [2024-06-28 01:42:53,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:53,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:53,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:53,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:53,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:53,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:53,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 178 transitions, 1968 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 01:42:53,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:53,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:53,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:54,938 INFO L124 PetriNetUnfolderBase]: 4293/6802 cut-off events. [2024-06-28 01:42:54,938 INFO L125 PetriNetUnfolderBase]: For 63282/63293 co-relation queries the response was YES. [2024-06-28 01:42:54,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30784 conditions, 6802 events. 4293/6802 cut-off events. For 63282/63293 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 41164 event pairs, 1260 based on Foata normal form. 6/6604 useless extension candidates. Maximal degree in co-relation 30726. Up to 5587 conditions per place. [2024-06-28 01:42:54,985 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 140 selfloop transitions, 76 changer transitions 0/224 dead transitions. [2024-06-28 01:42:54,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 224 transitions, 2588 flow [2024-06-28 01:42:54,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:54,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:54,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 01:42:54,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163043478260869 [2024-06-28 01:42:54,988 INFO L175 Difference]: Start difference. First operand has 126 places, 178 transitions, 1968 flow. Second operand 8 states and 190 transitions. [2024-06-28 01:42:54,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 224 transitions, 2588 flow [2024-06-28 01:42:55,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 224 transitions, 2549 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 01:42:55,055 INFO L231 Difference]: Finished difference. Result has 131 places, 181 transitions, 2137 flow [2024-06-28 01:42:55,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2137, PETRI_PLACES=131, PETRI_TRANSITIONS=181} [2024-06-28 01:42:55,056 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 79 predicate places. [2024-06-28 01:42:55,056 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 181 transitions, 2137 flow [2024-06-28 01:42:55,056 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 01:42:55,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:55,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:55,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:42:55,056 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 01:42:55,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:55,057 INFO L85 PathProgramCache]: Analyzing trace with hash -2045117347, now seen corresponding path program 3 times [2024-06-28 01:42:55,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:55,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387649478] [2024-06-28 01:42:55,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:55,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:56,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:56,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:56,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387649478] [2024-06-28 01:42:56,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387649478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:56,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:56,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:56,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774181977] [2024-06-28 01:42:56,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:56,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:56,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:56,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:56,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:56,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:56,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 181 transitions, 2137 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 01:42:56,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:56,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:56,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:57,353 INFO L124 PetriNetUnfolderBase]: 4327/6747 cut-off events. [2024-06-28 01:42:57,353 INFO L125 PetriNetUnfolderBase]: For 72478/72489 co-relation queries the response was YES. [2024-06-28 01:42:57,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32245 conditions, 6747 events. 4327/6747 cut-off events. For 72478/72489 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 40389 event pairs, 1137 based on Foata normal form. 6/6584 useless extension candidates. Maximal degree in co-relation 32186. Up to 5305 conditions per place. [2024-06-28 01:42:57,401 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 141 selfloop transitions, 87 changer transitions 0/236 dead transitions. [2024-06-28 01:42:57,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 236 transitions, 2935 flow [2024-06-28 01:42:57,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:57,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:57,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 01:42:57,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-06-28 01:42:57,403 INFO L175 Difference]: Start difference. First operand has 131 places, 181 transitions, 2137 flow. Second operand 8 states and 196 transitions. [2024-06-28 01:42:57,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 236 transitions, 2935 flow [2024-06-28 01:42:57,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 236 transitions, 2751 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 01:42:57,468 INFO L231 Difference]: Finished difference. Result has 133 places, 187 transitions, 2237 flow [2024-06-28 01:42:57,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1953, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2237, PETRI_PLACES=133, PETRI_TRANSITIONS=187} [2024-06-28 01:42:57,469 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 81 predicate places. [2024-06-28 01:42:57,469 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 187 transitions, 2237 flow [2024-06-28 01:42:57,469 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 01:42:57,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:57,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:57,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:42:57,470 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 01:42:57,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:57,470 INFO L85 PathProgramCache]: Analyzing trace with hash 2013377919, now seen corresponding path program 4 times [2024-06-28 01:42:57,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:57,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112670352] [2024-06-28 01:42:57,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:57,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:58,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:58,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:58,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112670352] [2024-06-28 01:42:58,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112670352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:58,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:58,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:58,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328827406] [2024-06-28 01:42:58,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:58,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:58,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:58,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:58,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:58,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:58,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 187 transitions, 2237 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 01:42:58,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:58,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:58,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:59,811 INFO L124 PetriNetUnfolderBase]: 4319/6735 cut-off events. [2024-06-28 01:42:59,811 INFO L125 PetriNetUnfolderBase]: For 77658/77669 co-relation queries the response was YES. [2024-06-28 01:42:59,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32781 conditions, 6735 events. 4319/6735 cut-off events. For 77658/77669 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 40229 event pairs, 1266 based on Foata normal form. 6/6572 useless extension candidates. Maximal degree in co-relation 32721. Up to 5625 conditions per place. [2024-06-28 01:42:59,856 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 152 selfloop transitions, 73 changer transitions 0/233 dead transitions. [2024-06-28 01:42:59,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 233 transitions, 2847 flow [2024-06-28 01:42:59,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:59,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:59,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 01:42:59,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190217391304348 [2024-06-28 01:42:59,857 INFO L175 Difference]: Start difference. First operand has 133 places, 187 transitions, 2237 flow. Second operand 8 states and 191 transitions. [2024-06-28 01:42:59,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 233 transitions, 2847 flow [2024-06-28 01:42:59,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 233 transitions, 2641 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-28 01:42:59,954 INFO L231 Difference]: Finished difference. Result has 136 places, 187 transitions, 2185 flow [2024-06-28 01:42:59,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2031, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2185, PETRI_PLACES=136, PETRI_TRANSITIONS=187} [2024-06-28 01:42:59,955 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 84 predicate places. [2024-06-28 01:42:59,955 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 187 transitions, 2185 flow [2024-06-28 01:42:59,955 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 01:42:59,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:59,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:59,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:42:59,956 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:59,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:59,956 INFO L85 PathProgramCache]: Analyzing trace with hash -389964753, now seen corresponding path program 2 times [2024-06-28 01:42:59,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:59,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822881734] [2024-06-28 01:42:59,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:59,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:00,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:00,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:00,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822881734] [2024-06-28 01:43:00,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822881734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:00,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:00,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:43:00,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908631790] [2024-06-28 01:43:00,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:00,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:43:00,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:00,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:43:00,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:43:00,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:43:00,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 187 transitions, 2185 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:00,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:00,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:43:00,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:01,524 INFO L124 PetriNetUnfolderBase]: 4324/6763 cut-off events. [2024-06-28 01:43:01,524 INFO L125 PetriNetUnfolderBase]: For 77256/77282 co-relation queries the response was YES. [2024-06-28 01:43:01,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32435 conditions, 6763 events. 4324/6763 cut-off events. For 77256/77282 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 40282 event pairs, 1494 based on Foata normal form. 21/6623 useless extension candidates. Maximal degree in co-relation 32374. Up to 6144 conditions per place. [2024-06-28 01:43:01,585 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 188 selfloop transitions, 20 changer transitions 0/216 dead transitions. [2024-06-28 01:43:01,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 216 transitions, 2749 flow [2024-06-28 01:43:01,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:43:01,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:43:01,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-28 01:43:01,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4746376811594203 [2024-06-28 01:43:01,586 INFO L175 Difference]: Start difference. First operand has 136 places, 187 transitions, 2185 flow. Second operand 6 states and 131 transitions. [2024-06-28 01:43:01,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 216 transitions, 2749 flow [2024-06-28 01:43:01,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 216 transitions, 2566 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 01:43:01,682 INFO L231 Difference]: Finished difference. Result has 136 places, 193 transitions, 2117 flow [2024-06-28 01:43:01,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2002, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2117, PETRI_PLACES=136, PETRI_TRANSITIONS=193} [2024-06-28 01:43:01,683 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 84 predicate places. [2024-06-28 01:43:01,683 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 193 transitions, 2117 flow [2024-06-28 01:43:01,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:01,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:01,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:01,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:43:01,684 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 01:43:01,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:01,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1534052599, now seen corresponding path program 1 times [2024-06-28 01:43:01,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:01,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405030840] [2024-06-28 01:43:01,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:01,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:02,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:02,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:02,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405030840] [2024-06-28 01:43:02,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405030840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:02,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:02,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:43:02,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606775146] [2024-06-28 01:43:02,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:02,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:43:02,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:02,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:43:02,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:43:02,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:43:02,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 193 transitions, 2117 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 01:43:02,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:02,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:43:02,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:03,127 INFO L124 PetriNetUnfolderBase]: 3986/6390 cut-off events. [2024-06-28 01:43:03,127 INFO L125 PetriNetUnfolderBase]: For 82619/82621 co-relation queries the response was YES. [2024-06-28 01:43:03,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31443 conditions, 6390 events. 3986/6390 cut-off events. For 82619/82621 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 39186 event pairs, 1311 based on Foata normal form. 2/6218 useless extension candidates. Maximal degree in co-relation 31380. Up to 5647 conditions per place. [2024-06-28 01:43:03,171 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 194 selfloop transitions, 14 changer transitions 0/220 dead transitions. [2024-06-28 01:43:03,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 220 transitions, 2679 flow [2024-06-28 01:43:03,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:43:03,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:43:03,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-28 01:43:03,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-06-28 01:43:03,172 INFO L175 Difference]: Start difference. First operand has 136 places, 193 transitions, 2117 flow. Second operand 6 states and 135 transitions. [2024-06-28 01:43:03,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 220 transitions, 2679 flow [2024-06-28 01:43:03,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 220 transitions, 2645 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-28 01:43:03,277 INFO L231 Difference]: Finished difference. Result has 141 places, 200 transitions, 2212 flow [2024-06-28 01:43:03,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2083, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2212, PETRI_PLACES=141, PETRI_TRANSITIONS=200} [2024-06-28 01:43:03,278 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 89 predicate places. [2024-06-28 01:43:03,278 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 200 transitions, 2212 flow [2024-06-28 01:43:03,278 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 01:43:03,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:03,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:03,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:43:03,279 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 01:43:03,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:03,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1719829041, now seen corresponding path program 2 times [2024-06-28 01:43:03,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:03,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666241782] [2024-06-28 01:43:03,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:03,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:03,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:03,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:03,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666241782] [2024-06-28 01:43:03,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666241782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:03,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:03,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:03,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585610615] [2024-06-28 01:43:03,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:03,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:03,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:03,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:03,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:03,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:43:03,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 200 transitions, 2212 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 01:43:03,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:03,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:43:03,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:04,839 INFO L124 PetriNetUnfolderBase]: 3995/6405 cut-off events. [2024-06-28 01:43:04,839 INFO L125 PetriNetUnfolderBase]: For 87772/87780 co-relation queries the response was YES. [2024-06-28 01:43:04,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32495 conditions, 6405 events. 3995/6405 cut-off events. For 87772/87780 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 39382 event pairs, 1305 based on Foata normal form. 8/6239 useless extension candidates. Maximal degree in co-relation 32429. Up to 5628 conditions per place. [2024-06-28 01:43:04,886 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 190 selfloop transitions, 21 changer transitions 0/223 dead transitions. [2024-06-28 01:43:04,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 223 transitions, 2748 flow [2024-06-28 01:43:04,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:43:04,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:43:04,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-28 01:43:04,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4927536231884058 [2024-06-28 01:43:04,888 INFO L175 Difference]: Start difference. First operand has 141 places, 200 transitions, 2212 flow. Second operand 6 states and 136 transitions. [2024-06-28 01:43:04,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 223 transitions, 2748 flow [2024-06-28 01:43:04,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 223 transitions, 2709 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 01:43:04,983 INFO L231 Difference]: Finished difference. Result has 144 places, 203 transitions, 2258 flow [2024-06-28 01:43:04,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2173, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2258, PETRI_PLACES=144, PETRI_TRANSITIONS=203} [2024-06-28 01:43:04,983 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 92 predicate places. [2024-06-28 01:43:04,984 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 203 transitions, 2258 flow [2024-06-28 01:43:04,984 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 01:43:04,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:04,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:04,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:43:04,984 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 01:43:04,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:04,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1719820113, now seen corresponding path program 1 times [2024-06-28 01:43:04,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:04,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502702830] [2024-06-28 01:43:04,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:04,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:05,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:05,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:05,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502702830] [2024-06-28 01:43:05,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502702830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:05,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:05,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:05,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688210423] [2024-06-28 01:43:05,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:05,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:05,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:05,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:05,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:05,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:43:05,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 203 transitions, 2258 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 01:43:05,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:05,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:43:05,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:06,888 INFO L124 PetriNetUnfolderBase]: 4379/6834 cut-off events. [2024-06-28 01:43:06,889 INFO L125 PetriNetUnfolderBase]: For 93016/93018 co-relation queries the response was YES. [2024-06-28 01:43:06,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34954 conditions, 6834 events. 4379/6834 cut-off events. For 93016/93018 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 40690 event pairs, 1501 based on Foata normal form. 1/6675 useless extension candidates. Maximal degree in co-relation 34887. Up to 6247 conditions per place. [2024-06-28 01:43:06,934 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 207 selfloop transitions, 17 changer transitions 0/232 dead transitions. [2024-06-28 01:43:06,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 232 transitions, 2854 flow [2024-06-28 01:43:06,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:06,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:06,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-06-28 01:43:06,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46273291925465837 [2024-06-28 01:43:06,935 INFO L175 Difference]: Start difference. First operand has 144 places, 203 transitions, 2258 flow. Second operand 7 states and 149 transitions. [2024-06-28 01:43:06,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 232 transitions, 2854 flow [2024-06-28 01:43:07,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 232 transitions, 2795 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:07,049 INFO L231 Difference]: Finished difference. Result has 147 places, 207 transitions, 2294 flow [2024-06-28 01:43:07,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2199, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2294, PETRI_PLACES=147, PETRI_TRANSITIONS=207} [2024-06-28 01:43:07,051 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 95 predicate places. [2024-06-28 01:43:07,051 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 207 transitions, 2294 flow [2024-06-28 01:43:07,051 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 01:43:07,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:07,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:07,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:43:07,052 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 01:43:07,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:07,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1505653655, now seen corresponding path program 1 times [2024-06-28 01:43:07,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:07,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251956258] [2024-06-28 01:43:07,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:07,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:07,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:07,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:07,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251956258] [2024-06-28 01:43:07,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251956258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:07,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:07,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:07,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471368883] [2024-06-28 01:43:07,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:07,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:07,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:07,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:07,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:07,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:43:07,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 207 transitions, 2294 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 01:43:07,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:07,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:43:07,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:08,977 INFO L124 PetriNetUnfolderBase]: 4605/7328 cut-off events. [2024-06-28 01:43:08,977 INFO L125 PetriNetUnfolderBase]: For 112070/112078 co-relation queries the response was YES. [2024-06-28 01:43:09,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37988 conditions, 7328 events. 4605/7328 cut-off events. For 112070/112078 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 44876 event pairs, 869 based on Foata normal form. 18/7144 useless extension candidates. Maximal degree in co-relation 37920. Up to 5104 conditions per place. [2024-06-28 01:43:09,030 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 189 selfloop transitions, 75 changer transitions 0/272 dead transitions. [2024-06-28 01:43:09,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 272 transitions, 3234 flow [2024-06-28 01:43:09,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:09,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:09,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 01:43:09,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5407608695652174 [2024-06-28 01:43:09,032 INFO L175 Difference]: Start difference. First operand has 147 places, 207 transitions, 2294 flow. Second operand 8 states and 199 transitions. [2024-06-28 01:43:09,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 272 transitions, 3234 flow [2024-06-28 01:43:09,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 272 transitions, 3145 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:09,167 INFO L231 Difference]: Finished difference. Result has 151 places, 217 transitions, 2530 flow [2024-06-28 01:43:09,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2205, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2530, PETRI_PLACES=151, PETRI_TRANSITIONS=217} [2024-06-28 01:43:09,168 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 99 predicate places. [2024-06-28 01:43:09,168 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 217 transitions, 2530 flow [2024-06-28 01:43:09,169 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 01:43:09,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:09,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:09,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:43:09,169 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 01:43:09,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:09,170 INFO L85 PathProgramCache]: Analyzing trace with hash 295117083, now seen corresponding path program 2 times [2024-06-28 01:43:09,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:09,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284315963] [2024-06-28 01:43:09,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:09,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:09,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:09,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:09,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284315963] [2024-06-28 01:43:09,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284315963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:09,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:09,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:09,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975815675] [2024-06-28 01:43:09,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:09,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:09,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:09,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:09,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:09,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:43:09,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 217 transitions, 2530 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 01:43:09,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:09,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:43:09,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:11,301 INFO L124 PetriNetUnfolderBase]: 4725/7512 cut-off events. [2024-06-28 01:43:11,301 INFO L125 PetriNetUnfolderBase]: For 124516/124524 co-relation queries the response was YES. [2024-06-28 01:43:11,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40221 conditions, 7512 events. 4725/7512 cut-off events. For 124516/124524 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 46167 event pairs, 1347 based on Foata normal form. 18/7327 useless extension candidates. Maximal degree in co-relation 40151. Up to 5847 conditions per place. [2024-06-28 01:43:11,363 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 190 selfloop transitions, 76 changer transitions 0/274 dead transitions. [2024-06-28 01:43:11,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 274 transitions, 3318 flow [2024-06-28 01:43:11,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:11,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:11,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 01:43:11,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5407608695652174 [2024-06-28 01:43:11,365 INFO L175 Difference]: Start difference. First operand has 151 places, 217 transitions, 2530 flow. Second operand 8 states and 199 transitions. [2024-06-28 01:43:11,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 274 transitions, 3318 flow [2024-06-28 01:43:11,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 274 transitions, 3208 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-28 01:43:11,554 INFO L231 Difference]: Finished difference. Result has 157 places, 221 transitions, 2662 flow [2024-06-28 01:43:11,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2420, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2662, PETRI_PLACES=157, PETRI_TRANSITIONS=221} [2024-06-28 01:43:11,555 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 105 predicate places. [2024-06-28 01:43:11,555 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 221 transitions, 2662 flow [2024-06-28 01:43:11,555 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 01:43:11,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:11,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:11,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:43:11,556 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 01:43:11,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:11,556 INFO L85 PathProgramCache]: Analyzing trace with hash -328572413, now seen corresponding path program 1 times [2024-06-28 01:43:11,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:11,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735055041] [2024-06-28 01:43:11,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:11,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:12,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:12,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:12,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735055041] [2024-06-28 01:43:12,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735055041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:12,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:12,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:12,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707252791] [2024-06-28 01:43:12,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:12,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:12,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:12,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:12,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:12,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:43:12,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 221 transitions, 2662 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 01:43:12,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:12,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:43:12,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:13,462 INFO L124 PetriNetUnfolderBase]: 4765/7591 cut-off events. [2024-06-28 01:43:13,462 INFO L125 PetriNetUnfolderBase]: For 126237/126253 co-relation queries the response was YES. [2024-06-28 01:43:13,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41124 conditions, 7591 events. 4765/7591 cut-off events. For 126237/126253 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 46809 event pairs, 1576 based on Foata normal form. 18/7402 useless extension candidates. Maximal degree in co-relation 41051. Up to 6649 conditions per place. [2024-06-28 01:43:13,518 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 232 selfloop transitions, 44 changer transitions 0/284 dead transitions. [2024-06-28 01:43:13,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 284 transitions, 3880 flow [2024-06-28 01:43:13,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:13,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:13,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-28 01:43:13,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5031055900621118 [2024-06-28 01:43:13,520 INFO L175 Difference]: Start difference. First operand has 157 places, 221 transitions, 2662 flow. Second operand 7 states and 162 transitions. [2024-06-28 01:43:13,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 284 transitions, 3880 flow [2024-06-28 01:43:13,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 284 transitions, 3736 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:13,713 INFO L231 Difference]: Finished difference. Result has 162 places, 251 transitions, 3255 flow [2024-06-28 01:43:13,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2538, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3255, PETRI_PLACES=162, PETRI_TRANSITIONS=251} [2024-06-28 01:43:13,714 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 110 predicate places. [2024-06-28 01:43:13,714 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 251 transitions, 3255 flow [2024-06-28 01:43:13,714 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 01:43:13,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:13,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:13,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:43:13,715 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:13,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:13,715 INFO L85 PathProgramCache]: Analyzing trace with hash -425823943, now seen corresponding path program 3 times [2024-06-28 01:43:13,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:13,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873050965] [2024-06-28 01:43:13,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:13,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:14,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:14,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:14,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873050965] [2024-06-28 01:43:14,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873050965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:14,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:14,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:14,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13937185] [2024-06-28 01:43:14,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:14,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:14,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:14,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:14,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:14,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:43:14,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 251 transitions, 3255 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 01:43:14,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:14,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:43:14,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:15,778 INFO L124 PetriNetUnfolderBase]: 4991/7952 cut-off events. [2024-06-28 01:43:15,778 INFO L125 PetriNetUnfolderBase]: For 146880/146900 co-relation queries the response was YES. [2024-06-28 01:43:15,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45221 conditions, 7952 events. 4991/7952 cut-off events. For 146880/146900 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 49427 event pairs, 1130 based on Foata normal form. 32/7780 useless extension candidates. Maximal degree in co-relation 45144. Up to 6142 conditions per place. [2024-06-28 01:43:15,852 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 213 selfloop transitions, 93 changer transitions 0/314 dead transitions. [2024-06-28 01:43:15,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 314 transitions, 4302 flow [2024-06-28 01:43:15,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:15,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:15,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-28 01:43:15,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5543478260869565 [2024-06-28 01:43:15,853 INFO L175 Difference]: Start difference. First operand has 162 places, 251 transitions, 3255 flow. Second operand 8 states and 204 transitions. [2024-06-28 01:43:15,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 314 transitions, 4302 flow [2024-06-28 01:43:16,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 314 transitions, 4217 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-28 01:43:16,093 INFO L231 Difference]: Finished difference. Result has 168 places, 256 transitions, 3485 flow [2024-06-28 01:43:16,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3170, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3485, PETRI_PLACES=168, PETRI_TRANSITIONS=256} [2024-06-28 01:43:16,094 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 116 predicate places. [2024-06-28 01:43:16,094 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 256 transitions, 3485 flow [2024-06-28 01:43:16,094 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 01:43:16,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:16,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:16,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:43:16,094 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 01:43:16,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:16,095 INFO L85 PathProgramCache]: Analyzing trace with hash -715880533, now seen corresponding path program 4 times [2024-06-28 01:43:16,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:16,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721295618] [2024-06-28 01:43:16,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:16,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:16,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:16,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:16,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:16,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721295618] [2024-06-28 01:43:16,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721295618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:16,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:16,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:16,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152687538] [2024-06-28 01:43:16,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:16,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:16,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:16,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:16,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:16,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:43:16,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 256 transitions, 3485 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 01:43:16,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:16,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:43:16,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:18,267 INFO L124 PetriNetUnfolderBase]: 5145/8195 cut-off events. [2024-06-28 01:43:18,268 INFO L125 PetriNetUnfolderBase]: For 163674/163694 co-relation queries the response was YES. [2024-06-28 01:43:18,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47509 conditions, 8195 events. 5145/8195 cut-off events. For 163674/163694 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 51329 event pairs, 1483 based on Foata normal form. 36/8024 useless extension candidates. Maximal degree in co-relation 47430. Up to 6711 conditions per place. [2024-06-28 01:43:18,352 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 211 selfloop transitions, 92 changer transitions 0/311 dead transitions. [2024-06-28 01:43:18,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 311 transitions, 4359 flow [2024-06-28 01:43:18,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:18,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:18,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 01:43:18,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5407608695652174 [2024-06-28 01:43:18,354 INFO L175 Difference]: Start difference. First operand has 168 places, 256 transitions, 3485 flow. Second operand 8 states and 199 transitions. [2024-06-28 01:43:18,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 311 transitions, 4359 flow [2024-06-28 01:43:18,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 311 transitions, 4207 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:18,605 INFO L231 Difference]: Finished difference. Result has 172 places, 258 transitions, 3583 flow [2024-06-28 01:43:18,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3339, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3583, PETRI_PLACES=172, PETRI_TRANSITIONS=258} [2024-06-28 01:43:18,606 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 120 predicate places. [2024-06-28 01:43:18,606 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 258 transitions, 3583 flow [2024-06-28 01:43:18,606 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 01:43:18,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:18,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:18,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:43:18,606 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 01:43:18,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:18,607 INFO L85 PathProgramCache]: Analyzing trace with hash -420313693, now seen corresponding path program 5 times [2024-06-28 01:43:18,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:18,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293177087] [2024-06-28 01:43:18,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:18,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:19,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:19,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:19,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293177087] [2024-06-28 01:43:19,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293177087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:19,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:19,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:19,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425560152] [2024-06-28 01:43:19,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:19,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:19,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:19,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:19,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:19,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:43:19,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 258 transitions, 3583 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 01:43:19,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:19,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:43:19,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:20,792 INFO L124 PetriNetUnfolderBase]: 5299/8415 cut-off events. [2024-06-28 01:43:20,792 INFO L125 PetriNetUnfolderBase]: For 171826/171834 co-relation queries the response was YES. [2024-06-28 01:43:20,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49205 conditions, 8415 events. 5299/8415 cut-off events. For 171826/171834 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 52752 event pairs, 1520 based on Foata normal form. 22/8232 useless extension candidates. Maximal degree in co-relation 49124. Up to 6945 conditions per place. [2024-06-28 01:43:20,865 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 211 selfloop transitions, 89 changer transitions 0/308 dead transitions. [2024-06-28 01:43:20,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 308 transitions, 4425 flow [2024-06-28 01:43:20,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:20,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:20,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:43:20,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.529891304347826 [2024-06-28 01:43:20,866 INFO L175 Difference]: Start difference. First operand has 172 places, 258 transitions, 3583 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:43:20,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 308 transitions, 4425 flow [2024-06-28 01:43:21,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 308 transitions, 4257 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 01:43:21,118 INFO L231 Difference]: Finished difference. Result has 175 places, 260 transitions, 3657 flow [2024-06-28 01:43:21,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3415, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3657, PETRI_PLACES=175, PETRI_TRANSITIONS=260} [2024-06-28 01:43:21,118 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 123 predicate places. [2024-06-28 01:43:21,119 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 260 transitions, 3657 flow [2024-06-28 01:43:21,119 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 01:43:21,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:21,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:21,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:43:21,119 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 01:43:21,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:21,119 INFO L85 PathProgramCache]: Analyzing trace with hash -710302951, now seen corresponding path program 1 times [2024-06-28 01:43:21,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:21,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042582375] [2024-06-28 01:43:21,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:21,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:22,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:22,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:22,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042582375] [2024-06-28 01:43:22,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042582375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:22,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:22,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:22,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622674408] [2024-06-28 01:43:22,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:22,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:22,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:22,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:22,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:22,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:43:22,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 260 transitions, 3657 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:22,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:22,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:43:22,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:23,685 INFO L124 PetriNetUnfolderBase]: 5385/8560 cut-off events. [2024-06-28 01:43:23,685 INFO L125 PetriNetUnfolderBase]: For 176781/176789 co-relation queries the response was YES. [2024-06-28 01:43:23,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50077 conditions, 8560 events. 5385/8560 cut-off events. For 176781/176789 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 53997 event pairs, 1501 based on Foata normal form. 14/8370 useless extension candidates. Maximal degree in co-relation 49995. Up to 6493 conditions per place. [2024-06-28 01:43:23,769 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 207 selfloop transitions, 97 changer transitions 0/312 dead transitions. [2024-06-28 01:43:23,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 312 transitions, 4517 flow [2024-06-28 01:43:23,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:23,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:23,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 01:43:23,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-06-28 01:43:23,770 INFO L175 Difference]: Start difference. First operand has 175 places, 260 transitions, 3657 flow. Second operand 8 states and 196 transitions. [2024-06-28 01:43:23,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 312 transitions, 4517 flow [2024-06-28 01:43:24,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 312 transitions, 4315 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:24,093 INFO L231 Difference]: Finished difference. Result has 177 places, 262 transitions, 3713 flow [2024-06-28 01:43:24,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3455, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3713, PETRI_PLACES=177, PETRI_TRANSITIONS=262} [2024-06-28 01:43:24,094 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 125 predicate places. [2024-06-28 01:43:24,094 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 262 transitions, 3713 flow [2024-06-28 01:43:24,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:24,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:24,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:24,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:43:24,095 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:24,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:24,095 INFO L85 PathProgramCache]: Analyzing trace with hash -2130461342, now seen corresponding path program 1 times [2024-06-28 01:43:24,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:24,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168705815] [2024-06-28 01:43:24,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:24,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:24,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:24,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:24,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168705815] [2024-06-28 01:43:24,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168705815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:24,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:24,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:24,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797896486] [2024-06-28 01:43:24,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:24,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:24,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:24,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:24,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:24,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:43:24,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 262 transitions, 3713 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 01:43:24,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:24,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:43:24,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:26,068 INFO L124 PetriNetUnfolderBase]: 5405/8586 cut-off events. [2024-06-28 01:43:26,068 INFO L125 PetriNetUnfolderBase]: For 174894/174908 co-relation queries the response was YES. [2024-06-28 01:43:26,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50254 conditions, 8586 events. 5405/8586 cut-off events. For 174894/174908 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 54031 event pairs, 1763 based on Foata normal form. 15/8396 useless extension candidates. Maximal degree in co-relation 50171. Up to 7796 conditions per place. [2024-06-28 01:43:26,151 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 269 selfloop transitions, 19 changer transitions 0/296 dead transitions. [2024-06-28 01:43:26,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 296 transitions, 4477 flow [2024-06-28 01:43:26,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:26,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:26,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-28 01:43:26,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4751552795031056 [2024-06-28 01:43:26,152 INFO L175 Difference]: Start difference. First operand has 177 places, 262 transitions, 3713 flow. Second operand 7 states and 153 transitions. [2024-06-28 01:43:26,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 296 transitions, 4477 flow [2024-06-28 01:43:26,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 296 transitions, 4251 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:26,448 INFO L231 Difference]: Finished difference. Result has 178 places, 265 transitions, 3583 flow [2024-06-28 01:43:26,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3487, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3583, PETRI_PLACES=178, PETRI_TRANSITIONS=265} [2024-06-28 01:43:26,449 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 126 predicate places. [2024-06-28 01:43:26,449 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 265 transitions, 3583 flow [2024-06-28 01:43:26,449 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 01:43:26,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:26,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:26,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:43:26,450 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:26,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:26,450 INFO L85 PathProgramCache]: Analyzing trace with hash -2130461745, now seen corresponding path program 2 times [2024-06-28 01:43:26,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:26,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467618023] [2024-06-28 01:43:26,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:26,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:27,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:27,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:27,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467618023] [2024-06-28 01:43:27,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467618023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:27,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:27,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:27,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71744121] [2024-06-28 01:43:27,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:27,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:27,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:27,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:27,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:27,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:43:27,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 265 transitions, 3583 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 01:43:27,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:27,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:43:27,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:28,478 INFO L124 PetriNetUnfolderBase]: 5493/8731 cut-off events. [2024-06-28 01:43:28,479 INFO L125 PetriNetUnfolderBase]: For 179181/179189 co-relation queries the response was YES. [2024-06-28 01:43:28,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50936 conditions, 8731 events. 5493/8731 cut-off events. For 179181/179189 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 55213 event pairs, 1779 based on Foata normal form. 8/8531 useless extension candidates. Maximal degree in co-relation 50852. Up to 7639 conditions per place. [2024-06-28 01:43:28,563 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 247 selfloop transitions, 47 changer transitions 0/302 dead transitions. [2024-06-28 01:43:28,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 302 transitions, 4469 flow [2024-06-28 01:43:28,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:28,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:28,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 01:43:28,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968944099378882 [2024-06-28 01:43:28,564 INFO L175 Difference]: Start difference. First operand has 178 places, 265 transitions, 3583 flow. Second operand 7 states and 160 transitions. [2024-06-28 01:43:28,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 302 transitions, 4469 flow [2024-06-28 01:43:28,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 302 transitions, 4403 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 01:43:28,844 INFO L231 Difference]: Finished difference. Result has 181 places, 273 transitions, 3750 flow [2024-06-28 01:43:28,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3517, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3750, PETRI_PLACES=181, PETRI_TRANSITIONS=273} [2024-06-28 01:43:28,844 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 129 predicate places. [2024-06-28 01:43:28,844 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 273 transitions, 3750 flow [2024-06-28 01:43:28,844 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 01:43:28,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:28,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:28,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:43:28,845 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:28,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:28,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1940527735, now seen corresponding path program 6 times [2024-06-28 01:43:28,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:28,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868931467] [2024-06-28 01:43:28,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:28,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:29,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:29,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:29,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868931467] [2024-06-28 01:43:29,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868931467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:29,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:29,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:29,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254407035] [2024-06-28 01:43:29,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:29,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:29,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:29,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:29,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:29,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:43:29,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 273 transitions, 3750 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 01:43:29,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:29,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:43:29,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:30,981 INFO L124 PetriNetUnfolderBase]: 5457/8677 cut-off events. [2024-06-28 01:43:30,982 INFO L125 PetriNetUnfolderBase]: For 192746/192766 co-relation queries the response was YES. [2024-06-28 01:43:31,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51688 conditions, 8677 events. 5457/8677 cut-off events. For 192746/192766 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 54747 event pairs, 1566 based on Foata normal form. 29/8492 useless extension candidates. Maximal degree in co-relation 51602. Up to 7169 conditions per place. [2024-06-28 01:43:31,064 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 225 selfloop transitions, 85 changer transitions 0/318 dead transitions. [2024-06-28 01:43:31,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 318 transitions, 4564 flow [2024-06-28 01:43:31,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:31,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:31,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 01:43:31,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163043478260869 [2024-06-28 01:43:31,066 INFO L175 Difference]: Start difference. First operand has 181 places, 273 transitions, 3750 flow. Second operand 8 states and 190 transitions. [2024-06-28 01:43:31,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 318 transitions, 4564 flow [2024-06-28 01:43:31,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 318 transitions, 4450 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-28 01:43:31,461 INFO L231 Difference]: Finished difference. Result has 186 places, 274 transitions, 3838 flow [2024-06-28 01:43:31,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3644, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3838, PETRI_PLACES=186, PETRI_TRANSITIONS=274} [2024-06-28 01:43:31,461 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 134 predicate places. [2024-06-28 01:43:31,462 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 274 transitions, 3838 flow [2024-06-28 01:43:31,462 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 01:43:31,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:31,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:31,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:43:31,462 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:31,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:31,463 INFO L85 PathProgramCache]: Analyzing trace with hash -441487705, now seen corresponding path program 2 times [2024-06-28 01:43:31,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:31,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777428577] [2024-06-28 01:43:31,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:31,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:32,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:32,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:32,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777428577] [2024-06-28 01:43:32,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777428577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:32,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:32,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:32,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803117953] [2024-06-28 01:43:32,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:32,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:32,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:32,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:32,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:32,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:43:32,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 274 transitions, 3838 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:32,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:32,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:43:32,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:33,929 INFO L124 PetriNetUnfolderBase]: 5437/8647 cut-off events. [2024-06-28 01:43:33,929 INFO L125 PetriNetUnfolderBase]: For 185344/185364 co-relation queries the response was YES. [2024-06-28 01:43:33,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51305 conditions, 8647 events. 5437/8647 cut-off events. For 185344/185364 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 54609 event pairs, 1521 based on Foata normal form. 21/8454 useless extension candidates. Maximal degree in co-relation 51217. Up to 6993 conditions per place. [2024-06-28 01:43:34,024 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 223 selfloop transitions, 89 changer transitions 0/320 dead transitions. [2024-06-28 01:43:34,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 320 transitions, 4646 flow [2024-06-28 01:43:34,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:34,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:34,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 01:43:34,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-28 01:43:34,026 INFO L175 Difference]: Start difference. First operand has 186 places, 274 transitions, 3838 flow. Second operand 8 states and 192 transitions. [2024-06-28 01:43:34,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 320 transitions, 4646 flow [2024-06-28 01:43:34,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 320 transitions, 4458 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:34,475 INFO L231 Difference]: Finished difference. Result has 188 places, 274 transitions, 3835 flow [2024-06-28 01:43:34,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3650, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3835, PETRI_PLACES=188, PETRI_TRANSITIONS=274} [2024-06-28 01:43:34,476 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 136 predicate places. [2024-06-28 01:43:34,476 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 274 transitions, 3835 flow [2024-06-28 01:43:34,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:34,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:34,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:34,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:43:34,477 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 01:43:34,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:34,477 INFO L85 PathProgramCache]: Analyzing trace with hash -432290935, now seen corresponding path program 3 times [2024-06-28 01:43:34,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:34,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63748990] [2024-06-28 01:43:34,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:34,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:35,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:35,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:35,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63748990] [2024-06-28 01:43:35,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63748990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:35,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:35,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:35,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939682672] [2024-06-28 01:43:35,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:35,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:35,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:35,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:35,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:35,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:43:35,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 274 transitions, 3835 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:35,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:35,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:43:35,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:36,956 INFO L124 PetriNetUnfolderBase]: 5417/8623 cut-off events. [2024-06-28 01:43:36,957 INFO L125 PetriNetUnfolderBase]: For 182530/182550 co-relation queries the response was YES. [2024-06-28 01:43:37,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50704 conditions, 8623 events. 5417/8623 cut-off events. For 182530/182550 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 54561 event pairs, 1349 based on Foata normal form. 21/8428 useless extension candidates. Maximal degree in co-relation 50615. Up to 5995 conditions per place. [2024-06-28 01:43:37,045 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 208 selfloop transitions, 105 changer transitions 0/321 dead transitions. [2024-06-28 01:43:37,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 321 transitions, 4627 flow [2024-06-28 01:43:37,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:37,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:37,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 01:43:37,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163043478260869 [2024-06-28 01:43:37,046 INFO L175 Difference]: Start difference. First operand has 188 places, 274 transitions, 3835 flow. Second operand 8 states and 190 transitions. [2024-06-28 01:43:37,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 321 transitions, 4627 flow [2024-06-28 01:43:37,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 321 transitions, 4304 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 01:43:37,365 INFO L231 Difference]: Finished difference. Result has 187 places, 275 transitions, 3713 flow [2024-06-28 01:43:37,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3452, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3713, PETRI_PLACES=187, PETRI_TRANSITIONS=275} [2024-06-28 01:43:37,366 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 135 predicate places. [2024-06-28 01:43:37,366 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 275 transitions, 3713 flow [2024-06-28 01:43:37,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:37,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:37,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:37,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:43:37,367 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:37,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:37,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1775276145, now seen corresponding path program 3 times [2024-06-28 01:43:37,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:37,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585222225] [2024-06-28 01:43:37,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:37,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:37,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:37,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:37,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585222225] [2024-06-28 01:43:37,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585222225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:37,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:37,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:37,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740606706] [2024-06-28 01:43:37,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:37,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:37,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:37,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:37,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:38,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:43:38,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 275 transitions, 3713 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 01:43:38,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:38,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:43:38,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:39,209 INFO L124 PetriNetUnfolderBase]: 5460/8668 cut-off events. [2024-06-28 01:43:39,209 INFO L125 PetriNetUnfolderBase]: For 184115/184135 co-relation queries the response was YES. [2024-06-28 01:43:39,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50282 conditions, 8668 events. 5460/8668 cut-off events. For 184115/184135 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 54628 event pairs, 1715 based on Foata normal form. 11/8468 useless extension candidates. Maximal degree in co-relation 50193. Up to 7463 conditions per place. [2024-06-28 01:43:39,286 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 250 selfloop transitions, 58 changer transitions 0/316 dead transitions. [2024-06-28 01:43:39,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 316 transitions, 4781 flow [2024-06-28 01:43:39,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:39,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:39,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 01:43:39,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937888198757764 [2024-06-28 01:43:39,287 INFO L175 Difference]: Start difference. First operand has 187 places, 275 transitions, 3713 flow. Second operand 7 states and 159 transitions. [2024-06-28 01:43:39,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 316 transitions, 4781 flow [2024-06-28 01:43:39,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 316 transitions, 4542 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:39,620 INFO L231 Difference]: Finished difference. Result has 190 places, 288 transitions, 3802 flow [2024-06-28 01:43:39,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3474, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3802, PETRI_PLACES=190, PETRI_TRANSITIONS=288} [2024-06-28 01:43:39,621 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 138 predicate places. [2024-06-28 01:43:39,622 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 288 transitions, 3802 flow [2024-06-28 01:43:39,622 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 01:43:39,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:39,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:39,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:43:39,622 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 01:43:39,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:39,623 INFO L85 PathProgramCache]: Analyzing trace with hash 795996034, now seen corresponding path program 2 times [2024-06-28 01:43:39,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:39,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803117276] [2024-06-28 01:43:39,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:39,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:40,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:40,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:40,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803117276] [2024-06-28 01:43:40,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803117276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:40,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:40,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:40,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263494626] [2024-06-28 01:43:40,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:40,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:40,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:40,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:40,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:40,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:43:40,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 288 transitions, 3802 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 01:43:40,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:40,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:43:40,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:41,520 INFO L124 PetriNetUnfolderBase]: 5488/8733 cut-off events. [2024-06-28 01:43:41,521 INFO L125 PetriNetUnfolderBase]: For 192868/192904 co-relation queries the response was YES. [2024-06-28 01:43:41,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51554 conditions, 8733 events. 5488/8733 cut-off events. For 192868/192904 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 55210 event pairs, 1711 based on Foata normal form. 29/8545 useless extension candidates. Maximal degree in co-relation 51462. Up to 7829 conditions per place. [2024-06-28 01:43:41,603 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 286 selfloop transitions, 30 changer transitions 0/324 dead transitions. [2024-06-28 01:43:41,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 324 transitions, 4798 flow [2024-06-28 01:43:41,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:41,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:41,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-28 01:43:41,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4751552795031056 [2024-06-28 01:43:41,604 INFO L175 Difference]: Start difference. First operand has 190 places, 288 transitions, 3802 flow. Second operand 7 states and 153 transitions. [2024-06-28 01:43:41,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 324 transitions, 4798 flow [2024-06-28 01:43:42,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 324 transitions, 4694 flow, removed 36 selfloop flow, removed 2 redundant places. [2024-06-28 01:43:42,007 INFO L231 Difference]: Finished difference. Result has 195 places, 294 transitions, 3890 flow [2024-06-28 01:43:42,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3698, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3890, PETRI_PLACES=195, PETRI_TRANSITIONS=294} [2024-06-28 01:43:42,008 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 143 predicate places. [2024-06-28 01:43:42,008 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 294 transitions, 3890 flow [2024-06-28 01:43:42,009 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 01:43:42,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:42,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:42,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:43:42,009 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:42,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:42,010 INFO L85 PathProgramCache]: Analyzing trace with hash 796441504, now seen corresponding path program 3 times [2024-06-28 01:43:42,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:42,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007286447] [2024-06-28 01:43:42,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:42,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:42,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:42,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:42,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007286447] [2024-06-28 01:43:42,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007286447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:42,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:42,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:42,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049238141] [2024-06-28 01:43:42,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:42,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:42,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:42,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:42,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:42,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:43:42,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 294 transitions, 3890 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 01:43:42,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:42,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:43:42,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:44,039 INFO L124 PetriNetUnfolderBase]: 5485/8723 cut-off events. [2024-06-28 01:43:44,039 INFO L125 PetriNetUnfolderBase]: For 196356/196358 co-relation queries the response was YES. [2024-06-28 01:43:44,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51178 conditions, 8723 events. 5485/8723 cut-off events. For 196356/196358 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 55051 event pairs, 1734 based on Foata normal form. 1/8508 useless extension candidates. Maximal degree in co-relation 51084. Up to 7905 conditions per place. [2024-06-28 01:43:44,125 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 296 selfloop transitions, 16 changer transitions 0/320 dead transitions. [2024-06-28 01:43:44,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 320 transitions, 4658 flow [2024-06-28 01:43:44,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:44,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:44,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 148 transitions. [2024-06-28 01:43:44,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45962732919254656 [2024-06-28 01:43:44,127 INFO L175 Difference]: Start difference. First operand has 195 places, 294 transitions, 3890 flow. Second operand 7 states and 148 transitions. [2024-06-28 01:43:44,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 320 transitions, 4658 flow [2024-06-28 01:43:44,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 320 transitions, 4547 flow, removed 43 selfloop flow, removed 3 redundant places. [2024-06-28 01:43:44,575 INFO L231 Difference]: Finished difference. Result has 199 places, 294 transitions, 3817 flow [2024-06-28 01:43:44,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3779, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3817, PETRI_PLACES=199, PETRI_TRANSITIONS=294} [2024-06-28 01:43:44,576 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 147 predicate places. [2024-06-28 01:43:44,577 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 294 transitions, 3817 flow [2024-06-28 01:43:44,577 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 01:43:44,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:44,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:44,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:43:44,577 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:44,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:44,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1953266427, now seen corresponding path program 1 times [2024-06-28 01:43:44,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:44,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241905219] [2024-06-28 01:43:44,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:44,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:45,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:45,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:45,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241905219] [2024-06-28 01:43:45,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241905219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:45,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:45,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:45,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361804463] [2024-06-28 01:43:45,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:45,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:45,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:45,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:45,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:45,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:43:45,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 294 transitions, 3817 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:45,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:45,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:43:45,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:46,587 INFO L124 PetriNetUnfolderBase]: 5279/8501 cut-off events. [2024-06-28 01:43:46,587 INFO L125 PetriNetUnfolderBase]: For 206826/206931 co-relation queries the response was YES. [2024-06-28 01:43:46,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50473 conditions, 8501 events. 5279/8501 cut-off events. For 206826/206931 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 54697 event pairs, 1502 based on Foata normal form. 12/8248 useless extension candidates. Maximal degree in co-relation 50377. Up to 7455 conditions per place. [2024-06-28 01:43:46,672 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 282 selfloop transitions, 30 changer transitions 0/330 dead transitions. [2024-06-28 01:43:46,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 330 transitions, 4633 flow [2024-06-28 01:43:46,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:46,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:46,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-28 01:43:46,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:43:46,674 INFO L175 Difference]: Start difference. First operand has 199 places, 294 transitions, 3817 flow. Second operand 7 states and 161 transitions. [2024-06-28 01:43:46,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 330 transitions, 4633 flow [2024-06-28 01:43:47,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 330 transitions, 4591 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:47,080 INFO L231 Difference]: Finished difference. Result has 201 places, 303 transitions, 3957 flow [2024-06-28 01:43:47,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3775, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3957, PETRI_PLACES=201, PETRI_TRANSITIONS=303} [2024-06-28 01:43:47,081 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 149 predicate places. [2024-06-28 01:43:47,081 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 303 transitions, 3957 flow [2024-06-28 01:43:47,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:47,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:47,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:47,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:43:47,082 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:47,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:47,082 INFO L85 PathProgramCache]: Analyzing trace with hash 310991585, now seen corresponding path program 2 times [2024-06-28 01:43:47,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:47,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507353700] [2024-06-28 01:43:47,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:47,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:47,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:47,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:47,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507353700] [2024-06-28 01:43:47,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507353700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:47,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:47,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:47,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426594212] [2024-06-28 01:43:47,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:47,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:47,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:47,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:47,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:47,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:43:47,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 303 transitions, 3957 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:47,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:47,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:43:47,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:49,102 INFO L124 PetriNetUnfolderBase]: 5451/8712 cut-off events. [2024-06-28 01:43:49,102 INFO L125 PetriNetUnfolderBase]: For 227698/227801 co-relation queries the response was YES. [2024-06-28 01:43:49,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53943 conditions, 8712 events. 5451/8712 cut-off events. For 227698/227801 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 55692 event pairs, 1497 based on Foata normal form. 14/8469 useless extension candidates. Maximal degree in co-relation 53845. Up to 7560 conditions per place. [2024-06-28 01:43:49,195 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 289 selfloop transitions, 39 changer transitions 0/346 dead transitions. [2024-06-28 01:43:49,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 346 transitions, 4996 flow [2024-06-28 01:43:49,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:49,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:49,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 01:43:49,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5062111801242236 [2024-06-28 01:43:49,197 INFO L175 Difference]: Start difference. First operand has 201 places, 303 transitions, 3957 flow. Second operand 7 states and 163 transitions. [2024-06-28 01:43:49,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 346 transitions, 4996 flow [2024-06-28 01:43:49,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 346 transitions, 4907 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 01:43:49,571 INFO L231 Difference]: Finished difference. Result has 206 places, 317 transitions, 4158 flow [2024-06-28 01:43:49,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3868, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4158, PETRI_PLACES=206, PETRI_TRANSITIONS=317} [2024-06-28 01:43:49,572 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 154 predicate places. [2024-06-28 01:43:49,572 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 317 transitions, 4158 flow [2024-06-28 01:43:49,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:49,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:49,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:49,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:43:49,572 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:49,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:49,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1775091447, now seen corresponding path program 3 times [2024-06-28 01:43:49,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:49,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842599502] [2024-06-28 01:43:49,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:49,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:49,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:50,172 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 01:43:50,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:50,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842599502] [2024-06-28 01:43:50,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842599502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:50,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:50,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:50,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118529096] [2024-06-28 01:43:50,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:50,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:50,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:50,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:50,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:50,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:43:50,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 317 transitions, 4158 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:50,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:50,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:43:50,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:51,643 INFO L124 PetriNetUnfolderBase]: 5532/8818 cut-off events. [2024-06-28 01:43:51,643 INFO L125 PetriNetUnfolderBase]: For 239672/239788 co-relation queries the response was YES. [2024-06-28 01:43:51,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56268 conditions, 8818 events. 5532/8818 cut-off events. For 239672/239788 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 56225 event pairs, 1509 based on Foata normal form. 17/8570 useless extension candidates. Maximal degree in co-relation 56168. Up to 7516 conditions per place. [2024-06-28 01:43:51,735 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 296 selfloop transitions, 60 changer transitions 0/374 dead transitions. [2024-06-28 01:43:51,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 374 transitions, 5532 flow [2024-06-28 01:43:51,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:51,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:51,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-06-28 01:43:51,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48641304347826086 [2024-06-28 01:43:51,737 INFO L175 Difference]: Start difference. First operand has 206 places, 317 transitions, 4158 flow. Second operand 8 states and 179 transitions. [2024-06-28 01:43:51,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 374 transitions, 5532 flow [2024-06-28 01:43:52,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 374 transitions, 5437 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-06-28 01:43:52,170 INFO L231 Difference]: Finished difference. Result has 213 places, 342 transitions, 4588 flow [2024-06-28 01:43:52,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4063, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4588, PETRI_PLACES=213, PETRI_TRANSITIONS=342} [2024-06-28 01:43:52,171 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 161 predicate places. [2024-06-28 01:43:52,171 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 342 transitions, 4588 flow [2024-06-28 01:43:52,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:52,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:52,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:52,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:43:52,172 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:52,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:52,172 INFO L85 PathProgramCache]: Analyzing trace with hash 796457376, now seen corresponding path program 1 times [2024-06-28 01:43:52,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:52,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797839769] [2024-06-28 01:43:52,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:52,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:53,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:53,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:53,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797839769] [2024-06-28 01:43:53,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797839769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:53,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:53,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:53,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769285219] [2024-06-28 01:43:53,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:53,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:53,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:53,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:53,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:53,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:43:53,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 342 transitions, 4588 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:53,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:53,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:43:53,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:54,584 INFO L124 PetriNetUnfolderBase]: 5774/9094 cut-off events. [2024-06-28 01:43:54,584 INFO L125 PetriNetUnfolderBase]: For 244195/244197 co-relation queries the response was YES. [2024-06-28 01:43:54,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58974 conditions, 9094 events. 5774/9094 cut-off events. For 244195/244197 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 56901 event pairs, 1667 based on Foata normal form. 2/8883 useless extension candidates. Maximal degree in co-relation 58870. Up to 8270 conditions per place. [2024-06-28 01:43:54,682 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 341 selfloop transitions, 27 changer transitions 0/376 dead transitions. [2024-06-28 01:43:54,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 376 transitions, 5574 flow [2024-06-28 01:43:54,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:54,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:54,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-06-28 01:43:54,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45652173913043476 [2024-06-28 01:43:54,683 INFO L175 Difference]: Start difference. First operand has 213 places, 342 transitions, 4588 flow. Second operand 8 states and 168 transitions. [2024-06-28 01:43:54,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 376 transitions, 5574 flow [2024-06-28 01:43:55,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 376 transitions, 5450 flow, removed 61 selfloop flow, removed 1 redundant places. [2024-06-28 01:43:55,277 INFO L231 Difference]: Finished difference. Result has 220 places, 345 transitions, 4621 flow [2024-06-28 01:43:55,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4480, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4621, PETRI_PLACES=220, PETRI_TRANSITIONS=345} [2024-06-28 01:43:55,277 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 168 predicate places. [2024-06-28 01:43:55,278 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 345 transitions, 4621 flow [2024-06-28 01:43:55,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:55,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:55,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:55,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:43:55,278 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:55,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:55,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1595808722, now seen corresponding path program 1 times [2024-06-28 01:43:55,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:55,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542577395] [2024-06-28 01:43:55,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:55,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:55,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:55,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:55,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542577395] [2024-06-28 01:43:55,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542577395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:55,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:55,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:55,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779893022] [2024-06-28 01:43:55,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:55,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:55,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:55,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:55,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:55,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:43:55,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 345 transitions, 4621 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:55,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:55,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:43:55,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:57,500 INFO L124 PetriNetUnfolderBase]: 5814/9176 cut-off events. [2024-06-28 01:43:57,500 INFO L125 PetriNetUnfolderBase]: For 248775/248797 co-relation queries the response was YES. [2024-06-28 01:43:57,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58717 conditions, 9176 events. 5814/9176 cut-off events. For 248775/248797 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 57643 event pairs, 1681 based on Foata normal form. 24/8982 useless extension candidates. Maximal degree in co-relation 58610. Up to 8136 conditions per place. [2024-06-28 01:43:57,596 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 332 selfloop transitions, 48 changer transitions 0/388 dead transitions. [2024-06-28 01:43:57,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 388 transitions, 5647 flow [2024-06-28 01:43:57,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:57,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:57,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-28 01:43:57,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945652173913043 [2024-06-28 01:43:57,597 INFO L175 Difference]: Start difference. First operand has 220 places, 345 transitions, 4621 flow. Second operand 8 states and 182 transitions. [2024-06-28 01:43:57,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 388 transitions, 5647 flow [2024-06-28 01:43:58,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 388 transitions, 5530 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:58,343 INFO L231 Difference]: Finished difference. Result has 222 places, 349 transitions, 4695 flow [2024-06-28 01:43:58,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4504, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4695, PETRI_PLACES=222, PETRI_TRANSITIONS=349} [2024-06-28 01:43:58,344 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 170 predicate places. [2024-06-28 01:43:58,344 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 349 transitions, 4695 flow [2024-06-28 01:43:58,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:58,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:58,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:58,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:43:58,345 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:58,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:58,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1592265546, now seen corresponding path program 1 times [2024-06-28 01:43:58,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:58,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721850918] [2024-06-28 01:43:58,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:58,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:58,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:58,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:58,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721850918] [2024-06-28 01:43:58,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721850918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:58,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:58,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:58,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307020204] [2024-06-28 01:43:58,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:58,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:58,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:58,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:58,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:58,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:43:58,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 349 transitions, 4695 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 01:43:58,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:58,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:43:58,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:00,648 INFO L124 PetriNetUnfolderBase]: 5854/9231 cut-off events. [2024-06-28 01:44:00,648 INFO L125 PetriNetUnfolderBase]: For 261006/261016 co-relation queries the response was YES. [2024-06-28 01:44:00,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60171 conditions, 9231 events. 5854/9231 cut-off events. For 261006/261016 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 58010 event pairs, 1686 based on Foata normal form. 10/9019 useless extension candidates. Maximal degree in co-relation 60063. Up to 8208 conditions per place. [2024-06-28 01:44:00,730 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 331 selfloop transitions, 45 changer transitions 0/384 dead transitions. [2024-06-28 01:44:00,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 384 transitions, 5647 flow [2024-06-28 01:44:00,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:44:00,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:44:00,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-28 01:44:00,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4906832298136646 [2024-06-28 01:44:00,731 INFO L175 Difference]: Start difference. First operand has 222 places, 349 transitions, 4695 flow. Second operand 7 states and 158 transitions. [2024-06-28 01:44:00,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 384 transitions, 5647 flow [2024-06-28 01:44:01,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 384 transitions, 5490 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:01,232 INFO L231 Difference]: Finished difference. Result has 223 places, 354 transitions, 4719 flow [2024-06-28 01:44:01,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4540, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4719, PETRI_PLACES=223, PETRI_TRANSITIONS=354} [2024-06-28 01:44:01,232 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 171 predicate places. [2024-06-28 01:44:01,232 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 354 transitions, 4719 flow [2024-06-28 01:44:01,233 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 01:44:01,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:01,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:01,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:44:01,233 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:01,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:01,233 INFO L85 PathProgramCache]: Analyzing trace with hash -628584556, now seen corresponding path program 2 times [2024-06-28 01:44:01,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:01,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439640738] [2024-06-28 01:44:01,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:01,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:01,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:01,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:01,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439640738] [2024-06-28 01:44:01,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439640738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:01,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:01,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:01,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205947315] [2024-06-28 01:44:01,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:01,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:01,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:01,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:01,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:01,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:44:01,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 354 transitions, 4719 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 01:44:01,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:01,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:44:01,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:03,458 INFO L124 PetriNetUnfolderBase]: 5871/9254 cut-off events. [2024-06-28 01:44:03,458 INFO L125 PetriNetUnfolderBase]: For 266659/266669 co-relation queries the response was YES. [2024-06-28 01:44:03,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60255 conditions, 9254 events. 5871/9254 cut-off events. For 266659/266669 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 58133 event pairs, 1687 based on Foata normal form. 10/9043 useless extension candidates. Maximal degree in co-relation 60146. Up to 8100 conditions per place. [2024-06-28 01:44:03,553 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 324 selfloop transitions, 54 changer transitions 0/386 dead transitions. [2024-06-28 01:44:03,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 386 transitions, 5775 flow [2024-06-28 01:44:03,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:44:03,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:44:03,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 01:44:03,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937888198757764 [2024-06-28 01:44:03,555 INFO L175 Difference]: Start difference. First operand has 223 places, 354 transitions, 4719 flow. Second operand 7 states and 159 transitions. [2024-06-28 01:44:03,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 386 transitions, 5775 flow [2024-06-28 01:44:04,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 386 transitions, 5704 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 01:44:04,032 INFO L231 Difference]: Finished difference. Result has 227 places, 357 transitions, 4825 flow [2024-06-28 01:44:04,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4648, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4825, PETRI_PLACES=227, PETRI_TRANSITIONS=357} [2024-06-28 01:44:04,033 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 175 predicate places. [2024-06-28 01:44:04,033 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 357 transitions, 4825 flow [2024-06-28 01:44:04,033 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 01:44:04,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:04,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:04,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:44:04,034 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:04,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:04,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1586513372, now seen corresponding path program 2 times [2024-06-28 01:44:04,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:04,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56403061] [2024-06-28 01:44:04,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:04,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:04,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:04,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:04,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56403061] [2024-06-28 01:44:04,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56403061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:04,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:04,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:04,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865988093] [2024-06-28 01:44:04,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:04,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:04,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:04,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:04,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:04,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:44:04,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 357 transitions, 4825 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:04,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:04,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:44:04,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:06,299 INFO L124 PetriNetUnfolderBase]: 5982/9420 cut-off events. [2024-06-28 01:44:06,299 INFO L125 PetriNetUnfolderBase]: For 283534/283544 co-relation queries the response was YES. [2024-06-28 01:44:06,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62130 conditions, 9420 events. 5982/9420 cut-off events. For 283534/283544 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 59355 event pairs, 1684 based on Foata normal form. 10/9210 useless extension candidates. Maximal degree in co-relation 62020. Up to 8083 conditions per place. [2024-06-28 01:44:06,402 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 331 selfloop transitions, 63 changer transitions 0/402 dead transitions. [2024-06-28 01:44:06,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 402 transitions, 6207 flow [2024-06-28 01:44:06,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:06,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:06,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-28 01:44:06,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945652173913043 [2024-06-28 01:44:06,403 INFO L175 Difference]: Start difference. First operand has 227 places, 357 transitions, 4825 flow. Second operand 8 states and 182 transitions. [2024-06-28 01:44:06,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 402 transitions, 6207 flow [2024-06-28 01:44:06,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 402 transitions, 6097 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 01:44:06,946 INFO L231 Difference]: Finished difference. Result has 232 places, 365 transitions, 5043 flow [2024-06-28 01:44:06,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4715, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5043, PETRI_PLACES=232, PETRI_TRANSITIONS=365} [2024-06-28 01:44:06,946 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 180 predicate places. [2024-06-28 01:44:06,947 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 365 transitions, 5043 flow [2024-06-28 01:44:06,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:06,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:06,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:06,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:44:06,947 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:06,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:06,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1619790642, now seen corresponding path program 1 times [2024-06-28 01:44:06,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:06,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72577621] [2024-06-28 01:44:06,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:06,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:07,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:07,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:07,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72577621] [2024-06-28 01:44:07,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72577621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:07,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:07,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:07,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264542942] [2024-06-28 01:44:07,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:07,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:07,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:07,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:07,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:07,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:44:07,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 365 transitions, 5043 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:07,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:07,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:44:07,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:09,647 INFO L124 PetriNetUnfolderBase]: 6003/9469 cut-off events. [2024-06-28 01:44:09,647 INFO L125 PetriNetUnfolderBase]: For 300320/300334 co-relation queries the response was YES. [2024-06-28 01:44:09,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63958 conditions, 9469 events. 6003/9469 cut-off events. For 300320/300334 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 59873 event pairs, 1681 based on Foata normal form. 15/9256 useless extension candidates. Maximal degree in co-relation 63846. Up to 8574 conditions per place. [2024-06-28 01:44:09,760 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 367 selfloop transitions, 39 changer transitions 0/414 dead transitions. [2024-06-28 01:44:09,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 414 transitions, 6355 flow [2024-06-28 01:44:09,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:09,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:09,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 171 transitions. [2024-06-28 01:44:09,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46467391304347827 [2024-06-28 01:44:09,761 INFO L175 Difference]: Start difference. First operand has 232 places, 365 transitions, 5043 flow. Second operand 8 states and 171 transitions. [2024-06-28 01:44:09,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 414 transitions, 6355 flow [2024-06-28 01:44:10,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 414 transitions, 6199 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-28 01:44:10,476 INFO L231 Difference]: Finished difference. Result has 238 places, 383 transitions, 5385 flow [2024-06-28 01:44:10,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4888, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5385, PETRI_PLACES=238, PETRI_TRANSITIONS=383} [2024-06-28 01:44:10,477 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 186 predicate places. [2024-06-28 01:44:10,477 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 383 transitions, 5385 flow [2024-06-28 01:44:10,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:10,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:10,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:10,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:44:10,477 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:10,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:10,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1619803166, now seen corresponding path program 3 times [2024-06-28 01:44:10,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:10,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031116076] [2024-06-28 01:44:10,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:10,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:11,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:11,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:11,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031116076] [2024-06-28 01:44:11,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031116076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:11,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:11,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:11,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947285232] [2024-06-28 01:44:11,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:11,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:11,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:11,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:11,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:11,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:44:11,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 383 transitions, 5385 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:11,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:11,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:44:11,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:12,969 INFO L124 PetriNetUnfolderBase]: 6022/9485 cut-off events. [2024-06-28 01:44:12,969 INFO L125 PetriNetUnfolderBase]: For 313611/313621 co-relation queries the response was YES. [2024-06-28 01:44:13,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65129 conditions, 9485 events. 6022/9485 cut-off events. For 313611/313621 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 59902 event pairs, 1684 based on Foata normal form. 10/9272 useless extension candidates. Maximal degree in co-relation 65013. Up to 8133 conditions per place. [2024-06-28 01:44:13,069 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 346 selfloop transitions, 70 changer transitions 0/424 dead transitions. [2024-06-28 01:44:13,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 424 transitions, 6660 flow [2024-06-28 01:44:13,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:13,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:13,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-28 01:44:13,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945652173913043 [2024-06-28 01:44:13,070 INFO L175 Difference]: Start difference. First operand has 238 places, 383 transitions, 5385 flow. Second operand 8 states and 182 transitions. [2024-06-28 01:44:13,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 424 transitions, 6660 flow [2024-06-28 01:44:13,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 424 transitions, 6188 flow, removed 150 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:13,890 INFO L231 Difference]: Finished difference. Result has 241 places, 387 transitions, 5193 flow [2024-06-28 01:44:13,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4957, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5193, PETRI_PLACES=241, PETRI_TRANSITIONS=387} [2024-06-28 01:44:13,891 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 189 predicate places. [2024-06-28 01:44:13,891 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 387 transitions, 5193 flow [2024-06-28 01:44:13,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:13,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:13,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:13,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:44:13,892 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:13,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:13,892 INFO L85 PathProgramCache]: Analyzing trace with hash 124279600, now seen corresponding path program 3 times [2024-06-28 01:44:13,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:13,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272413212] [2024-06-28 01:44:13,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:13,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:14,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:14,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:14,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272413212] [2024-06-28 01:44:14,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272413212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:14,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:14,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:14,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105054410] [2024-06-28 01:44:14,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:14,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:14,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:14,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:14,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:14,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:44:14,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 387 transitions, 5193 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 01:44:14,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:14,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:44:14,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:16,457 INFO L124 PetriNetUnfolderBase]: 6104/9612 cut-off events. [2024-06-28 01:44:16,457 INFO L125 PetriNetUnfolderBase]: For 322350/322352 co-relation queries the response was YES. [2024-06-28 01:44:16,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66898 conditions, 9612 events. 6104/9612 cut-off events. For 322350/322352 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 60375 event pairs, 1707 based on Foata normal form. 3/9382 useless extension candidates. Maximal degree in co-relation 66781. Up to 8536 conditions per place. [2024-06-28 01:44:16,558 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 364 selfloop transitions, 68 changer transitions 0/440 dead transitions. [2024-06-28 01:44:16,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 440 transitions, 6715 flow [2024-06-28 01:44:16,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:16,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:16,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 188 transitions. [2024-06-28 01:44:16,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45410628019323673 [2024-06-28 01:44:16,560 INFO L175 Difference]: Start difference. First operand has 241 places, 387 transitions, 5193 flow. Second operand 9 states and 188 transitions. [2024-06-28 01:44:16,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 440 transitions, 6715 flow [2024-06-28 01:44:17,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 440 transitions, 6516 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:17,399 INFO L231 Difference]: Finished difference. Result has 247 places, 413 transitions, 5727 flow [2024-06-28 01:44:17,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5023, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5727, PETRI_PLACES=247, PETRI_TRANSITIONS=413} [2024-06-28 01:44:17,399 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 195 predicate places. [2024-06-28 01:44:17,400 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 413 transitions, 5727 flow [2024-06-28 01:44:17,400 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 01:44:17,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:17,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:17,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:44:17,400 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:17,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:17,400 INFO L85 PathProgramCache]: Analyzing trace with hash -429433426, now seen corresponding path program 4 times [2024-06-28 01:44:17,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:17,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264672565] [2024-06-28 01:44:17,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:17,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:17,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:17,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:17,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264672565] [2024-06-28 01:44:17,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264672565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:17,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:17,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:17,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827298891] [2024-06-28 01:44:17,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:17,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:17,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:17,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:17,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:18,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:44:18,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 413 transitions, 5727 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 01:44:18,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:18,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:44:18,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:19,879 INFO L124 PetriNetUnfolderBase]: 6097/9600 cut-off events. [2024-06-28 01:44:19,879 INFO L125 PetriNetUnfolderBase]: For 327316/327332 co-relation queries the response was YES. [2024-06-28 01:44:19,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67166 conditions, 9600 events. 6097/9600 cut-off events. For 327316/327332 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 60526 event pairs, 1710 based on Foata normal form. 5/9371 useless extension candidates. Maximal degree in co-relation 67046. Up to 8512 conditions per place. [2024-06-28 01:44:19,966 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 366 selfloop transitions, 66 changer transitions 0/440 dead transitions. [2024-06-28 01:44:19,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 440 transitions, 6731 flow [2024-06-28 01:44:19,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:44:19,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:44:19,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-28 01:44:19,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4813664596273292 [2024-06-28 01:44:19,974 INFO L175 Difference]: Start difference. First operand has 247 places, 413 transitions, 5727 flow. Second operand 7 states and 155 transitions. [2024-06-28 01:44:19,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 440 transitions, 6731 flow [2024-06-28 01:44:20,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 440 transitions, 6631 flow, removed 26 selfloop flow, removed 2 redundant places. [2024-06-28 01:44:20,884 INFO L231 Difference]: Finished difference. Result has 252 places, 413 transitions, 5771 flow [2024-06-28 01:44:20,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5627, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5771, PETRI_PLACES=252, PETRI_TRANSITIONS=413} [2024-06-28 01:44:20,884 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 200 predicate places. [2024-06-28 01:44:20,885 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 413 transitions, 5771 flow [2024-06-28 01:44:20,885 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 01:44:20,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:20,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:20,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:44:20,885 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:20,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:20,886 INFO L85 PathProgramCache]: Analyzing trace with hash -417975826, now seen corresponding path program 5 times [2024-06-28 01:44:20,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:20,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108847363] [2024-06-28 01:44:20,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:20,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:21,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:21,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:21,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108847363] [2024-06-28 01:44:21,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108847363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:21,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:21,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:44:21,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105283196] [2024-06-28 01:44:21,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:21,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:44:21,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:21,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:44:21,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:44:21,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:44:21,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 413 transitions, 5771 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 01:44:21,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:21,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:44:21,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:23,207 INFO L124 PetriNetUnfolderBase]: 6117/9630 cut-off events. [2024-06-28 01:44:23,208 INFO L125 PetriNetUnfolderBase]: For 336813/336829 co-relation queries the response was YES. [2024-06-28 01:44:23,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67529 conditions, 9630 events. 6117/9630 cut-off events. For 336813/336829 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 60711 event pairs, 1702 based on Foata normal form. 5/9400 useless extension candidates. Maximal degree in co-relation 67407. Up to 8468 conditions per place. [2024-06-28 01:44:23,566 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 360 selfloop transitions, 76 changer transitions 0/444 dead transitions. [2024-06-28 01:44:23,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 444 transitions, 6878 flow [2024-06-28 01:44:23,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:44:23,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:44:23,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-28 01:44:23,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484472049689441 [2024-06-28 01:44:23,567 INFO L175 Difference]: Start difference. First operand has 252 places, 413 transitions, 5771 flow. Second operand 7 states and 156 transitions. [2024-06-28 01:44:23,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 444 transitions, 6878 flow [2024-06-28 01:44:24,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 444 transitions, 6610 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 01:44:24,831 INFO L231 Difference]: Finished difference. Result has 252 places, 417 transitions, 5754 flow [2024-06-28 01:44:24,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5503, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5754, PETRI_PLACES=252, PETRI_TRANSITIONS=417} [2024-06-28 01:44:24,831 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 200 predicate places. [2024-06-28 01:44:24,831 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 417 transitions, 5754 flow [2024-06-28 01:44:24,832 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 01:44:24,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:24,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:24,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:44:24,832 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:24,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:24,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1088220210, now seen corresponding path program 6 times [2024-06-28 01:44:24,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:24,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205543387] [2024-06-28 01:44:24,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:24,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:25,409 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 01:44:25,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:25,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205543387] [2024-06-28 01:44:25,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205543387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:25,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:25,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:44:25,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914420413] [2024-06-28 01:44:25,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:25,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:44:25,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:25,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:44:25,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:44:25,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:44:25,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 417 transitions, 5754 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 01:44:25,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:25,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:44:25,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:27,453 INFO L124 PetriNetUnfolderBase]: 6137/9637 cut-off events. [2024-06-28 01:44:27,453 INFO L125 PetriNetUnfolderBase]: For 336444/336468 co-relation queries the response was YES. [2024-06-28 01:44:27,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67725 conditions, 9637 events. 6137/9637 cut-off events. For 336444/336468 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 60651 event pairs, 1655 based on Foata normal form. 13/9426 useless extension candidates. Maximal degree in co-relation 67601. Up to 8255 conditions per place. [2024-06-28 01:44:27,569 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 348 selfloop transitions, 95 changer transitions 0/451 dead transitions. [2024-06-28 01:44:27,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 451 transitions, 7047 flow [2024-06-28 01:44:27,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:44:27,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:44:27,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-28 01:44:27,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48757763975155277 [2024-06-28 01:44:27,571 INFO L175 Difference]: Start difference. First operand has 252 places, 417 transitions, 5754 flow. Second operand 7 states and 157 transitions. [2024-06-28 01:44:27,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 451 transitions, 7047 flow [2024-06-28 01:44:28,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 451 transitions, 6895 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 01:44:28,523 INFO L231 Difference]: Finished difference. Result has 255 places, 420 transitions, 5851 flow [2024-06-28 01:44:28,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5602, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5851, PETRI_PLACES=255, PETRI_TRANSITIONS=420} [2024-06-28 01:44:28,524 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 203 predicate places. [2024-06-28 01:44:28,524 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 420 transitions, 5851 flow [2024-06-28 01:44:28,524 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 01:44:28,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:28,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:28,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:44:28,525 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:28,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:28,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1093934130, now seen corresponding path program 7 times [2024-06-28 01:44:28,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:28,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915152917] [2024-06-28 01:44:28,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:28,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:29,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:29,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:29,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915152917] [2024-06-28 01:44:29,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915152917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:29,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:29,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:29,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147198856] [2024-06-28 01:44:29,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:29,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:29,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:29,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:29,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:29,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:44:29,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 420 transitions, 5851 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 01:44:29,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:29,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:44:29,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:31,015 INFO L124 PetriNetUnfolderBase]: 6129/9645 cut-off events. [2024-06-28 01:44:31,015 INFO L125 PetriNetUnfolderBase]: For 342626/342650 co-relation queries the response was YES. [2024-06-28 01:44:31,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67866 conditions, 9645 events. 6129/9645 cut-off events. For 342626/342650 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 60866 event pairs, 1661 based on Foata normal form. 14/9427 useless extension candidates. Maximal degree in co-relation 67741. Up to 8247 conditions per place. [2024-06-28 01:44:31,142 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 351 selfloop transitions, 91 changer transitions 0/450 dead transitions. [2024-06-28 01:44:31,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 450 transitions, 6980 flow [2024-06-28 01:44:31,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:44:31,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:44:31,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-28 01:44:31,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48757763975155277 [2024-06-28 01:44:31,145 INFO L175 Difference]: Start difference. First operand has 255 places, 420 transitions, 5851 flow. Second operand 7 states and 157 transitions. [2024-06-28 01:44:31,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 450 transitions, 6980 flow [2024-06-28 01:44:32,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 450 transitions, 6702 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:32,122 INFO L231 Difference]: Finished difference. Result has 256 places, 420 transitions, 5763 flow [2024-06-28 01:44:32,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5573, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5763, PETRI_PLACES=256, PETRI_TRANSITIONS=420} [2024-06-28 01:44:32,122 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 204 predicate places. [2024-06-28 01:44:32,122 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 420 transitions, 5763 flow [2024-06-28 01:44:32,123 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 01:44:32,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:32,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:32,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:44:32,123 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:32,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:32,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1093937726, now seen corresponding path program 4 times [2024-06-28 01:44:32,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:32,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162986019] [2024-06-28 01:44:32,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:32,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:32,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:32,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:32,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162986019] [2024-06-28 01:44:32,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162986019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:32,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:32,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:32,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766095176] [2024-06-28 01:44:32,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:32,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:32,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:32,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:32,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:32,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:44:32,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 420 transitions, 5763 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:32,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:32,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:44:32,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:34,466 INFO L124 PetriNetUnfolderBase]: 6216/9782 cut-off events. [2024-06-28 01:44:34,466 INFO L125 PetriNetUnfolderBase]: For 357985/358009 co-relation queries the response was YES. [2024-06-28 01:44:34,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68937 conditions, 9782 events. 6216/9782 cut-off events. For 357985/358009 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 61994 event pairs, 1695 based on Foata normal form. 14/9562 useless extension candidates. Maximal degree in co-relation 68813. Up to 7970 conditions per place. [2024-06-28 01:44:34,588 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 343 selfloop transitions, 121 changer transitions 0/472 dead transitions. [2024-06-28 01:44:34,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 472 transitions, 7631 flow [2024-06-28 01:44:34,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:34,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:34,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-28 01:44:34,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:44:34,589 INFO L175 Difference]: Start difference. First operand has 256 places, 420 transitions, 5763 flow. Second operand 8 states and 184 transitions. [2024-06-28 01:44:34,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 472 transitions, 7631 flow [2024-06-28 01:44:35,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 472 transitions, 7436 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:35,681 INFO L231 Difference]: Finished difference. Result has 259 places, 432 transitions, 6154 flow [2024-06-28 01:44:35,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5568, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6154, PETRI_PLACES=259, PETRI_TRANSITIONS=432} [2024-06-28 01:44:35,682 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 207 predicate places. [2024-06-28 01:44:35,682 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 432 transitions, 6154 flow [2024-06-28 01:44:35,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:35,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:35,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:35,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:44:35,683 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:35,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:35,683 INFO L85 PathProgramCache]: Analyzing trace with hash 801027932, now seen corresponding path program 5 times [2024-06-28 01:44:35,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:35,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33684416] [2024-06-28 01:44:35,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:35,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:36,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:36,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:36,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33684416] [2024-06-28 01:44:36,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33684416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:36,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:36,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:36,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879041819] [2024-06-28 01:44:36,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:36,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:36,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:36,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:36,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:36,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:44:36,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 432 transitions, 6154 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:36,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:36,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:44:36,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:38,345 INFO L124 PetriNetUnfolderBase]: 6304/9917 cut-off events. [2024-06-28 01:44:38,346 INFO L125 PetriNetUnfolderBase]: For 385414/385435 co-relation queries the response was YES. [2024-06-28 01:44:38,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72171 conditions, 9917 events. 6304/9917 cut-off events. For 385414/385435 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 62929 event pairs, 1696 based on Foata normal form. 13/9693 useless extension candidates. Maximal degree in co-relation 72045. Up to 8048 conditions per place. [2024-06-28 01:44:38,448 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 348 selfloop transitions, 124 changer transitions 0/480 dead transitions. [2024-06-28 01:44:38,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 480 transitions, 7963 flow [2024-06-28 01:44:38,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:38,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:38,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-28 01:44:38,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:44:38,449 INFO L175 Difference]: Start difference. First operand has 259 places, 432 transitions, 6154 flow. Second operand 8 states and 184 transitions. [2024-06-28 01:44:38,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 480 transitions, 7963 flow [2024-06-28 01:44:39,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 480 transitions, 7672 flow, removed 91 selfloop flow, removed 3 redundant places. [2024-06-28 01:44:39,510 INFO L231 Difference]: Finished difference. Result has 265 places, 440 transitions, 6353 flow [2024-06-28 01:44:39,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5911, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6353, PETRI_PLACES=265, PETRI_TRANSITIONS=440} [2024-06-28 01:44:39,511 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 213 predicate places. [2024-06-28 01:44:39,511 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 440 transitions, 6353 flow [2024-06-28 01:44:39,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:39,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:39,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:39,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:44:39,512 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:39,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:39,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1093925202, now seen corresponding path program 2 times [2024-06-28 01:44:39,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:39,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102368643] [2024-06-28 01:44:39,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:39,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:39,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:40,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:40,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:40,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102368643] [2024-06-28 01:44:40,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102368643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:40,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:40,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:40,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138334526] [2024-06-28 01:44:40,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:40,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:40,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:40,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:40,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:40,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:44:40,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 440 transitions, 6353 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:40,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:40,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:44:40,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:42,291 INFO L124 PetriNetUnfolderBase]: 6322/9961 cut-off events. [2024-06-28 01:44:42,291 INFO L125 PetriNetUnfolderBase]: For 385208/385238 co-relation queries the response was YES. [2024-06-28 01:44:42,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72459 conditions, 9961 events. 6322/9961 cut-off events. For 385208/385238 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 63270 event pairs, 1684 based on Foata normal form. 25/9745 useless extension candidates. Maximal degree in co-relation 72330. Up to 8956 conditions per place. [2024-06-28 01:44:42,425 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 427 selfloop transitions, 61 changer transitions 0/496 dead transitions. [2024-06-28 01:44:42,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 496 transitions, 8072 flow [2024-06-28 01:44:42,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:42,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:42,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-28 01:44:42,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4592391304347826 [2024-06-28 01:44:42,426 INFO L175 Difference]: Start difference. First operand has 265 places, 440 transitions, 6353 flow. Second operand 8 states and 169 transitions. [2024-06-28 01:44:42,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 496 transitions, 8072 flow [2024-06-28 01:44:43,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 496 transitions, 7805 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-28 01:44:43,708 INFO L231 Difference]: Finished difference. Result has 272 places, 467 transitions, 6882 flow [2024-06-28 01:44:43,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6090, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6882, PETRI_PLACES=272, PETRI_TRANSITIONS=467} [2024-06-28 01:44:43,709 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 220 predicate places. [2024-06-28 01:44:43,709 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 467 transitions, 6882 flow [2024-06-28 01:44:43,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:43,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:43,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:43,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:44:43,710 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:43,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:43,710 INFO L85 PathProgramCache]: Analyzing trace with hash 801431986, now seen corresponding path program 3 times [2024-06-28 01:44:43,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:43,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52806875] [2024-06-28 01:44:43,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:43,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:44,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:44,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:44,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52806875] [2024-06-28 01:44:44,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52806875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:44,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:44,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:44,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194636102] [2024-06-28 01:44:44,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:44,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:44,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:44,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:44,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:44,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:44:44,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 467 transitions, 6882 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:44,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:44,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:44:44,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:46,447 INFO L124 PetriNetUnfolderBase]: 6337/9971 cut-off events. [2024-06-28 01:44:46,447 INFO L125 PetriNetUnfolderBase]: For 400349/400353 co-relation queries the response was YES. [2024-06-28 01:44:46,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73287 conditions, 9971 events. 6337/9971 cut-off events. For 400349/400353 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 63281 event pairs, 1783 based on Foata normal form. 2/9734 useless extension candidates. Maximal degree in co-relation 73154. Up to 9049 conditions per place. [2024-06-28 01:44:46,581 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 460 selfloop transitions, 35 changer transitions 0/503 dead transitions. [2024-06-28 01:44:46,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 503 transitions, 8320 flow [2024-06-28 01:44:46,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:46,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:46,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-28 01:44:46,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4483695652173913 [2024-06-28 01:44:46,583 INFO L175 Difference]: Start difference. First operand has 272 places, 467 transitions, 6882 flow. Second operand 8 states and 165 transitions. [2024-06-28 01:44:46,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 503 transitions, 8320 flow [2024-06-28 01:44:48,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 503 transitions, 7783 flow, removed 259 selfloop flow, removed 2 redundant places. [2024-06-28 01:44:48,009 INFO L231 Difference]: Finished difference. Result has 280 places, 479 transitions, 6783 flow [2024-06-28 01:44:48,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6471, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6783, PETRI_PLACES=280, PETRI_TRANSITIONS=479} [2024-06-28 01:44:48,010 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 228 predicate places. [2024-06-28 01:44:48,010 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 479 transitions, 6783 flow [2024-06-28 01:44:48,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:48,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:48,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:48,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:44:48,010 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:48,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:48,011 INFO L85 PathProgramCache]: Analyzing trace with hash 815313166, now seen corresponding path program 4 times [2024-06-28 01:44:48,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:48,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802031504] [2024-06-28 01:44:48,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:48,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:48,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:48,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:48,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802031504] [2024-06-28 01:44:48,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802031504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:48,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:48,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:48,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099153717] [2024-06-28 01:44:48,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:48,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:48,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:48,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:48,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:48,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:44:48,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 479 transitions, 6783 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:48,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:48,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:44:48,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:51,084 INFO L124 PetriNetUnfolderBase]: 6345/9988 cut-off events. [2024-06-28 01:44:51,085 INFO L125 PetriNetUnfolderBase]: For 412514/412518 co-relation queries the response was YES. [2024-06-28 01:44:51,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74214 conditions, 9988 events. 6345/9988 cut-off events. For 412514/412518 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 63468 event pairs, 1782 based on Foata normal form. 2/9749 useless extension candidates. Maximal degree in co-relation 74077. Up to 9029 conditions per place. [2024-06-28 01:44:51,205 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 475 selfloop transitions, 40 changer transitions 0/523 dead transitions. [2024-06-28 01:44:51,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 523 transitions, 8248 flow [2024-06-28 01:44:51,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:51,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:51,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 188 transitions. [2024-06-28 01:44:51,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45410628019323673 [2024-06-28 01:44:51,207 INFO L175 Difference]: Start difference. First operand has 280 places, 479 transitions, 6783 flow. Second operand 9 states and 188 transitions. [2024-06-28 01:44:51,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 523 transitions, 8248 flow [2024-06-28 01:44:52,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 523 transitions, 7904 flow, removed 134 selfloop flow, removed 4 redundant places. [2024-06-28 01:44:52,493 INFO L231 Difference]: Finished difference. Result has 285 places, 487 transitions, 6802 flow [2024-06-28 01:44:52,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6554, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6802, PETRI_PLACES=285, PETRI_TRANSITIONS=487} [2024-06-28 01:44:52,493 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 233 predicate places. [2024-06-28 01:44:52,494 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 487 transitions, 6802 flow [2024-06-28 01:44:52,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:52,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:52,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:52,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:44:52,494 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:52,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:52,495 INFO L85 PathProgramCache]: Analyzing trace with hash 814837502, now seen corresponding path program 6 times [2024-06-28 01:44:52,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:52,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867216473] [2024-06-28 01:44:52,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:52,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:53,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:53,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:53,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867216473] [2024-06-28 01:44:53,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867216473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:53,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:53,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:53,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448900539] [2024-06-28 01:44:53,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:53,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:53,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:53,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:53,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:53,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:44:53,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 487 transitions, 6802 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:53,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:53,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:44:53,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:55,203 INFO L124 PetriNetUnfolderBase]: 6341/9982 cut-off events. [2024-06-28 01:44:55,203 INFO L125 PetriNetUnfolderBase]: For 424027/424039 co-relation queries the response was YES. [2024-06-28 01:44:55,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74722 conditions, 9982 events. 6341/9982 cut-off events. For 424027/424039 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 63490 event pairs, 1753 based on Foata normal form. 11/9754 useless extension candidates. Maximal degree in co-relation 74584. Up to 8913 conditions per place. [2024-06-28 01:44:55,628 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 465 selfloop transitions, 54 changer transitions 0/527 dead transitions. [2024-06-28 01:44:55,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 527 transitions, 8274 flow [2024-06-28 01:44:55,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:55,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:55,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2024-06-28 01:44:55,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47554347826086957 [2024-06-28 01:44:55,630 INFO L175 Difference]: Start difference. First operand has 285 places, 487 transitions, 6802 flow. Second operand 8 states and 175 transitions. [2024-06-28 01:44:55,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 527 transitions, 8274 flow [2024-06-28 01:44:56,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 527 transitions, 8046 flow, removed 80 selfloop flow, removed 7 redundant places. [2024-06-28 01:44:56,857 INFO L231 Difference]: Finished difference. Result has 286 places, 487 transitions, 6691 flow [2024-06-28 01:44:56,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6574, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6691, PETRI_PLACES=286, PETRI_TRANSITIONS=487} [2024-06-28 01:44:56,858 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 234 predicate places. [2024-06-28 01:44:56,858 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 487 transitions, 6691 flow [2024-06-28 01:44:56,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:56,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:56,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:56,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:44:56,858 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:56,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:56,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1423289360, now seen corresponding path program 1 times [2024-06-28 01:44:56,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:56,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544463275] [2024-06-28 01:44:56,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:56,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:57,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:57,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:57,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544463275] [2024-06-28 01:44:57,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544463275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:57,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:57,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:57,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605358998] [2024-06-28 01:44:57,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:57,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:57,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:57,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:57,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:57,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:44:57,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 487 transitions, 6691 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:57,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:57,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:44:57,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:59,915 INFO L124 PetriNetUnfolderBase]: 6010/9548 cut-off events. [2024-06-28 01:44:59,915 INFO L125 PetriNetUnfolderBase]: For 431370/431462 co-relation queries the response was YES. [2024-06-28 01:44:59,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72886 conditions, 9548 events. 6010/9548 cut-off events. For 431370/431462 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 61480 event pairs, 1585 based on Foata normal form. 31/9313 useless extension candidates. Maximal degree in co-relation 72747. Up to 8400 conditions per place. [2024-06-28 01:45:00,035 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 454 selfloop transitions, 35 changer transitions 0/519 dead transitions. [2024-06-28 01:45:00,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 519 transitions, 7881 flow [2024-06-28 01:45:00,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:45:00,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:45:00,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 01:45:00,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968944099378882 [2024-06-28 01:45:00,036 INFO L175 Difference]: Start difference. First operand has 286 places, 487 transitions, 6691 flow. Second operand 7 states and 160 transitions. [2024-06-28 01:45:00,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 519 transitions, 7881 flow [2024-06-28 01:45:01,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 519 transitions, 7555 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-28 01:45:01,424 INFO L231 Difference]: Finished difference. Result has 283 places, 491 transitions, 6539 flow [2024-06-28 01:45:01,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6365, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6539, PETRI_PLACES=283, PETRI_TRANSITIONS=491} [2024-06-28 01:45:01,425 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 231 predicate places. [2024-06-28 01:45:01,425 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 491 transitions, 6539 flow [2024-06-28 01:45:01,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:01,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:01,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:01,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:45:01,425 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:45:01,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:01,425 INFO L85 PathProgramCache]: Analyzing trace with hash -417960946, now seen corresponding path program 1 times [2024-06-28 01:45:01,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:01,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485037845] [2024-06-28 01:45:01,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:01,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:02,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:02,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:02,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485037845] [2024-06-28 01:45:02,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485037845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:02,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:02,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:02,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800629643] [2024-06-28 01:45:02,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:02,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:02,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:02,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:02,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:02,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:45:02,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 491 transitions, 6539 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:02,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:02,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:45:02,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:04,583 INFO L124 PetriNetUnfolderBase]: 6336/9957 cut-off events. [2024-06-28 01:45:04,583 INFO L125 PetriNetUnfolderBase]: For 427438/427442 co-relation queries the response was YES. [2024-06-28 01:45:04,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73603 conditions, 9957 events. 6336/9957 cut-off events. For 427438/427442 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 63105 event pairs, 1793 based on Foata normal form. 2/9725 useless extension candidates. Maximal degree in co-relation 73467. Up to 9032 conditions per place. [2024-06-28 01:45:04,684 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 490 selfloop transitions, 32 changer transitions 0/530 dead transitions. [2024-06-28 01:45:04,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 530 transitions, 7903 flow [2024-06-28 01:45:04,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:04,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:04,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-28 01:45:04,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4592391304347826 [2024-06-28 01:45:04,685 INFO L175 Difference]: Start difference. First operand has 283 places, 491 transitions, 6539 flow. Second operand 8 states and 169 transitions. [2024-06-28 01:45:04,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 530 transitions, 7903 flow [2024-06-28 01:45:05,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 530 transitions, 7793 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 01:45:05,687 INFO L231 Difference]: Finished difference. Result has 286 places, 498 transitions, 6655 flow [2024-06-28 01:45:05,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6429, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6655, PETRI_PLACES=286, PETRI_TRANSITIONS=498} [2024-06-28 01:45:05,688 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 234 predicate places. [2024-06-28 01:45:05,688 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 498 transitions, 6655 flow [2024-06-28 01:45:05,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:05,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:05,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:05,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:45:05,688 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:45:05,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:05,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1088205330, now seen corresponding path program 2 times [2024-06-28 01:45:05,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:05,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738668788] [2024-06-28 01:45:05,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:05,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:06,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:06,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:06,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738668788] [2024-06-28 01:45:06,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738668788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:06,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:06,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:06,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913811872] [2024-06-28 01:45:06,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:06,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:06,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:06,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:06,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:06,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:45:06,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 498 transitions, 6655 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:06,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:06,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:45:06,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:08,858 INFO L124 PetriNetUnfolderBase]: 6376/10023 cut-off events. [2024-06-28 01:45:08,858 INFO L125 PetriNetUnfolderBase]: For 440920/440932 co-relation queries the response was YES. [2024-06-28 01:45:08,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74506 conditions, 10023 events. 6376/10023 cut-off events. For 440920/440932 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 63576 event pairs, 1751 based on Foata normal form. 10/9796 useless extension candidates. Maximal degree in co-relation 74369. Up to 9024 conditions per place. [2024-06-28 01:45:08,991 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 482 selfloop transitions, 55 changer transitions 0/545 dead transitions. [2024-06-28 01:45:08,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 545 transitions, 8132 flow [2024-06-28 01:45:08,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:08,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:08,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2024-06-28 01:45:08,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673913043478261 [2024-06-28 01:45:08,992 INFO L175 Difference]: Start difference. First operand has 286 places, 498 transitions, 6655 flow. Second operand 8 states and 172 transitions. [2024-06-28 01:45:08,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 545 transitions, 8132 flow [2024-06-28 01:45:10,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 545 transitions, 7957 flow, removed 48 selfloop flow, removed 6 redundant places. [2024-06-28 01:45:10,357 INFO L231 Difference]: Finished difference. Result has 288 places, 510 transitions, 6794 flow [2024-06-28 01:45:10,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6480, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6794, PETRI_PLACES=288, PETRI_TRANSITIONS=510} [2024-06-28 01:45:10,358 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 236 predicate places. [2024-06-28 01:45:10,358 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 510 transitions, 6794 flow [2024-06-28 01:45:10,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:10,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:10,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:10,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:45:10,358 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:45:10,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:10,359 INFO L85 PathProgramCache]: Analyzing trace with hash 815319118, now seen corresponding path program 3 times [2024-06-28 01:45:10,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:10,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082953641] [2024-06-28 01:45:10,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:10,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:11,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:11,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:11,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082953641] [2024-06-28 01:45:11,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082953641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:11,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:11,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:45:11,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924007573] [2024-06-28 01:45:11,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:11,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:45:11,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:11,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:45:11,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:45:11,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:45:11,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 510 transitions, 6794 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:11,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:11,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:45:11,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:13,140 INFO L124 PetriNetUnfolderBase]: 6391/10037 cut-off events. [2024-06-28 01:45:13,140 INFO L125 PetriNetUnfolderBase]: For 453148/453152 co-relation queries the response was YES. [2024-06-28 01:45:13,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75336 conditions, 10037 events. 6391/10037 cut-off events. For 453148/453152 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 63567 event pairs, 1734 based on Foata normal form. 2/9805 useless extension candidates. Maximal degree in co-relation 75198. Up to 8751 conditions per place. [2024-06-28 01:45:13,556 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 465 selfloop transitions, 110 changer transitions 0/583 dead transitions. [2024-06-28 01:45:13,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 583 transitions, 8811 flow [2024-06-28 01:45:13,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:13,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:13,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2024-06-28 01:45:13,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.483695652173913 [2024-06-28 01:45:13,558 INFO L175 Difference]: Start difference. First operand has 288 places, 510 transitions, 6794 flow. Second operand 8 states and 178 transitions. [2024-06-28 01:45:13,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 583 transitions, 8811 flow [2024-06-28 01:45:15,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 583 transitions, 8608 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-28 01:45:15,061 INFO L231 Difference]: Finished difference. Result has 294 places, 549 transitions, 7486 flow [2024-06-28 01:45:15,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6596, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7486, PETRI_PLACES=294, PETRI_TRANSITIONS=549} [2024-06-28 01:45:15,062 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 242 predicate places. [2024-06-28 01:45:15,062 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 549 transitions, 7486 flow [2024-06-28 01:45:15,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:15,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:15,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:15,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 01:45:15,062 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:45:15,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:15,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1079931120, now seen corresponding path program 4 times [2024-06-28 01:45:15,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:15,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123735826] [2024-06-28 01:45:15,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:15,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:15,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:15,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:15,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123735826] [2024-06-28 01:45:15,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123735826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:15,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:15,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:15,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056391504] [2024-06-28 01:45:15,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:15,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:15,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:15,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:15,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:15,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:45:15,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 549 transitions, 7486 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:15,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:15,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:45:15,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:18,011 INFO L124 PetriNetUnfolderBase]: 6392/10044 cut-off events. [2024-06-28 01:45:18,011 INFO L125 PetriNetUnfolderBase]: For 464304/464316 co-relation queries the response was YES. [2024-06-28 01:45:18,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76585 conditions, 10044 events. 6392/10044 cut-off events. For 464304/464316 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 63748 event pairs, 1747 based on Foata normal form. 10/9817 useless extension candidates. Maximal degree in co-relation 76443. Up to 9045 conditions per place. [2024-06-28 01:45:18,139 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 523 selfloop transitions, 62 changer transitions 0/593 dead transitions. [2024-06-28 01:45:18,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 593 transitions, 9104 flow [2024-06-28 01:45:18,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:18,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:18,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-28 01:45:18,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420289855072464 [2024-06-28 01:45:18,140 INFO L175 Difference]: Start difference. First operand has 294 places, 549 transitions, 7486 flow. Second operand 9 states and 183 transitions. [2024-06-28 01:45:18,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 593 transitions, 9104 flow [2024-06-28 01:45:19,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 593 transitions, 8873 flow, removed 104 selfloop flow, removed 2 redundant places. [2024-06-28 01:45:19,809 INFO L231 Difference]: Finished difference. Result has 301 places, 556 transitions, 7611 flow [2024-06-28 01:45:19,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7307, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7611, PETRI_PLACES=301, PETRI_TRANSITIONS=556} [2024-06-28 01:45:19,810 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 249 predicate places. [2024-06-28 01:45:19,810 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 556 transitions, 7611 flow [2024-06-28 01:45:19,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:19,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:19,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:19,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 01:45:19,810 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:45:19,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:19,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1029317322, now seen corresponding path program 1 times [2024-06-28 01:45:19,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:19,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957537495] [2024-06-28 01:45:19,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:19,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:20,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:20,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:20,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957537495] [2024-06-28 01:45:20,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957537495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:20,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:20,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:20,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476712296] [2024-06-28 01:45:20,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:20,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:20,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:20,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:20,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:20,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:45:20,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 556 transitions, 7611 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:20,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:20,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:45:20,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:22,823 INFO L124 PetriNetUnfolderBase]: 6458/10135 cut-off events. [2024-06-28 01:45:22,823 INFO L125 PetriNetUnfolderBase]: For 481665/481685 co-relation queries the response was YES. [2024-06-28 01:45:22,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78221 conditions, 10135 events. 6458/10135 cut-off events. For 481665/481685 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 64003 event pairs, 1366 based on Foata normal form. 24/9924 useless extension candidates. Maximal degree in co-relation 78077. Up to 8897 conditions per place. [2024-06-28 01:45:22,954 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 531 selfloop transitions, 67 changer transitions 0/606 dead transitions. [2024-06-28 01:45:22,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 606 transitions, 9154 flow [2024-06-28 01:45:22,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:22,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:22,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-28 01:45:22,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49728260869565216 [2024-06-28 01:45:22,955 INFO L175 Difference]: Start difference. First operand has 301 places, 556 transitions, 7611 flow. Second operand 8 states and 183 transitions. [2024-06-28 01:45:22,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 606 transitions, 9154 flow [2024-06-28 01:45:24,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 606 transitions, 8899 flow, removed 60 selfloop flow, removed 7 redundant places. [2024-06-28 01:45:24,412 INFO L231 Difference]: Finished difference. Result has 303 places, 563 transitions, 7656 flow [2024-06-28 01:45:24,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7356, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7656, PETRI_PLACES=303, PETRI_TRANSITIONS=563} [2024-06-28 01:45:24,412 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 251 predicate places. [2024-06-28 01:45:24,412 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 563 transitions, 7656 flow [2024-06-28 01:45:24,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:24,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:24,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:24,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 01:45:24,413 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:45:24,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:24,414 INFO L85 PathProgramCache]: Analyzing trace with hash 2069526786, now seen corresponding path program 2 times [2024-06-28 01:45:24,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:24,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149224578] [2024-06-28 01:45:24,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:24,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:25,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:25,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:25,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149224578] [2024-06-28 01:45:25,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149224578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:25,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:25,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:25,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709759300] [2024-06-28 01:45:25,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:25,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:25,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:25,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:25,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:25,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:45:25,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 563 transitions, 7656 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:25,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:25,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:45:25,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:27,434 INFO L124 PetriNetUnfolderBase]: 6524/10235 cut-off events. [2024-06-28 01:45:27,435 INFO L125 PetriNetUnfolderBase]: For 504895/504915 co-relation queries the response was YES. [2024-06-28 01:45:27,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80442 conditions, 10235 events. 6524/10235 cut-off events. For 504895/504915 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 64826 event pairs, 1703 based on Foata normal form. 24/10022 useless extension candidates. Maximal degree in co-relation 80296. Up to 9044 conditions per place. [2024-06-28 01:45:27,558 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 533 selfloop transitions, 67 changer transitions 0/608 dead transitions. [2024-06-28 01:45:27,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 608 transitions, 9204 flow [2024-06-28 01:45:27,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:27,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:27,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-28 01:45:27,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945652173913043 [2024-06-28 01:45:27,559 INFO L175 Difference]: Start difference. First operand has 303 places, 563 transitions, 7656 flow. Second operand 8 states and 182 transitions. [2024-06-28 01:45:27,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 608 transitions, 9204 flow [2024-06-28 01:45:29,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 608 transitions, 9009 flow, removed 45 selfloop flow, removed 4 redundant places. [2024-06-28 01:45:29,224 INFO L231 Difference]: Finished difference. Result has 307 places, 566 transitions, 7709 flow [2024-06-28 01:45:29,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7461, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7709, PETRI_PLACES=307, PETRI_TRANSITIONS=566} [2024-06-28 01:45:29,225 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 255 predicate places. [2024-06-28 01:45:29,225 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 566 transitions, 7709 flow [2024-06-28 01:45:29,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:29,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:29,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:29,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 01:45:29,225 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:45:29,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:29,226 INFO L85 PathProgramCache]: Analyzing trace with hash 2012378716, now seen corresponding path program 1 times [2024-06-28 01:45:29,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:29,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350428447] [2024-06-28 01:45:29,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:29,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:29,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:29,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:29,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350428447] [2024-06-28 01:45:29,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350428447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:29,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:29,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:29,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950822806] [2024-06-28 01:45:29,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:29,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:29,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:29,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:29,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:30,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:45:30,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 566 transitions, 7709 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:30,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:30,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:45:30,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:32,322 INFO L124 PetriNetUnfolderBase]: 6672/10457 cut-off events. [2024-06-28 01:45:32,322 INFO L125 PetriNetUnfolderBase]: For 531300/531312 co-relation queries the response was YES. [2024-06-28 01:45:32,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82789 conditions, 10457 events. 6672/10457 cut-off events. For 531300/531312 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 66377 event pairs, 1465 based on Foata normal form. 16/10232 useless extension candidates. Maximal degree in co-relation 82642. Up to 8761 conditions per place. [2024-06-28 01:45:32,459 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 514 selfloop transitions, 122 changer transitions 0/644 dead transitions. [2024-06-28 01:45:32,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 644 transitions, 10132 flow [2024-06-28 01:45:32,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:32,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:32,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-28 01:45:32,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5241545893719807 [2024-06-28 01:45:32,461 INFO L175 Difference]: Start difference. First operand has 307 places, 566 transitions, 7709 flow. Second operand 9 states and 217 transitions. [2024-06-28 01:45:32,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 644 transitions, 10132 flow [2024-06-28 01:45:34,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 644 transitions, 9893 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-28 01:45:34,133 INFO L231 Difference]: Finished difference. Result has 311 places, 588 transitions, 8284 flow [2024-06-28 01:45:34,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7477, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8284, PETRI_PLACES=311, PETRI_TRANSITIONS=588} [2024-06-28 01:45:34,133 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 259 predicate places. [2024-06-28 01:45:34,134 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 588 transitions, 8284 flow [2024-06-28 01:45:34,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:34,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:34,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:34,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 01:45:34,134 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:45:34,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:34,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1147647174, now seen corresponding path program 1 times [2024-06-28 01:45:34,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:34,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907279275] [2024-06-28 01:45:34,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:34,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:34,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:34,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:34,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907279275] [2024-06-28 01:45:34,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907279275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:34,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:34,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:34,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233650314] [2024-06-28 01:45:34,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:34,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:34,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:34,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:34,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:34,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:45:34,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 588 transitions, 8284 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:34,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:34,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:45:34,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:37,173 INFO L124 PetriNetUnfolderBase]: 6738/10524 cut-off events. [2024-06-28 01:45:37,173 INFO L125 PetriNetUnfolderBase]: For 555254/555258 co-relation queries the response was YES. [2024-06-28 01:45:37,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85258 conditions, 10524 events. 6738/10524 cut-off events. For 555254/555258 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 66485 event pairs, 1529 based on Foata normal form. 5/10289 useless extension candidates. Maximal degree in co-relation 85108. Up to 8990 conditions per place. [2024-06-28 01:45:37,306 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 520 selfloop transitions, 114 changer transitions 0/642 dead transitions. [2024-06-28 01:45:37,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 642 transitions, 9965 flow [2024-06-28 01:45:37,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:37,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:37,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 01:45:37,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163043478260869 [2024-06-28 01:45:37,308 INFO L175 Difference]: Start difference. First operand has 311 places, 588 transitions, 8284 flow. Second operand 8 states and 190 transitions. [2024-06-28 01:45:37,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 642 transitions, 9965 flow [2024-06-28 01:45:39,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 642 transitions, 9606 flow, removed 113 selfloop flow, removed 4 redundant places. [2024-06-28 01:45:39,388 INFO L231 Difference]: Finished difference. Result has 316 places, 599 transitions, 8375 flow [2024-06-28 01:45:39,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7930, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8375, PETRI_PLACES=316, PETRI_TRANSITIONS=599} [2024-06-28 01:45:39,388 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 264 predicate places. [2024-06-28 01:45:39,388 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 599 transitions, 8375 flow [2024-06-28 01:45:39,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:39,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:39,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:39,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 01:45:39,389 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:45:39,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:39,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1147768074, now seen corresponding path program 2 times [2024-06-28 01:45:39,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:39,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294661581] [2024-06-28 01:45:39,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:39,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:40,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:40,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:40,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294661581] [2024-06-28 01:45:40,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294661581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:40,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:40,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:45:40,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924632525] [2024-06-28 01:45:40,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:40,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:45:40,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:40,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:45:40,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:45:40,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:45:40,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 599 transitions, 8375 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:40,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:40,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:45:40,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:42,570 INFO L124 PetriNetUnfolderBase]: 6846/10675 cut-off events. [2024-06-28 01:45:42,570 INFO L125 PetriNetUnfolderBase]: For 584976/584980 co-relation queries the response was YES. [2024-06-28 01:45:42,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88808 conditions, 10675 events. 6846/10675 cut-off events. For 584976/584980 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 67435 event pairs, 1514 based on Foata normal form. 5/10440 useless extension candidates. Maximal degree in co-relation 88655. Up to 9026 conditions per place. [2024-06-28 01:45:43,041 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 529 selfloop transitions, 120 changer transitions 0/657 dead transitions. [2024-06-28 01:45:43,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 657 transitions, 10415 flow [2024-06-28 01:45:43,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:43,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:43,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 01:45:43,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163043478260869 [2024-06-28 01:45:43,042 INFO L175 Difference]: Start difference. First operand has 316 places, 599 transitions, 8375 flow. Second operand 8 states and 190 transitions. [2024-06-28 01:45:43,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 657 transitions, 10415 flow [2024-06-28 01:45:44,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 657 transitions, 10117 flow, removed 66 selfloop flow, removed 4 redundant places. [2024-06-28 01:45:44,985 INFO L231 Difference]: Finished difference. Result has 321 places, 614 transitions, 8714 flow [2024-06-28 01:45:44,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8077, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8714, PETRI_PLACES=321, PETRI_TRANSITIONS=614} [2024-06-28 01:45:44,986 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 269 predicate places. [2024-06-28 01:45:44,986 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 614 transitions, 8714 flow [2024-06-28 01:45:44,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:44,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:44,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:44,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 01:45:44,986 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:45:44,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:44,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1147768291, now seen corresponding path program 1 times [2024-06-28 01:45:44,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:44,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542860436] [2024-06-28 01:45:44,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:44,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:45,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:45,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:45,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542860436] [2024-06-28 01:45:45,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542860436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:45,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:45,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:45:45,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101919226] [2024-06-28 01:45:45,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:45,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:45:45,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:45,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:45:45,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:45:45,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:45:45,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 614 transitions, 8714 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:45,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:45,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:45:45,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:48,105 INFO L124 PetriNetUnfolderBase]: 6886/10697 cut-off events. [2024-06-28 01:45:48,105 INFO L125 PetriNetUnfolderBase]: For 604456/604468 co-relation queries the response was YES. [2024-06-28 01:45:48,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90662 conditions, 10697 events. 6886/10697 cut-off events. For 604456/604468 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 67267 event pairs, 1558 based on Foata normal form. 11/10477 useless extension candidates. Maximal degree in co-relation 90507. Up to 9538 conditions per place. [2024-06-28 01:45:48,243 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 577 selfloop transitions, 70 changer transitions 0/655 dead transitions. [2024-06-28 01:45:48,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 655 transitions, 10333 flow [2024-06-28 01:45:48,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:48,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:48,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-06-28 01:45:48,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48641304347826086 [2024-06-28 01:45:48,244 INFO L175 Difference]: Start difference. First operand has 321 places, 614 transitions, 8714 flow. Second operand 8 states and 179 transitions. [2024-06-28 01:45:48,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 655 transitions, 10333 flow [2024-06-28 01:45:51,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 655 transitions, 10010 flow, removed 99 selfloop flow, removed 4 redundant places. [2024-06-28 01:45:51,043 INFO L231 Difference]: Finished difference. Result has 325 places, 618 transitions, 8641 flow [2024-06-28 01:45:51,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8405, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8641, PETRI_PLACES=325, PETRI_TRANSITIONS=618} [2024-06-28 01:45:51,043 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 273 predicate places. [2024-06-28 01:45:51,043 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 618 transitions, 8641 flow [2024-06-28 01:45:51,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:51,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:51,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:51,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 01:45:51,044 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:45:51,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:51,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1326089281, now seen corresponding path program 2 times [2024-06-28 01:45:51,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:51,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137175995] [2024-06-28 01:45:51,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:51,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:51,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:51,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:51,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137175995] [2024-06-28 01:45:51,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137175995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:51,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:51,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:45:51,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712581823] [2024-06-28 01:45:51,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:51,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:45:51,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:51,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:45:51,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:45:51,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:45:51,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 618 transitions, 8641 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:51,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:51,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:45:51,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:54,681 INFO L124 PetriNetUnfolderBase]: 6926/10755 cut-off events. [2024-06-28 01:45:54,681 INFO L125 PetriNetUnfolderBase]: For 610556/610568 co-relation queries the response was YES. [2024-06-28 01:45:54,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90911 conditions, 10755 events. 6926/10755 cut-off events. For 610556/610568 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 67672 event pairs, 1546 based on Foata normal form. 11/10535 useless extension candidates. Maximal degree in co-relation 90754. Up to 9256 conditions per place. [2024-06-28 01:45:54,804 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 554 selfloop transitions, 102 changer transitions 0/664 dead transitions. [2024-06-28 01:45:54,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 664 transitions, 10550 flow [2024-06-28 01:45:54,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:54,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:54,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-28 01:45:54,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49184782608695654 [2024-06-28 01:45:54,805 INFO L175 Difference]: Start difference. First operand has 325 places, 618 transitions, 8641 flow. Second operand 8 states and 181 transitions. [2024-06-28 01:45:54,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 664 transitions, 10550 flow [2024-06-28 01:45:56,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 664 transitions, 10370 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 01:45:56,765 INFO L231 Difference]: Finished difference. Result has 327 places, 622 transitions, 8767 flow [2024-06-28 01:45:56,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8461, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8767, PETRI_PLACES=327, PETRI_TRANSITIONS=622} [2024-06-28 01:45:56,766 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 275 predicate places. [2024-06-28 01:45:56,766 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 622 transitions, 8767 flow [2024-06-28 01:45:56,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:56,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:56,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:56,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 01:45:56,766 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:45:56,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:56,767 INFO L85 PathProgramCache]: Analyzing trace with hash 948267105, now seen corresponding path program 3 times [2024-06-28 01:45:56,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:56,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350257396] [2024-06-28 01:45:56,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:56,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:57,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:57,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:57,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350257396] [2024-06-28 01:45:57,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350257396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:57,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:57,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:45:57,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834354899] [2024-06-28 01:45:57,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:57,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:45:57,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:57,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:45:57,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:45:57,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:45:57,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 622 transitions, 8767 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:57,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:57,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:45:57,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:00,387 INFO L124 PetriNetUnfolderBase]: 6943/10781 cut-off events. [2024-06-28 01:46:00,387 INFO L125 PetriNetUnfolderBase]: For 620707/620719 co-relation queries the response was YES. [2024-06-28 01:46:00,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91406 conditions, 10781 events. 6943/10781 cut-off events. For 620707/620719 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 67826 event pairs, 1541 based on Foata normal form. 11/10558 useless extension candidates. Maximal degree in co-relation 91248. Up to 9267 conditions per place. [2024-06-28 01:46:00,659 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 557 selfloop transitions, 102 changer transitions 0/667 dead transitions. [2024-06-28 01:46:00,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 667 transitions, 10675 flow [2024-06-28 01:46:00,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:46:00,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:46:00,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-28 01:46:00,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945652173913043 [2024-06-28 01:46:00,660 INFO L175 Difference]: Start difference. First operand has 327 places, 622 transitions, 8767 flow. Second operand 8 states and 182 transitions. [2024-06-28 01:46:00,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 667 transitions, 10675 flow [2024-06-28 01:46:02,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 667 transitions, 10465 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 01:46:02,441 INFO L231 Difference]: Finished difference. Result has 330 places, 625 transitions, 8849 flow [2024-06-28 01:46:02,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8559, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8849, PETRI_PLACES=330, PETRI_TRANSITIONS=625} [2024-06-28 01:46:02,442 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 278 predicate places. [2024-06-28 01:46:02,442 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 625 transitions, 8849 flow [2024-06-28 01:46:02,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:02,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:02,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:02,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 01:46:02,443 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:46:02,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:02,443 INFO L85 PathProgramCache]: Analyzing trace with hash 671696868, now seen corresponding path program 3 times [2024-06-28 01:46:02,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:02,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928147189] [2024-06-28 01:46:02,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:02,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:03,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:03,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:03,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928147189] [2024-06-28 01:46:03,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928147189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:03,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:03,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:46:03,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673322976] [2024-06-28 01:46:03,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:03,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:46:03,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:03,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:46:03,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:46:03,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:46:03,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 625 transitions, 8849 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:03,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:03,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:46:03,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:06,106 INFO L124 PetriNetUnfolderBase]: 7090/11037 cut-off events. [2024-06-28 01:46:06,106 INFO L125 PetriNetUnfolderBase]: For 656310/656314 co-relation queries the response was YES. [2024-06-28 01:46:06,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94063 conditions, 11037 events. 7090/11037 cut-off events. For 656310/656314 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 69812 event pairs, 1514 based on Foata normal form. 5/10798 useless extension candidates. Maximal degree in co-relation 93904. Up to 9016 conditions per place. [2024-06-28 01:46:06,236 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 551 selfloop transitions, 135 changer transitions 0/694 dead transitions. [2024-06-28 01:46:06,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 694 transitions, 11323 flow [2024-06-28 01:46:06,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:46:06,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:46:06,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 01:46:06,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054347826086957 [2024-06-28 01:46:06,237 INFO L175 Difference]: Start difference. First operand has 330 places, 625 transitions, 8849 flow. Second operand 8 states and 186 transitions. [2024-06-28 01:46:06,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 694 transitions, 11323 flow [2024-06-28 01:46:08,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 694 transitions, 11115 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 01:46:08,192 INFO L231 Difference]: Finished difference. Result has 335 places, 649 transitions, 9617 flow [2024-06-28 01:46:08,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8653, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9617, PETRI_PLACES=335, PETRI_TRANSITIONS=649} [2024-06-28 01:46:08,193 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 283 predicate places. [2024-06-28 01:46:08,193 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 649 transitions, 9617 flow [2024-06-28 01:46:08,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:08,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:08,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:08,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 01:46:08,193 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:46:08,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:08,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1325699022, now seen corresponding path program 3 times [2024-06-28 01:46:08,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:08,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080478520] [2024-06-28 01:46:08,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:08,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:08,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:08,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:08,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080478520] [2024-06-28 01:46:08,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080478520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:08,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:08,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:46:08,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471313581] [2024-06-28 01:46:08,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:08,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:46:08,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:08,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:46:08,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:46:08,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:46:08,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 649 transitions, 9617 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:08,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:08,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:46:08,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:12,055 INFO L124 PetriNetUnfolderBase]: 7156/11122 cut-off events. [2024-06-28 01:46:12,055 INFO L125 PetriNetUnfolderBase]: For 701577/701589 co-relation queries the response was YES. [2024-06-28 01:46:12,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97761 conditions, 11122 events. 7156/11122 cut-off events. For 701577/701589 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 70496 event pairs, 1552 based on Foata normal form. 13/10894 useless extension candidates. Maximal degree in co-relation 97599. Up to 9731 conditions per place. [2024-06-28 01:46:12,196 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 592 selfloop transitions, 93 changer transitions 0/693 dead transitions. [2024-06-28 01:46:12,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 693 transitions, 11504 flow [2024-06-28 01:46:12,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:46:12,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:46:12,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-06-28 01:46:12,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48641304347826086 [2024-06-28 01:46:12,198 INFO L175 Difference]: Start difference. First operand has 335 places, 649 transitions, 9617 flow. Second operand 8 states and 179 transitions. [2024-06-28 01:46:12,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 693 transitions, 11504 flow [2024-06-28 01:46:14,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 693 transitions, 11061 flow, removed 175 selfloop flow, removed 3 redundant places. [2024-06-28 01:46:14,583 INFO L231 Difference]: Finished difference. Result has 340 places, 652 transitions, 9547 flow [2024-06-28 01:46:14,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9222, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9547, PETRI_PLACES=340, PETRI_TRANSITIONS=652} [2024-06-28 01:46:14,584 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 288 predicate places. [2024-06-28 01:46:14,584 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 652 transitions, 9547 flow [2024-06-28 01:46:14,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:14,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:14,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:14,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 01:46:14,585 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:46:14,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:14,586 INFO L85 PathProgramCache]: Analyzing trace with hash -437437601, now seen corresponding path program 1 times [2024-06-28 01:46:14,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:14,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256492031] [2024-06-28 01:46:14,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:14,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:15,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:15,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:15,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256492031] [2024-06-28 01:46:15,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256492031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:15,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:15,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:15,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487891333] [2024-06-28 01:46:15,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:15,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:15,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:15,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:15,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:15,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:46:15,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 652 transitions, 9547 flow. Second operand has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 11 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:15,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:15,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:46:15,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:19,122 INFO L124 PetriNetUnfolderBase]: 7197/11177 cut-off events. [2024-06-28 01:46:19,122 INFO L125 PetriNetUnfolderBase]: For 714076/714088 co-relation queries the response was YES. [2024-06-28 01:46:19,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98954 conditions, 11177 events. 7197/11177 cut-off events. For 714076/714088 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 70677 event pairs, 1494 based on Foata normal form. 14/10950 useless extension candidates. Maximal degree in co-relation 98790. Up to 10171 conditions per place. [2024-06-28 01:46:19,269 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 661 selfloop transitions, 35 changer transitions 0/704 dead transitions. [2024-06-28 01:46:19,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 704 transitions, 11444 flow [2024-06-28 01:46:19,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:46:19,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:46:19,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 192 transitions. [2024-06-28 01:46:19,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463768115942029 [2024-06-28 01:46:19,271 INFO L175 Difference]: Start difference. First operand has 340 places, 652 transitions, 9547 flow. Second operand 9 states and 192 transitions. [2024-06-28 01:46:19,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 704 transitions, 11444 flow [2024-06-28 01:46:21,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 704 transitions, 11153 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-28 01:46:21,660 INFO L231 Difference]: Finished difference. Result has 344 places, 662 transitions, 9644 flow [2024-06-28 01:46:21,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9256, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=619, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9644, PETRI_PLACES=344, PETRI_TRANSITIONS=662} [2024-06-28 01:46:21,661 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 292 predicate places. [2024-06-28 01:46:21,661 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 662 transitions, 9644 flow [2024-06-28 01:46:21,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 11 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:21,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:21,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:21,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 01:46:21,662 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:46:21,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:21,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1937647546, now seen corresponding path program 2 times [2024-06-28 01:46:21,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:21,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752086055] [2024-06-28 01:46:21,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:21,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:22,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:22,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:22,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752086055] [2024-06-28 01:46:22,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752086055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:22,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:22,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:22,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272447013] [2024-06-28 01:46:22,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:22,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:22,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:22,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:22,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:22,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:46:22,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 662 transitions, 9644 flow. Second operand has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 11 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:22,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:22,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:46:22,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:26,306 INFO L124 PetriNetUnfolderBase]: 7423/11531 cut-off events. [2024-06-28 01:46:26,307 INFO L125 PetriNetUnfolderBase]: For 773050/773054 co-relation queries the response was YES. [2024-06-28 01:46:26,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103233 conditions, 11531 events. 7423/11531 cut-off events. For 773050/773054 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 73266 event pairs, 1518 based on Foata normal form. 5/11289 useless extension candidates. Maximal degree in co-relation 103067. Up to 8991 conditions per place. [2024-06-28 01:46:26,451 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 581 selfloop transitions, 175 changer transitions 0/764 dead transitions. [2024-06-28 01:46:26,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 764 transitions, 13231 flow [2024-06-28 01:46:26,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:46:26,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:46:26,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-28 01:46:26,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5193236714975845 [2024-06-28 01:46:26,453 INFO L175 Difference]: Start difference. First operand has 344 places, 662 transitions, 9644 flow. Second operand 9 states and 215 transitions. [2024-06-28 01:46:26,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 764 transitions, 13231 flow [2024-06-28 01:46:28,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 764 transitions, 12951 flow, removed 124 selfloop flow, removed 5 redundant places. [2024-06-28 01:46:28,883 INFO L231 Difference]: Finished difference. Result has 351 places, 705 transitions, 11010 flow [2024-06-28 01:46:28,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9364, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11010, PETRI_PLACES=351, PETRI_TRANSITIONS=705} [2024-06-28 01:46:28,884 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 299 predicate places. [2024-06-28 01:46:28,884 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 705 transitions, 11010 flow [2024-06-28 01:46:28,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 11 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:28,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:28,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:28,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 01:46:28,885 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:46:28,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:28,886 INFO L85 PathProgramCache]: Analyzing trace with hash -437438066, now seen corresponding path program 3 times [2024-06-28 01:46:28,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:28,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123407541] [2024-06-28 01:46:28,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:28,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat