./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix052_power.oepc_power.opt_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix052_power.oepc_power.opt_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix052_power.oepc_power.opt_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix052_power.oepc_power.opt_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:40:35,381 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:40:35,421 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:40:35,424 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:40:35,425 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:40:35,447 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:40:35,447 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:40:35,448 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:40:35,448 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:40:35,451 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:40:35,452 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:40:35,452 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:40:35,452 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:40:35,453 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:40:35,453 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:40:35,454 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:40:35,454 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:40:35,454 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:40:35,454 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:40:35,454 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:40:35,454 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:40:35,455 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:40:35,455 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:40:35,455 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:40:35,455 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:40:35,455 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:40:35,456 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:40:35,456 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:40:35,456 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:40:35,456 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:40:35,457 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:40:35,457 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:40:35,457 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:40:35,458 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:40:35,458 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:40:35,458 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:40:35,458 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:40:35,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:40:35,458 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:40:35,458 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:40:35,459 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:40:35,459 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:40:35,459 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:40:35,459 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:40:35,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:40:35,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:40:35,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:40:35,684 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:40:35,685 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:40:35,686 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix052_power.oepc_power.opt_pso.oepc_rmo.oepc.i [2024-06-28 01:40:36,776 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:40:36,944 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:40:36,944 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix052_power.oepc_power.opt_pso.oepc_rmo.oepc.i [2024-06-28 01:40:36,972 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8897b0591/57373b52442d434d85f4cd2ecd2c2f86/FLAG5951a3a59 [2024-06-28 01:40:36,983 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8897b0591/57373b52442d434d85f4cd2ecd2c2f86 [2024-06-28 01:40:36,985 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:40:36,985 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:40:36,986 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix052_power.oepc_power.opt_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-28 01:40:37,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:40:37,101 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:40:37,102 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:40:37,102 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:40:37,106 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:40:37,125 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:40:36" (1/2) ... [2024-06-28 01:40:37,125 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68bc9723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:37, skipping insertion in model container [2024-06-28 01:40:37,126 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:40:36" (1/2) ... [2024-06-28 01:40:37,127 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@550ac77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:37, skipping insertion in model container [2024-06-28 01:40:37,127 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:40:37" (2/2) ... [2024-06-28 01:40:37,127 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68bc9723 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:40:37, skipping insertion in model container [2024-06-28 01:40:37,127 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:40:37" (2/2) ... [2024-06-28 01:40:37,128 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:40:37,216 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:40:37,217 INFO L97 edCorrectnessWitness]: Location invariant before [L838-L838] (((((((((((((((((! multithreaded || z$r_buff0_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1)) [2024-06-28 01:40:37,218 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] (((((((((((((((((! multithreaded || z$r_buff0_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1)) [2024-06-28 01:40:37,218 INFO L97 edCorrectnessWitness]: Location invariant before [L836-L836] (((((((((((((((((! multithreaded || z$r_buff0_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1)) [2024-06-28 01:40:37,218 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:40:37,218 INFO L106 edCorrectnessWitness]: ghost_update [L834-L834] multithreaded = 1; [2024-06-28 01:40:37,256 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:40:37,369 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix052_power.oepc_power.opt_pso.oepc_rmo.oepc.i[979,992] [2024-06-28 01:40:37,467 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:40:37,474 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:40:37,500 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix052_power.oepc_power.opt_pso.oepc_rmo.oepc.i[979,992] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:40:37,584 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:40:37,619 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:40:37,620 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:40:37 WrapperNode [2024-06-28 01:40:37,620 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:40:37,621 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:40:37,621 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:40:37,621 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:40:37,627 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 01:40:37" (1/1) ... [2024-06-28 01:40:37,639 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 01:40:37" (1/1) ... [2024-06-28 01:40:37,665 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 121 [2024-06-28 01:40:37,665 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:40:37,666 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:40:37,666 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:40:37,666 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:40:37,675 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 01:40:37" (1/1) ... [2024-06-28 01:40:37,675 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 01:40:37" (1/1) ... [2024-06-28 01:40:37,678 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 01:40:37" (1/1) ... [2024-06-28 01:40:37,691 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 01:40:37,691 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 01:40:37" (1/1) ... [2024-06-28 01:40:37,692 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 01:40:37" (1/1) ... [2024-06-28 01:40:37,699 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 01:40:37" (1/1) ... [2024-06-28 01:40:37,701 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 01:40:37" (1/1) ... [2024-06-28 01:40:37,702 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 01:40:37" (1/1) ... [2024-06-28 01:40:37,703 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 01:40:37" (1/1) ... [2024-06-28 01:40:37,706 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:40:37,707 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:40:37,707 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:40:37,707 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:40:37,708 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 01:40:37" (1/1) ... [2024-06-28 01:40:37,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:40:37,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:40:37,746 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:40:37,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:40:37,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:40:37,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:40:37,819 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:40:37,819 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:40:37,820 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:40:37,820 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:40:37,820 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:40:37,820 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:40:37,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:40:37,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:40:37,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:40:37,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:40:37,823 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:40:37,941 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:40:37,943 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:40:38,338 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:40:38,338 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:40:38,505 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:40:38,505 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:40:38,505 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:40:38 BoogieIcfgContainer [2024-06-28 01:40:38,505 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:40:38,523 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:40:38,523 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:40:38,525 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:40:38,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:40:36" (1/4) ... [2024-06-28 01:40:38,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2176c72d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:40:38, skipping insertion in model container [2024-06-28 01:40:38,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:40:37" (2/4) ... [2024-06-28 01:40:38,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2176c72d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:40:38, skipping insertion in model container [2024-06-28 01:40:38,526 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 01:40:37" (3/4) ... [2024-06-28 01:40:38,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2176c72d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:40:38, skipping insertion in model container [2024-06-28 01:40:38,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:40:38" (4/4) ... [2024-06-28 01:40:38,527 INFO L112 eAbstractionObserver]: Analyzing ICFG mix052_power.oepc_power.opt_pso.oepc_rmo.oepc.i [2024-06-28 01:40:38,563 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:40:38,563 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:40:38,563 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:40:38,623 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:40:38,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-28 01:40:38,665 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-28 01:40:38,665 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:40:38,667 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 4. Compared 72 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-06-28 01:40:38,667 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-28 01:40:38,669 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 43 transitions, 95 flow [2024-06-28 01:40:38,676 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:40:38,681 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;@666a9541, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:40:38,681 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:40:38,683 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:40:38,683 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:40:38,683 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:40:38,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:38,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:40:38,684 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:38,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:38,688 INFO L85 PathProgramCache]: Analyzing trace with hash 349182522, now seen corresponding path program 1 times [2024-06-28 01:40:38,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:38,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601315622] [2024-06-28 01:40:38,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:38,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:39,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:39,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:39,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601315622] [2024-06-28 01:40:39,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601315622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:39,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:39,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:40:39,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066070718] [2024-06-28 01:40:39,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:39,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:40:39,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:39,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:40:39,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:40:39,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-28 01:40:39,598 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 01:40:39,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:39,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-28 01:40:39,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:40,269 INFO L124 PetriNetUnfolderBase]: 3699/5399 cut-off events. [2024-06-28 01:40:40,269 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-06-28 01:40:40,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10825 conditions, 5399 events. 3699/5399 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 29763 event pairs, 2061 based on Foata normal form. 211/5333 useless extension candidates. Maximal degree in co-relation 10813. Up to 5323 conditions per place. [2024-06-28 01:40:40,297 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 41 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-28 01:40:40,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 221 flow [2024-06-28 01:40:40,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:40:40,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:40:40,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-06-28 01:40:40,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6739130434782609 [2024-06-28 01:40:40,308 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 95 flow. Second operand 3 states and 93 transitions. [2024-06-28 01:40:40,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 221 flow [2024-06-28 01:40:40,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 216 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:40:40,315 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 127 flow [2024-06-28 01:40:40,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-06-28 01:40:40,319 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-06-28 01:40:40,319 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 127 flow [2024-06-28 01:40:40,320 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 01:40:40,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:40,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:40:40,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:40:40,320 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:40,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:40,321 INFO L85 PathProgramCache]: Analyzing trace with hash 349183632, now seen corresponding path program 1 times [2024-06-28 01:40:40,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:40,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790389101] [2024-06-28 01:40:40,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:40,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:40,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:40,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:40,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790389101] [2024-06-28 01:40:40,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790389101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:40,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:40,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:40:40,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377365102] [2024-06-28 01:40:40,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:40,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:40:40,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:40,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:40:40,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:40:40,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 46 [2024-06-28 01:40:40,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:40,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:40,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 46 [2024-06-28 01:40:40,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:40,602 INFO L124 PetriNetUnfolderBase]: 996/1975 cut-off events. [2024-06-28 01:40:40,602 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-06-28 01:40:40,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3739 conditions, 1975 events. 996/1975 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 13470 event pairs, 655 based on Foata normal form. 0/1819 useless extension candidates. Maximal degree in co-relation 3727. Up to 1277 conditions per place. [2024-06-28 01:40:40,612 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 35 selfloop transitions, 3 changer transitions 0/60 dead transitions. [2024-06-28 01:40:40,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 60 transitions, 230 flow [2024-06-28 01:40:40,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:40:40,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:40:40,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-06-28 01:40:40,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7753623188405797 [2024-06-28 01:40:40,613 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 127 flow. Second operand 3 states and 107 transitions. [2024-06-28 01:40:40,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 60 transitions, 230 flow [2024-06-28 01:40:40,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 60 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:40:40,615 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 120 flow [2024-06-28 01:40:40,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2024-06-28 01:40:40,616 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-06-28 01:40:40,616 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 120 flow [2024-06-28 01:40:40,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:40,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:40,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:40,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:40:40,616 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:40,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:40,617 INFO L85 PathProgramCache]: Analyzing trace with hash 556988664, now seen corresponding path program 1 times [2024-06-28 01:40:40,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:40,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479065097] [2024-06-28 01:40:40,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:40,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:41,032 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 01:40:41,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:41,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479065097] [2024-06-28 01:40:41,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479065097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:41,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:41,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:40:41,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648951325] [2024-06-28 01:40:41,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:41,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:40:41,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:41,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:40:41,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:40:41,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-28 01:40:41,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:41,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:41,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-28 01:40:41,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:41,541 INFO L124 PetriNetUnfolderBase]: 3141/5299 cut-off events. [2024-06-28 01:40:41,541 INFO L125 PetriNetUnfolderBase]: For 1206/1206 co-relation queries the response was YES. [2024-06-28 01:40:41,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11080 conditions, 5299 events. 3141/5299 cut-off events. For 1206/1206 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 33635 event pairs, 2322 based on Foata normal form. 3/5119 useless extension candidates. Maximal degree in co-relation 11067. Up to 4514 conditions per place. [2024-06-28 01:40:41,561 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 49 selfloop transitions, 8 changer transitions 2/70 dead transitions. [2024-06-28 01:40:41,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 310 flow [2024-06-28 01:40:41,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:40:41,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:40:41,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-06-28 01:40:41,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-28 01:40:41,563 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 120 flow. Second operand 4 states and 115 transitions. [2024-06-28 01:40:41,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 310 flow [2024-06-28 01:40:41,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 70 transitions, 302 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:40:41,564 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 181 flow [2024-06-28 01:40:41,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-06-28 01:40:41,565 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-06-28 01:40:41,565 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 181 flow [2024-06-28 01:40:41,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:41,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:41,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:41,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:40:41,566 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:41,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:41,566 INFO L85 PathProgramCache]: Analyzing trace with hash 86780557, now seen corresponding path program 1 times [2024-06-28 01:40:41,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:41,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581500543] [2024-06-28 01:40:41,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:41,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:42,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:42,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:42,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581500543] [2024-06-28 01:40:42,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581500543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:42,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:42,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:40:42,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153041550] [2024-06-28 01:40:42,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:42,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:40:42,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:42,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:40:42,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:40:42,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-28 01:40:42,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:42,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:42,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-28 01:40:42,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:42,574 INFO L124 PetriNetUnfolderBase]: 2799/4690 cut-off events. [2024-06-28 01:40:42,574 INFO L125 PetriNetUnfolderBase]: For 2079/2079 co-relation queries the response was YES. [2024-06-28 01:40:42,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10813 conditions, 4690 events. 2799/4690 cut-off events. For 2079/2079 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 29260 event pairs, 1265 based on Foata normal form. 7/4510 useless extension candidates. Maximal degree in co-relation 10798. Up to 3877 conditions per place. [2024-06-28 01:40:42,608 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 67 selfloop transitions, 18 changer transitions 0/96 dead transitions. [2024-06-28 01:40:42,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 96 transitions, 497 flow [2024-06-28 01:40:42,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:40:42,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:40:42,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 150 transitions. [2024-06-28 01:40:42,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2024-06-28 01:40:42,612 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 181 flow. Second operand 5 states and 150 transitions. [2024-06-28 01:40:42,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 96 transitions, 497 flow [2024-06-28 01:40:42,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 96 transitions, 486 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 01:40:42,616 INFO L231 Difference]: Finished difference. Result has 60 places, 62 transitions, 297 flow [2024-06-28 01:40:42,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=297, PETRI_PLACES=60, PETRI_TRANSITIONS=62} [2024-06-28 01:40:42,617 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2024-06-28 01:40:42,617 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 62 transitions, 297 flow [2024-06-28 01:40:42,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:42,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:42,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:42,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:40:42,618 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:42,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:42,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1604768841, now seen corresponding path program 1 times [2024-06-28 01:40:42,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:42,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899887483] [2024-06-28 01:40:42,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:42,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:43,378 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 01:40:43,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:43,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899887483] [2024-06-28 01:40:43,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899887483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:43,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:43,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:40:43,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614147492] [2024-06-28 01:40:43,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:43,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:40:43,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:43,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:40:43,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:40:43,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-28 01:40:43,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 62 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:43,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:43,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-28 01:40:43,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:44,076 INFO L124 PetriNetUnfolderBase]: 2849/4892 cut-off events. [2024-06-28 01:40:44,076 INFO L125 PetriNetUnfolderBase]: For 5355/5355 co-relation queries the response was YES. [2024-06-28 01:40:44,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13306 conditions, 4892 events. 2849/4892 cut-off events. For 5355/5355 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 31609 event pairs, 1252 based on Foata normal form. 7/4713 useless extension candidates. Maximal degree in co-relation 13287. Up to 3782 conditions per place. [2024-06-28 01:40:44,102 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 85 selfloop transitions, 32 changer transitions 0/128 dead transitions. [2024-06-28 01:40:44,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 128 transitions, 801 flow [2024-06-28 01:40:44,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:40:44,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:40:44,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2024-06-28 01:40:44,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6630434782608695 [2024-06-28 01:40:44,104 INFO L175 Difference]: Start difference. First operand has 60 places, 62 transitions, 297 flow. Second operand 6 states and 183 transitions. [2024-06-28 01:40:44,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 128 transitions, 801 flow [2024-06-28 01:40:44,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 128 transitions, 793 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-28 01:40:44,110 INFO L231 Difference]: Finished difference. Result has 69 places, 77 transitions, 504 flow [2024-06-28 01:40:44,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=504, PETRI_PLACES=69, PETRI_TRANSITIONS=77} [2024-06-28 01:40:44,111 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 17 predicate places. [2024-06-28 01:40:44,111 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 77 transitions, 504 flow [2024-06-28 01:40:44,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:44,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:44,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:44,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:40:44,112 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:44,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:44,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1791774700, now seen corresponding path program 1 times [2024-06-28 01:40:44,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:44,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076009654] [2024-06-28 01:40:44,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:44,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:44,813 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 01:40:44,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:44,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076009654] [2024-06-28 01:40:44,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076009654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:44,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:44,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:40:44,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098073160] [2024-06-28 01:40:44,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:44,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:40:44,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:44,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:40:44,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:40:44,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-28 01:40:44,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 77 transitions, 504 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:44,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:44,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-28 01:40:44,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:45,521 INFO L124 PetriNetUnfolderBase]: 3000/4574 cut-off events. [2024-06-28 01:40:45,522 INFO L125 PetriNetUnfolderBase]: For 10706/10706 co-relation queries the response was YES. [2024-06-28 01:40:45,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15879 conditions, 4574 events. 3000/4574 cut-off events. For 10706/10706 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 26153 event pairs, 590 based on Foata normal form. 26/4557 useless extension candidates. Maximal degree in co-relation 15854. Up to 3755 conditions per place. [2024-06-28 01:40:45,548 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 96 selfloop transitions, 34 changer transitions 0/141 dead transitions. [2024-06-28 01:40:45,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 141 transitions, 1014 flow [2024-06-28 01:40:45,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:40:45,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:40:45,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 210 transitions. [2024-06-28 01:40:45,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2024-06-28 01:40:45,550 INFO L175 Difference]: Start difference. First operand has 69 places, 77 transitions, 504 flow. Second operand 7 states and 210 transitions. [2024-06-28 01:40:45,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 141 transitions, 1014 flow [2024-06-28 01:40:45,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 141 transitions, 988 flow, removed 13 selfloop flow, removed 0 redundant places. [2024-06-28 01:40:45,563 INFO L231 Difference]: Finished difference. Result has 75 places, 78 transitions, 572 flow [2024-06-28 01:40:45,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=572, PETRI_PLACES=75, PETRI_TRANSITIONS=78} [2024-06-28 01:40:45,565 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 23 predicate places. [2024-06-28 01:40:45,565 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 78 transitions, 572 flow [2024-06-28 01:40:45,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:45,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:45,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:45,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:40:45,566 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:45,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:45,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1153744439, now seen corresponding path program 1 times [2024-06-28 01:40:45,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:45,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013597951] [2024-06-28 01:40:45,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:45,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:45,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:46,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:46,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:46,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013597951] [2024-06-28 01:40:46,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013597951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:46,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:46,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:40:46,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499923327] [2024-06-28 01:40:46,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:46,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:40:46,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:46,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:40:46,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:40:46,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:40:46,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 78 transitions, 572 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 01:40:46,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:46,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:40:46,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:46,726 INFO L124 PetriNetUnfolderBase]: 3475/5885 cut-off events. [2024-06-28 01:40:46,726 INFO L125 PetriNetUnfolderBase]: For 13782/13782 co-relation queries the response was YES. [2024-06-28 01:40:46,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18801 conditions, 5885 events. 3475/5885 cut-off events. For 13782/13782 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 38108 event pairs, 1326 based on Foata normal form. 4/5689 useless extension candidates. Maximal degree in co-relation 18772. Up to 5000 conditions per place. [2024-06-28 01:40:46,766 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 74 selfloop transitions, 15 changer transitions 0/98 dead transitions. [2024-06-28 01:40:46,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 98 transitions, 818 flow [2024-06-28 01:40:46,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:40:46,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:40:46,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-28 01:40:46,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4746376811594203 [2024-06-28 01:40:46,768 INFO L175 Difference]: Start difference. First operand has 75 places, 78 transitions, 572 flow. Second operand 6 states and 131 transitions. [2024-06-28 01:40:46,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 98 transitions, 818 flow [2024-06-28 01:40:46,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 98 transitions, 736 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 01:40:46,779 INFO L231 Difference]: Finished difference. Result has 77 places, 80 transitions, 556 flow [2024-06-28 01:40:46,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=556, PETRI_PLACES=77, PETRI_TRANSITIONS=80} [2024-06-28 01:40:46,780 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 25 predicate places. [2024-06-28 01:40:46,780 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 80 transitions, 556 flow [2024-06-28 01:40:46,780 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 01:40:46,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:46,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:46,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:40:46,781 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:46,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:46,781 INFO L85 PathProgramCache]: Analyzing trace with hash 324734291, now seen corresponding path program 1 times [2024-06-28 01:40:46,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:46,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694708470] [2024-06-28 01:40:46,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:46,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:47,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:47,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:47,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694708470] [2024-06-28 01:40:47,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694708470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:47,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:47,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:40:47,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789523589] [2024-06-28 01:40:47,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:47,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:40:47,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:47,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:40:47,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:40:47,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:40:47,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 80 transitions, 556 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 01:40:47,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:47,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:40:47,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:48,027 INFO L124 PetriNetUnfolderBase]: 3511/5768 cut-off events. [2024-06-28 01:40:48,028 INFO L125 PetriNetUnfolderBase]: For 13919/13919 co-relation queries the response was YES. [2024-06-28 01:40:48,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18496 conditions, 5768 events. 3511/5768 cut-off events. For 13919/13919 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 35874 event pairs, 1048 based on Foata normal form. 8/5578 useless extension candidates. Maximal degree in co-relation 18464. Up to 4856 conditions per place. [2024-06-28 01:40:48,059 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 83 selfloop transitions, 22 changer transitions 0/114 dead transitions. [2024-06-28 01:40:48,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 114 transitions, 908 flow [2024-06-28 01:40:48,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:40:48,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:40:48,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-28 01:40:48,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-06-28 01:40:48,060 INFO L175 Difference]: Start difference. First operand has 77 places, 80 transitions, 556 flow. Second operand 6 states and 150 transitions. [2024-06-28 01:40:48,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 114 transitions, 908 flow [2024-06-28 01:40:48,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 114 transitions, 868 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:40:48,070 INFO L231 Difference]: Finished difference. Result has 79 places, 83 transitions, 604 flow [2024-06-28 01:40:48,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=604, PETRI_PLACES=79, PETRI_TRANSITIONS=83} [2024-06-28 01:40:48,071 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 27 predicate places. [2024-06-28 01:40:48,071 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 83 transitions, 604 flow [2024-06-28 01:40:48,071 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 01:40:48,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:48,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:48,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:40:48,071 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:48,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:48,072 INFO L85 PathProgramCache]: Analyzing trace with hash -200268493, now seen corresponding path program 2 times [2024-06-28 01:40:48,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:48,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459128316] [2024-06-28 01:40:48,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:48,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:48,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:48,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:48,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459128316] [2024-06-28 01:40:48,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459128316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:48,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:48,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:40:48,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37059352] [2024-06-28 01:40:48,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:48,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:40:48,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:48,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:40:48,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:40:48,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:40:48,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 83 transitions, 604 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 01:40:48,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:48,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:40:48,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:49,339 INFO L124 PetriNetUnfolderBase]: 3488/5900 cut-off events. [2024-06-28 01:40:49,339 INFO L125 PetriNetUnfolderBase]: For 15222/15222 co-relation queries the response was YES. [2024-06-28 01:40:49,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18886 conditions, 5900 events. 3488/5900 cut-off events. For 15222/15222 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 38101 event pairs, 1319 based on Foata normal form. 4/5704 useless extension candidates. Maximal degree in co-relation 18854. Up to 5004 conditions per place. [2024-06-28 01:40:49,376 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 83 selfloop transitions, 14 changer transitions 0/106 dead transitions. [2024-06-28 01:40:49,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 106 transitions, 858 flow [2024-06-28 01:40:49,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:40:49,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:40:49,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-28 01:40:49,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5036231884057971 [2024-06-28 01:40:49,377 INFO L175 Difference]: Start difference. First operand has 79 places, 83 transitions, 604 flow. Second operand 6 states and 139 transitions. [2024-06-28 01:40:49,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 106 transitions, 858 flow [2024-06-28 01:40:49,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 106 transitions, 824 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 01:40:49,396 INFO L231 Difference]: Finished difference. Result has 82 places, 83 transitions, 606 flow [2024-06-28 01:40:49,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=606, PETRI_PLACES=82, PETRI_TRANSITIONS=83} [2024-06-28 01:40:49,397 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 30 predicate places. [2024-06-28 01:40:49,398 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 83 transitions, 606 flow [2024-06-28 01:40:49,398 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 01:40:49,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:49,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:49,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:40:49,401 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:49,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:49,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1682835891, now seen corresponding path program 1 times [2024-06-28 01:40:49,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:49,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419918292] [2024-06-28 01:40:49,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:49,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:50,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:50,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:50,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419918292] [2024-06-28 01:40:50,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419918292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:50,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:50,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:40:50,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611720899] [2024-06-28 01:40:50,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:50,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:40:50,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:50,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:40:50,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:40:50,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:40:50,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 83 transitions, 606 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:50,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:50,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:40:50,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:51,577 INFO L124 PetriNetUnfolderBase]: 4266/7115 cut-off events. [2024-06-28 01:40:51,577 INFO L125 PetriNetUnfolderBase]: For 19379/19379 co-relation queries the response was YES. [2024-06-28 01:40:51,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22484 conditions, 7115 events. 4266/7115 cut-off events. For 19379/19379 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 45779 event pairs, 1632 based on Foata normal form. 4/6877 useless extension candidates. Maximal degree in co-relation 22451. Up to 6057 conditions per place. [2024-06-28 01:40:51,622 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 96 selfloop transitions, 21 changer transitions 0/125 dead transitions. [2024-06-28 01:40:51,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 125 transitions, 1000 flow [2024-06-28 01:40:51,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:40:51,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:40:51,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-28 01:40:51,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4906832298136646 [2024-06-28 01:40:51,623 INFO L175 Difference]: Start difference. First operand has 82 places, 83 transitions, 606 flow. Second operand 7 states and 158 transitions. [2024-06-28 01:40:51,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 125 transitions, 1000 flow [2024-06-28 01:40:51,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 125 transitions, 930 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 01:40:51,640 INFO L231 Difference]: Finished difference. Result has 84 places, 90 transitions, 665 flow [2024-06-28 01:40:51,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=665, PETRI_PLACES=84, PETRI_TRANSITIONS=90} [2024-06-28 01:40:51,641 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 32 predicate places. [2024-06-28 01:40:51,642 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 90 transitions, 665 flow [2024-06-28 01:40:51,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:51,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:51,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:51,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:40:51,642 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:51,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:51,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1437092905, now seen corresponding path program 1 times [2024-06-28 01:40:51,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:51,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564711179] [2024-06-28 01:40:51,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:51,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:52,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:52,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:52,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564711179] [2024-06-28 01:40:52,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564711179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:52,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:52,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:40:52,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768495009] [2024-06-28 01:40:52,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:52,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:40:52,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:52,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:40:52,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:40:52,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:40:52,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 90 transitions, 665 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:52,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:52,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:40:52,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:53,021 INFO L124 PetriNetUnfolderBase]: 4257/6823 cut-off events. [2024-06-28 01:40:53,021 INFO L125 PetriNetUnfolderBase]: For 21327/21327 co-relation queries the response was YES. [2024-06-28 01:40:53,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22931 conditions, 6823 events. 4257/6823 cut-off events. For 21327/21327 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 41745 event pairs, 1676 based on Foata normal form. 3/6655 useless extension candidates. Maximal degree in co-relation 22897. Up to 6097 conditions per place. [2024-06-28 01:40:53,055 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 88 selfloop transitions, 13 changer transitions 0/109 dead transitions. [2024-06-28 01:40:53,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 109 transitions, 933 flow [2024-06-28 01:40:53,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:40:53,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:40:53,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 123 transitions. [2024-06-28 01:40:53,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44565217391304346 [2024-06-28 01:40:53,058 INFO L175 Difference]: Start difference. First operand has 84 places, 90 transitions, 665 flow. Second operand 6 states and 123 transitions. [2024-06-28 01:40:53,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 109 transitions, 933 flow [2024-06-28 01:40:53,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 109 transitions, 884 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:40:53,075 INFO L231 Difference]: Finished difference. Result has 86 places, 93 transitions, 681 flow [2024-06-28 01:40:53,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=681, PETRI_PLACES=86, PETRI_TRANSITIONS=93} [2024-06-28 01:40:53,076 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 34 predicate places. [2024-06-28 01:40:53,076 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 93 transitions, 681 flow [2024-06-28 01:40:53,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:53,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:53,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:53,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:40:53,077 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:53,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:53,078 INFO L85 PathProgramCache]: Analyzing trace with hash -518667756, now seen corresponding path program 1 times [2024-06-28 01:40:53,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:53,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721955412] [2024-06-28 01:40:53,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:53,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:53,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:53,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:53,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721955412] [2024-06-28 01:40:53,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721955412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:53,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:53,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:40:53,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730460977] [2024-06-28 01:40:53,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:53,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:40:53,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:53,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:40:53,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:40:53,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:40:53,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 93 transitions, 681 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:53,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:53,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:40:53,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:54,640 INFO L124 PetriNetUnfolderBase]: 4126/6527 cut-off events. [2024-06-28 01:40:54,640 INFO L125 PetriNetUnfolderBase]: For 23238/23238 co-relation queries the response was YES. [2024-06-28 01:40:54,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22852 conditions, 6527 events. 4126/6527 cut-off events. For 23238/23238 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 39866 event pairs, 1052 based on Foata normal form. 4/6371 useless extension candidates. Maximal degree in co-relation 22817. Up to 5538 conditions per place. [2024-06-28 01:40:54,715 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 109 selfloop transitions, 31 changer transitions 0/150 dead transitions. [2024-06-28 01:40:54,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 150 transitions, 1149 flow [2024-06-28 01:40:54,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:40:54,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:40:54,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 01:40:54,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-06-28 01:40:54,718 INFO L175 Difference]: Start difference. First operand has 86 places, 93 transitions, 681 flow. Second operand 8 states and 200 transitions. [2024-06-28 01:40:54,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 150 transitions, 1149 flow [2024-06-28 01:40:54,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 150 transitions, 1110 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 01:40:54,741 INFO L231 Difference]: Finished difference. Result has 91 places, 100 transitions, 776 flow [2024-06-28 01:40:54,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=776, PETRI_PLACES=91, PETRI_TRANSITIONS=100} [2024-06-28 01:40:54,743 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 39 predicate places. [2024-06-28 01:40:54,743 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 100 transitions, 776 flow [2024-06-28 01:40:54,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:54,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:54,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:54,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:40:54,744 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:54,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:54,744 INFO L85 PathProgramCache]: Analyzing trace with hash 827357134, now seen corresponding path program 1 times [2024-06-28 01:40:54,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:54,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239403725] [2024-06-28 01:40:54,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:54,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:55,459 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 01:40:55,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:55,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239403725] [2024-06-28 01:40:55,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239403725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:55,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:55,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:40:55,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727700557] [2024-06-28 01:40:55,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:55,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:40:55,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:55,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:40:55,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:40:55,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:40:55,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 100 transitions, 776 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:55,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:55,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:40:55,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:56,331 INFO L124 PetriNetUnfolderBase]: 4341/6760 cut-off events. [2024-06-28 01:40:56,332 INFO L125 PetriNetUnfolderBase]: For 28055/28055 co-relation queries the response was YES. [2024-06-28 01:40:56,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25231 conditions, 6760 events. 4341/6760 cut-off events. For 28055/28055 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 40302 event pairs, 1640 based on Foata normal form. 2/6636 useless extension candidates. Maximal degree in co-relation 25194. Up to 6163 conditions per place. [2024-06-28 01:40:56,383 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 109 selfloop transitions, 24 changer transitions 0/141 dead transitions. [2024-06-28 01:40:56,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 141 transitions, 1222 flow [2024-06-28 01:40:56,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:40:56,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:40:56,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-28 01:40:56,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484472049689441 [2024-06-28 01:40:56,385 INFO L175 Difference]: Start difference. First operand has 91 places, 100 transitions, 776 flow. Second operand 7 states and 156 transitions. [2024-06-28 01:40:56,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 141 transitions, 1222 flow [2024-06-28 01:40:56,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 141 transitions, 1150 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 01:40:56,514 INFO L231 Difference]: Finished difference. Result has 95 places, 112 transitions, 905 flow [2024-06-28 01:40:56,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=905, PETRI_PLACES=95, PETRI_TRANSITIONS=112} [2024-06-28 01:40:56,515 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 43 predicate places. [2024-06-28 01:40:56,515 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 112 transitions, 905 flow [2024-06-28 01:40:56,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:56,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:56,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:56,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:40:56,516 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:56,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:56,517 INFO L85 PathProgramCache]: Analyzing trace with hash 990344027, now seen corresponding path program 1 times [2024-06-28 01:40:56,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:56,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568201829] [2024-06-28 01:40:56,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:56,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:57,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:57,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:57,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568201829] [2024-06-28 01:40:57,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568201829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:57,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:57,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:40:57,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14507551] [2024-06-28 01:40:57,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:57,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:40:57,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:57,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:40:57,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:40:57,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:40:57,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 112 transitions, 905 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:57,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:57,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:40:57,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:58,488 INFO L124 PetriNetUnfolderBase]: 4395/6648 cut-off events. [2024-06-28 01:40:58,508 INFO L125 PetriNetUnfolderBase]: For 32784/32784 co-relation queries the response was YES. [2024-06-28 01:40:58,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25857 conditions, 6648 events. 4395/6648 cut-off events. For 32784/32784 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 38739 event pairs, 541 based on Foata normal form. 16/6599 useless extension candidates. Maximal degree in co-relation 25817. Up to 4984 conditions per place. [2024-06-28 01:40:58,593 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 116 selfloop transitions, 54 changer transitions 0/181 dead transitions. [2024-06-28 01:40:58,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 181 transitions, 1599 flow [2024-06-28 01:40:58,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:40:58,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:40:58,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-28 01:40:58,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5679347826086957 [2024-06-28 01:40:58,598 INFO L175 Difference]: Start difference. First operand has 95 places, 112 transitions, 905 flow. Second operand 8 states and 209 transitions. [2024-06-28 01:40:58,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 181 transitions, 1599 flow [2024-06-28 01:40:58,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 181 transitions, 1564 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 01:40:58,696 INFO L231 Difference]: Finished difference. Result has 101 places, 117 transitions, 1060 flow [2024-06-28 01:40:58,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1060, PETRI_PLACES=101, PETRI_TRANSITIONS=117} [2024-06-28 01:40:58,697 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 49 predicate places. [2024-06-28 01:40:58,697 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 117 transitions, 1060 flow [2024-06-28 01:40:58,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:58,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:58,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:58,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:40:58,698 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:58,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:58,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1775349243, now seen corresponding path program 2 times [2024-06-28 01:40:58,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:58,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997394874] [2024-06-28 01:40:58,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:58,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:59,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:59,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:59,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997394874] [2024-06-28 01:40:59,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997394874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:59,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:59,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:40:59,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948198128] [2024-06-28 01:40:59,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:59,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:40:59,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:59,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:40:59,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:40:59,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:40:59,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 117 transitions, 1060 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:59,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:59,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:40:59,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:00,811 INFO L124 PetriNetUnfolderBase]: 4920/7489 cut-off events. [2024-06-28 01:41:00,812 INFO L125 PetriNetUnfolderBase]: For 43386/43386 co-relation queries the response was YES. [2024-06-28 01:41:00,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31378 conditions, 7489 events. 4920/7489 cut-off events. For 43386/43386 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 45015 event pairs, 1133 based on Foata normal form. 20/7428 useless extension candidates. Maximal degree in co-relation 31336. Up to 6312 conditions per place. [2024-06-28 01:41:00,863 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 126 selfloop transitions, 60 changer transitions 0/197 dead transitions. [2024-06-28 01:41:00,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 197 transitions, 1924 flow [2024-06-28 01:41:00,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:41:00,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:41:00,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-28 01:41:00,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5169082125603864 [2024-06-28 01:41:00,866 INFO L175 Difference]: Start difference. First operand has 101 places, 117 transitions, 1060 flow. Second operand 9 states and 214 transitions. [2024-06-28 01:41:00,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 197 transitions, 1924 flow [2024-06-28 01:41:00,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 197 transitions, 1846 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 01:41:00,940 INFO L231 Difference]: Finished difference. Result has 109 places, 138 transitions, 1402 flow [2024-06-28 01:41:00,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1402, PETRI_PLACES=109, PETRI_TRANSITIONS=138} [2024-06-28 01:41:00,941 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 57 predicate places. [2024-06-28 01:41:00,941 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 138 transitions, 1402 flow [2024-06-28 01:41:00,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:00,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:00,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:00,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:41:00,942 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:00,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:00,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1778145753, now seen corresponding path program 3 times [2024-06-28 01:41:00,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:00,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682313968] [2024-06-28 01:41:00,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:00,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:01,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:01,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:01,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682313968] [2024-06-28 01:41:01,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682313968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:01,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:01,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:01,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032713468] [2024-06-28 01:41:01,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:01,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:01,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:01,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:01,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:01,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:41:01,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 138 transitions, 1402 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:01,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:01,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:41:01,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:02,824 INFO L124 PetriNetUnfolderBase]: 5143/7783 cut-off events. [2024-06-28 01:41:02,824 INFO L125 PetriNetUnfolderBase]: For 48982/48991 co-relation queries the response was YES. [2024-06-28 01:41:02,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34290 conditions, 7783 events. 5143/7783 cut-off events. For 48982/48991 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 46623 event pairs, 1065 based on Foata normal form. 26/7751 useless extension candidates. Maximal degree in co-relation 34244. Up to 6580 conditions per place. [2024-06-28 01:41:02,878 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 127 selfloop transitions, 63 changer transitions 0/201 dead transitions. [2024-06-28 01:41:02,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 201 transitions, 2111 flow [2024-06-28 01:41:02,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:02,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:02,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 01:41:02,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5489130434782609 [2024-06-28 01:41:02,880 INFO L175 Difference]: Start difference. First operand has 109 places, 138 transitions, 1402 flow. Second operand 8 states and 202 transitions. [2024-06-28 01:41:02,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 201 transitions, 2111 flow [2024-06-28 01:41:02,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 201 transitions, 2042 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 01:41:02,970 INFO L231 Difference]: Finished difference. Result has 116 places, 146 transitions, 1645 flow [2024-06-28 01:41:02,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1336, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1645, PETRI_PLACES=116, PETRI_TRANSITIONS=146} [2024-06-28 01:41:02,971 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 64 predicate places. [2024-06-28 01:41:02,971 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 146 transitions, 1645 flow [2024-06-28 01:41:02,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:02,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:02,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:02,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:41:02,972 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:02,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:02,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1105938005, now seen corresponding path program 1 times [2024-06-28 01:41:02,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:02,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35610968] [2024-06-28 01:41:02,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:02,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:03,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:03,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:03,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35610968] [2024-06-28 01:41:03,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35610968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:03,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:03,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:41:03,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964935307] [2024-06-28 01:41:03,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:03,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:41:03,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:03,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:41:03,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:41:03,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:03,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 146 transitions, 1645 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 01:41:03,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:03,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:03,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:05,118 INFO L124 PetriNetUnfolderBase]: 5688/9022 cut-off events. [2024-06-28 01:41:05,118 INFO L125 PetriNetUnfolderBase]: For 59723/59738 co-relation queries the response was YES. [2024-06-28 01:41:05,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39981 conditions, 9022 events. 5688/9022 cut-off events. For 59723/59738 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 57226 event pairs, 1443 based on Foata normal form. 18/8801 useless extension candidates. Maximal degree in co-relation 39930. Up to 7583 conditions per place. [2024-06-28 01:41:05,180 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 151 selfloop transitions, 43 changer transitions 0/202 dead transitions. [2024-06-28 01:41:05,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 202 transitions, 2287 flow [2024-06-28 01:41:05,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:05,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:05,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 01:41:05,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190217391304348 [2024-06-28 01:41:05,182 INFO L175 Difference]: Start difference. First operand has 116 places, 146 transitions, 1645 flow. Second operand 8 states and 191 transitions. [2024-06-28 01:41:05,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 202 transitions, 2287 flow [2024-06-28 01:41:05,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 202 transitions, 2196 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 01:41:05,306 INFO L231 Difference]: Finished difference. Result has 122 places, 155 transitions, 1779 flow [2024-06-28 01:41:05,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1556, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1779, PETRI_PLACES=122, PETRI_TRANSITIONS=155} [2024-06-28 01:41:05,307 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 70 predicate places. [2024-06-28 01:41:05,307 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 155 transitions, 1779 flow [2024-06-28 01:41:05,307 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 01:41:05,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:05,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:05,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:41:05,307 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:05,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:05,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1945521177, now seen corresponding path program 1 times [2024-06-28 01:41:05,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:05,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470354373] [2024-06-28 01:41:05,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:05,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:05,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:05,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:05,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470354373] [2024-06-28 01:41:05,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470354373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:05,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:05,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:05,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491014376] [2024-06-28 01:41:05,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:05,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:05,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:05,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:05,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:05,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:05,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 155 transitions, 1779 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:05,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:06,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:06,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:07,005 INFO L124 PetriNetUnfolderBase]: 5784/9133 cut-off events. [2024-06-28 01:41:07,005 INFO L125 PetriNetUnfolderBase]: For 62159/62167 co-relation queries the response was YES. [2024-06-28 01:41:07,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41378 conditions, 9133 events. 5784/9133 cut-off events. For 62159/62167 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 57951 event pairs, 1631 based on Foata normal form. 11/8910 useless extension candidates. Maximal degree in co-relation 41325. Up to 8253 conditions per place. [2024-06-28 01:41:07,077 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 166 selfloop transitions, 20 changer transitions 0/194 dead transitions. [2024-06-28 01:41:07,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 194 transitions, 2339 flow [2024-06-28 01:41:07,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:41:07,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:41:07,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 01:41:07,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2024-06-28 01:41:07,078 INFO L175 Difference]: Start difference. First operand has 122 places, 155 transitions, 1779 flow. Second operand 6 states and 140 transitions. [2024-06-28 01:41:07,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 194 transitions, 2339 flow [2024-06-28 01:41:07,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 194 transitions, 2238 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:07,223 INFO L231 Difference]: Finished difference. Result has 124 places, 165 transitions, 1824 flow [2024-06-28 01:41:07,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1678, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1824, PETRI_PLACES=124, PETRI_TRANSITIONS=165} [2024-06-28 01:41:07,224 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 72 predicate places. [2024-06-28 01:41:07,224 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 165 transitions, 1824 flow [2024-06-28 01:41:07,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:07,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:07,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:07,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:41:07,225 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:07,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:07,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1634294571, now seen corresponding path program 2 times [2024-06-28 01:41:07,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:07,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296680667] [2024-06-28 01:41:07,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:07,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:08,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:08,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:08,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296680667] [2024-06-28 01:41:08,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296680667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:08,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:08,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:41:08,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951311240] [2024-06-28 01:41:08,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:08,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:41:08,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:08,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:41:08,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:41:08,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:08,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 165 transitions, 1824 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 01:41:08,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:08,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:08,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:09,378 INFO L124 PetriNetUnfolderBase]: 5821/9247 cut-off events. [2024-06-28 01:41:09,378 INFO L125 PetriNetUnfolderBase]: For 70308/70308 co-relation queries the response was YES. [2024-06-28 01:41:09,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42645 conditions, 9247 events. 5821/9247 cut-off events. For 70308/70308 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 59129 event pairs, 2088 based on Foata normal form. 4/9054 useless extension candidates. Maximal degree in co-relation 42590. Up to 8279 conditions per place. [2024-06-28 01:41:09,462 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 178 selfloop transitions, 25 changer transitions 0/211 dead transitions. [2024-06-28 01:41:09,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 211 transitions, 2416 flow [2024-06-28 01:41:09,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:09,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:09,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-28 01:41:09,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49184782608695654 [2024-06-28 01:41:09,463 INFO L175 Difference]: Start difference. First operand has 124 places, 165 transitions, 1824 flow. Second operand 8 states and 181 transitions. [2024-06-28 01:41:09,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 211 transitions, 2416 flow [2024-06-28 01:41:09,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 211 transitions, 2390 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-28 01:41:09,618 INFO L231 Difference]: Finished difference. Result has 132 places, 170 transitions, 1933 flow [2024-06-28 01:41:09,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1798, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1933, PETRI_PLACES=132, PETRI_TRANSITIONS=170} [2024-06-28 01:41:09,618 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 80 predicate places. [2024-06-28 01:41:09,619 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 170 transitions, 1933 flow [2024-06-28 01:41:09,619 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 01:41:09,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:09,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:09,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:41:09,619 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:09,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:09,620 INFO L85 PathProgramCache]: Analyzing trace with hash -2006858831, now seen corresponding path program 3 times [2024-06-28 01:41:09,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:09,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617885284] [2024-06-28 01:41:09,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:09,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:10,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:10,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:10,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617885284] [2024-06-28 01:41:10,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617885284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:10,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:10,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:41:10,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443289517] [2024-06-28 01:41:10,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:10,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:41:10,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:10,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:41:10,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:41:10,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:10,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 170 transitions, 1933 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 01:41:10,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:10,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:10,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:11,700 INFO L124 PetriNetUnfolderBase]: 5858/9318 cut-off events. [2024-06-28 01:41:11,700 INFO L125 PetriNetUnfolderBase]: For 77773/77773 co-relation queries the response was YES. [2024-06-28 01:41:11,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43988 conditions, 9318 events. 5858/9318 cut-off events. For 77773/77773 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 59737 event pairs, 2107 based on Foata normal form. 4/9121 useless extension candidates. Maximal degree in co-relation 43929. Up to 8383 conditions per place. [2024-06-28 01:41:11,783 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 182 selfloop transitions, 20 changer transitions 0/210 dead transitions. [2024-06-28 01:41:11,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 210 transitions, 2475 flow [2024-06-28 01:41:11,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:11,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:11,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-06-28 01:41:11,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48097826086956524 [2024-06-28 01:41:11,784 INFO L175 Difference]: Start difference. First operand has 132 places, 170 transitions, 1933 flow. Second operand 8 states and 177 transitions. [2024-06-28 01:41:11,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 210 transitions, 2475 flow [2024-06-28 01:41:11,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 210 transitions, 2396 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:11,927 INFO L231 Difference]: Finished difference. Result has 135 places, 172 transitions, 1937 flow [2024-06-28 01:41:11,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1854, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1937, PETRI_PLACES=135, PETRI_TRANSITIONS=172} [2024-06-28 01:41:11,928 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 83 predicate places. [2024-06-28 01:41:11,928 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 172 transitions, 1937 flow [2024-06-28 01:41:11,928 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 01:41:11,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:11,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:11,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:41:11,929 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:11,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:11,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1997365391, now seen corresponding path program 4 times [2024-06-28 01:41:11,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:11,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13062822] [2024-06-28 01:41:11,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:11,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:12,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:12,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:12,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13062822] [2024-06-28 01:41:12,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13062822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:12,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:12,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:41:12,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121624950] [2024-06-28 01:41:12,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:12,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:41:12,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:12,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:41:12,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:41:12,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:12,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 172 transitions, 1937 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 01:41:12,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:12,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:12,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:14,227 INFO L124 PetriNetUnfolderBase]: 5903/9414 cut-off events. [2024-06-28 01:41:14,228 INFO L125 PetriNetUnfolderBase]: For 83886/83886 co-relation queries the response was YES. [2024-06-28 01:41:14,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44693 conditions, 9414 events. 5903/9414 cut-off events. For 83886/83886 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 60673 event pairs, 2041 based on Foata normal form. 4/9208 useless extension candidates. Maximal degree in co-relation 44633. Up to 8414 conditions per place. [2024-06-28 01:41:14,324 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 182 selfloop transitions, 28 changer transitions 0/218 dead transitions. [2024-06-28 01:41:14,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 218 transitions, 2517 flow [2024-06-28 01:41:14,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:14,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:14,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-06-28 01:41:14,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-06-28 01:41:14,326 INFO L175 Difference]: Start difference. First operand has 135 places, 172 transitions, 1937 flow. Second operand 8 states and 180 transitions. [2024-06-28 01:41:14,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 218 transitions, 2517 flow [2024-06-28 01:41:14,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 218 transitions, 2453 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:14,484 INFO L231 Difference]: Finished difference. Result has 139 places, 177 transitions, 2007 flow [2024-06-28 01:41:14,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1873, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2007, PETRI_PLACES=139, PETRI_TRANSITIONS=177} [2024-06-28 01:41:14,485 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 87 predicate places. [2024-06-28 01:41:14,485 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 177 transitions, 2007 flow [2024-06-28 01:41:14,485 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 01:41:14,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:14,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:14,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:41:14,486 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:14,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:14,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1997691139, now seen corresponding path program 1 times [2024-06-28 01:41:14,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:14,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154849454] [2024-06-28 01:41:14,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:14,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:15,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:15,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:15,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154849454] [2024-06-28 01:41:15,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154849454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:15,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:15,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:15,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402375674] [2024-06-28 01:41:15,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:15,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:15,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:15,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:15,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:15,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:15,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 177 transitions, 2007 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 01:41:15,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:15,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:15,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:16,477 INFO L124 PetriNetUnfolderBase]: 5883/8787 cut-off events. [2024-06-28 01:41:16,477 INFO L125 PetriNetUnfolderBase]: For 87603/87614 co-relation queries the response was YES. [2024-06-28 01:41:16,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44615 conditions, 8787 events. 5883/8787 cut-off events. For 87603/87614 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 51349 event pairs, 1263 based on Foata normal form. 10/8729 useless extension candidates. Maximal degree in co-relation 44553. Up to 7822 conditions per place. [2024-06-28 01:41:16,556 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 142 selfloop transitions, 63 changer transitions 0/213 dead transitions. [2024-06-28 01:41:16,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 213 transitions, 2543 flow [2024-06-28 01:41:16,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:41:16,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:41:16,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-28 01:41:16,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5471014492753623 [2024-06-28 01:41:16,558 INFO L175 Difference]: Start difference. First operand has 139 places, 177 transitions, 2007 flow. Second operand 6 states and 151 transitions. [2024-06-28 01:41:16,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 213 transitions, 2543 flow [2024-06-28 01:41:16,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 213 transitions, 2435 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:16,781 INFO L231 Difference]: Finished difference. Result has 140 places, 177 transitions, 2049 flow [2024-06-28 01:41:16,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1899, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2049, PETRI_PLACES=140, PETRI_TRANSITIONS=177} [2024-06-28 01:41:16,782 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 88 predicate places. [2024-06-28 01:41:16,782 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 177 transitions, 2049 flow [2024-06-28 01:41:16,782 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 01:41:16,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:16,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:16,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:41:16,783 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:16,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:16,784 INFO L85 PathProgramCache]: Analyzing trace with hash -980440719, now seen corresponding path program 5 times [2024-06-28 01:41:16,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:16,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202250413] [2024-06-28 01:41:16,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:16,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:17,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:17,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:17,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202250413] [2024-06-28 01:41:17,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202250413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:17,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:17,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:41:17,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207382623] [2024-06-28 01:41:17,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:17,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:41:17,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:17,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:41:17,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:41:17,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:17,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 177 transitions, 2049 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 01:41:17,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:17,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:17,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:19,207 INFO L124 PetriNetUnfolderBase]: 5893/9380 cut-off events. [2024-06-28 01:41:19,207 INFO L125 PetriNetUnfolderBase]: For 97377/97377 co-relation queries the response was YES. [2024-06-28 01:41:19,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45934 conditions, 9380 events. 5893/9380 cut-off events. For 97377/97377 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 60288 event pairs, 2079 based on Foata normal form. 4/9176 useless extension candidates. Maximal degree in co-relation 45871. Up to 8338 conditions per place. [2024-06-28 01:41:19,288 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 179 selfloop transitions, 37 changer transitions 0/224 dead transitions. [2024-06-28 01:41:19,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 224 transitions, 2694 flow [2024-06-28 01:41:19,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:41:19,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:41:19,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 193 transitions. [2024-06-28 01:41:19,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46618357487922707 [2024-06-28 01:41:19,290 INFO L175 Difference]: Start difference. First operand has 140 places, 177 transitions, 2049 flow. Second operand 9 states and 193 transitions. [2024-06-28 01:41:19,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 224 transitions, 2694 flow [2024-06-28 01:41:19,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 224 transitions, 2560 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:19,463 INFO L231 Difference]: Finished difference. Result has 145 places, 182 transitions, 2115 flow [2024-06-28 01:41:19,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1921, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2115, PETRI_PLACES=145, PETRI_TRANSITIONS=182} [2024-06-28 01:41:19,464 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 93 predicate places. [2024-06-28 01:41:19,464 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 182 transitions, 2115 flow [2024-06-28 01:41:19,464 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 01:41:19,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:19,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:19,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:41:19,465 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:19,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:19,467 INFO L85 PathProgramCache]: Analyzing trace with hash -2011031181, now seen corresponding path program 2 times [2024-06-28 01:41:19,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:19,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890065332] [2024-06-28 01:41:19,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:19,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:19,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:19,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:19,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:19,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890065332] [2024-06-28 01:41:19,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890065332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:19,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:19,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:41:19,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966632971] [2024-06-28 01:41:19,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:19,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:41:19,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:19,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:41:19,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:41:20,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:20,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 182 transitions, 2115 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 01:41:20,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:20,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:20,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:21,214 INFO L124 PetriNetUnfolderBase]: 5884/9363 cut-off events. [2024-06-28 01:41:21,214 INFO L125 PetriNetUnfolderBase]: For 101317/101317 co-relation queries the response was YES. [2024-06-28 01:41:21,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45968 conditions, 9363 events. 5884/9363 cut-off events. For 101317/101317 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 60083 event pairs, 2107 based on Foata normal form. 3/9161 useless extension candidates. Maximal degree in co-relation 45903. Up to 8466 conditions per place. [2024-06-28 01:41:21,289 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 178 selfloop transitions, 14 changer transitions 0/200 dead transitions. [2024-06-28 01:41:21,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 200 transitions, 2551 flow [2024-06-28 01:41:21,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:41:21,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:41:21,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-06-28 01:41:21,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463768115942029 [2024-06-28 01:41:21,290 INFO L175 Difference]: Start difference. First operand has 145 places, 182 transitions, 2115 flow. Second operand 6 states and 128 transitions. [2024-06-28 01:41:21,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 200 transitions, 2551 flow [2024-06-28 01:41:21,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 200 transitions, 2436 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 01:41:21,476 INFO L231 Difference]: Finished difference. Result has 145 places, 182 transitions, 2034 flow [2024-06-28 01:41:21,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2000, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2034, PETRI_PLACES=145, PETRI_TRANSITIONS=182} [2024-06-28 01:41:21,476 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 93 predicate places. [2024-06-28 01:41:21,477 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 182 transitions, 2034 flow [2024-06-28 01:41:21,477 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 01:41:21,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:21,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:21,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:41:21,477 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:21,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:21,478 INFO L85 PathProgramCache]: Analyzing trace with hash 310300425, now seen corresponding path program 4 times [2024-06-28 01:41:21,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:21,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726849000] [2024-06-28 01:41:21,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:21,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:22,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:22,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:22,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726849000] [2024-06-28 01:41:22,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726849000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:22,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:22,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:22,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460655274] [2024-06-28 01:41:22,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:22,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:22,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:22,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:22,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:22,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:41:22,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 182 transitions, 2034 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:22,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:22,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:41:22,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:23,914 INFO L124 PetriNetUnfolderBase]: 6379/10634 cut-off events. [2024-06-28 01:41:23,914 INFO L125 PetriNetUnfolderBase]: For 108061/108067 co-relation queries the response was YES. [2024-06-28 01:41:23,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51253 conditions, 10634 events. 6379/10634 cut-off events. For 108061/108067 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 73779 event pairs, 1685 based on Foata normal form. 24/10327 useless extension candidates. Maximal degree in co-relation 51187. Up to 7870 conditions per place. [2024-06-28 01:41:24,018 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 217 selfloop transitions, 98 changer transitions 0/328 dead transitions. [2024-06-28 01:41:24,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 328 transitions, 4143 flow [2024-06-28 01:41:24,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:41:24,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:41:24,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-28 01:41:24,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5507246376811594 [2024-06-28 01:41:24,020 INFO L175 Difference]: Start difference. First operand has 145 places, 182 transitions, 2034 flow. Second operand 9 states and 228 transitions. [2024-06-28 01:41:24,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 328 transitions, 4143 flow [2024-06-28 01:41:24,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 328 transitions, 4085 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:24,248 INFO L231 Difference]: Finished difference. Result has 153 places, 248 transitions, 3349 flow [2024-06-28 01:41:24,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1982, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3349, PETRI_PLACES=153, PETRI_TRANSITIONS=248} [2024-06-28 01:41:24,249 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 101 predicate places. [2024-06-28 01:41:24,249 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 248 transitions, 3349 flow [2024-06-28 01:41:24,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:24,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:24,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:24,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:41:24,250 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:24,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:24,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1928743603, now seen corresponding path program 5 times [2024-06-28 01:41:24,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:24,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147207386] [2024-06-28 01:41:24,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:24,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:24,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:24,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:24,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147207386] [2024-06-28 01:41:24,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147207386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:24,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:24,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:24,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573894566] [2024-06-28 01:41:24,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:24,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:24,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:24,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:24,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:24,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:41:24,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 248 transitions, 3349 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 01:41:24,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:24,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:41:24,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:26,679 INFO L124 PetriNetUnfolderBase]: 7300/11538 cut-off events. [2024-06-28 01:41:26,680 INFO L125 PetriNetUnfolderBase]: For 132901/132911 co-relation queries the response was YES. [2024-06-28 01:41:26,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63090 conditions, 11538 events. 7300/11538 cut-off events. For 132901/132911 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 76395 event pairs, 1427 based on Foata normal form. 40/11421 useless extension candidates. Maximal degree in co-relation 63020. Up to 7597 conditions per place. [2024-06-28 01:41:26,826 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 169 selfloop transitions, 172 changer transitions 0/354 dead transitions. [2024-06-28 01:41:26,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 354 transitions, 5063 flow [2024-06-28 01:41:26,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:26,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:26,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-28 01:41:26,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5652173913043478 [2024-06-28 01:41:26,828 INFO L175 Difference]: Start difference. First operand has 153 places, 248 transitions, 3349 flow. Second operand 8 states and 208 transitions. [2024-06-28 01:41:26,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 354 transitions, 5063 flow [2024-06-28 01:41:27,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 354 transitions, 5007 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-28 01:41:27,379 INFO L231 Difference]: Finished difference. Result has 162 places, 291 transitions, 4474 flow [2024-06-28 01:41:27,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3293, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4474, PETRI_PLACES=162, PETRI_TRANSITIONS=291} [2024-06-28 01:41:27,380 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 110 predicate places. [2024-06-28 01:41:27,380 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 291 transitions, 4474 flow [2024-06-28 01:41:27,380 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 01:41:27,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:27,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:27,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:41:27,381 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:27,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:27,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1026725272, now seen corresponding path program 1 times [2024-06-28 01:41:27,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:27,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605648165] [2024-06-28 01:41:27,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:27,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:27,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:27,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:27,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:27,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605648165] [2024-06-28 01:41:27,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605648165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:27,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:27,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:27,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484381362] [2024-06-28 01:41:27,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:27,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:27,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:27,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:27,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:27,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:27,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 291 transitions, 4474 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:27,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:27,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:27,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:29,992 INFO L124 PetriNetUnfolderBase]: 8066/13019 cut-off events. [2024-06-28 01:41:29,993 INFO L125 PetriNetUnfolderBase]: For 148659/148659 co-relation queries the response was YES. [2024-06-28 01:41:30,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73447 conditions, 13019 events. 8066/13019 cut-off events. For 148659/148659 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 89185 event pairs, 2734 based on Foata normal form. 3/12687 useless extension candidates. Maximal degree in co-relation 73372. Up to 11446 conditions per place. [2024-06-28 01:41:30,212 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 303 selfloop transitions, 35 changer transitions 0/346 dead transitions. [2024-06-28 01:41:30,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 346 transitions, 5586 flow [2024-06-28 01:41:30,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:30,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:30,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-28 01:41:30,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-28 01:41:30,214 INFO L175 Difference]: Start difference. First operand has 162 places, 291 transitions, 4474 flow. Second operand 8 states and 176 transitions. [2024-06-28 01:41:30,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 346 transitions, 5586 flow [2024-06-28 01:41:30,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 346 transitions, 5377 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-28 01:41:30,768 INFO L231 Difference]: Finished difference. Result has 169 places, 309 transitions, 4572 flow [2024-06-28 01:41:30,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4275, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4572, PETRI_PLACES=169, PETRI_TRANSITIONS=309} [2024-06-28 01:41:30,769 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 117 predicate places. [2024-06-28 01:41:30,769 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 309 transitions, 4572 flow [2024-06-28 01:41:30,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:30,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:30,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:30,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:41:30,769 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:30,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:30,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1954071790, now seen corresponding path program 2 times [2024-06-28 01:41:30,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:30,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198462037] [2024-06-28 01:41:30,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:30,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:30,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:31,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:31,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:31,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198462037] [2024-06-28 01:41:31,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198462037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:31,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:31,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:31,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308390538] [2024-06-28 01:41:31,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:31,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:31,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:31,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:31,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:31,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:31,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 309 transitions, 4572 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:31,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:31,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:31,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:33,266 INFO L124 PetriNetUnfolderBase]: 8128/13128 cut-off events. [2024-06-28 01:41:33,266 INFO L125 PetriNetUnfolderBase]: For 150445/150445 co-relation queries the response was YES. [2024-06-28 01:41:33,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73839 conditions, 13128 events. 8128/13128 cut-off events. For 150445/150445 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 90240 event pairs, 2745 based on Foata normal form. 3/12790 useless extension candidates. Maximal degree in co-relation 73761. Up to 11496 conditions per place. [2024-06-28 01:41:33,440 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 299 selfloop transitions, 38 changer transitions 0/345 dead transitions. [2024-06-28 01:41:33,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 345 transitions, 5509 flow [2024-06-28 01:41:33,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:41:33,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:41:33,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 01:41:33,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2024-06-28 01:41:33,441 INFO L175 Difference]: Start difference. First operand has 169 places, 309 transitions, 4572 flow. Second operand 6 states and 140 transitions. [2024-06-28 01:41:33,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 345 transitions, 5509 flow [2024-06-28 01:41:33,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 345 transitions, 5446 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-28 01:41:33,934 INFO L231 Difference]: Finished difference. Result has 172 places, 314 transitions, 4662 flow [2024-06-28 01:41:33,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4521, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4662, PETRI_PLACES=172, PETRI_TRANSITIONS=314} [2024-06-28 01:41:33,934 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 120 predicate places. [2024-06-28 01:41:33,934 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 314 transitions, 4662 flow [2024-06-28 01:41:33,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:33,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:33,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:33,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:41:33,935 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:33,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:33,936 INFO L85 PathProgramCache]: Analyzing trace with hash -845494454, now seen corresponding path program 3 times [2024-06-28 01:41:33,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:33,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463080409] [2024-06-28 01:41:33,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:33,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:34,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:34,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:34,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463080409] [2024-06-28 01:41:34,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463080409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:34,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:34,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:34,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346672416] [2024-06-28 01:41:34,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:34,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:34,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:34,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:34,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:34,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:34,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 314 transitions, 4662 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:34,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:34,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:34,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:36,368 INFO L124 PetriNetUnfolderBase]: 8113/13096 cut-off events. [2024-06-28 01:41:36,369 INFO L125 PetriNetUnfolderBase]: For 152073/152076 co-relation queries the response was YES. [2024-06-28 01:41:36,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73374 conditions, 13096 events. 8113/13096 cut-off events. For 152073/152076 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 89820 event pairs, 2734 based on Foata normal form. 7/12764 useless extension candidates. Maximal degree in co-relation 73294. Up to 11484 conditions per place. [2024-06-28 01:41:36,574 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 294 selfloop transitions, 38 changer transitions 0/340 dead transitions. [2024-06-28 01:41:36,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 340 transitions, 5456 flow [2024-06-28 01:41:36,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:41:36,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:41:36,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-28 01:41:36,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855072463768116 [2024-06-28 01:41:36,576 INFO L175 Difference]: Start difference. First operand has 172 places, 314 transitions, 4662 flow. Second operand 6 states and 134 transitions. [2024-06-28 01:41:36,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 340 transitions, 5456 flow [2024-06-28 01:41:37,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 340 transitions, 5369 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 01:41:37,070 INFO L231 Difference]: Finished difference. Result has 174 places, 314 transitions, 4661 flow [2024-06-28 01:41:37,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4575, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4661, PETRI_PLACES=174, PETRI_TRANSITIONS=314} [2024-06-28 01:41:37,072 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 122 predicate places. [2024-06-28 01:41:37,072 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 314 transitions, 4661 flow [2024-06-28 01:41:37,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:37,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:37,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:37,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:41:37,072 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:37,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:37,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1019253986, now seen corresponding path program 1 times [2024-06-28 01:41:37,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:37,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270032075] [2024-06-28 01:41:37,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:37,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:37,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:37,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:37,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270032075] [2024-06-28 01:41:37,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270032075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:37,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:37,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:37,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236441409] [2024-06-28 01:41:37,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:37,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:37,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:37,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:37,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:37,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:37,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 314 transitions, 4661 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 01:41:37,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:37,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:37,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:39,514 INFO L124 PetriNetUnfolderBase]: 8410/13903 cut-off events. [2024-06-28 01:41:39,514 INFO L125 PetriNetUnfolderBase]: For 153971/153984 co-relation queries the response was YES. [2024-06-28 01:41:39,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75732 conditions, 13903 events. 8410/13903 cut-off events. For 153971/153984 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 98321 event pairs, 2306 based on Foata normal form. 18/13453 useless extension candidates. Maximal degree in co-relation 75652. Up to 11243 conditions per place. [2024-06-28 01:41:39,688 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 325 selfloop transitions, 63 changer transitions 0/396 dead transitions. [2024-06-28 01:41:39,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 396 transitions, 6206 flow [2024-06-28 01:41:39,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:39,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:39,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 01:41:39,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403726708074534 [2024-06-28 01:41:39,689 INFO L175 Difference]: Start difference. First operand has 174 places, 314 transitions, 4661 flow. Second operand 7 states and 174 transitions. [2024-06-28 01:41:39,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 396 transitions, 6206 flow [2024-06-28 01:41:40,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 396 transitions, 6066 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 01:41:40,159 INFO L231 Difference]: Finished difference. Result has 178 places, 347 transitions, 5205 flow [2024-06-28 01:41:40,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4549, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5205, PETRI_PLACES=178, PETRI_TRANSITIONS=347} [2024-06-28 01:41:40,160 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 126 predicate places. [2024-06-28 01:41:40,160 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 347 transitions, 5205 flow [2024-06-28 01:41:40,160 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 01:41:40,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:40,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:40,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:41:40,161 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:40,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:40,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1303438592, now seen corresponding path program 1 times [2024-06-28 01:41:40,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:40,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117505508] [2024-06-28 01:41:40,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:40,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:41,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:41,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:41,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117505508] [2024-06-28 01:41:41,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117505508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:41,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:41,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:41:41,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034665544] [2024-06-28 01:41:41,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:41,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:41:41,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:41,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:41:41,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:41:41,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:41,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 347 transitions, 5205 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 01:41:41,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:41,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:41,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:43,176 INFO L124 PetriNetUnfolderBase]: 8699/14257 cut-off events. [2024-06-28 01:41:43,177 INFO L125 PetriNetUnfolderBase]: For 178665/178675 co-relation queries the response was YES. [2024-06-28 01:41:43,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83086 conditions, 14257 events. 8699/14257 cut-off events. For 178665/178675 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 99863 event pairs, 2318 based on Foata normal form. 12/13828 useless extension candidates. Maximal degree in co-relation 83003. Up to 11354 conditions per place. [2024-06-28 01:41:43,370 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 317 selfloop transitions, 113 changer transitions 0/438 dead transitions. [2024-06-28 01:41:43,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 438 transitions, 6977 flow [2024-06-28 01:41:43,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:43,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:43,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 01:41:43,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163043478260869 [2024-06-28 01:41:43,372 INFO L175 Difference]: Start difference. First operand has 178 places, 347 transitions, 5205 flow. Second operand 8 states and 190 transitions. [2024-06-28 01:41:43,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 438 transitions, 6977 flow [2024-06-28 01:41:43,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 438 transitions, 6915 flow, removed 30 selfloop flow, removed 1 redundant places. [2024-06-28 01:41:43,979 INFO L231 Difference]: Finished difference. Result has 186 places, 373 transitions, 5967 flow [2024-06-28 01:41:43,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5149, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5967, PETRI_PLACES=186, PETRI_TRANSITIONS=373} [2024-06-28 01:41:43,980 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 134 predicate places. [2024-06-28 01:41:43,980 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 373 transitions, 5967 flow [2024-06-28 01:41:43,981 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 01:41:43,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:43,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:43,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:41:43,981 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:43,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:43,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1427271366, now seen corresponding path program 2 times [2024-06-28 01:41:43,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:43,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404092051] [2024-06-28 01:41:43,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:43,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:44,767 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 01:41:44,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:44,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404092051] [2024-06-28 01:41:44,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404092051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:44,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:44,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:41:44,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115011867] [2024-06-28 01:41:44,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:44,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:41:44,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:44,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:41:44,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:41:44,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:44,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 373 transitions, 5967 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 01:41:44,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:44,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:44,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:46,999 INFO L124 PetriNetUnfolderBase]: 8781/14353 cut-off events. [2024-06-28 01:41:46,999 INFO L125 PetriNetUnfolderBase]: For 195018/195026 co-relation queries the response was YES. [2024-06-28 01:41:47,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85136 conditions, 14353 events. 8781/14353 cut-off events. For 195018/195026 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 100205 event pairs, 2307 based on Foata normal form. 10/13930 useless extension candidates. Maximal degree in co-relation 85049. Up to 11108 conditions per place. [2024-06-28 01:41:47,197 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 309 selfloop transitions, 121 changer transitions 0/438 dead transitions. [2024-06-28 01:41:47,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 438 transitions, 7333 flow [2024-06-28 01:41:47,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:47,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:47,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 01:41:47,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-28 01:41:47,199 INFO L175 Difference]: Start difference. First operand has 186 places, 373 transitions, 5967 flow. Second operand 8 states and 192 transitions. [2024-06-28 01:41:47,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 438 transitions, 7333 flow [2024-06-28 01:41:47,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 438 transitions, 7158 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-28 01:41:47,770 INFO L231 Difference]: Finished difference. Result has 191 places, 377 transitions, 6123 flow [2024-06-28 01:41:47,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5792, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6123, PETRI_PLACES=191, PETRI_TRANSITIONS=377} [2024-06-28 01:41:47,770 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 139 predicate places. [2024-06-28 01:41:47,770 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 377 transitions, 6123 flow [2024-06-28 01:41:47,771 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 01:41:47,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:47,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:47,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:41:47,771 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:47,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:47,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1432842996, now seen corresponding path program 3 times [2024-06-28 01:41:47,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:47,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641709777] [2024-06-28 01:41:47,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:47,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:48,605 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 01:41:48,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:48,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641709777] [2024-06-28 01:41:48,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641709777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:48,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:48,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:41:48,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457657830] [2024-06-28 01:41:48,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:48,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:41:48,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:48,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:41:48,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:41:48,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:48,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 377 transitions, 6123 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 01:41:48,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:48,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:48,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:50,833 INFO L124 PetriNetUnfolderBase]: 8773/14291 cut-off events. [2024-06-28 01:41:50,833 INFO L125 PetriNetUnfolderBase]: For 200595/200610 co-relation queries the response was YES. [2024-06-28 01:41:50,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85427 conditions, 14291 events. 8773/14291 cut-off events. For 200595/200610 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 99640 event pairs, 2294 based on Foata normal form. 18/13872 useless extension candidates. Maximal degree in co-relation 85339. Up to 11464 conditions per place. [2024-06-28 01:41:51,076 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 319 selfloop transitions, 118 changer transitions 0/445 dead transitions. [2024-06-28 01:41:51,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 445 transitions, 7393 flow [2024-06-28 01:41:51,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:51,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:51,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 01:41:51,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271739130434783 [2024-06-28 01:41:51,078 INFO L175 Difference]: Start difference. First operand has 191 places, 377 transitions, 6123 flow. Second operand 8 states and 194 transitions. [2024-06-28 01:41:51,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 445 transitions, 7393 flow [2024-06-28 01:41:51,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 445 transitions, 7220 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-28 01:41:51,762 INFO L231 Difference]: Finished difference. Result has 195 places, 377 transitions, 6196 flow [2024-06-28 01:41:51,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5950, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6196, PETRI_PLACES=195, PETRI_TRANSITIONS=377} [2024-06-28 01:41:51,763 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 143 predicate places. [2024-06-28 01:41:51,763 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 377 transitions, 6196 flow [2024-06-28 01:41:51,763 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 01:41:51,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:51,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:51,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:41:51,764 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:51,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:51,764 INFO L85 PathProgramCache]: Analyzing trace with hash -181613726, now seen corresponding path program 2 times [2024-06-28 01:41:51,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:51,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151928760] [2024-06-28 01:41:51,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:51,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:52,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:52,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:52,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151928760] [2024-06-28 01:41:52,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151928760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:52,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:52,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:52,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889244081] [2024-06-28 01:41:52,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:52,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:52,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:52,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:52,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:52,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:52,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 377 transitions, 6196 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 01:41:52,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:52,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:52,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:54,559 INFO L124 PetriNetUnfolderBase]: 9001/14863 cut-off events. [2024-06-28 01:41:54,559 INFO L125 PetriNetUnfolderBase]: For 218079/218087 co-relation queries the response was YES. [2024-06-28 01:41:54,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88603 conditions, 14863 events. 9001/14863 cut-off events. For 218079/218087 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 106061 event pairs, 2480 based on Foata normal form. 12/14372 useless extension candidates. Maximal degree in co-relation 88513. Up to 11906 conditions per place. [2024-06-28 01:41:54,749 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 343 selfloop transitions, 74 changer transitions 0/425 dead transitions. [2024-06-28 01:41:54,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 425 transitions, 7445 flow [2024-06-28 01:41:54,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:54,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:54,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 01:41:54,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-28 01:41:54,751 INFO L175 Difference]: Start difference. First operand has 195 places, 377 transitions, 6196 flow. Second operand 7 states and 168 transitions. [2024-06-28 01:41:54,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 425 transitions, 7445 flow [2024-06-28 01:41:55,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 425 transitions, 7137 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 01:41:55,435 INFO L231 Difference]: Finished difference. Result has 196 places, 385 transitions, 6164 flow [2024-06-28 01:41:55,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5888, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6164, PETRI_PLACES=196, PETRI_TRANSITIONS=385} [2024-06-28 01:41:55,436 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 144 predicate places. [2024-06-28 01:41:55,436 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 385 transitions, 6164 flow [2024-06-28 01:41:55,436 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 01:41:55,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:55,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:55,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:41:55,437 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:55,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:55,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1196111792, now seen corresponding path program 4 times [2024-06-28 01:41:55,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:55,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901245480] [2024-06-28 01:41:55,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:55,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:56,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:56,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:56,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901245480] [2024-06-28 01:41:56,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901245480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:56,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:56,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:41:56,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969438519] [2024-06-28 01:41:56,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:56,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:41:56,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:56,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:41:56,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:41:56,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:56,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 385 transitions, 6164 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 01:41:56,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:56,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:56,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:58,518 INFO L124 PetriNetUnfolderBase]: 9038/14501 cut-off events. [2024-06-28 01:41:58,519 INFO L125 PetriNetUnfolderBase]: For 216840/216843 co-relation queries the response was YES. [2024-06-28 01:41:58,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88370 conditions, 14501 events. 9038/14501 cut-off events. For 216840/216843 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 100305 event pairs, 2992 based on Foata normal form. 6/14138 useless extension candidates. Maximal degree in co-relation 88278. Up to 12733 conditions per place. [2024-06-28 01:41:58,734 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 393 selfloop transitions, 38 changer transitions 0/439 dead transitions. [2024-06-28 01:41:58,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 439 transitions, 7356 flow [2024-06-28 01:41:58,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:41:58,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:41:58,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 192 transitions. [2024-06-28 01:41:58,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463768115942029 [2024-06-28 01:41:58,736 INFO L175 Difference]: Start difference. First operand has 196 places, 385 transitions, 6164 flow. Second operand 9 states and 192 transitions. [2024-06-28 01:41:58,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 439 transitions, 7356 flow [2024-06-28 01:41:59,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 439 transitions, 7255 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 01:41:59,421 INFO L231 Difference]: Finished difference. Result has 202 places, 387 transitions, 6194 flow [2024-06-28 01:41:59,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6063, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6194, PETRI_PLACES=202, PETRI_TRANSITIONS=387} [2024-06-28 01:41:59,421 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 150 predicate places. [2024-06-28 01:41:59,422 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 387 transitions, 6194 flow [2024-06-28 01:41:59,422 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 01:41:59,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:59,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:59,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:41:59,422 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:59,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:59,423 INFO L85 PathProgramCache]: Analyzing trace with hash -901807712, now seen corresponding path program 5 times [2024-06-28 01:41:59,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:59,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118283147] [2024-06-28 01:41:59,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:59,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:00,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:00,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:00,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118283147] [2024-06-28 01:42:00,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118283147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:00,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:00,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:00,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689536273] [2024-06-28 01:42:00,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:00,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:00,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:00,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:00,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:00,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:00,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 387 transitions, 6194 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 01:42:00,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:00,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:00,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:02,776 INFO L124 PetriNetUnfolderBase]: 9075/14587 cut-off events. [2024-06-28 01:42:02,776 INFO L125 PetriNetUnfolderBase]: For 227795/227798 co-relation queries the response was YES. [2024-06-28 01:42:02,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88635 conditions, 14587 events. 9075/14587 cut-off events. For 227795/227798 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 101155 event pairs, 2960 based on Foata normal form. 4/14212 useless extension candidates. Maximal degree in co-relation 88542. Up to 12833 conditions per place. [2024-06-28 01:42:02,915 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 388 selfloop transitions, 30 changer transitions 0/426 dead transitions. [2024-06-28 01:42:02,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 426 transitions, 7246 flow [2024-06-28 01:42:02,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:42:02,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:42:02,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 01:42:02,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968944099378882 [2024-06-28 01:42:02,916 INFO L175 Difference]: Start difference. First operand has 202 places, 387 transitions, 6194 flow. Second operand 7 states and 160 transitions. [2024-06-28 01:42:02,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 426 transitions, 7246 flow [2024-06-28 01:42:03,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 426 transitions, 7119 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 01:42:03,426 INFO L231 Difference]: Finished difference. Result has 203 places, 389 transitions, 6184 flow [2024-06-28 01:42:03,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6067, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6184, PETRI_PLACES=203, PETRI_TRANSITIONS=389} [2024-06-28 01:42:03,427 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 151 predicate places. [2024-06-28 01:42:03,427 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 389 transitions, 6184 flow [2024-06-28 01:42:03,427 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 01:42:03,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:03,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:03,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:42:03,428 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:03,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:03,428 INFO L85 PathProgramCache]: Analyzing trace with hash -911905652, now seen corresponding path program 6 times [2024-06-28 01:42:03,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:03,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430622775] [2024-06-28 01:42:03,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:03,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:04,409 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 01:42:04,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:04,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430622775] [2024-06-28 01:42:04,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430622775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:04,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:04,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:04,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474159689] [2024-06-28 01:42:04,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:04,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:04,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:04,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:04,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:04,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:04,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 389 transitions, 6184 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 01:42:04,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:04,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:04,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:06,875 INFO L124 PetriNetUnfolderBase]: 9122/14647 cut-off events. [2024-06-28 01:42:06,876 INFO L125 PetriNetUnfolderBase]: For 234221/234224 co-relation queries the response was YES. [2024-06-28 01:42:06,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89035 conditions, 14647 events. 9122/14647 cut-off events. For 234221/234224 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 101632 event pairs, 2970 based on Foata normal form. 6/14278 useless extension candidates. Maximal degree in co-relation 88942. Up to 12713 conditions per place. [2024-06-28 01:42:07,043 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 372 selfloop transitions, 71 changer transitions 0/451 dead transitions. [2024-06-28 01:42:07,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 451 transitions, 7510 flow [2024-06-28 01:42:07,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:42:07,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:42:07,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 195 transitions. [2024-06-28 01:42:07,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47101449275362317 [2024-06-28 01:42:07,045 INFO L175 Difference]: Start difference. First operand has 203 places, 389 transitions, 6184 flow. Second operand 9 states and 195 transitions. [2024-06-28 01:42:07,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 451 transitions, 7510 flow [2024-06-28 01:42:07,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 451 transitions, 7411 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 01:42:07,670 INFO L231 Difference]: Finished difference. Result has 208 places, 396 transitions, 6419 flow [2024-06-28 01:42:07,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6085, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6419, PETRI_PLACES=208, PETRI_TRANSITIONS=396} [2024-06-28 01:42:07,671 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 156 predicate places. [2024-06-28 01:42:07,671 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 396 transitions, 6419 flow [2024-06-28 01:42:07,671 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 01:42:07,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:07,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:07,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:42:07,672 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:07,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:07,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1196104352, now seen corresponding path program 7 times [2024-06-28 01:42:07,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:07,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125516877] [2024-06-28 01:42:07,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:07,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:08,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:08,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:08,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125516877] [2024-06-28 01:42:08,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125516877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:08,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:08,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:08,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105709648] [2024-06-28 01:42:08,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:08,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:08,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:08,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:08,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:08,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:08,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 396 transitions, 6419 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 01:42:08,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:08,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:08,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:10,748 INFO L124 PetriNetUnfolderBase]: 9159/15021 cut-off events. [2024-06-28 01:42:10,748 INFO L125 PetriNetUnfolderBase]: For 247920/247928 co-relation queries the response was YES. [2024-06-28 01:42:10,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90567 conditions, 15021 events. 9159/15021 cut-off events. For 247920/247928 co-relation queries the response was YES. Maximal size of possible extension queue 599. Compared 106391 event pairs, 2509 based on Foata normal form. 10/14550 useless extension candidates. Maximal degree in co-relation 90472. Up to 11506 conditions per place. [2024-06-28 01:42:10,981 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 310 selfloop transitions, 124 changer transitions 0/442 dead transitions. [2024-06-28 01:42:10,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 442 transitions, 7575 flow [2024-06-28 01:42:10,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:42:10,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:42:10,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 01:42:10,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515527950310559 [2024-06-28 01:42:10,982 INFO L175 Difference]: Start difference. First operand has 208 places, 396 transitions, 6419 flow. Second operand 7 states and 166 transitions. [2024-06-28 01:42:10,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 442 transitions, 7575 flow [2024-06-28 01:42:11,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 442 transitions, 7411 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 01:42:11,724 INFO L231 Difference]: Finished difference. Result has 209 places, 398 transitions, 6573 flow [2024-06-28 01:42:11,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6259, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6573, PETRI_PLACES=209, PETRI_TRANSITIONS=398} [2024-06-28 01:42:11,725 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 157 predicate places. [2024-06-28 01:42:11,725 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 398 transitions, 6573 flow [2024-06-28 01:42:11,725 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 01:42:11,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:11,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:11,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:42:11,726 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:11,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:11,726 INFO L85 PathProgramCache]: Analyzing trace with hash -2054153732, now seen corresponding path program 8 times [2024-06-28 01:42:11,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:11,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189616131] [2024-06-28 01:42:11,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:11,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:11,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:12,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:12,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:12,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189616131] [2024-06-28 01:42:12,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189616131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:12,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:12,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:12,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910362897] [2024-06-28 01:42:12,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:12,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:12,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:12,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:12,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:12,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:12,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 398 transitions, 6573 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 01:42:12,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:12,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:12,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:14,897 INFO L124 PetriNetUnfolderBase]: 9180/15042 cut-off events. [2024-06-28 01:42:14,898 INFO L125 PetriNetUnfolderBase]: For 251323/251331 co-relation queries the response was YES. [2024-06-28 01:42:15,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91319 conditions, 15042 events. 9180/15042 cut-off events. For 251323/251331 co-relation queries the response was YES. Maximal size of possible extension queue 604. Compared 106464 event pairs, 2506 based on Foata normal form. 8/14571 useless extension candidates. Maximal degree in co-relation 91223. Up to 11348 conditions per place. [2024-06-28 01:42:15,085 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 295 selfloop transitions, 148 changer transitions 0/451 dead transitions. [2024-06-28 01:42:15,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 451 transitions, 7873 flow [2024-06-28 01:42:15,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:42:15,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:42:15,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 01:42:15,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186335403726708 [2024-06-28 01:42:15,089 INFO L175 Difference]: Start difference. First operand has 209 places, 398 transitions, 6573 flow. Second operand 7 states and 167 transitions. [2024-06-28 01:42:15,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 451 transitions, 7873 flow [2024-06-28 01:42:15,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 451 transitions, 7582 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 01:42:15,826 INFO L231 Difference]: Finished difference. Result has 212 places, 410 transitions, 6980 flow [2024-06-28 01:42:15,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6282, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6980, PETRI_PLACES=212, PETRI_TRANSITIONS=410} [2024-06-28 01:42:15,828 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 160 predicate places. [2024-06-28 01:42:15,828 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 410 transitions, 6980 flow [2024-06-28 01:42:15,828 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 01:42:15,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:15,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:15,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:42:15,829 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:15,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:15,829 INFO L85 PathProgramCache]: Analyzing trace with hash 201248674, now seen corresponding path program 3 times [2024-06-28 01:42:15,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:15,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139796793] [2024-06-28 01:42:15,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:15,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:16,409 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 01:42:16,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:16,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139796793] [2024-06-28 01:42:16,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139796793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:16,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:16,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:42:16,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238600447] [2024-06-28 01:42:16,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:16,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:42:16,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:16,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:42:16,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:42:16,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:16,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 410 transitions, 6980 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 01:42:16,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:16,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:16,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:18,650 INFO L124 PetriNetUnfolderBase]: 9168/14738 cut-off events. [2024-06-28 01:42:18,651 INFO L125 PetriNetUnfolderBase]: For 253989/253992 co-relation queries the response was YES. [2024-06-28 01:42:18,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92386 conditions, 14738 events. 9168/14738 cut-off events. For 253989/253992 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 102521 event pairs, 3032 based on Foata normal form. 8/14365 useless extension candidates. Maximal degree in co-relation 92288. Up to 12868 conditions per place. [2024-06-28 01:42:18,849 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 391 selfloop transitions, 39 changer transitions 0/438 dead transitions. [2024-06-28 01:42:18,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 438 transitions, 8048 flow [2024-06-28 01:42:18,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:42:18,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:42:18,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-28 01:42:18,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4813664596273292 [2024-06-28 01:42:18,851 INFO L175 Difference]: Start difference. First operand has 212 places, 410 transitions, 6980 flow. Second operand 7 states and 155 transitions. [2024-06-28 01:42:18,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 438 transitions, 8048 flow [2024-06-28 01:42:19,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 438 transitions, 7847 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-28 01:42:19,729 INFO L231 Difference]: Finished difference. Result has 216 places, 410 transitions, 6867 flow [2024-06-28 01:42:19,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6781, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6867, PETRI_PLACES=216, PETRI_TRANSITIONS=410} [2024-06-28 01:42:19,729 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 164 predicate places. [2024-06-28 01:42:19,729 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 410 transitions, 6867 flow [2024-06-28 01:42:19,730 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 01:42:19,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:19,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:19,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:42:19,730 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:19,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:19,731 INFO L85 PathProgramCache]: Analyzing trace with hash 201693586, now seen corresponding path program 1 times [2024-06-28 01:42:19,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:19,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205146223] [2024-06-28 01:42:19,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:19,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:20,435 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 01:42:20,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:20,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205146223] [2024-06-28 01:42:20,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205146223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:20,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:20,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:42:20,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739216013] [2024-06-28 01:42:20,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:20,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:42:20,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:20,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:42:20,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:42:20,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:20,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 410 transitions, 6867 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 01:42:20,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:20,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:20,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:22,660 INFO L124 PetriNetUnfolderBase]: 9172/14755 cut-off events. [2024-06-28 01:42:22,661 INFO L125 PetriNetUnfolderBase]: For 246802/246802 co-relation queries the response was YES. [2024-06-28 01:42:22,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90983 conditions, 14755 events. 9172/14755 cut-off events. For 246802/246802 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 102705 event pairs, 3035 based on Foata normal form. 2/14375 useless extension candidates. Maximal degree in co-relation 90884. Up to 13118 conditions per place. [2024-06-28 01:42:22,857 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 412 selfloop transitions, 18 changer transitions 0/438 dead transitions. [2024-06-28 01:42:22,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 438 transitions, 7905 flow [2024-06-28 01:42:22,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:42:22,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:42:22,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 146 transitions. [2024-06-28 01:42:22,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453416149068323 [2024-06-28 01:42:22,858 INFO L175 Difference]: Start difference. First operand has 216 places, 410 transitions, 6867 flow. Second operand 7 states and 146 transitions. [2024-06-28 01:42:22,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 438 transitions, 7905 flow [2024-06-28 01:42:23,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 438 transitions, 7714 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 01:42:23,854 INFO L231 Difference]: Finished difference. Result has 217 places, 417 transitions, 6825 flow [2024-06-28 01:42:23,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6676, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6825, PETRI_PLACES=217, PETRI_TRANSITIONS=417} [2024-06-28 01:42:23,855 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 165 predicate places. [2024-06-28 01:42:23,855 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 417 transitions, 6825 flow [2024-06-28 01:42:23,856 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 01:42:23,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:23,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:23,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:42:23,856 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:23,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:23,857 INFO L85 PathProgramCache]: Analyzing trace with hash 24211673, now seen corresponding path program 1 times [2024-06-28 01:42:23,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:23,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901480030] [2024-06-28 01:42:23,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:23,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:24,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:24,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:24,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901480030] [2024-06-28 01:42:24,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901480030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:24,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:24,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:42:24,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606362773] [2024-06-28 01:42:24,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:24,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:42:24,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:24,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:42:24,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:42:24,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:24,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 417 transitions, 6825 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 01:42:24,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:24,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:24,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:27,225 INFO L124 PetriNetUnfolderBase]: 9274/14966 cut-off events. [2024-06-28 01:42:27,226 INFO L125 PetriNetUnfolderBase]: For 259398/259398 co-relation queries the response was YES. [2024-06-28 01:42:27,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91871 conditions, 14966 events. 9274/14966 cut-off events. For 259398/259398 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 104929 event pairs, 3061 based on Foata normal form. 6/14569 useless extension candidates. Maximal degree in co-relation 91774. Up to 13151 conditions per place. [2024-06-28 01:42:27,488 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 412 selfloop transitions, 32 changer transitions 0/452 dead transitions. [2024-06-28 01:42:27,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 452 transitions, 7891 flow [2024-06-28 01:42:27,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:42:27,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:42:27,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-28 01:42:27,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48757763975155277 [2024-06-28 01:42:27,490 INFO L175 Difference]: Start difference. First operand has 217 places, 417 transitions, 6825 flow. Second operand 7 states and 157 transitions. [2024-06-28 01:42:27,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 452 transitions, 7891 flow [2024-06-28 01:42:28,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 452 transitions, 7804 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-28 01:42:28,239 INFO L231 Difference]: Finished difference. Result has 220 places, 420 transitions, 6850 flow [2024-06-28 01:42:28,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6738, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6850, PETRI_PLACES=220, PETRI_TRANSITIONS=420} [2024-06-28 01:42:28,239 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 168 predicate places. [2024-06-28 01:42:28,240 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 420 transitions, 6850 flow [2024-06-28 01:42:28,240 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 01:42:28,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:28,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:28,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:42:28,240 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:28,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:28,241 INFO L85 PathProgramCache]: Analyzing trace with hash 24331643, now seen corresponding path program 2 times [2024-06-28 01:42:28,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:28,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702030856] [2024-06-28 01:42:28,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:28,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:28,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:28,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:28,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702030856] [2024-06-28 01:42:28,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702030856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:28,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:28,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:42:28,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544321625] [2024-06-28 01:42:28,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:28,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:42:28,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:28,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:42:28,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:42:28,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:28,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 420 transitions, 6850 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 01:42:28,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:28,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:28,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:31,824 INFO L124 PetriNetUnfolderBase]: 9376/15163 cut-off events. [2024-06-28 01:42:31,825 INFO L125 PetriNetUnfolderBase]: For 269584/269584 co-relation queries the response was YES. [2024-06-28 01:42:32,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93595 conditions, 15163 events. 9376/15163 cut-off events. For 269584/269584 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 106845 event pairs, 3038 based on Foata normal form. 6/14751 useless extension candidates. Maximal degree in co-relation 93497. Up to 12884 conditions per place. [2024-06-28 01:42:32,101 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 402 selfloop transitions, 60 changer transitions 0/470 dead transitions. [2024-06-28 01:42:32,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 470 transitions, 8175 flow [2024-06-28 01:42:32,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:42:32,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:42:32,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 01:42:32,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515527950310559 [2024-06-28 01:42:32,103 INFO L175 Difference]: Start difference. First operand has 220 places, 420 transitions, 6850 flow. Second operand 7 states and 166 transitions. [2024-06-28 01:42:32,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 470 transitions, 8175 flow [2024-06-28 01:42:32,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 470 transitions, 8089 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 01:42:32,913 INFO L231 Difference]: Finished difference. Result has 222 places, 426 transitions, 6981 flow [2024-06-28 01:42:32,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6764, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6981, PETRI_PLACES=222, PETRI_TRANSITIONS=426} [2024-06-28 01:42:32,914 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 170 predicate places. [2024-06-28 01:42:32,914 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 426 transitions, 6981 flow [2024-06-28 01:42:32,914 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 01:42:32,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:32,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:32,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:42:32,915 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:32,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:32,915 INFO L85 PathProgramCache]: Analyzing trace with hash -411924135, now seen corresponding path program 3 times [2024-06-28 01:42:32,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:32,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965531588] [2024-06-28 01:42:32,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:32,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:33,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:33,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:33,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965531588] [2024-06-28 01:42:33,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965531588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:33,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:33,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:42:33,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395757831] [2024-06-28 01:42:33,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:33,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:42:33,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:33,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:42:33,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:42:33,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:33,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 426 transitions, 6981 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 01:42:33,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:33,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:33,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:36,106 INFO L124 PetriNetUnfolderBase]: 9358/15119 cut-off events. [2024-06-28 01:42:36,106 INFO L125 PetriNetUnfolderBase]: For 276573/276576 co-relation queries the response was YES. [2024-06-28 01:42:36,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94176 conditions, 15119 events. 9358/15119 cut-off events. For 276573/276576 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 106277 event pairs, 3031 based on Foata normal form. 6/14712 useless extension candidates. Maximal degree in co-relation 94077. Up to 12873 conditions per place. [2024-06-28 01:42:36,291 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 399 selfloop transitions, 58 changer transitions 0/465 dead transitions. [2024-06-28 01:42:36,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 465 transitions, 8128 flow [2024-06-28 01:42:36,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:42:36,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:42:36,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 01:42:36,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968944099378882 [2024-06-28 01:42:36,310 INFO L175 Difference]: Start difference. First operand has 222 places, 426 transitions, 6981 flow. Second operand 7 states and 160 transitions. [2024-06-28 01:42:36,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 465 transitions, 8128 flow [2024-06-28 01:42:37,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 465 transitions, 8032 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 01:42:37,064 INFO L231 Difference]: Finished difference. Result has 226 places, 426 transitions, 7010 flow [2024-06-28 01:42:37,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6885, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7010, PETRI_PLACES=226, PETRI_TRANSITIONS=426} [2024-06-28 01:42:37,065 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 174 predicate places. [2024-06-28 01:42:37,066 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 426 transitions, 7010 flow [2024-06-28 01:42:37,069 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 01:42:37,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:37,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:37,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:42:37,069 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:37,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:37,070 INFO L85 PathProgramCache]: Analyzing trace with hash 201709427, now seen corresponding path program 1 times [2024-06-28 01:42:37,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:37,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263985157] [2024-06-28 01:42:37,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:37,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:38,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:38,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:38,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263985157] [2024-06-28 01:42:38,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263985157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:38,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:38,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:42:38,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282201308] [2024-06-28 01:42:38,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:38,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:42:38,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:38,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:42:38,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:42:38,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:38,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 426 transitions, 7010 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 01:42:38,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:38,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:38,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:40,569 INFO L124 PetriNetUnfolderBase]: 9353/15060 cut-off events. [2024-06-28 01:42:40,569 INFO L125 PetriNetUnfolderBase]: For 276052/276052 co-relation queries the response was YES. [2024-06-28 01:42:40,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93951 conditions, 15060 events. 9353/15060 cut-off events. For 276052/276052 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 105190 event pairs, 3048 based on Foata normal form. 2/14664 useless extension candidates. Maximal degree in co-relation 93850. Up to 13351 conditions per place. [2024-06-28 01:42:40,759 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 424 selfloop transitions, 23 changer transitions 0/455 dead transitions. [2024-06-28 01:42:40,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 455 transitions, 8075 flow [2024-06-28 01:42:40,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:42:40,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:42:40,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 148 transitions. [2024-06-28 01:42:40,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45962732919254656 [2024-06-28 01:42:40,772 INFO L175 Difference]: Start difference. First operand has 226 places, 426 transitions, 7010 flow. Second operand 7 states and 148 transitions. [2024-06-28 01:42:40,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 455 transitions, 8075 flow [2024-06-28 01:42:41,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 455 transitions, 7899 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 01:42:41,664 INFO L231 Difference]: Finished difference. Result has 227 places, 431 transitions, 6973 flow [2024-06-28 01:42:41,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6839, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6973, PETRI_PLACES=227, PETRI_TRANSITIONS=431} [2024-06-28 01:42:41,666 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 175 predicate places. [2024-06-28 01:42:41,666 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 431 transitions, 6973 flow [2024-06-28 01:42:41,667 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 01:42:41,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:41,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:41,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:42:41,667 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:41,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:41,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1643834912, now seen corresponding path program 1 times [2024-06-28 01:42:41,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:41,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737975158] [2024-06-28 01:42:41,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:41,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:42,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:42,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:42,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737975158] [2024-06-28 01:42:42,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737975158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:42,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:42,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:42:42,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356522896] [2024-06-28 01:42:42,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:42,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:42:42,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:42,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:42:42,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:42:42,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:42,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 431 transitions, 6973 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:42,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:42,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:42,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:45,353 INFO L124 PetriNetUnfolderBase]: 9446/15462 cut-off events. [2024-06-28 01:42:45,354 INFO L125 PetriNetUnfolderBase]: For 292284/292297 co-relation queries the response was YES. [2024-06-28 01:42:45,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95524 conditions, 15462 events. 9446/15462 cut-off events. For 292284/292297 co-relation queries the response was YES. Maximal size of possible extension queue 604. Compared 109752 event pairs, 2418 based on Foata normal form. 22/15010 useless extension candidates. Maximal degree in co-relation 95422. Up to 12042 conditions per place. [2024-06-28 01:42:45,613 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 375 selfloop transitions, 121 changer transitions 0/504 dead transitions. [2024-06-28 01:42:45,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 504 transitions, 8420 flow [2024-06-28 01:42:45,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:42:45,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:42:45,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-28 01:42:45,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5169082125603864 [2024-06-28 01:42:45,614 INFO L175 Difference]: Start difference. First operand has 227 places, 431 transitions, 6973 flow. Second operand 9 states and 214 transitions. [2024-06-28 01:42:45,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 504 transitions, 8420 flow [2024-06-28 01:42:46,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 504 transitions, 8342 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 01:42:46,530 INFO L231 Difference]: Finished difference. Result has 232 places, 432 transitions, 7182 flow [2024-06-28 01:42:46,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6895, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7182, PETRI_PLACES=232, PETRI_TRANSITIONS=432} [2024-06-28 01:42:46,531 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 180 predicate places. [2024-06-28 01:42:46,531 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 432 transitions, 7182 flow [2024-06-28 01:42:46,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:46,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:46,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:46,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:42:46,532 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:46,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:46,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1531834372, now seen corresponding path program 1 times [2024-06-28 01:42:46,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:46,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908699256] [2024-06-28 01:42:46,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:46,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:47,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:47,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:47,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908699256] [2024-06-28 01:42:47,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908699256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:47,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:47,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:42:47,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806861751] [2024-06-28 01:42:47,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:47,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:42:47,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:47,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:42:47,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:42:47,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:47,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 432 transitions, 7182 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 01:42:47,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:47,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:47,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:49,761 INFO L124 PetriNetUnfolderBase]: 9505/14725 cut-off events. [2024-06-28 01:42:49,762 INFO L125 PetriNetUnfolderBase]: For 300750/300763 co-relation queries the response was YES. [2024-06-28 01:42:49,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96605 conditions, 14725 events. 9505/14725 cut-off events. For 300750/300763 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 97412 event pairs, 2059 based on Foata normal form. 14/14479 useless extension candidates. Maximal degree in co-relation 96502. Up to 12703 conditions per place. [2024-06-28 01:42:49,954 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 426 selfloop transitions, 116 changer transitions 0/550 dead transitions. [2024-06-28 01:42:49,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 550 transitions, 9539 flow [2024-06-28 01:42:49,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:49,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:49,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 01:42:49,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-06-28 01:42:49,956 INFO L175 Difference]: Start difference. First operand has 232 places, 432 transitions, 7182 flow. Second operand 8 states and 196 transitions. [2024-06-28 01:42:49,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 550 transitions, 9539 flow [2024-06-28 01:42:50,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 550 transitions, 9264 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 01:42:50,939 INFO L231 Difference]: Finished difference. Result has 237 places, 489 transitions, 8135 flow [2024-06-28 01:42:50,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6907, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8135, PETRI_PLACES=237, PETRI_TRANSITIONS=489} [2024-06-28 01:42:50,940 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 185 predicate places. [2024-06-28 01:42:50,940 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 489 transitions, 8135 flow [2024-06-28 01:42:50,940 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 01:42:50,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:50,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:50,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:42:50,941 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:50,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:50,941 INFO L85 PathProgramCache]: Analyzing trace with hash -640067894, now seen corresponding path program 2 times [2024-06-28 01:42:50,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:50,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260600832] [2024-06-28 01:42:50,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:50,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:51,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:51,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:51,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260600832] [2024-06-28 01:42:51,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260600832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:51,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:51,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:42:51,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274497592] [2024-06-28 01:42:51,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:51,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:42:51,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:51,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:42:51,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:42:51,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:51,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 489 transitions, 8135 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 01:42:51,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:51,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:51,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:54,563 INFO L124 PetriNetUnfolderBase]: 9549/15334 cut-off events. [2024-06-28 01:42:54,563 INFO L125 PetriNetUnfolderBase]: For 309263/309276 co-relation queries the response was YES. [2024-06-28 01:42:54,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99919 conditions, 15334 events. 9549/15334 cut-off events. For 309263/309276 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 105859 event pairs, 2353 based on Foata normal form. 14/14951 useless extension candidates. Maximal degree in co-relation 99811. Up to 12984 conditions per place. [2024-06-28 01:42:54,770 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 440 selfloop transitions, 102 changer transitions 0/550 dead transitions. [2024-06-28 01:42:54,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 550 transitions, 9780 flow [2024-06-28 01:42:54,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:54,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:54,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 01:42:54,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2024-06-28 01:42:54,771 INFO L175 Difference]: Start difference. First operand has 237 places, 489 transitions, 8135 flow. Second operand 8 states and 188 transitions. [2024-06-28 01:42:54,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 550 transitions, 9780 flow [2024-06-28 01:42:55,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 550 transitions, 9644 flow, removed 67 selfloop flow, removed 1 redundant places. [2024-06-28 01:42:55,858 INFO L231 Difference]: Finished difference. Result has 245 places, 498 transitions, 8414 flow [2024-06-28 01:42:55,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8045, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8414, PETRI_PLACES=245, PETRI_TRANSITIONS=498} [2024-06-28 01:42:55,858 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 193 predicate places. [2024-06-28 01:42:55,859 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 498 transitions, 8414 flow [2024-06-28 01:42:55,859 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 01:42:55,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:55,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:55,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:42:55,859 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:55,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:55,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1340767514, now seen corresponding path program 1 times [2024-06-28 01:42:55,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:55,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692000448] [2024-06-28 01:42:55,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:55,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:56,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:56,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:56,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692000448] [2024-06-28 01:42:56,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692000448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:56,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:56,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:42:56,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350183426] [2024-06-28 01:42:56,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:56,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:42:56,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:56,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:42:56,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:42:56,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:56,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 498 transitions, 8414 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 01:42:56,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:56,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:56,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:00,093 INFO L124 PetriNetUnfolderBase]: 9771/16061 cut-off events. [2024-06-28 01:43:00,093 INFO L125 PetriNetUnfolderBase]: For 337000/337017 co-relation queries the response was YES. [2024-06-28 01:43:00,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103171 conditions, 16061 events. 9771/16061 cut-off events. For 337000/337017 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 115293 event pairs, 2541 based on Foata normal form. 20/15557 useless extension candidates. Maximal degree in co-relation 103059. Up to 12827 conditions per place. [2024-06-28 01:43:00,295 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 454 selfloop transitions, 101 changer transitions 0/563 dead transitions. [2024-06-28 01:43:00,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 563 transitions, 10244 flow [2024-06-28 01:43:00,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:00,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:00,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 01:43:00,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.531055900621118 [2024-06-28 01:43:00,314 INFO L175 Difference]: Start difference. First operand has 245 places, 498 transitions, 8414 flow. Second operand 7 states and 171 transitions. [2024-06-28 01:43:00,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 563 transitions, 10244 flow [2024-06-28 01:43:01,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 563 transitions, 9998 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 01:43:01,422 INFO L231 Difference]: Finished difference. Result has 248 places, 515 transitions, 8700 flow [2024-06-28 01:43:01,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8192, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8700, PETRI_PLACES=248, PETRI_TRANSITIONS=515} [2024-06-28 01:43:01,423 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 196 predicate places. [2024-06-28 01:43:01,423 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 515 transitions, 8700 flow [2024-06-28 01:43:01,423 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 01:43:01,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:01,423 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 01:43:01,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:43:01,424 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:01,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:01,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1535797350, now seen corresponding path program 2 times [2024-06-28 01:43:01,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:01,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617017651] [2024-06-28 01:43:01,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:01,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:02,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:02,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:02,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617017651] [2024-06-28 01:43:02,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617017651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:02,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:02,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:02,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722066524] [2024-06-28 01:43:02,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:02,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:02,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:02,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:02,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:02,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:43:02,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 515 transitions, 8700 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 01:43:02,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:02,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:43:02,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:05,234 INFO L124 PetriNetUnfolderBase]: 9753/16081 cut-off events. [2024-06-28 01:43:05,234 INFO L125 PetriNetUnfolderBase]: For 343150/343160 co-relation queries the response was YES. [2024-06-28 01:43:05,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103647 conditions, 16081 events. 9753/16081 cut-off events. For 343150/343160 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 116195 event pairs, 2590 based on Foata normal form. 14/15555 useless extension candidates. Maximal degree in co-relation 103533. Up to 12816 conditions per place. [2024-06-28 01:43:05,448 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 451 selfloop transitions, 99 changer transitions 0/558 dead transitions. [2024-06-28 01:43:05,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 558 transitions, 10227 flow [2024-06-28 01:43:05,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:05,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:05,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 01:43:05,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-28 01:43:05,449 INFO L175 Difference]: Start difference. First operand has 248 places, 515 transitions, 8700 flow. Second operand 7 states and 168 transitions. [2024-06-28 01:43:05,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 558 transitions, 10227 flow [2024-06-28 01:43:06,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 558 transitions, 10091 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-28 01:43:06,476 INFO L231 Difference]: Finished difference. Result has 252 places, 515 transitions, 8776 flow [2024-06-28 01:43:06,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8564, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8776, PETRI_PLACES=252, PETRI_TRANSITIONS=515} [2024-06-28 01:43:06,477 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 200 predicate places. [2024-06-28 01:43:06,478 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 515 transitions, 8776 flow [2024-06-28 01:43:06,478 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 01:43:06,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:06,478 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 01:43:06,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:43:06,478 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:06,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:06,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1776797058, now seen corresponding path program 2 times [2024-06-28 01:43:06,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:06,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491084845] [2024-06-28 01:43:06,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:06,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:07,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:07,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:07,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491084845] [2024-06-28 01:43:07,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491084845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:07,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:07,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:43:07,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008116937] [2024-06-28 01:43:07,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:07,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:43:07,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:07,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:43:07,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:43:07,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:43:07,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 515 transitions, 8776 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:07,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:07,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:43:07,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:11,401 INFO L124 PetriNetUnfolderBase]: 9864/15704 cut-off events. [2024-06-28 01:43:11,402 INFO L125 PetriNetUnfolderBase]: For 350003/350016 co-relation queries the response was YES. [2024-06-28 01:43:11,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104758 conditions, 15704 events. 9864/15704 cut-off events. For 350003/350016 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 108101 event pairs, 2303 based on Foata normal form. 22/15349 useless extension candidates. Maximal degree in co-relation 104643. Up to 12711 conditions per place. [2024-06-28 01:43:11,589 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 411 selfloop transitions, 183 changer transitions 0/602 dead transitions. [2024-06-28 01:43:11,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 602 transitions, 10625 flow [2024-06-28 01:43:11,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:11,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:11,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-28 01:43:11,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289855072463768 [2024-06-28 01:43:11,591 INFO L175 Difference]: Start difference. First operand has 252 places, 515 transitions, 8776 flow. Second operand 9 states and 219 transitions. [2024-06-28 01:43:11,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 602 transitions, 10625 flow [2024-06-28 01:43:12,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 602 transitions, 10455 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:12,795 INFO L231 Difference]: Finished difference. Result has 259 places, 524 transitions, 9277 flow [2024-06-28 01:43:12,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8606, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9277, PETRI_PLACES=259, PETRI_TRANSITIONS=524} [2024-06-28 01:43:12,795 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 207 predicate places. [2024-06-28 01:43:12,795 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 524 transitions, 9277 flow [2024-06-28 01:43:12,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:12,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:12,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:12,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:43:12,796 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:12,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:12,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1295969468, now seen corresponding path program 3 times [2024-06-28 01:43:12,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:12,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682833027] [2024-06-28 01:43:12,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:12,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:14,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:14,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:14,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682833027] [2024-06-28 01:43:14,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682833027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:14,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:14,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:43:14,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680971371] [2024-06-28 01:43:14,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:14,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:43:14,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:14,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:43:14,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:43:14,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:43:14,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 524 transitions, 9277 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:14,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:14,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:43:14,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:18,034 INFO L124 PetriNetUnfolderBase]: 9965/16117 cut-off events. [2024-06-28 01:43:18,034 INFO L125 PetriNetUnfolderBase]: For 386764/386774 co-relation queries the response was YES. [2024-06-28 01:43:18,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107908 conditions, 16117 events. 9965/16117 cut-off events. For 386764/386774 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 113390 event pairs, 2440 based on Foata normal form. 18/15700 useless extension candidates. Maximal degree in co-relation 107790. Up to 12870 conditions per place. [2024-06-28 01:43:18,224 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 420 selfloop transitions, 176 changer transitions 0/604 dead transitions. [2024-06-28 01:43:18,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 604 transitions, 11052 flow [2024-06-28 01:43:18,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:18,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:18,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-28 01:43:18,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5193236714975845 [2024-06-28 01:43:18,226 INFO L175 Difference]: Start difference. First operand has 259 places, 524 transitions, 9277 flow. Second operand 9 states and 215 transitions. [2024-06-28 01:43:18,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 604 transitions, 11052 flow [2024-06-28 01:43:19,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 604 transitions, 10748 flow, removed 49 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:19,466 INFO L231 Difference]: Finished difference. Result has 266 places, 530 transitions, 9591 flow [2024-06-28 01:43:19,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8975, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9591, PETRI_PLACES=266, PETRI_TRANSITIONS=530} [2024-06-28 01:43:19,467 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 214 predicate places. [2024-06-28 01:43:19,467 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 530 transitions, 9591 flow [2024-06-28 01:43:19,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:19,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:19,467 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 01:43:19,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:43:19,467 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:19,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:19,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1295738828, now seen corresponding path program 4 times [2024-06-28 01:43:19,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:19,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529235377] [2024-06-28 01:43:19,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:19,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:20,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:20,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:20,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529235377] [2024-06-28 01:43:20,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529235377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:20,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:20,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:43:20,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597130280] [2024-06-28 01:43:20,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:20,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:43:20,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:20,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:43:20,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:43:20,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:43:20,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 530 transitions, 9591 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:20,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:20,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:43:20,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:24,199 INFO L124 PetriNetUnfolderBase]: 10082/16294 cut-off events. [2024-06-28 01:43:24,199 INFO L125 PetriNetUnfolderBase]: For 404915/404925 co-relation queries the response was YES. [2024-06-28 01:43:24,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111019 conditions, 16294 events. 10082/16294 cut-off events. For 404915/404925 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 114852 event pairs, 2434 based on Foata normal form. 18/15879 useless extension candidates. Maximal degree in co-relation 110897. Up to 12663 conditions per place. [2024-06-28 01:43:24,404 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 407 selfloop transitions, 189 changer transitions 0/604 dead transitions. [2024-06-28 01:43:24,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 604 transitions, 11355 flow [2024-06-28 01:43:24,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:24,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:24,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-28 01:43:24,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5193236714975845 [2024-06-28 01:43:24,406 INFO L175 Difference]: Start difference. First operand has 266 places, 530 transitions, 9591 flow. Second operand 9 states and 215 transitions. [2024-06-28 01:43:24,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 604 transitions, 11355 flow [2024-06-28 01:43:25,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 604 transitions, 11135 flow, removed 64 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:25,799 INFO L231 Difference]: Finished difference. Result has 272 places, 536 transitions, 9996 flow [2024-06-28 01:43:25,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9371, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9996, PETRI_PLACES=272, PETRI_TRANSITIONS=536} [2024-06-28 01:43:25,800 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 220 predicate places. [2024-06-28 01:43:25,800 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 536 transitions, 9996 flow [2024-06-28 01:43:25,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:25,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:25,801 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 01:43:25,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:43:25,801 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:25,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:25,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1335057562, now seen corresponding path program 3 times [2024-06-28 01:43:25,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:25,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828820061] [2024-06-28 01:43:25,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:25,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:25,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:26,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:26,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:26,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828820061] [2024-06-28 01:43:26,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828820061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:26,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:26,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:26,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961293231] [2024-06-28 01:43:26,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:26,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:26,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:26,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:26,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:26,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:43:26,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 536 transitions, 9996 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 01:43:26,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:26,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:43:26,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:30,254 INFO L124 PetriNetUnfolderBase]: 10143/16412 cut-off events. [2024-06-28 01:43:30,254 INFO L125 PetriNetUnfolderBase]: For 416173/416183 co-relation queries the response was YES. [2024-06-28 01:43:30,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112981 conditions, 16412 events. 10143/16412 cut-off events. For 416173/416183 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 115932 event pairs, 2561 based on Foata normal form. 10/15972 useless extension candidates. Maximal degree in co-relation 112858. Up to 13806 conditions per place. [2024-06-28 01:43:30,481 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 467 selfloop transitions, 116 changer transitions 0/591 dead transitions. [2024-06-28 01:43:30,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 591 transitions, 11777 flow [2024-06-28 01:43:30,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:30,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:30,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-28 01:43:30,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49728260869565216 [2024-06-28 01:43:30,482 INFO L175 Difference]: Start difference. First operand has 272 places, 536 transitions, 9996 flow. Second operand 8 states and 183 transitions. [2024-06-28 01:43:30,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 591 transitions, 11777 flow [2024-06-28 01:43:31,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 591 transitions, 11445 flow, removed 75 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:31,952 INFO L231 Difference]: Finished difference. Result has 278 places, 548 transitions, 10134 flow [2024-06-28 01:43:31,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9664, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10134, PETRI_PLACES=278, PETRI_TRANSITIONS=548} [2024-06-28 01:43:31,953 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 226 predicate places. [2024-06-28 01:43:31,953 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 548 transitions, 10134 flow [2024-06-28 01:43:31,954 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 01:43:31,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:31,954 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 01:43:31,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:43:31,954 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:31,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:31,954 INFO L85 PathProgramCache]: Analyzing trace with hash 138645418, now seen corresponding path program 3 times [2024-06-28 01:43:31,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:31,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059212112] [2024-06-28 01:43:31,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:31,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:32,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:32,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:32,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059212112] [2024-06-28 01:43:32,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059212112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:32,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:32,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:32,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145646761] [2024-06-28 01:43:32,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:32,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:32,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:32,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:32,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:32,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:43:32,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 548 transitions, 10134 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 01:43:32,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:32,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:43:32,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand