./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 02:08:00,691 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:08:00,757 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:08:00,763 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:08:00,764 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:08:00,789 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:08:00,790 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:08:00,790 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:08:00,791 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:08:00,795 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:08:00,795 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:08:00,795 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:08:00,796 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:08:00,798 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:08:00,798 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:08:00,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:08:00,798 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:08:00,798 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:08:00,799 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:08:00,799 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:08:00,799 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:08:00,799 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:08:00,800 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:08:00,800 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:08:00,800 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:08:00,800 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:08:00,800 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:08:00,801 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:08:00,801 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:08:00,801 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:08:00,802 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:08:00,802 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:08:00,803 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:08:00,803 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:08:00,803 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:08:00,803 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:08:00,803 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:08:00,804 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:08:00,804 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:08:00,804 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:08:00,804 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:08:00,805 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:08:00,805 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:08:00,805 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 02:08:01,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:08:01,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:08:01,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:08:01,054 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:08:01,054 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:08:01,055 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 02:08:02,169 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:08:02,364 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:08:02,365 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 02:08:02,379 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9d96b33c/747830c01f8d4b9088b1ad58d8b4b3bf/FLAG693a88f4f [2024-06-28 02:08:02,392 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9d96b33c/747830c01f8d4b9088b1ad58d8b4b3bf [2024-06-28 02:08:02,394 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:08:02,395 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:08:02,395 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-28 02:08:02,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:08:02,566 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:08:02,567 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:08:02,567 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:08:02,571 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:08:02,571 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:08:02" (1/2) ... [2024-06-28 02:08:02,572 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@635639e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:08:02, skipping insertion in model container [2024-06-28 02:08:02,572 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:08:02" (1/2) ... [2024-06-28 02:08:02,574 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@65a84861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:08:02, skipping insertion in model container [2024-06-28 02:08:02,575 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:08:02" (2/2) ... [2024-06-28 02:08:02,575 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@635639e2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:08:02, skipping insertion in model container [2024-06-28 02:08:02,575 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:08:02" (2/2) ... [2024-06-28 02:08:02,575 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:08:02,704 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:08:02,706 INFO L97 edCorrectnessWitness]: Location invariant before [L860-L860] (((((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0) [2024-06-28 02:08:02,706 INFO L97 edCorrectnessWitness]: Location invariant before [L857-L857] (((((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0) [2024-06-28 02:08:02,706 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] (((((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0) [2024-06-28 02:08:02,706 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:08:02,706 INFO L106 edCorrectnessWitness]: ghost_update [L855-L855] multithreaded = 1; [2024-06-28 02:08:02,745 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:08:02,883 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/safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1039,1052] [2024-06-28 02:08:03,074 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:08:03,093 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 02:08:03,122 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/safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1039,1052] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:08:03,209 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:08:03,245 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:08:03,250 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:08:03 WrapperNode [2024-06-28 02:08:03,250 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:08:03,251 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:08:03,251 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:08:03,251 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:08:03,257 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 02:08:03" (1/1) ... [2024-06-28 02:08:03,273 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 02:08:03" (1/1) ... [2024-06-28 02:08:03,300 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 140 [2024-06-28 02:08:03,301 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:08:03,301 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:08:03,301 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:08:03,301 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:08:03,310 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 02:08:03" (1/1) ... [2024-06-28 02:08:03,310 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 02:08:03" (1/1) ... [2024-06-28 02:08:03,313 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 02:08:03" (1/1) ... [2024-06-28 02:08:03,336 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 02:08:03,336 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 02:08:03" (1/1) ... [2024-06-28 02:08:03,336 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 02:08:03" (1/1) ... [2024-06-28 02:08:03,346 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 02:08:03" (1/1) ... [2024-06-28 02:08:03,347 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 02:08:03" (1/1) ... [2024-06-28 02:08:03,349 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 02:08:03" (1/1) ... [2024-06-28 02:08:03,350 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 02:08:03" (1/1) ... [2024-06-28 02:08:03,354 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:08:03,354 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:08:03,354 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:08:03,355 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:08:03,355 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 02:08:03" (1/1) ... [2024-06-28 02:08:03,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:08:03,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:08:03,395 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 02:08:03,412 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 02:08:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:08:03,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:08:03,427 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 02:08:03,427 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 02:08:03,427 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 02:08:03,427 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 02:08:03,427 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 02:08:03,427 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 02:08:03,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:08:03,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:08:03,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:08:03,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:08:03,436 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 02:08:03,568 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:08:03,569 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:08:03,907 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:08:03,907 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:08:04,110 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:08:04,110 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:08:04,111 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:08:04 BoogieIcfgContainer [2024-06-28 02:08:04,111 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:08:04,112 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:08:04,112 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:08:04,115 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:08:04,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:08:02" (1/4) ... [2024-06-28 02:08:04,115 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@772a8be7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:08:04, skipping insertion in model container [2024-06-28 02:08:04,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:08:02" (2/4) ... [2024-06-28 02:08:04,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@772a8be7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:08:04, skipping insertion in model container [2024-06-28 02:08:04,116 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 02:08:03" (3/4) ... [2024-06-28 02:08:04,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@772a8be7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:08:04, skipping insertion in model container [2024-06-28 02:08:04,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:08:04" (4/4) ... [2024-06-28 02:08:04,117 INFO L112 eAbstractionObserver]: Analyzing ICFG safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 02:08:04,130 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:08:04,130 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 02:08:04,130 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:08:04,166 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 02:08:04,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 02:08:04,220 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-28 02:08:04,220 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:08:04,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 77 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-28 02:08:04,223 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 02:08:04,227 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-06-28 02:08:04,236 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:08:04,244 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;@4913e473, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:08:04,245 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 02:08:04,248 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:08:04,248 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 02:08:04,248 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:08:04,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:04,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:08:04,249 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:08:04,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:04,278 INFO L85 PathProgramCache]: Analyzing trace with hash 431197062, now seen corresponding path program 1 times [2024-06-28 02:08:04,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:04,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958477393] [2024-06-28 02:08:04,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:04,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:05,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:05,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:05,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958477393] [2024-06-28 02:08:05,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958477393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:05,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:05,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:08:05,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324647610] [2024-06-28 02:08:05,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:05,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:08:05,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:05,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:08:05,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:08:05,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:08:05,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:05,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:05,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:08:05,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:06,017 INFO L124 PetriNetUnfolderBase]: 5028/7952 cut-off events. [2024-06-28 02:08:06,017 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-06-28 02:08:06,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15279 conditions, 7952 events. 5028/7952 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 50206 event pairs, 4250 based on Foata normal form. 248/7589 useless extension candidates. Maximal degree in co-relation 15267. Up to 7169 conditions per place. [2024-06-28 02:08:06,053 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 46 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2024-06-28 02:08:06,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 61 transitions, 239 flow [2024-06-28 02:08:06,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:08:06,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:08:06,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-06-28 02:08:06,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6737588652482269 [2024-06-28 02:08:06,064 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 95 transitions. [2024-06-28 02:08:06,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 61 transitions, 239 flow [2024-06-28 02:08:06,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 61 transitions, 234 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 02:08:06,068 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 129 flow [2024-06-28 02:08:06,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-06-28 02:08:06,073 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-28 02:08:06,073 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 129 flow [2024-06-28 02:08:06,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:06,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:06,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:06,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:08:06,074 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:08:06,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:06,075 INFO L85 PathProgramCache]: Analyzing trace with hash 2063536677, now seen corresponding path program 1 times [2024-06-28 02:08:06,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:06,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659470773] [2024-06-28 02:08:06,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:06,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:06,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:06,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:06,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659470773] [2024-06-28 02:08:06,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659470773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:06,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:06,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:08:06,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9495709] [2024-06-28 02:08:06,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:06,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:08:06,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:06,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:08:06,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:08:06,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:08:06,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:06,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:06,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:08:06,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:07,410 INFO L124 PetriNetUnfolderBase]: 5012/7928 cut-off events. [2024-06-28 02:08:07,411 INFO L125 PetriNetUnfolderBase]: For 847/847 co-relation queries the response was YES. [2024-06-28 02:08:07,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16903 conditions, 7928 events. 5012/7928 cut-off events. For 847/847 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 49953 event pairs, 3006 based on Foata normal form. 6/7384 useless extension candidates. Maximal degree in co-relation 16891. Up to 7138 conditions per place. [2024-06-28 02:08:07,532 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 55 selfloop transitions, 11 changer transitions 0/76 dead transitions. [2024-06-28 02:08:07,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 76 transitions, 340 flow [2024-06-28 02:08:07,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:08:07,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:08:07,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-06-28 02:08:07,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6223404255319149 [2024-06-28 02:08:07,533 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 129 flow. Second operand 4 states and 117 transitions. [2024-06-28 02:08:07,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 76 transitions, 340 flow [2024-06-28 02:08:07,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 76 transitions, 332 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:08:07,535 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 210 flow [2024-06-28 02:08:07,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2024-06-28 02:08:07,536 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 4 predicate places. [2024-06-28 02:08:07,536 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 210 flow [2024-06-28 02:08:07,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:07,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:07,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:07,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:08:07,537 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:08:07,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:07,537 INFO L85 PathProgramCache]: Analyzing trace with hash -455031107, now seen corresponding path program 1 times [2024-06-28 02:08:07,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:07,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65070465] [2024-06-28 02:08:07,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:07,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:07,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:07,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:07,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65070465] [2024-06-28 02:08:07,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65070465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:07,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:07,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:08:07,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10389921] [2024-06-28 02:08:07,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:07,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:08:07,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:07,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:08:07,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:08:07,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 47 [2024-06-28 02:08:07,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:07,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:07,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 47 [2024-06-28 02:08:07,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:07,986 INFO L124 PetriNetUnfolderBase]: 1824/3300 cut-off events. [2024-06-28 02:08:07,986 INFO L125 PetriNetUnfolderBase]: For 1103/1150 co-relation queries the response was YES. [2024-06-28 02:08:07,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7278 conditions, 3300 events. 1824/3300 cut-off events. For 1103/1150 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 22062 event pairs, 837 based on Foata normal form. 19/3127 useless extension candidates. Maximal degree in co-relation 7263. Up to 2216 conditions per place. [2024-06-28 02:08:07,999 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 43 selfloop transitions, 5 changer transitions 0/69 dead transitions. [2024-06-28 02:08:07,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 69 transitions, 320 flow [2024-06-28 02:08:08,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:08:08,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:08:08,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-06-28 02:08:08,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7375886524822695 [2024-06-28 02:08:08,001 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 210 flow. Second operand 3 states and 104 transitions. [2024-06-28 02:08:08,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 69 transitions, 320 flow [2024-06-28 02:08:08,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 69 transitions, 318 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-28 02:08:08,004 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 192 flow [2024-06-28 02:08:08,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-06-28 02:08:08,004 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 5 predicate places. [2024-06-28 02:08:08,004 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 192 flow [2024-06-28 02:08:08,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:08,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:08,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:08,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:08:08,005 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:08:08,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:08,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1129285700, now seen corresponding path program 1 times [2024-06-28 02:08:08,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:08,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497276453] [2024-06-28 02:08:08,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:08,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:09,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:09,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:09,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497276453] [2024-06-28 02:08:09,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497276453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:09,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:09,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:08:09,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261499834] [2024-06-28 02:08:09,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:09,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:08:09,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:09,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:08:09,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:08:09,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:08:09,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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 02:08:09,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:09,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:08:09,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:10,047 INFO L124 PetriNetUnfolderBase]: 4247/6744 cut-off events. [2024-06-28 02:08:10,047 INFO L125 PetriNetUnfolderBase]: For 3214/3222 co-relation queries the response was YES. [2024-06-28 02:08:10,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15806 conditions, 6744 events. 4247/6744 cut-off events. For 3214/3222 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 41242 event pairs, 2080 based on Foata normal form. 12/6543 useless extension candidates. Maximal degree in co-relation 15789. Up to 5994 conditions per place. [2024-06-28 02:08:10,070 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 68 selfloop transitions, 16 changer transitions 4/98 dead transitions. [2024-06-28 02:08:10,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 98 transitions, 502 flow [2024-06-28 02:08:10,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:08:10,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:08:10,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2024-06-28 02:08:10,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625531914893617 [2024-06-28 02:08:10,071 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 192 flow. Second operand 5 states and 147 transitions. [2024-06-28 02:08:10,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 98 transitions, 502 flow [2024-06-28 02:08:10,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 98 transitions, 486 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 02:08:10,074 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 292 flow [2024-06-28 02:08:10,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=292, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2024-06-28 02:08:10,075 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 10 predicate places. [2024-06-28 02:08:10,075 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 292 flow [2024-06-28 02:08:10,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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 02:08:10,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:10,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:10,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:08:10,075 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:08:10,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:10,076 INFO L85 PathProgramCache]: Analyzing trace with hash 800561989, now seen corresponding path program 1 times [2024-06-28 02:08:10,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:10,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382482316] [2024-06-28 02:08:10,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:10,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:10,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:10,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:10,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382482316] [2024-06-28 02:08:10,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382482316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:10,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:10,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:08:10,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26819159] [2024-06-28 02:08:10,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:10,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:08:10,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:10,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:08:10,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:08:10,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:08:10,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:10,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:10,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:08:10,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:11,395 INFO L124 PetriNetUnfolderBase]: 4290/6810 cut-off events. [2024-06-28 02:08:11,395 INFO L125 PetriNetUnfolderBase]: For 5000/5020 co-relation queries the response was YES. [2024-06-28 02:08:11,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17217 conditions, 6810 events. 4290/6810 cut-off events. For 5000/5020 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 41138 event pairs, 2491 based on Foata normal form. 16/6609 useless extension candidates. Maximal degree in co-relation 17196. Up to 6113 conditions per place. [2024-06-28 02:08:11,425 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 71 selfloop transitions, 9 changer transitions 0/88 dead transitions. [2024-06-28 02:08:11,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 88 transitions, 546 flow [2024-06-28 02:08:11,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:08:11,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:08:11,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-28 02:08:11,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4978723404255319 [2024-06-28 02:08:11,427 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 292 flow. Second operand 5 states and 117 transitions. [2024-06-28 02:08:11,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 88 transitions, 546 flow [2024-06-28 02:08:11,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 88 transitions, 536 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-06-28 02:08:11,431 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 369 flow [2024-06-28 02:08:11,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=369, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2024-06-28 02:08:11,432 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 15 predicate places. [2024-06-28 02:08:11,432 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 369 flow [2024-06-28 02:08:11,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:11,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:11,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:11,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:08:11,432 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:08:11,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:11,433 INFO L85 PathProgramCache]: Analyzing trace with hash -461786269, now seen corresponding path program 1 times [2024-06-28 02:08:11,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:11,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622744240] [2024-06-28 02:08:11,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:11,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:12,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:12,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:12,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622744240] [2024-06-28 02:08:12,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622744240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:12,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:12,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:08:12,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468018204] [2024-06-28 02:08:12,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:12,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:08:12,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:12,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:08:12,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:08:12,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:08:12,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 369 flow. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:12,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:12,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:08:12,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:13,779 INFO L124 PetriNetUnfolderBase]: 3752/6040 cut-off events. [2024-06-28 02:08:13,779 INFO L125 PetriNetUnfolderBase]: For 6298/6322 co-relation queries the response was YES. [2024-06-28 02:08:13,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16553 conditions, 6040 events. 3752/6040 cut-off events. For 6298/6322 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 36841 event pairs, 1422 based on Foata normal form. 21/5850 useless extension candidates. Maximal degree in co-relation 16528. Up to 5259 conditions per place. [2024-06-28 02:08:13,815 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 79 selfloop transitions, 21 changer transitions 0/110 dead transitions. [2024-06-28 02:08:13,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 110 transitions, 681 flow [2024-06-28 02:08:13,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:08:13,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:08:13,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2024-06-28 02:08:13,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5886524822695035 [2024-06-28 02:08:13,817 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 369 flow. Second operand 6 states and 166 transitions. [2024-06-28 02:08:13,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 110 transitions, 681 flow [2024-06-28 02:08:13,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 110 transitions, 668 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 02:08:13,822 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 415 flow [2024-06-28 02:08:13,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=415, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2024-06-28 02:08:13,823 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 18 predicate places. [2024-06-28 02:08:13,823 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 415 flow [2024-06-28 02:08:13,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:13,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:13,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:13,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:08:13,824 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:08:13,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:13,824 INFO L85 PathProgramCache]: Analyzing trace with hash -952380687, now seen corresponding path program 1 times [2024-06-28 02:08:13,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:13,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973261913] [2024-06-28 02:08:13,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:13,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:14,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:14,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:14,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973261913] [2024-06-28 02:08:14,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973261913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:14,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:14,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:08:14,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092446425] [2024-06-28 02:08:14,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:14,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:08:14,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:14,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:08:14,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:08:14,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:08:14,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 415 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:14,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:14,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:08:14,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:15,324 INFO L124 PetriNetUnfolderBase]: 5131/8081 cut-off events. [2024-06-28 02:08:15,325 INFO L125 PetriNetUnfolderBase]: For 10707/10707 co-relation queries the response was YES. [2024-06-28 02:08:15,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22658 conditions, 8081 events. 5131/8081 cut-off events. For 10707/10707 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 48936 event pairs, 2964 based on Foata normal form. 2/7832 useless extension candidates. Maximal degree in co-relation 22631. Up to 7287 conditions per place. [2024-06-28 02:08:15,367 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 86 selfloop transitions, 14 changer transitions 0/107 dead transitions. [2024-06-28 02:08:15,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 107 transitions, 759 flow [2024-06-28 02:08:15,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:08:15,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:08:15,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-28 02:08:15,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43465045592705165 [2024-06-28 02:08:15,369 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 415 flow. Second operand 7 states and 143 transitions. [2024-06-28 02:08:15,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 107 transitions, 759 flow [2024-06-28 02:08:15,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 107 transitions, 706 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 02:08:15,375 INFO L231 Difference]: Finished difference. Result has 77 places, 81 transitions, 504 flow [2024-06-28 02:08:15,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=504, PETRI_PLACES=77, PETRI_TRANSITIONS=81} [2024-06-28 02:08:15,376 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 24 predicate places. [2024-06-28 02:08:15,376 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 81 transitions, 504 flow [2024-06-28 02:08:15,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:15,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:15,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:15,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:08:15,377 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:08:15,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:15,377 INFO L85 PathProgramCache]: Analyzing trace with hash 534265316, now seen corresponding path program 1 times [2024-06-28 02:08:15,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:15,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747413965] [2024-06-28 02:08:15,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:15,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:15,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:15,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:15,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747413965] [2024-06-28 02:08:15,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747413965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:15,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:15,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:08:15,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521810531] [2024-06-28 02:08:15,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:15,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:08:15,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:15,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:08:15,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:08:15,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:08:15,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 81 transitions, 504 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:15,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:15,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:08:15,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:16,864 INFO L124 PetriNetUnfolderBase]: 4978/7915 cut-off events. [2024-06-28 02:08:16,864 INFO L125 PetriNetUnfolderBase]: For 13685/13767 co-relation queries the response was YES. [2024-06-28 02:08:16,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23626 conditions, 7915 events. 4978/7915 cut-off events. For 13685/13767 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 48818 event pairs, 2347 based on Foata normal form. 27/7660 useless extension candidates. Maximal degree in co-relation 23594. Up to 7023 conditions per place. [2024-06-28 02:08:16,907 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 82 selfloop transitions, 25 changer transitions 0/118 dead transitions. [2024-06-28 02:08:16,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 118 transitions, 841 flow [2024-06-28 02:08:16,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:08:16,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:08:16,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-28 02:08:16,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-06-28 02:08:16,909 INFO L175 Difference]: Start difference. First operand has 77 places, 81 transitions, 504 flow. Second operand 6 states and 142 transitions. [2024-06-28 02:08:16,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 118 transitions, 841 flow [2024-06-28 02:08:16,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 118 transitions, 835 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 02:08:16,918 INFO L231 Difference]: Finished difference. Result has 83 places, 90 transitions, 627 flow [2024-06-28 02:08:16,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=627, PETRI_PLACES=83, PETRI_TRANSITIONS=90} [2024-06-28 02:08:16,918 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 30 predicate places. [2024-06-28 02:08:16,918 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 90 transitions, 627 flow [2024-06-28 02:08:16,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:16,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:16,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:16,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:08:16,919 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:08:16,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:16,919 INFO L85 PathProgramCache]: Analyzing trace with hash 540961316, now seen corresponding path program 2 times [2024-06-28 02:08:16,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:16,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911122922] [2024-06-28 02:08:16,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:16,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:17,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:17,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:17,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911122922] [2024-06-28 02:08:17,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911122922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:17,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:17,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:08:17,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301602614] [2024-06-28 02:08:17,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:17,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:08:17,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:17,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:08:17,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:08:17,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:08:17,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 90 transitions, 627 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:17,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:17,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:08:17,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:18,427 INFO L124 PetriNetUnfolderBase]: 5114/8103 cut-off events. [2024-06-28 02:08:18,427 INFO L125 PetriNetUnfolderBase]: For 19356/19446 co-relation queries the response was YES. [2024-06-28 02:08:18,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26786 conditions, 8103 events. 5114/8103 cut-off events. For 19356/19446 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 50014 event pairs, 2086 based on Foata normal form. 19/7833 useless extension candidates. Maximal degree in co-relation 26750. Up to 7099 conditions per place. [2024-06-28 02:08:18,464 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 89 selfloop transitions, 32 changer transitions 0/132 dead transitions. [2024-06-28 02:08:18,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 132 transitions, 1078 flow [2024-06-28 02:08:18,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:08:18,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:08:18,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-28 02:08:18,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070921985815603 [2024-06-28 02:08:18,466 INFO L175 Difference]: Start difference. First operand has 83 places, 90 transitions, 627 flow. Second operand 6 states and 143 transitions. [2024-06-28 02:08:18,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 132 transitions, 1078 flow [2024-06-28 02:08:18,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 132 transitions, 1043 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-28 02:08:18,479 INFO L231 Difference]: Finished difference. Result has 88 places, 103 transitions, 798 flow [2024-06-28 02:08:18,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=798, PETRI_PLACES=88, PETRI_TRANSITIONS=103} [2024-06-28 02:08:18,480 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 35 predicate places. [2024-06-28 02:08:18,480 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 103 transitions, 798 flow [2024-06-28 02:08:18,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:18,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:18,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:18,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:08:18,481 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:08:18,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:18,481 INFO L85 PathProgramCache]: Analyzing trace with hash 540971236, now seen corresponding path program 1 times [2024-06-28 02:08:18,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:18,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311046092] [2024-06-28 02:08:18,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:18,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:18,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:19,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:19,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:19,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311046092] [2024-06-28 02:08:19,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311046092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:19,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:19,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:08:19,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591957545] [2024-06-28 02:08:19,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:19,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:08:19,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:19,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:08:19,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:08:19,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:08:19,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 103 transitions, 798 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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 02:08:19,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:19,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:08:19,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:20,370 INFO L124 PetriNetUnfolderBase]: 5246/8264 cut-off events. [2024-06-28 02:08:20,370 INFO L125 PetriNetUnfolderBase]: For 24011/24011 co-relation queries the response was YES. [2024-06-28 02:08:20,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28427 conditions, 8264 events. 5246/8264 cut-off events. For 24011/24011 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 50206 event pairs, 2500 based on Foata normal form. 2/8006 useless extension candidates. Maximal degree in co-relation 28388. Up to 7425 conditions per place. [2024-06-28 02:08:20,407 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 115 selfloop transitions, 19 changer transitions 0/141 dead transitions. [2024-06-28 02:08:20,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 141 transitions, 1193 flow [2024-06-28 02:08:20,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:08:20,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:08:20,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-28 02:08:20,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-06-28 02:08:20,409 INFO L175 Difference]: Start difference. First operand has 88 places, 103 transitions, 798 flow. Second operand 7 states and 154 transitions. [2024-06-28 02:08:20,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 141 transitions, 1193 flow [2024-06-28 02:08:20,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 141 transitions, 1145 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-28 02:08:20,427 INFO L231 Difference]: Finished difference. Result has 93 places, 107 transitions, 831 flow [2024-06-28 02:08:20,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=831, PETRI_PLACES=93, PETRI_TRANSITIONS=107} [2024-06-28 02:08:20,428 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 40 predicate places. [2024-06-28 02:08:20,428 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 107 transitions, 831 flow [2024-06-28 02:08:20,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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 02:08:20,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:20,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:20,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:08:20,429 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:08:20,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:20,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1551298198, now seen corresponding path program 1 times [2024-06-28 02:08:20,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:20,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580082816] [2024-06-28 02:08:20,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:20,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:21,116 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 02:08:21,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:21,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580082816] [2024-06-28 02:08:21,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580082816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:21,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:21,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:08:21,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801319477] [2024-06-28 02:08:21,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:21,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:08:21,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:21,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:08:21,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:08:21,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:08:21,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 107 transitions, 831 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:21,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:21,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:08:21,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:22,258 INFO L124 PetriNetUnfolderBase]: 4955/7803 cut-off events. [2024-06-28 02:08:22,261 INFO L125 PetriNetUnfolderBase]: For 30242/30423 co-relation queries the response was YES. [2024-06-28 02:08:22,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29059 conditions, 7803 events. 4955/7803 cut-off events. For 30242/30423 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 47528 event pairs, 2208 based on Foata normal form. 84/7476 useless extension candidates. Maximal degree in co-relation 29018. Up to 6907 conditions per place. [2024-06-28 02:08:22,298 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 97 selfloop transitions, 33 changer transitions 0/142 dead transitions. [2024-06-28 02:08:22,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 142 transitions, 1242 flow [2024-06-28 02:08:22,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:08:22,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:08:22,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-28 02:08:22,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070921985815603 [2024-06-28 02:08:22,300 INFO L175 Difference]: Start difference. First operand has 93 places, 107 transitions, 831 flow. Second operand 6 states and 143 transitions. [2024-06-28 02:08:22,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 142 transitions, 1242 flow [2024-06-28 02:08:22,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 142 transitions, 1181 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 02:08:22,321 INFO L231 Difference]: Finished difference. Result has 95 places, 116 transitions, 952 flow [2024-06-28 02:08:22,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=952, PETRI_PLACES=95, PETRI_TRANSITIONS=116} [2024-06-28 02:08:22,322 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 42 predicate places. [2024-06-28 02:08:22,322 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 116 transitions, 952 flow [2024-06-28 02:08:22,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:22,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:22,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:22,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:08:22,323 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:08:22,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:22,323 INFO L85 PathProgramCache]: Analyzing trace with hash -617642958, now seen corresponding path program 1 times [2024-06-28 02:08:22,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:22,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508778706] [2024-06-28 02:08:22,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:22,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:22,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:22,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:22,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508778706] [2024-06-28 02:08:22,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508778706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:22,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:22,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:08:22,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139346827] [2024-06-28 02:08:22,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:22,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:08:22,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:22,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:08:22,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:08:22,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:08:22,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 116 transitions, 952 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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 02:08:22,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:22,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:08:22,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:23,912 INFO L124 PetriNetUnfolderBase]: 5292/8333 cut-off events. [2024-06-28 02:08:23,912 INFO L125 PetriNetUnfolderBase]: For 31220/31220 co-relation queries the response was YES. [2024-06-28 02:08:23,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30731 conditions, 8333 events. 5292/8333 cut-off events. For 31220/31220 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 50232 event pairs, 2462 based on Foata normal form. 4/8074 useless extension candidates. Maximal degree in co-relation 30688. Up to 7429 conditions per place. [2024-06-28 02:08:23,969 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 139 selfloop transitions, 29 changer transitions 0/175 dead transitions. [2024-06-28 02:08:23,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 175 transitions, 1641 flow [2024-06-28 02:08:23,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:08:23,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:08:23,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 02:08:23,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48328267477203646 [2024-06-28 02:08:23,971 INFO L175 Difference]: Start difference. First operand has 95 places, 116 transitions, 952 flow. Second operand 7 states and 159 transitions. [2024-06-28 02:08:23,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 175 transitions, 1641 flow [2024-06-28 02:08:23,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 175 transitions, 1598 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 02:08:23,999 INFO L231 Difference]: Finished difference. Result has 103 places, 139 transitions, 1288 flow [2024-06-28 02:08:23,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1288, PETRI_PLACES=103, PETRI_TRANSITIONS=139} [2024-06-28 02:08:23,999 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 50 predicate places. [2024-06-28 02:08:24,000 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 139 transitions, 1288 flow [2024-06-28 02:08:24,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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 02:08:24,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:24,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:24,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:08:24,000 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:08:24,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:24,001 INFO L85 PathProgramCache]: Analyzing trace with hash -409770288, now seen corresponding path program 2 times [2024-06-28 02:08:24,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:24,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616899935] [2024-06-28 02:08:24,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:24,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:24,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:24,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:24,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616899935] [2024-06-28 02:08:24,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616899935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:24,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:24,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:08:24,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292425162] [2024-06-28 02:08:24,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:24,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:08:24,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:24,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:08:24,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:08:24,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:08:24,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 139 transitions, 1288 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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 02:08:24,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:24,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:08:24,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:25,814 INFO L124 PetriNetUnfolderBase]: 5376/8448 cut-off events. [2024-06-28 02:08:25,814 INFO L125 PetriNetUnfolderBase]: For 39002/39014 co-relation queries the response was YES. [2024-06-28 02:08:25,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32842 conditions, 8448 events. 5376/8448 cut-off events. For 39002/39014 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 51110 event pairs, 2219 based on Foata normal form. 12/8197 useless extension candidates. Maximal degree in co-relation 32794. Up to 7253 conditions per place. [2024-06-28 02:08:25,875 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 147 selfloop transitions, 51 changer transitions 0/205 dead transitions. [2024-06-28 02:08:25,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 205 transitions, 2062 flow [2024-06-28 02:08:25,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:08:25,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:08:25,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 02:08:25,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49544072948328266 [2024-06-28 02:08:25,878 INFO L175 Difference]: Start difference. First operand has 103 places, 139 transitions, 1288 flow. Second operand 7 states and 163 transitions. [2024-06-28 02:08:25,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 205 transitions, 2062 flow [2024-06-28 02:08:25,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 205 transitions, 2028 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-06-28 02:08:25,922 INFO L231 Difference]: Finished difference. Result has 111 places, 165 transitions, 1647 flow [2024-06-28 02:08:25,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1254, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1647, PETRI_PLACES=111, PETRI_TRANSITIONS=165} [2024-06-28 02:08:25,923 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 58 predicate places. [2024-06-28 02:08:25,923 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 165 transitions, 1647 flow [2024-06-28 02:08:25,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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 02:08:25,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:25,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:25,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:08:25,924 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:08:25,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:25,925 INFO L85 PathProgramCache]: Analyzing trace with hash -409623440, now seen corresponding path program 3 times [2024-06-28 02:08:25,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:25,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562411518] [2024-06-28 02:08:25,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:25,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:26,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:26,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:26,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562411518] [2024-06-28 02:08:26,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562411518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:26,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:26,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:08:26,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298984616] [2024-06-28 02:08:26,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:26,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:08:26,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:26,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:08:26,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:08:26,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:08:26,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 165 transitions, 1647 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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 02:08:26,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:26,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:08:26,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:27,723 INFO L124 PetriNetUnfolderBase]: 5395/8462 cut-off events. [2024-06-28 02:08:27,723 INFO L125 PetriNetUnfolderBase]: For 48380/48392 co-relation queries the response was YES. [2024-06-28 02:08:27,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35558 conditions, 8462 events. 5395/8462 cut-off events. For 48380/48392 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 51043 event pairs, 2232 based on Foata normal form. 8/8211 useless extension candidates. Maximal degree in co-relation 35505. Up to 7268 conditions per place. [2024-06-28 02:08:27,782 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 149 selfloop transitions, 54 changer transitions 0/210 dead transitions. [2024-06-28 02:08:27,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 210 transitions, 2301 flow [2024-06-28 02:08:27,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:08:27,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:08:27,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-28 02:08:27,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49848024316109424 [2024-06-28 02:08:27,784 INFO L175 Difference]: Start difference. First operand has 111 places, 165 transitions, 1647 flow. Second operand 7 states and 164 transitions. [2024-06-28 02:08:27,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 210 transitions, 2301 flow [2024-06-28 02:08:27,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 210 transitions, 2228 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-06-28 02:08:27,831 INFO L231 Difference]: Finished difference. Result has 117 places, 171 transitions, 1795 flow [2024-06-28 02:08:27,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1584, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1795, PETRI_PLACES=117, PETRI_TRANSITIONS=171} [2024-06-28 02:08:27,832 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 64 predicate places. [2024-06-28 02:08:27,832 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 171 transitions, 1795 flow [2024-06-28 02:08:27,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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 02:08:27,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:27,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:27,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:08:27,832 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:08:27,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:27,833 INFO L85 PathProgramCache]: Analyzing trace with hash 444357986, now seen corresponding path program 1 times [2024-06-28 02:08:27,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:27,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542092937] [2024-06-28 02:08:27,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:27,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:27,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:28,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:28,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:28,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542092937] [2024-06-28 02:08:28,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542092937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:28,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:28,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:08:28,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833362400] [2024-06-28 02:08:28,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:28,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:08:28,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:28,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:08:28,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:08:28,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:08:28,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 171 transitions, 1795 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 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 02:08:28,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:28,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:08:28,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:29,959 INFO L124 PetriNetUnfolderBase]: 5400/8476 cut-off events. [2024-06-28 02:08:29,959 INFO L125 PetriNetUnfolderBase]: For 51258/51258 co-relation queries the response was YES. [2024-06-28 02:08:29,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36211 conditions, 8476 events. 5400/8476 cut-off events. For 51258/51258 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 51157 event pairs, 2281 based on Foata normal form. 4/8220 useless extension candidates. Maximal degree in co-relation 36155. Up to 7601 conditions per place. [2024-06-28 02:08:30,010 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 182 selfloop transitions, 28 changer transitions 0/217 dead transitions. [2024-06-28 02:08:30,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 217 transitions, 2398 flow [2024-06-28 02:08:30,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:08:30,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:08:30,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-28 02:08:30,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-06-28 02:08:30,012 INFO L175 Difference]: Start difference. First operand has 117 places, 171 transitions, 1795 flow. Second operand 8 states and 176 transitions. [2024-06-28 02:08:30,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 217 transitions, 2398 flow [2024-06-28 02:08:30,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 217 transitions, 2311 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 02:08:30,056 INFO L231 Difference]: Finished difference. Result has 122 places, 174 transitions, 1817 flow [2024-06-28 02:08:30,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1710, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1817, PETRI_PLACES=122, PETRI_TRANSITIONS=174} [2024-06-28 02:08:30,056 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 69 predicate places. [2024-06-28 02:08:30,057 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 174 transitions, 1817 flow [2024-06-28 02:08:30,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 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 02:08:30,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:30,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:30,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:08:30,057 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:08:30,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:30,058 INFO L85 PathProgramCache]: Analyzing trace with hash -845723569, now seen corresponding path program 1 times [2024-06-28 02:08:30,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:30,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344911807] [2024-06-28 02:08:30,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:30,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:30,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:30,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:30,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:30,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344911807] [2024-06-28 02:08:30,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344911807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:30,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:30,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:08:30,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883461363] [2024-06-28 02:08:30,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:30,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:08:30,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:30,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:08:30,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:08:31,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:08:31,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 174 transitions, 1817 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 02:08:31,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:31,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:08:31,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:32,323 INFO L124 PetriNetUnfolderBase]: 5271/8254 cut-off events. [2024-06-28 02:08:32,323 INFO L125 PetriNetUnfolderBase]: For 63221/63527 co-relation queries the response was YES. [2024-06-28 02:08:32,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37117 conditions, 8254 events. 5271/8254 cut-off events. For 63221/63527 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 49970 event pairs, 1736 based on Foata normal form. 47/7841 useless extension candidates. Maximal degree in co-relation 37060. Up to 7152 conditions per place. [2024-06-28 02:08:32,386 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 159 selfloop transitions, 45 changer transitions 0/229 dead transitions. [2024-06-28 02:08:32,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 229 transitions, 2458 flow [2024-06-28 02:08:32,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:08:32,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:08:32,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 02:08:32,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-28 02:08:32,388 INFO L175 Difference]: Start difference. First operand has 122 places, 174 transitions, 1817 flow. Second operand 7 states and 175 transitions. [2024-06-28 02:08:32,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 229 transitions, 2458 flow [2024-06-28 02:08:32,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 229 transitions, 2377 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 02:08:32,489 INFO L231 Difference]: Finished difference. Result has 125 places, 184 transitions, 1944 flow [2024-06-28 02:08:32,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1736, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1944, PETRI_PLACES=125, PETRI_TRANSITIONS=184} [2024-06-28 02:08:32,490 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 72 predicate places. [2024-06-28 02:08:32,490 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 184 transitions, 1944 flow [2024-06-28 02:08:32,491 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 02:08:32,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:32,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:32,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:08:32,504 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:08:32,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:32,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1967270799, now seen corresponding path program 2 times [2024-06-28 02:08:32,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:32,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154428111] [2024-06-28 02:08:32,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:32,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:32,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:33,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:33,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:33,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154428111] [2024-06-28 02:08:33,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154428111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:33,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:33,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:08:33,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613635998] [2024-06-28 02:08:33,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:33,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:08:33,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:33,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:08:33,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:08:33,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:08:33,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 184 transitions, 1944 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 02:08:33,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:33,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:08:33,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:34,811 INFO L124 PetriNetUnfolderBase]: 5352/8410 cut-off events. [2024-06-28 02:08:34,811 INFO L125 PetriNetUnfolderBase]: For 72456/72786 co-relation queries the response was YES. [2024-06-28 02:08:34,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39414 conditions, 8410 events. 5352/8410 cut-off events. For 72456/72786 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 51424 event pairs, 1727 based on Foata normal form. 53/7988 useless extension candidates. Maximal degree in co-relation 39354. Up to 7077 conditions per place. [2024-06-28 02:08:34,896 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 154 selfloop transitions, 60 changer transitions 0/239 dead transitions. [2024-06-28 02:08:34,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 239 transitions, 2670 flow [2024-06-28 02:08:34,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:08:34,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:08:34,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 02:08:34,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227963525835866 [2024-06-28 02:08:34,902 INFO L175 Difference]: Start difference. First operand has 125 places, 184 transitions, 1944 flow. Second operand 7 states and 172 transitions. [2024-06-28 02:08:34,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 239 transitions, 2670 flow [2024-06-28 02:08:34,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 239 transitions, 2624 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-28 02:08:34,962 INFO L231 Difference]: Finished difference. Result has 131 places, 194 transitions, 2189 flow [2024-06-28 02:08:34,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1898, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2189, PETRI_PLACES=131, PETRI_TRANSITIONS=194} [2024-06-28 02:08:34,968 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 78 predicate places. [2024-06-28 02:08:34,968 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 194 transitions, 2189 flow [2024-06-28 02:08:34,969 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 02:08:34,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:34,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:34,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:08:34,969 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:08:34,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:34,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1971739232, now seen corresponding path program 1 times [2024-06-28 02:08:34,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:34,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577374369] [2024-06-28 02:08:34,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:34,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:35,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:35,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:35,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577374369] [2024-06-28 02:08:35,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577374369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:35,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:35,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:08:35,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467731923] [2024-06-28 02:08:35,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:35,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:08:35,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:35,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:08:35,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:08:35,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:08:35,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 194 transitions, 2189 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 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 02:08:35,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:35,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:08:35,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:37,211 INFO L124 PetriNetUnfolderBase]: 5683/8904 cut-off events. [2024-06-28 02:08:37,211 INFO L125 PetriNetUnfolderBase]: For 77782/77782 co-relation queries the response was YES. [2024-06-28 02:08:37,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42166 conditions, 8904 events. 5683/8904 cut-off events. For 77782/77782 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 54219 event pairs, 2271 based on Foata normal form. 2/8633 useless extension candidates. Maximal degree in co-relation 42103. Up to 7931 conditions per place. [2024-06-28 02:08:37,284 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 190 selfloop transitions, 39 changer transitions 0/236 dead transitions. [2024-06-28 02:08:37,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 236 transitions, 2843 flow [2024-06-28 02:08:37,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:08:37,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:08:37,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-28 02:08:37,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48024316109422494 [2024-06-28 02:08:37,286 INFO L175 Difference]: Start difference. First operand has 131 places, 194 transitions, 2189 flow. Second operand 7 states and 158 transitions. [2024-06-28 02:08:37,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 236 transitions, 2843 flow [2024-06-28 02:08:37,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 236 transitions, 2771 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 02:08:37,367 INFO L231 Difference]: Finished difference. Result has 136 places, 201 transitions, 2318 flow [2024-06-28 02:08:37,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2117, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2318, PETRI_PLACES=136, PETRI_TRANSITIONS=201} [2024-06-28 02:08:37,367 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 83 predicate places. [2024-06-28 02:08:37,367 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 201 transitions, 2318 flow [2024-06-28 02:08:37,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 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 02:08:37,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:37,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:37,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:08:37,368 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:08:37,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:37,368 INFO L85 PathProgramCache]: Analyzing trace with hash -840924273, now seen corresponding path program 1 times [2024-06-28 02:08:37,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:37,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921178011] [2024-06-28 02:08:37,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:37,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:38,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:38,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:38,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921178011] [2024-06-28 02:08:38,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921178011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:38,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:38,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:08:38,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106640780] [2024-06-28 02:08:38,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:38,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:08:38,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:38,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:08:38,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:08:38,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:08:38,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 201 transitions, 2318 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 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 02:08:38,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:38,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:08:38,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:39,511 INFO L124 PetriNetUnfolderBase]: 5725/8965 cut-off events. [2024-06-28 02:08:39,511 INFO L125 PetriNetUnfolderBase]: For 83034/83037 co-relation queries the response was YES. [2024-06-28 02:08:39,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43230 conditions, 8965 events. 5725/8965 cut-off events. For 83034/83037 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 54521 event pairs, 2277 based on Foata normal form. 6/8696 useless extension candidates. Maximal degree in co-relation 43164. Up to 7987 conditions per place. [2024-06-28 02:08:39,590 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 208 selfloop transitions, 34 changer transitions 0/249 dead transitions. [2024-06-28 02:08:39,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 249 transitions, 3002 flow [2024-06-28 02:08:39,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:08:39,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:08:39,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-28 02:08:39,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48138297872340424 [2024-06-28 02:08:39,592 INFO L175 Difference]: Start difference. First operand has 136 places, 201 transitions, 2318 flow. Second operand 8 states and 181 transitions. [2024-06-28 02:08:39,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 249 transitions, 3002 flow [2024-06-28 02:08:39,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 249 transitions, 2949 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-28 02:08:39,673 INFO L231 Difference]: Finished difference. Result has 142 places, 205 transitions, 2404 flow [2024-06-28 02:08:39,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2265, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2404, PETRI_PLACES=142, PETRI_TRANSITIONS=205} [2024-06-28 02:08:39,674 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 89 predicate places. [2024-06-28 02:08:39,674 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 205 transitions, 2404 flow [2024-06-28 02:08:39,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 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 02:08:39,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:39,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:39,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 02:08:39,674 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:08:39,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:39,679 INFO L85 PathProgramCache]: Analyzing trace with hash 880662097, now seen corresponding path program 2 times [2024-06-28 02:08:39,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:39,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145597167] [2024-06-28 02:08:39,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:39,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:40,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:40,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:40,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145597167] [2024-06-28 02:08:40,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145597167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:40,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:40,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:08:40,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104638659] [2024-06-28 02:08:40,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:40,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:08:40,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:40,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:08:40,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:08:40,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:08:40,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 205 transitions, 2404 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:40,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:40,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:08:40,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:41,673 INFO L124 PetriNetUnfolderBase]: 5715/8950 cut-off events. [2024-06-28 02:08:41,673 INFO L125 PetriNetUnfolderBase]: For 87680/87692 co-relation queries the response was YES. [2024-06-28 02:08:41,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43389 conditions, 8950 events. 5715/8950 cut-off events. For 87680/87692 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 54506 event pairs, 2168 based on Foata normal form. 8/8683 useless extension candidates. Maximal degree in co-relation 43321. Up to 7727 conditions per place. [2024-06-28 02:08:41,742 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 170 selfloop transitions, 71 changer transitions 0/248 dead transitions. [2024-06-28 02:08:41,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 248 transitions, 3096 flow [2024-06-28 02:08:41,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:08:41,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:08:41,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 02:08:41,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48632218844984804 [2024-06-28 02:08:41,744 INFO L175 Difference]: Start difference. First operand has 142 places, 205 transitions, 2404 flow. Second operand 7 states and 160 transitions. [2024-06-28 02:08:41,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 248 transitions, 3096 flow [2024-06-28 02:08:41,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 248 transitions, 3017 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 02:08:41,843 INFO L231 Difference]: Finished difference. Result has 146 places, 213 transitions, 2617 flow [2024-06-28 02:08:41,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2331, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2617, PETRI_PLACES=146, PETRI_TRANSITIONS=213} [2024-06-28 02:08:41,843 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 93 predicate places. [2024-06-28 02:08:41,844 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 213 transitions, 2617 flow [2024-06-28 02:08:41,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:41,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:41,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:41,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 02:08:41,844 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:08:41,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:41,845 INFO L85 PathProgramCache]: Analyzing trace with hash 880654161, now seen corresponding path program 3 times [2024-06-28 02:08:41,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:41,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432040063] [2024-06-28 02:08:41,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:41,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:42,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:42,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:42,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432040063] [2024-06-28 02:08:42,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432040063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:42,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:42,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:08:42,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359484167] [2024-06-28 02:08:42,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:42,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:08:42,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:42,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:08:42,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:08:42,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:08:42,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 213 transitions, 2617 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:42,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:42,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:08:42,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:44,140 INFO L124 PetriNetUnfolderBase]: 5437/8409 cut-off events. [2024-06-28 02:08:44,141 INFO L125 PetriNetUnfolderBase]: For 100802/101059 co-relation queries the response was YES. [2024-06-28 02:08:44,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43596 conditions, 8409 events. 5437/8409 cut-off events. For 100802/101059 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 50610 event pairs, 1555 based on Foata normal form. 32/8033 useless extension candidates. Maximal degree in co-relation 43525. Up to 6980 conditions per place. [2024-06-28 02:08:44,209 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 162 selfloop transitions, 74 changer transitions 0/267 dead transitions. [2024-06-28 02:08:44,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 267 transitions, 3399 flow [2024-06-28 02:08:44,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:08:44,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:08:44,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 02:08:44,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227963525835866 [2024-06-28 02:08:44,211 INFO L175 Difference]: Start difference. First operand has 146 places, 213 transitions, 2617 flow. Second operand 7 states and 172 transitions. [2024-06-28 02:08:44,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 267 transitions, 3399 flow [2024-06-28 02:08:44,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 267 transitions, 3283 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 02:08:44,316 INFO L231 Difference]: Finished difference. Result has 151 places, 224 transitions, 2877 flow [2024-06-28 02:08:44,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2501, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2877, PETRI_PLACES=151, PETRI_TRANSITIONS=224} [2024-06-28 02:08:44,317 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 98 predicate places. [2024-06-28 02:08:44,317 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 224 transitions, 2877 flow [2024-06-28 02:08:44,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:44,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:44,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:44,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 02:08:44,318 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:08:44,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:44,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1731099679, now seen corresponding path program 1 times [2024-06-28 02:08:44,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:44,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802926737] [2024-06-28 02:08:44,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:44,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:45,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:45,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:45,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802926737] [2024-06-28 02:08:45,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802926737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:45,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:45,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:08:45,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569136983] [2024-06-28 02:08:45,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:45,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:08:45,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:45,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:08:45,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:08:45,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:08:45,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 224 transitions, 2877 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:08:45,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:45,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:08:45,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:46,790 INFO L124 PetriNetUnfolderBase]: 5751/9004 cut-off events. [2024-06-28 02:08:46,790 INFO L125 PetriNetUnfolderBase]: For 106971/106971 co-relation queries the response was YES. [2024-06-28 02:08:46,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46722 conditions, 9004 events. 5751/9004 cut-off events. For 106971/106971 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 54624 event pairs, 1846 based on Foata normal form. 4/8733 useless extension candidates. Maximal degree in co-relation 46648. Up to 7957 conditions per place. [2024-06-28 02:08:46,866 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 257 selfloop transitions, 37 changer transitions 0/301 dead transitions. [2024-06-28 02:08:46,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 301 transitions, 3916 flow [2024-06-28 02:08:46,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:08:46,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:08:46,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 02:08:46,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-28 02:08:46,868 INFO L175 Difference]: Start difference. First operand has 151 places, 224 transitions, 2877 flow. Second operand 8 states and 192 transitions. [2024-06-28 02:08:46,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 301 transitions, 3916 flow [2024-06-28 02:08:46,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 301 transitions, 3805 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-06-28 02:08:46,999 INFO L231 Difference]: Finished difference. Result has 161 places, 245 transitions, 3158 flow [2024-06-28 02:08:46,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2773, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3158, PETRI_PLACES=161, PETRI_TRANSITIONS=245} [2024-06-28 02:08:46,999 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 108 predicate places. [2024-06-28 02:08:46,999 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 245 transitions, 3158 flow [2024-06-28 02:08:46,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:08:47,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:47,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:47,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:08:47,001 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:08:47,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:47,001 INFO L85 PathProgramCache]: Analyzing trace with hash -443871023, now seen corresponding path program 2 times [2024-06-28 02:08:47,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:47,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014893275] [2024-06-28 02:08:47,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:47,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:47,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:47,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:47,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014893275] [2024-06-28 02:08:47,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014893275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:47,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:47,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:08:47,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055671584] [2024-06-28 02:08:47,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:47,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:08:47,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:47,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:08:47,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:08:47,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:08:47,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 245 transitions, 3158 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:08:47,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:47,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:08:47,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:49,417 INFO L124 PetriNetUnfolderBase]: 5944/9278 cut-off events. [2024-06-28 02:08:49,417 INFO L125 PetriNetUnfolderBase]: For 111315/111315 co-relation queries the response was YES. [2024-06-28 02:08:49,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49331 conditions, 9278 events. 5944/9278 cut-off events. For 111315/111315 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 56200 event pairs, 1801 based on Foata normal form. 4/9005 useless extension candidates. Maximal degree in co-relation 49251. Up to 7949 conditions per place. [2024-06-28 02:08:49,499 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 263 selfloop transitions, 64 changer transitions 0/334 dead transitions. [2024-06-28 02:08:49,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 334 transitions, 4532 flow [2024-06-28 02:08:49,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:08:49,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:08:49,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 02:08:49,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-28 02:08:49,500 INFO L175 Difference]: Start difference. First operand has 161 places, 245 transitions, 3158 flow. Second operand 8 states and 197 transitions. [2024-06-28 02:08:49,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 334 transitions, 4532 flow [2024-06-28 02:08:49,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 334 transitions, 4470 flow, removed 30 selfloop flow, removed 1 redundant places. [2024-06-28 02:08:49,652 INFO L231 Difference]: Finished difference. Result has 171 places, 272 transitions, 3689 flow [2024-06-28 02:08:49,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3126, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3689, PETRI_PLACES=171, PETRI_TRANSITIONS=272} [2024-06-28 02:08:49,653 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 118 predicate places. [2024-06-28 02:08:49,653 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 272 transitions, 3689 flow [2024-06-28 02:08:49,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:08:49,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:49,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:49,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:08:49,654 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:08:49,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:49,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1694607971, now seen corresponding path program 3 times [2024-06-28 02:08:49,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:49,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117725195] [2024-06-28 02:08:49,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:49,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:50,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:50,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:50,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117725195] [2024-06-28 02:08:50,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117725195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:50,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:50,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:08:50,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554286157] [2024-06-28 02:08:50,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:50,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:08:50,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:50,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:08:50,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:08:50,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:08:50,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 272 transitions, 3689 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:08:50,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:50,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:08:50,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:52,353 INFO L124 PetriNetUnfolderBase]: 5992/9362 cut-off events. [2024-06-28 02:08:52,353 INFO L125 PetriNetUnfolderBase]: For 128032/128032 co-relation queries the response was YES. [2024-06-28 02:08:52,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52137 conditions, 9362 events. 5992/9362 cut-off events. For 128032/128032 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 56839 event pairs, 1825 based on Foata normal form. 4/9083 useless extension candidates. Maximal degree in co-relation 52051. Up to 7916 conditions per place. [2024-06-28 02:08:52,441 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 254 selfloop transitions, 84 changer transitions 0/345 dead transitions. [2024-06-28 02:08:52,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 345 transitions, 4875 flow [2024-06-28 02:08:52,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:08:52,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:08:52,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 02:08:52,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079787234042553 [2024-06-28 02:08:52,450 INFO L175 Difference]: Start difference. First operand has 171 places, 272 transitions, 3689 flow. Second operand 8 states and 191 transitions. [2024-06-28 02:08:52,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 345 transitions, 4875 flow [2024-06-28 02:08:52,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 345 transitions, 4799 flow, removed 37 selfloop flow, removed 1 redundant places. [2024-06-28 02:08:52,677 INFO L231 Difference]: Finished difference. Result has 180 places, 290 transitions, 4143 flow [2024-06-28 02:08:52,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3623, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4143, PETRI_PLACES=180, PETRI_TRANSITIONS=290} [2024-06-28 02:08:52,678 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 127 predicate places. [2024-06-28 02:08:52,678 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 290 transitions, 4143 flow [2024-06-28 02:08:52,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:08:52,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:52,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:52,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 02:08:52,679 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:08:52,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:52,680 INFO L85 PathProgramCache]: Analyzing trace with hash -849349007, now seen corresponding path program 1 times [2024-06-28 02:08:52,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:52,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681023036] [2024-06-28 02:08:52,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:52,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:53,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:53,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:53,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681023036] [2024-06-28 02:08:53,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681023036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:53,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:53,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:08:53,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820669711] [2024-06-28 02:08:53,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:53,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:08:53,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:53,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:08:53,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:08:53,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:08:53,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 290 transitions, 4143 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:08:53,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:53,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:08:53,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:55,525 INFO L124 PetriNetUnfolderBase]: 6060/9476 cut-off events. [2024-06-28 02:08:55,525 INFO L125 PetriNetUnfolderBase]: For 145848/145854 co-relation queries the response was YES. [2024-06-28 02:08:55,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54668 conditions, 9476 events. 6060/9476 cut-off events. For 145848/145854 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 57820 event pairs, 2194 based on Foata normal form. 12/9200 useless extension candidates. Maximal degree in co-relation 54577. Up to 8381 conditions per place. [2024-06-28 02:08:55,624 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 300 selfloop transitions, 38 changer transitions 0/345 dead transitions. [2024-06-28 02:08:55,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 345 transitions, 5041 flow [2024-06-28 02:08:55,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:08:55,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:08:55,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 203 transitions. [2024-06-28 02:08:55,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4799054373522459 [2024-06-28 02:08:55,640 INFO L175 Difference]: Start difference. First operand has 180 places, 290 transitions, 4143 flow. Second operand 9 states and 203 transitions. [2024-06-28 02:08:55,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 345 transitions, 5041 flow [2024-06-28 02:08:55,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 345 transitions, 4937 flow, removed 51 selfloop flow, removed 1 redundant places. [2024-06-28 02:08:55,904 INFO L231 Difference]: Finished difference. Result has 188 places, 293 transitions, 4185 flow [2024-06-28 02:08:55,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4043, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4185, PETRI_PLACES=188, PETRI_TRANSITIONS=293} [2024-06-28 02:08:55,908 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 135 predicate places. [2024-06-28 02:08:55,908 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 293 transitions, 4185 flow [2024-06-28 02:08:55,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:08:55,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:55,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:55,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 02:08:55,910 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:08:55,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:55,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1062451809, now seen corresponding path program 4 times [2024-06-28 02:08:55,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:55,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704276470] [2024-06-28 02:08:55,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:55,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:55,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:56,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:56,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:56,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704276470] [2024-06-28 02:08:56,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704276470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:56,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:56,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:08:56,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767243665] [2024-06-28 02:08:56,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:56,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:08:56,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:56,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:08:56,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:08:56,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:08:56,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 293 transitions, 4185 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:08:56,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:56,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:08:56,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:58,602 INFO L124 PetriNetUnfolderBase]: 6256/9611 cut-off events. [2024-06-28 02:08:58,603 INFO L125 PetriNetUnfolderBase]: For 154694/154706 co-relation queries the response was YES. [2024-06-28 02:08:58,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56204 conditions, 9611 events. 6256/9611 cut-off events. For 154694/154706 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 57396 event pairs, 1592 based on Foata normal form. 8/9375 useless extension candidates. Maximal degree in co-relation 56110. Up to 7502 conditions per place. [2024-06-28 02:08:58,712 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 265 selfloop transitions, 109 changer transitions 0/381 dead transitions. [2024-06-28 02:08:58,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 381 transitions, 5847 flow [2024-06-28 02:08:58,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:08:58,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:08:58,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-28 02:08:58,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5398936170212766 [2024-06-28 02:08:58,714 INFO L175 Difference]: Start difference. First operand has 188 places, 293 transitions, 4185 flow. Second operand 8 states and 203 transitions. [2024-06-28 02:08:58,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 381 transitions, 5847 flow [2024-06-28 02:08:58,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 381 transitions, 5710 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 02:08:58,966 INFO L231 Difference]: Finished difference. Result has 191 places, 313 transitions, 4677 flow [2024-06-28 02:08:58,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4048, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4677, PETRI_PLACES=191, PETRI_TRANSITIONS=313} [2024-06-28 02:08:58,967 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 138 predicate places. [2024-06-28 02:08:58,967 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 313 transitions, 4677 flow [2024-06-28 02:08:58,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:08:58,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:58,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:58,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 02:08:58,968 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:08:58,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:58,968 INFO L85 PathProgramCache]: Analyzing trace with hash 230329839, now seen corresponding path program 5 times [2024-06-28 02:08:58,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:58,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719747015] [2024-06-28 02:08:58,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:58,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:59,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:59,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:59,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719747015] [2024-06-28 02:08:59,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719747015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:59,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:59,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:08:59,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825672707] [2024-06-28 02:08:59,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:59,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:08:59,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:59,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:08:59,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:08:59,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:08:59,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 313 transitions, 4677 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:59,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:59,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:08:59,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:01,802 INFO L124 PetriNetUnfolderBase]: 6246/9597 cut-off events. [2024-06-28 02:09:01,803 INFO L125 PetriNetUnfolderBase]: For 171506/171518 co-relation queries the response was YES. [2024-06-28 02:09:01,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59022 conditions, 9597 events. 6246/9597 cut-off events. For 171506/171518 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 57401 event pairs, 1602 based on Foata normal form. 8/9361 useless extension candidates. Maximal degree in co-relation 58925. Up to 7498 conditions per place. [2024-06-28 02:09:01,916 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 257 selfloop transitions, 117 changer transitions 0/381 dead transitions. [2024-06-28 02:09:01,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 381 transitions, 6045 flow [2024-06-28 02:09:01,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:09:01,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:09:01,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 02:09:01,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292553191489362 [2024-06-28 02:09:01,918 INFO L175 Difference]: Start difference. First operand has 191 places, 313 transitions, 4677 flow. Second operand 8 states and 199 transitions. [2024-06-28 02:09:01,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 381 transitions, 6045 flow [2024-06-28 02:09:02,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 381 transitions, 5910 flow, removed 53 selfloop flow, removed 2 redundant places. [2024-06-28 02:09:02,268 INFO L231 Difference]: Finished difference. Result has 198 places, 320 transitions, 4941 flow [2024-06-28 02:09:02,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4562, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4941, PETRI_PLACES=198, PETRI_TRANSITIONS=320} [2024-06-28 02:09:02,268 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 145 predicate places. [2024-06-28 02:09:02,269 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 320 transitions, 4941 flow [2024-06-28 02:09:02,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:02,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:02,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:09:02,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 02:09:02,269 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:09:02,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:02,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1062691377, now seen corresponding path program 2 times [2024-06-28 02:09:02,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:02,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400730647] [2024-06-28 02:09:02,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:02,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:03,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:03,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:03,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400730647] [2024-06-28 02:09:03,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400730647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:03,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:03,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:09:03,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053658343] [2024-06-28 02:09:03,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:03,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:09:03,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:03,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:09:03,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:09:03,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:09:03,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 320 transitions, 4941 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:03,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:03,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:09:03,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:04,840 INFO L124 PetriNetUnfolderBase]: 6314/9885 cut-off events. [2024-06-28 02:09:04,840 INFO L125 PetriNetUnfolderBase]: For 177500/177515 co-relation queries the response was YES. [2024-06-28 02:09:04,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59801 conditions, 9885 events. 6314/9885 cut-off events. For 177500/177515 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 61025 event pairs, 1918 based on Foata normal form. 14/9593 useless extension candidates. Maximal degree in co-relation 59701. Up to 8384 conditions per place. [2024-06-28 02:09:04,958 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 276 selfloop transitions, 86 changer transitions 0/369 dead transitions. [2024-06-28 02:09:04,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 369 transitions, 5895 flow [2024-06-28 02:09:04,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:09:04,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:09:04,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-28 02:09:04,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4867021276595745 [2024-06-28 02:09:04,960 INFO L175 Difference]: Start difference. First operand has 198 places, 320 transitions, 4941 flow. Second operand 8 states and 183 transitions. [2024-06-28 02:09:04,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 369 transitions, 5895 flow [2024-06-28 02:09:05,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 369 transitions, 5659 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 02:09:05,317 INFO L231 Difference]: Finished difference. Result has 202 places, 326 transitions, 4994 flow [2024-06-28 02:09:05,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4705, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4994, PETRI_PLACES=202, PETRI_TRANSITIONS=326} [2024-06-28 02:09:05,317 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 149 predicate places. [2024-06-28 02:09:05,317 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 326 transitions, 4994 flow [2024-06-28 02:09:05,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:05,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:05,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:09:05,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 02:09:05,318 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:09:05,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:05,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1347782319, now seen corresponding path program 6 times [2024-06-28 02:09:05,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:05,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516515066] [2024-06-28 02:09:05,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:05,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:06,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:06,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:06,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516515066] [2024-06-28 02:09:06,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516515066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:06,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:06,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:09:06,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622774496] [2024-06-28 02:09:06,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:06,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:09:06,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:06,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:09:06,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:09:06,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:09:06,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 326 transitions, 4994 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:06,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:06,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:09:06,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:08,012 INFO L124 PetriNetUnfolderBase]: 6294/9651 cut-off events. [2024-06-28 02:09:08,013 INFO L125 PetriNetUnfolderBase]: For 184508/184520 co-relation queries the response was YES. [2024-06-28 02:09:08,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60007 conditions, 9651 events. 6294/9651 cut-off events. For 184508/184520 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 57578 event pairs, 1543 based on Foata normal form. 12/9425 useless extension candidates. Maximal degree in co-relation 59906. Up to 7586 conditions per place. [2024-06-28 02:09:08,125 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 259 selfloop transitions, 125 changer transitions 0/391 dead transitions. [2024-06-28 02:09:08,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 391 transitions, 6257 flow [2024-06-28 02:09:08,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:09:08,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:09:08,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 02:09:08,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-28 02:09:08,127 INFO L175 Difference]: Start difference. First operand has 202 places, 326 transitions, 4994 flow. Second operand 8 states and 197 transitions. [2024-06-28 02:09:08,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 391 transitions, 6257 flow [2024-06-28 02:09:08,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 391 transitions, 6020 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-28 02:09:08,517 INFO L231 Difference]: Finished difference. Result has 205 places, 333 transitions, 5177 flow [2024-06-28 02:09:08,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4757, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5177, PETRI_PLACES=205, PETRI_TRANSITIONS=333} [2024-06-28 02:09:08,519 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 152 predicate places. [2024-06-28 02:09:08,520 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 333 transitions, 5177 flow [2024-06-28 02:09:08,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:08,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:08,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:09:08,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:09:08,520 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:09:08,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:08,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1358266767, now seen corresponding path program 3 times [2024-06-28 02:09:08,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:08,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751942125] [2024-06-28 02:09:08,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:08,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:09,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:09,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:09,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751942125] [2024-06-28 02:09:09,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751942125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:09,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:09,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:09:09,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641216818] [2024-06-28 02:09:09,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:09,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:09:09,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:09,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:09:09,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:09:09,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:09:09,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 333 transitions, 5177 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:09,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:09,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:09:09,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:11,060 INFO L124 PetriNetUnfolderBase]: 6362/9957 cut-off events. [2024-06-28 02:09:11,060 INFO L125 PetriNetUnfolderBase]: For 196058/196064 co-relation queries the response was YES. [2024-06-28 02:09:11,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61450 conditions, 9957 events. 6362/9957 cut-off events. For 196058/196064 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 61295 event pairs, 1892 based on Foata normal form. 12/9663 useless extension candidates. Maximal degree in co-relation 61347. Up to 8255 conditions per place. [2024-06-28 02:09:11,177 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 290 selfloop transitions, 90 changer transitions 0/387 dead transitions. [2024-06-28 02:09:11,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 387 transitions, 6365 flow [2024-06-28 02:09:11,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:09:11,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:09:11,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 198 transitions. [2024-06-28 02:09:11,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-06-28 02:09:11,179 INFO L175 Difference]: Start difference. First operand has 205 places, 333 transitions, 5177 flow. Second operand 9 states and 198 transitions. [2024-06-28 02:09:11,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 387 transitions, 6365 flow [2024-06-28 02:09:11,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 387 transitions, 6237 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 02:09:11,582 INFO L231 Difference]: Finished difference. Result has 212 places, 341 transitions, 5416 flow [2024-06-28 02:09:11,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5049, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5416, PETRI_PLACES=212, PETRI_TRANSITIONS=341} [2024-06-28 02:09:11,583 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 159 predicate places. [2024-06-28 02:09:11,583 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 341 transitions, 5416 flow [2024-06-28 02:09:11,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:11,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:11,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:09:11,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 02:09:11,584 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:09:11,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:11,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1357910577, now seen corresponding path program 4 times [2024-06-28 02:09:11,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:11,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599785958] [2024-06-28 02:09:11,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:11,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:12,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:12,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:12,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599785958] [2024-06-28 02:09:12,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599785958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:12,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:12,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:09:12,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130453957] [2024-06-28 02:09:12,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:12,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:09:12,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:12,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:09:12,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:09:12,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:09:12,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 341 transitions, 5416 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:12,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:12,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:09:12,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:14,178 INFO L124 PetriNetUnfolderBase]: 6346/9912 cut-off events. [2024-06-28 02:09:14,179 INFO L125 PetriNetUnfolderBase]: For 205382/205388 co-relation queries the response was YES. [2024-06-28 02:09:14,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61850 conditions, 9912 events. 6346/9912 cut-off events. For 205382/205388 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 60812 event pairs, 2031 based on Foata normal form. 12/9625 useless extension candidates. Maximal degree in co-relation 61745. Up to 8509 conditions per place. [2024-06-28 02:09:14,305 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 295 selfloop transitions, 82 changer transitions 0/384 dead transitions. [2024-06-28 02:09:14,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 384 transitions, 6318 flow [2024-06-28 02:09:14,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:09:14,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:09:14,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 196 transitions. [2024-06-28 02:09:14,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46335697399527187 [2024-06-28 02:09:14,307 INFO L175 Difference]: Start difference. First operand has 212 places, 341 transitions, 5416 flow. Second operand 9 states and 196 transitions. [2024-06-28 02:09:14,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 384 transitions, 6318 flow [2024-06-28 02:09:14,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 384 transitions, 6142 flow, removed 55 selfloop flow, removed 3 redundant places. [2024-06-28 02:09:14,737 INFO L231 Difference]: Finished difference. Result has 218 places, 341 transitions, 5412 flow [2024-06-28 02:09:14,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5240, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5412, PETRI_PLACES=218, PETRI_TRANSITIONS=341} [2024-06-28 02:09:14,738 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 165 predicate places. [2024-06-28 02:09:14,738 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 341 transitions, 5412 flow [2024-06-28 02:09:14,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:14,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:14,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:09:14,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 02:09:14,739 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:09:14,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:14,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1441325116, now seen corresponding path program 1 times [2024-06-28 02:09:14,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:14,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771697062] [2024-06-28 02:09:14,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:14,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:15,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:15,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:15,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771697062] [2024-06-28 02:09:15,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771697062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:15,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:15,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:09:15,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185754462] [2024-06-28 02:09:15,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:15,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:09:15,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:15,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:09:15,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:09:15,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:09:15,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 341 transitions, 5412 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 02:09:15,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:15,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:09:15,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:18,006 INFO L124 PetriNetUnfolderBase]: 6087/9599 cut-off events. [2024-06-28 02:09:18,006 INFO L125 PetriNetUnfolderBase]: For 216121/216342 co-relation queries the response was YES. [2024-06-28 02:09:18,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60859 conditions, 9599 events. 6087/9599 cut-off events. For 216121/216342 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 59798 event pairs, 1343 based on Foata normal form. 23/9109 useless extension candidates. Maximal degree in co-relation 60751. Up to 8072 conditions per place. [2024-06-28 02:09:18,097 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 268 selfloop transitions, 60 changer transitions 0/396 dead transitions. [2024-06-28 02:09:18,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 396 transitions, 6314 flow [2024-06-28 02:09:18,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:09:18,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:09:18,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-28 02:09:18,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132978723404256 [2024-06-28 02:09:18,099 INFO L175 Difference]: Start difference. First operand has 218 places, 341 transitions, 5412 flow. Second operand 8 states and 193 transitions. [2024-06-28 02:09:18,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 396 transitions, 6314 flow [2024-06-28 02:09:18,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 396 transitions, 6125 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 02:09:18,416 INFO L231 Difference]: Finished difference. Result has 220 places, 347 transitions, 5447 flow [2024-06-28 02:09:18,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5223, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5447, PETRI_PLACES=220, PETRI_TRANSITIONS=347} [2024-06-28 02:09:18,416 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 167 predicate places. [2024-06-28 02:09:18,416 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 347 transitions, 5447 flow [2024-06-28 02:09:18,417 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 02:09:18,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:18,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:09:18,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 02:09:18,417 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:09:18,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:18,417 INFO L85 PathProgramCache]: Analyzing trace with hash -880003354, now seen corresponding path program 2 times [2024-06-28 02:09:18,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:18,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801510253] [2024-06-28 02:09:18,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:18,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:19,841 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 02:09:19,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:19,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801510253] [2024-06-28 02:09:19,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801510253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:19,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:19,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:09:19,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74615462] [2024-06-28 02:09:19,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:19,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:09:19,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:19,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:09:19,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:09:19,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:09:19,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 347 transitions, 5447 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 02:09:19,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:19,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:09:19,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:21,861 INFO L124 PetriNetUnfolderBase]: 6134/9669 cut-off events. [2024-06-28 02:09:21,861 INFO L125 PetriNetUnfolderBase]: For 229964/230241 co-relation queries the response was YES. [2024-06-28 02:09:21,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62687 conditions, 9669 events. 6134/9669 cut-off events. For 229964/230241 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 60357 event pairs, 1611 based on Foata normal form. 20/9170 useless extension candidates. Maximal degree in co-relation 62576. Up to 8107 conditions per place. [2024-06-28 02:09:21,981 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 267 selfloop transitions, 68 changer transitions 0/403 dead transitions. [2024-06-28 02:09:21,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 403 transitions, 6420 flow [2024-06-28 02:09:21,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:09:21,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:09:21,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 02:09:21,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159574468085106 [2024-06-28 02:09:21,983 INFO L175 Difference]: Start difference. First operand has 220 places, 347 transitions, 5447 flow. Second operand 8 states and 194 transitions. [2024-06-28 02:09:21,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 403 transitions, 6420 flow [2024-06-28 02:09:22,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 403 transitions, 6291 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-28 02:09:22,386 INFO L231 Difference]: Finished difference. Result has 225 places, 352 transitions, 5581 flow [2024-06-28 02:09:22,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5318, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5581, PETRI_PLACES=225, PETRI_TRANSITIONS=352} [2024-06-28 02:09:22,386 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 172 predicate places. [2024-06-28 02:09:22,387 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 352 transitions, 5581 flow [2024-06-28 02:09:22,387 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 02:09:22,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:22,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:09:22,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 02:09:22,387 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:09:22,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:22,388 INFO L85 PathProgramCache]: Analyzing trace with hash -877172062, now seen corresponding path program 1 times [2024-06-28 02:09:22,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:22,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541819494] [2024-06-28 02:09:22,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:22,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:23,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:23,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:23,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541819494] [2024-06-28 02:09:23,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541819494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:23,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:23,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:09:23,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791114567] [2024-06-28 02:09:23,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:23,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:09:23,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:23,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:09:23,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:09:23,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:09:23,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 352 transitions, 5581 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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 02:09:23,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:23,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:09:23,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:25,558 INFO L124 PetriNetUnfolderBase]: 6574/10220 cut-off events. [2024-06-28 02:09:25,558 INFO L125 PetriNetUnfolderBase]: For 233066/233066 co-relation queries the response was YES. [2024-06-28 02:09:25,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65778 conditions, 10220 events. 6574/10220 cut-off events. For 233066/233066 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 62585 event pairs, 1805 based on Foata normal form. 4/9933 useless extension candidates. Maximal degree in co-relation 65664. Up to 9017 conditions per place. [2024-06-28 02:09:25,685 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 354 selfloop transitions, 60 changer transitions 0/421 dead transitions. [2024-06-28 02:09:25,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 421 transitions, 6805 flow [2024-06-28 02:09:25,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:09:25,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:09:25,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-28 02:09:25,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4988179669030733 [2024-06-28 02:09:25,687 INFO L175 Difference]: Start difference. First operand has 225 places, 352 transitions, 5581 flow. Second operand 9 states and 211 transitions. [2024-06-28 02:09:25,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 421 transitions, 6805 flow [2024-06-28 02:09:26,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 421 transitions, 6701 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 02:09:26,143 INFO L231 Difference]: Finished difference. Result has 233 places, 361 transitions, 5821 flow [2024-06-28 02:09:26,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5478, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5821, PETRI_PLACES=233, PETRI_TRANSITIONS=361} [2024-06-28 02:09:26,143 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 180 predicate places. [2024-06-28 02:09:26,143 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 361 transitions, 5821 flow [2024-06-28 02:09:26,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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 02:09:26,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:26,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:09:26,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 02:09:26,144 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:09:26,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:26,144 INFO L85 PathProgramCache]: Analyzing trace with hash -760993114, now seen corresponding path program 3 times [2024-06-28 02:09:26,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:26,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98381398] [2024-06-28 02:09:26,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:26,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:27,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:27,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:27,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98381398] [2024-06-28 02:09:27,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98381398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:27,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:27,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:09:27,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627779071] [2024-06-28 02:09:27,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:27,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:09:27,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:27,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:09:27,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:09:27,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:09:27,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 361 transitions, 5821 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:27,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:27,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:09:27,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:29,670 INFO L124 PetriNetUnfolderBase]: 6232/9813 cut-off events. [2024-06-28 02:09:29,670 INFO L125 PetriNetUnfolderBase]: For 256418/256699 co-relation queries the response was YES. [2024-06-28 02:09:29,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65191 conditions, 9813 events. 6232/9813 cut-off events. For 256418/256699 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 61223 event pairs, 1551 based on Foata normal form. 18/9312 useless extension candidates. Maximal degree in co-relation 65073. Up to 8055 conditions per place. [2024-06-28 02:09:29,780 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 257 selfloop transitions, 88 changer transitions 0/417 dead transitions. [2024-06-28 02:09:29,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 417 transitions, 6822 flow [2024-06-28 02:09:29,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:09:29,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:09:29,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 02:09:29,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186170212765957 [2024-06-28 02:09:29,789 INFO L175 Difference]: Start difference. First operand has 233 places, 361 transitions, 5821 flow. Second operand 8 states and 195 transitions. [2024-06-28 02:09:29,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 417 transitions, 6822 flow [2024-06-28 02:09:30,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 417 transitions, 6653 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 02:09:30,228 INFO L231 Difference]: Finished difference. Result has 236 places, 363 transitions, 5881 flow [2024-06-28 02:09:30,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5652, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5881, PETRI_PLACES=236, PETRI_TRANSITIONS=363} [2024-06-28 02:09:30,229 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 183 predicate places. [2024-06-28 02:09:30,229 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 363 transitions, 5881 flow [2024-06-28 02:09:30,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:30,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:30,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:09:30,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 02:09:30,230 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:09:30,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:30,230 INFO L85 PathProgramCache]: Analyzing trace with hash -760987162, now seen corresponding path program 2 times [2024-06-28 02:09:30,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:30,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069146572] [2024-06-28 02:09:30,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:30,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:31,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:31,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:31,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069146572] [2024-06-28 02:09:31,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069146572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:31,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:31,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:09:31,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31122104] [2024-06-28 02:09:31,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:31,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:09:31,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:31,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:09:31,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:09:31,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:09:31,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 363 transitions, 5881 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:09:31,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:31,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:09:31,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:33,962 INFO L124 PetriNetUnfolderBase]: 6701/10419 cut-off events. [2024-06-28 02:09:33,963 INFO L125 PetriNetUnfolderBase]: For 259473/259473 co-relation queries the response was YES. [2024-06-28 02:09:34,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68591 conditions, 10419 events. 6701/10419 cut-off events. For 259473/259473 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 64057 event pairs, 1747 based on Foata normal form. 4/10126 useless extension candidates. Maximal degree in co-relation 68472. Up to 8879 conditions per place. [2024-06-28 02:09:34,093 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 328 selfloop transitions, 94 changer transitions 0/429 dead transitions. [2024-06-28 02:09:34,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 429 transitions, 7093 flow [2024-06-28 02:09:34,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:09:34,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:09:34,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-28 02:09:34,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059101654846335 [2024-06-28 02:09:34,094 INFO L175 Difference]: Start difference. First operand has 236 places, 363 transitions, 5881 flow. Second operand 9 states and 214 transitions. [2024-06-28 02:09:34,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 429 transitions, 7093 flow [2024-06-28 02:09:34,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 429 transitions, 6896 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 02:09:34,610 INFO L231 Difference]: Finished difference. Result has 239 places, 367 transitions, 5968 flow [2024-06-28 02:09:34,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5684, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5968, PETRI_PLACES=239, PETRI_TRANSITIONS=367} [2024-06-28 02:09:34,611 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 186 predicate places. [2024-06-28 02:09:34,611 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 367 transitions, 5968 flow [2024-06-28 02:09:34,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:09:34,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:34,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:09:34,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 02:09:34,612 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:09:34,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:34,612 INFO L85 PathProgramCache]: Analyzing trace with hash -760785352, now seen corresponding path program 3 times [2024-06-28 02:09:34,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:34,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167809940] [2024-06-28 02:09:34,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:34,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:35,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:35,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:35,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167809940] [2024-06-28 02:09:35,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167809940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:35,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:35,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:09:35,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930689105] [2024-06-28 02:09:35,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:35,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:09:35,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:35,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:09:35,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:09:35,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:09:35,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 367 transitions, 5968 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:09:35,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:35,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:09:35,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:38,119 INFO L124 PetriNetUnfolderBase]: 6753/10485 cut-off events. [2024-06-28 02:09:38,120 INFO L125 PetriNetUnfolderBase]: For 269919/269919 co-relation queries the response was YES. [2024-06-28 02:09:38,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69530 conditions, 10485 events. 6753/10485 cut-off events. For 269919/269919 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 64386 event pairs, 1734 based on Foata normal form. 4/10194 useless extension candidates. Maximal degree in co-relation 69410. Up to 8951 conditions per place. [2024-06-28 02:09:38,231 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 329 selfloop transitions, 98 changer transitions 0/434 dead transitions. [2024-06-28 02:09:38,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 434 transitions, 7210 flow [2024-06-28 02:09:38,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:09:38,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:09:38,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-28 02:09:38,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059101654846335 [2024-06-28 02:09:38,233 INFO L175 Difference]: Start difference. First operand has 239 places, 367 transitions, 5968 flow. Second operand 9 states and 214 transitions. [2024-06-28 02:09:38,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 434 transitions, 7210 flow [2024-06-28 02:09:38,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 434 transitions, 6972 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 02:09:38,706 INFO L231 Difference]: Finished difference. Result has 241 places, 371 transitions, 6030 flow [2024-06-28 02:09:38,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5730, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6030, PETRI_PLACES=241, PETRI_TRANSITIONS=371} [2024-06-28 02:09:38,707 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 188 predicate places. [2024-06-28 02:09:38,708 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 371 transitions, 6030 flow [2024-06-28 02:09:38,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:09:38,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:38,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:09:38,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 02:09:38,708 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:09:38,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:38,709 INFO L85 PathProgramCache]: Analyzing trace with hash -760777912, now seen corresponding path program 4 times [2024-06-28 02:09:38,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:38,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471773436] [2024-06-28 02:09:38,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:38,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:38,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:39,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:39,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:39,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471773436] [2024-06-28 02:09:39,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471773436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:39,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:39,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:09:39,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289305816] [2024-06-28 02:09:39,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:39,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:09:39,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:39,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:09:39,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:09:40,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:09:40,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 371 transitions, 6030 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:09:40,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:40,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:09:40,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:42,342 INFO L124 PetriNetUnfolderBase]: 6849/10636 cut-off events. [2024-06-28 02:09:42,342 INFO L125 PetriNetUnfolderBase]: For 283533/283533 co-relation queries the response was YES. [2024-06-28 02:09:42,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71097 conditions, 10636 events. 6849/10636 cut-off events. For 283533/283533 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 65468 event pairs, 1743 based on Foata normal form. 4/10339 useless extension candidates. Maximal degree in co-relation 70976. Up to 8848 conditions per place. [2024-06-28 02:09:42,474 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 333 selfloop transitions, 116 changer transitions 0/456 dead transitions. [2024-06-28 02:09:42,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 456 transitions, 7523 flow [2024-06-28 02:09:42,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:09:42,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:09:42,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 239 transitions. [2024-06-28 02:09:42,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085106382978724 [2024-06-28 02:09:42,476 INFO L175 Difference]: Start difference. First operand has 241 places, 371 transitions, 6030 flow. Second operand 10 states and 239 transitions. [2024-06-28 02:09:42,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 456 transitions, 7523 flow [2024-06-28 02:09:43,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 456 transitions, 7352 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-28 02:09:43,063 INFO L231 Difference]: Finished difference. Result has 248 places, 381 transitions, 6351 flow [2024-06-28 02:09:43,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5859, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6351, PETRI_PLACES=248, PETRI_TRANSITIONS=381} [2024-06-28 02:09:43,064 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 195 predicate places. [2024-06-28 02:09:43,064 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 381 transitions, 6351 flow [2024-06-28 02:09:43,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:09:43,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:43,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:09:43,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 02:09:43,064 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:09:43,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:43,065 INFO L85 PathProgramCache]: Analyzing trace with hash 80872678, now seen corresponding path program 1 times [2024-06-28 02:09:43,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:43,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760684929] [2024-06-28 02:09:43,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:43,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:43,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:43,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:43,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760684929] [2024-06-28 02:09:43,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760684929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:43,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:43,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:09:43,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164942044] [2024-06-28 02:09:43,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:43,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:09:43,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:43,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:09:43,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:09:43,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:09:43,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 381 transitions, 6351 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 02:09:43,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:43,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:09:43,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:45,869 INFO L124 PetriNetUnfolderBase]: 6985/10872 cut-off events. [2024-06-28 02:09:45,870 INFO L125 PetriNetUnfolderBase]: For 304218/304218 co-relation queries the response was YES. [2024-06-28 02:09:45,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73370 conditions, 10872 events. 6985/10872 cut-off events. For 304218/304218 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 67311 event pairs, 2213 based on Foata normal form. 4/10558 useless extension candidates. Maximal degree in co-relation 73247. Up to 9559 conditions per place. [2024-06-28 02:09:46,020 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 375 selfloop transitions, 64 changer transitions 0/446 dead transitions. [2024-06-28 02:09:46,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 446 transitions, 7902 flow [2024-06-28 02:09:46,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:09:46,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:09:46,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 02:09:46,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49544072948328266 [2024-06-28 02:09:46,022 INFO L175 Difference]: Start difference. First operand has 248 places, 381 transitions, 6351 flow. Second operand 7 states and 163 transitions. [2024-06-28 02:09:46,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 446 transitions, 7902 flow [2024-06-28 02:09:46,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 446 transitions, 7721 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 02:09:46,867 INFO L231 Difference]: Finished difference. Result has 250 places, 401 transitions, 6668 flow [2024-06-28 02:09:46,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6170, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6668, PETRI_PLACES=250, PETRI_TRANSITIONS=401} [2024-06-28 02:09:46,867 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 197 predicate places. [2024-06-28 02:09:46,867 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 401 transitions, 6668 flow [2024-06-28 02:09:46,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 02:09:46,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:46,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:09:46,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 02:09:46,868 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:09:46,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:46,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1423938590, now seen corresponding path program 4 times [2024-06-28 02:09:46,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:46,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290723951] [2024-06-28 02:09:46,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:46,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:48,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:48,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:48,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290723951] [2024-06-28 02:09:48,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290723951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:48,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:48,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:09:48,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323640409] [2024-06-28 02:09:48,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:48,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:09:48,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:48,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:09:48,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:09:48,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:09:48,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 401 transitions, 6668 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 02:09:48,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:48,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:09:48,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:50,600 INFO L124 PetriNetUnfolderBase]: 6537/10135 cut-off events. [2024-06-28 02:09:50,600 INFO L125 PetriNetUnfolderBase]: For 319857/320063 co-relation queries the response was YES. [2024-06-28 02:09:50,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71595 conditions, 10135 events. 6537/10135 cut-off events. For 319857/320063 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 62411 event pairs, 1441 based on Foata normal form. 23/9693 useless extension candidates. Maximal degree in co-relation 71469. Up to 8189 conditions per place. [2024-06-28 02:09:50,735 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 262 selfloop transitions, 117 changer transitions 0/456 dead transitions. [2024-06-28 02:09:50,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 456 transitions, 7756 flow [2024-06-28 02:09:50,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:09:50,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:09:50,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 02:09:50,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186170212765957 [2024-06-28 02:09:50,737 INFO L175 Difference]: Start difference. First operand has 250 places, 401 transitions, 6668 flow. Second operand 8 states and 195 transitions. [2024-06-28 02:09:50,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 456 transitions, 7756 flow [2024-06-28 02:09:51,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 456 transitions, 7687 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-06-28 02:09:51,383 INFO L231 Difference]: Finished difference. Result has 256 places, 404 transitions, 6924 flow [2024-06-28 02:09:51,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6599, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6924, PETRI_PLACES=256, PETRI_TRANSITIONS=404} [2024-06-28 02:09:51,384 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 203 predicate places. [2024-06-28 02:09:51,384 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 404 transitions, 6924 flow [2024-06-28 02:09:51,384 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 02:09:51,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:51,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:09:51,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 02:09:51,385 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:09:51,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:51,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1307311374, now seen corresponding path program 5 times [2024-06-28 02:09:51,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:51,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479409020] [2024-06-28 02:09:51,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:51,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:52,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:52,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:52,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479409020] [2024-06-28 02:09:52,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479409020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:52,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:52,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:09:52,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246951242] [2024-06-28 02:09:52,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:52,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:09:52,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:52,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:09:52,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:09:52,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:09:52,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 404 transitions, 6924 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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 02:09:52,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:52,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:09:52,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:54,790 INFO L124 PetriNetUnfolderBase]: 7050/10740 cut-off events. [2024-06-28 02:09:54,790 INFO L125 PetriNetUnfolderBase]: For 323935/323947 co-relation queries the response was YES. [2024-06-28 02:09:54,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75981 conditions, 10740 events. 7050/10740 cut-off events. For 323935/323947 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 64523 event pairs, 1527 based on Foata normal form. 8/10502 useless extension candidates. Maximal degree in co-relation 75853. Up to 8562 conditions per place. [2024-06-28 02:09:54,934 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 300 selfloop transitions, 165 changer transitions 0/472 dead transitions. [2024-06-28 02:09:54,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 472 transitions, 8536 flow [2024-06-28 02:09:54,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:09:54,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:09:54,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 02:09:54,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-28 02:09:54,935 INFO L175 Difference]: Start difference. First operand has 256 places, 404 transitions, 6924 flow. Second operand 8 states and 197 transitions. [2024-06-28 02:09:54,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 472 transitions, 8536 flow [2024-06-28 02:09:55,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 472 transitions, 8251 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 02:09:55,695 INFO L231 Difference]: Finished difference. Result has 260 places, 413 transitions, 7308 flow [2024-06-28 02:09:55,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6639, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7308, PETRI_PLACES=260, PETRI_TRANSITIONS=413} [2024-06-28 02:09:55,697 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 207 predicate places. [2024-06-28 02:09:55,697 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 413 transitions, 7308 flow [2024-06-28 02:09:55,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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 02:09:55,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:55,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:09:55,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 02:09:55,698 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:09:55,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:55,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1563819324, now seen corresponding path program 6 times [2024-06-28 02:09:55,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:55,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43671114] [2024-06-28 02:09:55,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:55,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:57,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:57,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:57,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43671114] [2024-06-28 02:09:57,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43671114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:57,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:57,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:09:57,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70376897] [2024-06-28 02:09:57,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:57,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:09:57,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:57,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:09:57,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:09:57,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:09:57,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 413 transitions, 7308 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:09:57,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:57,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:09:57,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:59,556 INFO L124 PetriNetUnfolderBase]: 7102/10842 cut-off events. [2024-06-28 02:09:59,556 INFO L125 PetriNetUnfolderBase]: For 340435/340447 co-relation queries the response was YES. [2024-06-28 02:09:59,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78231 conditions, 10842 events. 7102/10842 cut-off events. For 340435/340447 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 65401 event pairs, 1565 based on Foata normal form. 8/10594 useless extension candidates. Maximal degree in co-relation 78100. Up to 9100 conditions per place. [2024-06-28 02:09:59,716 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 351 selfloop transitions, 125 changer transitions 0/483 dead transitions. [2024-06-28 02:09:59,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 483 transitions, 8745 flow [2024-06-28 02:09:59,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:09:59,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:09:59,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-28 02:09:59,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153664302600472 [2024-06-28 02:09:59,717 INFO L175 Difference]: Start difference. First operand has 260 places, 413 transitions, 7308 flow. Second operand 9 states and 218 transitions. [2024-06-28 02:09:59,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 483 transitions, 8745 flow [2024-06-28 02:10:00,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 483 transitions, 8501 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 02:10:00,777 INFO L231 Difference]: Finished difference. Result has 264 places, 417 transitions, 7442 flow [2024-06-28 02:10:00,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7073, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7442, PETRI_PLACES=264, PETRI_TRANSITIONS=417} [2024-06-28 02:10:00,801 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 211 predicate places. [2024-06-28 02:10:00,801 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 417 transitions, 7442 flow [2024-06-28 02:10:00,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:10:00,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:00,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:10:00,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 02:10:00,802 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:10:00,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:00,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1423932638, now seen corresponding path program 7 times [2024-06-28 02:10:00,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:00,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996602443] [2024-06-28 02:10:00,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:00,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:00,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:02,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:02,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:02,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996602443] [2024-06-28 02:10:02,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996602443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:02,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:02,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:10:02,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731693176] [2024-06-28 02:10:02,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:02,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:10:02,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:02,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:10:02,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:10:02,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:10:02,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 417 transitions, 7442 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:10:02,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:02,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:10:02,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:04,545 INFO L124 PetriNetUnfolderBase]: 7154/10920 cut-off events. [2024-06-28 02:10:04,545 INFO L125 PetriNetUnfolderBase]: For 344901/344913 co-relation queries the response was YES. [2024-06-28 02:10:04,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78775 conditions, 10920 events. 7154/10920 cut-off events. For 344901/344913 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 65942 event pairs, 1575 based on Foata normal form. 8/10670 useless extension candidates. Maximal degree in co-relation 78644. Up to 9172 conditions per place. [2024-06-28 02:10:04,691 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 350 selfloop transitions, 127 changer transitions 0/484 dead transitions. [2024-06-28 02:10:04,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 484 transitions, 8848 flow [2024-06-28 02:10:04,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:10:04,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:10:04,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-28 02:10:04,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508274231678487 [2024-06-28 02:10:04,693 INFO L175 Difference]: Start difference. First operand has 264 places, 417 transitions, 7442 flow. Second operand 9 states and 215 transitions. [2024-06-28 02:10:04,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 484 transitions, 8848 flow [2024-06-28 02:10:05,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 484 transitions, 8470 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-28 02:10:05,610 INFO L231 Difference]: Finished difference. Result has 267 places, 422 transitions, 7481 flow [2024-06-28 02:10:05,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7067, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7481, PETRI_PLACES=267, PETRI_TRANSITIONS=422} [2024-06-28 02:10:05,611 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 214 predicate places. [2024-06-28 02:10:05,611 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 422 transitions, 7481 flow [2024-06-28 02:10:05,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:10:05,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:05,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:10:05,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 02:10:05,611 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:10:05,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:05,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1168419610, now seen corresponding path program 8 times [2024-06-28 02:10:05,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:05,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812797965] [2024-06-28 02:10:05,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:05,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:06,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:06,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:06,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812797965] [2024-06-28 02:10:06,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812797965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:06,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:06,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:10:06,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041980772] [2024-06-28 02:10:06,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:06,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:10:06,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:06,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:10:06,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:10:07,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:10:07,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 422 transitions, 7481 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:10:07,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:07,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:10:07,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:09,346 INFO L124 PetriNetUnfolderBase]: 7154/10896 cut-off events. [2024-06-28 02:10:09,346 INFO L125 PetriNetUnfolderBase]: For 349957/349969 co-relation queries the response was YES. [2024-06-28 02:10:09,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78903 conditions, 10896 events. 7154/10896 cut-off events. For 349957/349969 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 65532 event pairs, 1528 based on Foata normal form. 8/10654 useless extension candidates. Maximal degree in co-relation 78770. Up to 9172 conditions per place. [2024-06-28 02:10:09,498 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 347 selfloop transitions, 135 changer transitions 0/489 dead transitions. [2024-06-28 02:10:09,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 489 transitions, 8904 flow [2024-06-28 02:10:09,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:10:09,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:10:09,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-28 02:10:09,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508274231678487 [2024-06-28 02:10:09,500 INFO L175 Difference]: Start difference. First operand has 267 places, 422 transitions, 7481 flow. Second operand 9 states and 215 transitions. [2024-06-28 02:10:09,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 489 transitions, 8904 flow [2024-06-28 02:10:10,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 489 transitions, 8532 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-28 02:10:10,459 INFO L231 Difference]: Finished difference. Result has 269 places, 426 transitions, 7511 flow [2024-06-28 02:10:10,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7117, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7511, PETRI_PLACES=269, PETRI_TRANSITIONS=426} [2024-06-28 02:10:10,460 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 216 predicate places. [2024-06-28 02:10:10,460 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 426 transitions, 7511 flow [2024-06-28 02:10:10,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:10:10,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:10,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:10:10,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 02:10:10,461 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:10:10,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:10,461 INFO L85 PathProgramCache]: Analyzing trace with hash 130833624, now seen corresponding path program 2 times [2024-06-28 02:10:10,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:10,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368945729] [2024-06-28 02:10:10,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:10,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:11,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:11,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:11,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368945729] [2024-06-28 02:10:11,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368945729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:11,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:11,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:10:11,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326303827] [2024-06-28 02:10:11,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:11,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:10:11,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:11,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:10:11,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:10:11,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:10:11,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 426 transitions, 7511 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 02:10:11,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:11,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:10:11,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:13,400 INFO L124 PetriNetUnfolderBase]: 7234/11239 cut-off events. [2024-06-28 02:10:13,401 INFO L125 PetriNetUnfolderBase]: For 366653/366653 co-relation queries the response was YES. [2024-06-28 02:10:13,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79996 conditions, 11239 events. 7234/11239 cut-off events. For 366653/366653 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 69812 event pairs, 2257 based on Foata normal form. 4/10917 useless extension candidates. Maximal degree in co-relation 79862. Up to 9850 conditions per place. [2024-06-28 02:10:13,574 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 390 selfloop transitions, 66 changer transitions 0/463 dead transitions. [2024-06-28 02:10:13,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 463 transitions, 8771 flow [2024-06-28 02:10:13,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:10:13,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:10:13,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-28 02:10:13,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070921985815603 [2024-06-28 02:10:13,576 INFO L175 Difference]: Start difference. First operand has 269 places, 426 transitions, 7511 flow. Second operand 6 states and 143 transitions. [2024-06-28 02:10:13,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 463 transitions, 8771 flow [2024-06-28 02:10:14,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 463 transitions, 8339 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-28 02:10:14,656 INFO L231 Difference]: Finished difference. Result has 269 places, 429 transitions, 7271 flow [2024-06-28 02:10:14,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7079, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7271, PETRI_PLACES=269, PETRI_TRANSITIONS=429} [2024-06-28 02:10:14,656 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 216 predicate places. [2024-06-28 02:10:14,656 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 429 transitions, 7271 flow [2024-06-28 02:10:14,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 02:10:14,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:14,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:10:14,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 02:10:14,657 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:10:14,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:14,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1487894946, now seen corresponding path program 3 times [2024-06-28 02:10:14,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:14,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904688164] [2024-06-28 02:10:14,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:14,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:15,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:15,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:15,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904688164] [2024-06-28 02:10:15,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904688164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:15,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:15,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:10:15,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925517740] [2024-06-28 02:10:15,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:15,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:10:15,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:15,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:10:15,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:10:15,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:10:15,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 429 transitions, 7271 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 02:10:15,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:15,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:10:15,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:17,747 INFO L124 PetriNetUnfolderBase]: 7262/11303 cut-off events. [2024-06-28 02:10:17,747 INFO L125 PetriNetUnfolderBase]: For 365598/365598 co-relation queries the response was YES. [2024-06-28 02:10:17,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79382 conditions, 11303 events. 7262/11303 cut-off events. For 365598/365598 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 70538 event pairs, 2288 based on Foata normal form. 4/10973 useless extension candidates. Maximal degree in co-relation 79247. Up to 10082 conditions per place. [2024-06-28 02:10:17,881 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 399 selfloop transitions, 58 changer transitions 0/464 dead transitions. [2024-06-28 02:10:17,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 464 transitions, 8522 flow [2024-06-28 02:10:17,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:10:17,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:10:17,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-28 02:10:17,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148936170212766 [2024-06-28 02:10:17,882 INFO L175 Difference]: Start difference. First operand has 269 places, 429 transitions, 7271 flow. Second operand 5 states and 121 transitions. [2024-06-28 02:10:17,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 464 transitions, 8522 flow [2024-06-28 02:10:18,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 464 transitions, 8389 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-28 02:10:18,682 INFO L231 Difference]: Finished difference. Result has 270 places, 440 transitions, 7547 flow [2024-06-28 02:10:18,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7155, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7547, PETRI_PLACES=270, PETRI_TRANSITIONS=440} [2024-06-28 02:10:18,682 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 217 predicate places. [2024-06-28 02:10:18,683 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 440 transitions, 7547 flow [2024-06-28 02:10:18,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 02:10:18,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:18,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:10:18,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 02:10:18,683 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:10:18,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:18,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1258663245, now seen corresponding path program 1 times [2024-06-28 02:10:18,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:18,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308015043] [2024-06-28 02:10:18,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:18,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:19,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:19,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:19,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308015043] [2024-06-28 02:10:19,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308015043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:19,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:19,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:10:19,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861643987] [2024-06-28 02:10:19,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:19,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:10:19,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:19,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:10:19,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:10:19,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:10:19,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 440 transitions, 7547 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:19,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:19,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:10:19,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:21,925 INFO L124 PetriNetUnfolderBase]: 7376/11487 cut-off events. [2024-06-28 02:10:21,925 INFO L125 PetriNetUnfolderBase]: For 372276/372276 co-relation queries the response was YES. [2024-06-28 02:10:22,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80816 conditions, 11487 events. 7376/11487 cut-off events. For 372276/372276 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 71964 event pairs, 2282 based on Foata normal form. 3/11146 useless extension candidates. Maximal degree in co-relation 80681. Up to 10266 conditions per place. [2024-06-28 02:10:22,085 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 449 selfloop transitions, 33 changer transitions 0/489 dead transitions. [2024-06-28 02:10:22,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 489 transitions, 9038 flow [2024-06-28 02:10:22,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:10:22,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:10:22,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 02:10:22,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48632218844984804 [2024-06-28 02:10:22,087 INFO L175 Difference]: Start difference. First operand has 270 places, 440 transitions, 7547 flow. Second operand 7 states and 160 transitions. [2024-06-28 02:10:22,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 489 transitions, 9038 flow [2024-06-28 02:10:22,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 489 transitions, 8936 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 02:10:23,005 INFO L231 Difference]: Finished difference. Result has 274 places, 446 transitions, 7612 flow [2024-06-28 02:10:23,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7445, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7612, PETRI_PLACES=274, PETRI_TRANSITIONS=446} [2024-06-28 02:10:23,005 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 221 predicate places. [2024-06-28 02:10:23,005 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 446 transitions, 7612 flow [2024-06-28 02:10:23,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:23,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:23,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:10:23,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 02:10:23,006 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:10:23,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:23,007 INFO L85 PathProgramCache]: Analyzing trace with hash 2097302993, now seen corresponding path program 2 times [2024-06-28 02:10:23,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:23,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129922198] [2024-06-28 02:10:23,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:23,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:23,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:23,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:23,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129922198] [2024-06-28 02:10:23,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129922198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:23,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:23,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:10:23,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018256465] [2024-06-28 02:10:23,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:23,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:10:23,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:23,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:10:23,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:10:23,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:10:23,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 446 transitions, 7612 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:23,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:23,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:10:23,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:26,374 INFO L124 PetriNetUnfolderBase]: 7496/11664 cut-off events. [2024-06-28 02:10:26,375 INFO L125 PetriNetUnfolderBase]: For 387498/387498 co-relation queries the response was YES. [2024-06-28 02:10:26,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82991 conditions, 11664 events. 7496/11664 cut-off events. For 387498/387498 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 73114 event pairs, 2290 based on Foata normal form. 3/11318 useless extension candidates. Maximal degree in co-relation 82855. Up to 10459 conditions per place. [2024-06-28 02:10:26,520 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 456 selfloop transitions, 33 changer transitions 0/496 dead transitions. [2024-06-28 02:10:26,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 496 transitions, 9062 flow [2024-06-28 02:10:26,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:10:26,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:10:26,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-28 02:10:26,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47112462006079026 [2024-06-28 02:10:26,523 INFO L175 Difference]: Start difference. First operand has 274 places, 446 transitions, 7612 flow. Second operand 7 states and 155 transitions. [2024-06-28 02:10:26,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 496 transitions, 9062 flow [2024-06-28 02:10:27,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 496 transitions, 8985 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-28 02:10:27,441 INFO L231 Difference]: Finished difference. Result has 278 places, 456 transitions, 7744 flow [2024-06-28 02:10:27,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7546, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7744, PETRI_PLACES=278, PETRI_TRANSITIONS=456} [2024-06-28 02:10:27,442 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 225 predicate places. [2024-06-28 02:10:27,442 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 456 transitions, 7744 flow [2024-06-28 02:10:27,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:27,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:27,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:10:27,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 02:10:27,443 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:10:27,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:27,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1512660195, now seen corresponding path program 3 times [2024-06-28 02:10:27,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:27,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572378430] [2024-06-28 02:10:27,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:27,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:27,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:28,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:28,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:28,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572378430] [2024-06-28 02:10:28,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572378430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:28,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:28,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:10:28,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929622648] [2024-06-28 02:10:28,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:28,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:10:28,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:28,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:10:28,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:10:28,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:10:28,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 456 transitions, 7744 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:28,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:28,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:10:28,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:30,544 INFO L124 PetriNetUnfolderBase]: 7487/11649 cut-off events. [2024-06-28 02:10:30,544 INFO L125 PetriNetUnfolderBase]: For 391961/391961 co-relation queries the response was YES. [2024-06-28 02:10:30,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82915 conditions, 11649 events. 7487/11649 cut-off events. For 391961/391961 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 73017 event pairs, 2292 based on Foata normal form. 3/11304 useless extension candidates. Maximal degree in co-relation 82777. Up to 10467 conditions per place. [2024-06-28 02:10:30,717 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 451 selfloop transitions, 32 changer transitions 0/490 dead transitions. [2024-06-28 02:10:30,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 490 transitions, 8973 flow [2024-06-28 02:10:30,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:10:30,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:10:30,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-28 02:10:30,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-28 02:10:30,719 INFO L175 Difference]: Start difference. First operand has 278 places, 456 transitions, 7744 flow. Second operand 6 states and 138 transitions. [2024-06-28 02:10:30,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 490 transitions, 8973 flow [2024-06-28 02:10:31,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 490 transitions, 8869 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-28 02:10:31,930 INFO L231 Difference]: Finished difference. Result has 280 places, 456 transitions, 7720 flow [2024-06-28 02:10:31,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7640, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7720, PETRI_PLACES=280, PETRI_TRANSITIONS=456} [2024-06-28 02:10:31,931 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 227 predicate places. [2024-06-28 02:10:31,931 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 456 transitions, 7720 flow [2024-06-28 02:10:31,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:31,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:31,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:10:31,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 02:10:31,932 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:10:31,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:31,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1191144647, now seen corresponding path program 1 times [2024-06-28 02:10:31,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:31,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491334142] [2024-06-28 02:10:31,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:31,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:32,710 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 02:10:32,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:32,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491334142] [2024-06-28 02:10:32,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491334142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:32,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:32,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:10:32,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587817271] [2024-06-28 02:10:32,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:32,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:10:32,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:32,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:10:32,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:10:32,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:10:32,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 456 transitions, 7720 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 02:10:32,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:32,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:10:32,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:35,214 INFO L124 PetriNetUnfolderBase]: 7497/11629 cut-off events. [2024-06-28 02:10:35,215 INFO L125 PetriNetUnfolderBase]: For 399492/399492 co-relation queries the response was YES. [2024-06-28 02:10:35,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82853 conditions, 11629 events. 7497/11629 cut-off events. For 399492/399492 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 72450 event pairs, 2328 based on Foata normal form. 2/11294 useless extension candidates. Maximal degree in co-relation 82714. Up to 10564 conditions per place. [2024-06-28 02:10:35,387 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 459 selfloop transitions, 19 changer transitions 0/485 dead transitions. [2024-06-28 02:10:35,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 485 transitions, 8862 flow [2024-06-28 02:10:35,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:10:35,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:10:35,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 02:10:35,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40691489361702127 [2024-06-28 02:10:35,389 INFO L175 Difference]: Start difference. First operand has 280 places, 456 transitions, 7720 flow. Second operand 8 states and 153 transitions. [2024-06-28 02:10:35,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 485 transitions, 8862 flow [2024-06-28 02:10:36,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 485 transitions, 8786 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 02:10:36,396 INFO L231 Difference]: Finished difference. Result has 284 places, 463 transitions, 7795 flow [2024-06-28 02:10:36,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7644, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7795, PETRI_PLACES=284, PETRI_TRANSITIONS=463} [2024-06-28 02:10:36,397 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 231 predicate places. [2024-06-28 02:10:36,397 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 463 transitions, 7795 flow [2024-06-28 02:10:36,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 02:10:36,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:36,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:10:36,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 02:10:36,397 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:10:36,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:36,398 INFO L85 PathProgramCache]: Analyzing trace with hash 490509130, now seen corresponding path program 1 times [2024-06-28 02:10:36,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:36,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739923803] [2024-06-28 02:10:36,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:36,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:37,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:37,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:37,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739923803] [2024-06-28 02:10:37,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739923803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:37,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:37,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:10:37,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453699420] [2024-06-28 02:10:37,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:37,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:10:37,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:37,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:10:37,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:10:37,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:10:37,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 463 transitions, 7795 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:37,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:37,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:10:37,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:40,006 INFO L124 PetriNetUnfolderBase]: 7492/11647 cut-off events. [2024-06-28 02:10:40,007 INFO L125 PetriNetUnfolderBase]: For 410795/410795 co-relation queries the response was YES. [2024-06-28 02:10:40,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83914 conditions, 11647 events. 7492/11647 cut-off events. For 410795/410795 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 72609 event pairs, 2327 based on Foata normal form. 2/11304 useless extension candidates. Maximal degree in co-relation 83773. Up to 10537 conditions per place. [2024-06-28 02:10:40,176 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 453 selfloop transitions, 23 changer transitions 0/483 dead transitions. [2024-06-28 02:10:40,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 483 transitions, 8915 flow [2024-06-28 02:10:40,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:10:40,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:10:40,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-06-28 02:10:40,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4723404255319149 [2024-06-28 02:10:40,178 INFO L175 Difference]: Start difference. First operand has 284 places, 463 transitions, 7795 flow. Second operand 5 states and 111 transitions. [2024-06-28 02:10:40,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 483 transitions, 8915 flow [2024-06-28 02:10:41,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 483 transitions, 8826 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-28 02:10:41,146 INFO L231 Difference]: Finished difference. Result has 284 places, 465 transitions, 7798 flow [2024-06-28 02:10:41,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7706, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7798, PETRI_PLACES=284, PETRI_TRANSITIONS=465} [2024-06-28 02:10:41,162 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 231 predicate places. [2024-06-28 02:10:41,162 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 465 transitions, 7798 flow [2024-06-28 02:10:41,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:41,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:41,168 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 02:10:41,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 02:10:41,168 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:10:41,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:41,168 INFO L85 PathProgramCache]: Analyzing trace with hash -760937624, now seen corresponding path program 1 times [2024-06-28 02:10:41,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:41,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134864083] [2024-06-28 02:10:41,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:41,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:42,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:42,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:42,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134864083] [2024-06-28 02:10:42,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134864083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:42,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:42,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:10:42,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981335377] [2024-06-28 02:10:42,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:42,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:10:42,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:42,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:10:42,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:10:42,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:10:42,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 465 transitions, 7798 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:42,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:42,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:10:42,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:45,195 INFO L124 PetriNetUnfolderBase]: 7560/11737 cut-off events. [2024-06-28 02:10:45,195 INFO L125 PetriNetUnfolderBase]: For 423261/423261 co-relation queries the response was YES. [2024-06-28 02:10:45,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84928 conditions, 11737 events. 7560/11737 cut-off events. For 423261/423261 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 73315 event pairs, 1602 based on Foata normal form. 4/11399 useless extension candidates. Maximal degree in co-relation 84788. Up to 10431 conditions per place. [2024-06-28 02:10:45,357 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 479 selfloop transitions, 48 changer transitions 0/534 dead transitions. [2024-06-28 02:10:45,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 534 transitions, 9250 flow [2024-06-28 02:10:45,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:10:45,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:10:45,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-28 02:10:45,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011820330969267 [2024-06-28 02:10:45,358 INFO L175 Difference]: Start difference. First operand has 284 places, 465 transitions, 7798 flow. Second operand 9 states and 212 transitions. [2024-06-28 02:10:45,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 534 transitions, 9250 flow [2024-06-28 02:10:46,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 534 transitions, 9174 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 02:10:46,470 INFO L231 Difference]: Finished difference. Result has 292 places, 473 transitions, 7954 flow [2024-06-28 02:10:46,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7728, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7954, PETRI_PLACES=292, PETRI_TRANSITIONS=473} [2024-06-28 02:10:46,471 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 239 predicate places. [2024-06-28 02:10:46,471 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 473 transitions, 7954 flow [2024-06-28 02:10:46,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:46,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:46,471 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 02:10:46,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 02:10:46,471 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:10:46,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:46,472 INFO L85 PathProgramCache]: Analyzing trace with hash -759030194, now seen corresponding path program 2 times [2024-06-28 02:10:46,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:46,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528862645] [2024-06-28 02:10:46,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:46,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:47,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:47,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:47,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528862645] [2024-06-28 02:10:47,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528862645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:47,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:47,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:10:47,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794411811] [2024-06-28 02:10:47,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:47,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:10:47,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:47,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:10:47,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:10:47,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:10:47,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 473 transitions, 7954 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:47,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:47,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:10:47,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:50,639 INFO L124 PetriNetUnfolderBase]: 7602/11790 cut-off events. [2024-06-28 02:10:50,639 INFO L125 PetriNetUnfolderBase]: For 435418/435418 co-relation queries the response was YES. [2024-06-28 02:10:50,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86018 conditions, 11790 events. 7602/11790 cut-off events. For 435418/435418 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 73672 event pairs, 1908 based on Foata normal form. 4/11455 useless extension candidates. Maximal degree in co-relation 85875. Up to 10456 conditions per place. [2024-06-28 02:10:50,821 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 470 selfloop transitions, 59 changer transitions 0/536 dead transitions. [2024-06-28 02:10:50,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 536 transitions, 9390 flow [2024-06-28 02:10:50,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:10:50,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:10:50,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-06-28 02:10:50,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2024-06-28 02:10:50,823 INFO L175 Difference]: Start difference. First operand has 292 places, 473 transitions, 7954 flow. Second operand 9 states and 210 transitions. [2024-06-28 02:10:50,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 536 transitions, 9390 flow [2024-06-28 02:10:51,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 536 transitions, 9305 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-28 02:10:51,989 INFO L231 Difference]: Finished difference. Result has 298 places, 475 transitions, 8038 flow [2024-06-28 02:10:51,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7869, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8038, PETRI_PLACES=298, PETRI_TRANSITIONS=475} [2024-06-28 02:10:51,990 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 245 predicate places. [2024-06-28 02:10:51,990 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 475 transitions, 8038 flow [2024-06-28 02:10:51,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:51,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:51,991 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 02:10:51,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 02:10:51,991 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:10:51,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:51,991 INFO L85 PathProgramCache]: Analyzing trace with hash -759034844, now seen corresponding path program 3 times [2024-06-28 02:10:51,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:51,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589003983] [2024-06-28 02:10:51,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:51,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:53,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:53,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:53,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589003983] [2024-06-28 02:10:53,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589003983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:53,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:53,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:10:53,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670339864] [2024-06-28 02:10:53,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:53,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:10:53,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:53,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:10:53,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:10:53,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:10:53,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 475 transitions, 8038 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:53,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:53,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:10:53,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:56,096 INFO L124 PetriNetUnfolderBase]: 7644/11873 cut-off events. [2024-06-28 02:10:56,096 INFO L125 PetriNetUnfolderBase]: For 452730/452730 co-relation queries the response was YES. [2024-06-28 02:10:56,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87314 conditions, 11873 events. 7644/11873 cut-off events. For 452730/452730 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 74421 event pairs, 1901 based on Foata normal form. 4/11531 useless extension candidates. Maximal degree in co-relation 87169. Up to 10427 conditions per place. [2024-06-28 02:10:56,274 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 473 selfloop transitions, 60 changer transitions 0/540 dead transitions. [2024-06-28 02:10:56,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 540 transitions, 9514 flow [2024-06-28 02:10:56,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:10:56,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:10:56,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-28 02:10:56,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4988179669030733 [2024-06-28 02:10:56,276 INFO L175 Difference]: Start difference. First operand has 298 places, 475 transitions, 8038 flow. Second operand 9 states and 211 transitions. [2024-06-28 02:10:56,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 540 transitions, 9514 flow [2024-06-28 02:10:57,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 540 transitions, 9396 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 02:10:57,667 INFO L231 Difference]: Finished difference. Result has 302 places, 479 transitions, 8133 flow [2024-06-28 02:10:57,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7920, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8133, PETRI_PLACES=302, PETRI_TRANSITIONS=479} [2024-06-28 02:10:57,668 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 249 predicate places. [2024-06-28 02:10:57,668 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 479 transitions, 8133 flow [2024-06-28 02:10:57,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:57,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:57,668 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 02:10:57,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 02:10:57,668 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:10:57,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:57,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1422528654, now seen corresponding path program 1 times [2024-06-28 02:10:57,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:57,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272947613] [2024-06-28 02:10:57,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:57,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:59,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:59,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:59,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272947613] [2024-06-28 02:10:59,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272947613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:59,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:59,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:10:59,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979402217] [2024-06-28 02:10:59,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:59,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:10:59,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:59,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:10:59,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:10:59,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:10:59,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 479 transitions, 8133 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:59,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:59,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:10:59,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:01,982 INFO L124 PetriNetUnfolderBase]: 7842/12160 cut-off events. [2024-06-28 02:11:01,983 INFO L125 PetriNetUnfolderBase]: For 490352/490352 co-relation queries the response was YES. [2024-06-28 02:11:02,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89784 conditions, 12160 events. 7842/12160 cut-off events. For 490352/490352 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 76381 event pairs, 1930 based on Foata normal form. 20/11839 useless extension candidates. Maximal degree in co-relation 89637. Up to 10526 conditions per place. [2024-06-28 02:11:02,177 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 484 selfloop transitions, 65 changer transitions 0/556 dead transitions. [2024-06-28 02:11:02,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 556 transitions, 9679 flow [2024-06-28 02:11:02,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:11:02,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:11:02,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 237 transitions. [2024-06-28 02:11:02,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5042553191489362 [2024-06-28 02:11:02,179 INFO L175 Difference]: Start difference. First operand has 302 places, 479 transitions, 8133 flow. Second operand 10 states and 237 transitions. [2024-06-28 02:11:02,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 556 transitions, 9679 flow [2024-06-28 02:11:03,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 556 transitions, 9568 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 02:11:03,597 INFO L231 Difference]: Finished difference. Result has 306 places, 483 transitions, 8265 flow [2024-06-28 02:11:03,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8022, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8265, PETRI_PLACES=306, PETRI_TRANSITIONS=483} [2024-06-28 02:11:03,597 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 253 predicate places. [2024-06-28 02:11:03,597 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 483 transitions, 8265 flow [2024-06-28 02:11:03,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:03,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:03,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:03,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 02:11:03,598 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:11:03,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:03,598 INFO L85 PathProgramCache]: Analyzing trace with hash 731950896, now seen corresponding path program 4 times [2024-06-28 02:11:03,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:03,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794552486] [2024-06-28 02:11:03,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:03,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:04,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:04,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:04,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794552486] [2024-06-28 02:11:04,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794552486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:04,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:04,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:11:04,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406367815] [2024-06-28 02:11:04,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:04,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:11:04,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:04,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:11:04,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:11:04,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:11:04,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 483 transitions, 8265 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:04,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:04,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:11:04,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:07,748 INFO L124 PetriNetUnfolderBase]: 7884/12237 cut-off events. [2024-06-28 02:11:07,748 INFO L125 PetriNetUnfolderBase]: For 489210/489210 co-relation queries the response was YES. [2024-06-28 02:11:07,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91296 conditions, 12237 events. 7884/12237 cut-off events. For 489210/489210 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 77052 event pairs, 1843 based on Foata normal form. 4/11895 useless extension candidates. Maximal degree in co-relation 91147. Up to 10561 conditions per place. [2024-06-28 02:11:07,950 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 446 selfloop transitions, 96 changer transitions 0/549 dead transitions. [2024-06-28 02:11:07,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 549 transitions, 9807 flow [2024-06-28 02:11:07,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:11:07,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:11:07,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-28 02:11:07,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-06-28 02:11:07,952 INFO L175 Difference]: Start difference. First operand has 306 places, 483 transitions, 8265 flow. Second operand 9 states and 213 transitions. [2024-06-28 02:11:07,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 549 transitions, 9807 flow [2024-06-28 02:11:09,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 549 transitions, 9654 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 02:11:09,303 INFO L231 Difference]: Finished difference. Result has 308 places, 485 transitions, 8364 flow [2024-06-28 02:11:09,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8112, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8364, PETRI_PLACES=308, PETRI_TRANSITIONS=485} [2024-06-28 02:11:09,303 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 255 predicate places. [2024-06-28 02:11:09,304 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 485 transitions, 8364 flow [2024-06-28 02:11:09,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:09,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:09,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:09,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 02:11:09,304 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:11:09,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:09,309 INFO L85 PathProgramCache]: Analyzing trace with hash -2109507940, now seen corresponding path program 2 times [2024-06-28 02:11:09,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:09,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136576745] [2024-06-28 02:11:09,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:09,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:10,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:10,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:10,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136576745] [2024-06-28 02:11:10,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136576745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:10,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:10,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:11:10,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475808482] [2024-06-28 02:11:10,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:10,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:11:10,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:10,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:11:10,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:11:10,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:11:10,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 485 transitions, 8364 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:10,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:10,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:11:10,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:13,844 INFO L124 PetriNetUnfolderBase]: 8082/12542 cut-off events. [2024-06-28 02:11:13,845 INFO L125 PetriNetUnfolderBase]: For 527496/527496 co-relation queries the response was YES. [2024-06-28 02:11:13,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93618 conditions, 12542 events. 8082/12542 cut-off events. For 527496/527496 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 79281 event pairs, 1863 based on Foata normal form. 20/12215 useless extension candidates. Maximal degree in co-relation 93468. Up to 10573 conditions per place. [2024-06-28 02:11:14,048 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 456 selfloop transitions, 102 changer transitions 0/565 dead transitions. [2024-06-28 02:11:14,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 565 transitions, 10028 flow [2024-06-28 02:11:14,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:11:14,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:11:14,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 240 transitions. [2024-06-28 02:11:14,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-28 02:11:14,049 INFO L175 Difference]: Start difference. First operand has 308 places, 485 transitions, 8364 flow. Second operand 10 states and 240 transitions. [2024-06-28 02:11:14,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 565 transitions, 10028 flow [2024-06-28 02:11:15,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 565 transitions, 9772 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 02:11:15,415 INFO L231 Difference]: Finished difference. Result has 311 places, 489 transitions, 8456 flow [2024-06-28 02:11:15,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8138, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8456, PETRI_PLACES=311, PETRI_TRANSITIONS=489} [2024-06-28 02:11:15,415 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 258 predicate places. [2024-06-28 02:11:15,416 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 489 transitions, 8456 flow [2024-06-28 02:11:15,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:15,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:15,416 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 02:11:15,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 02:11:15,416 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:11:15,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:15,417 INFO L85 PathProgramCache]: Analyzing trace with hash -461254094, now seen corresponding path program 3 times [2024-06-28 02:11:15,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:15,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426790022] [2024-06-28 02:11:15,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:15,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:15,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:16,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:16,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:16,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426790022] [2024-06-28 02:11:16,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426790022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:16,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:16,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:11:16,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583224473] [2024-06-28 02:11:16,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:16,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:11:16,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:16,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:11:16,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:11:16,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:11:16,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 489 transitions, 8456 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:16,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:16,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:11:16,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:19,433 INFO L124 PetriNetUnfolderBase]: 8272/12684 cut-off events. [2024-06-28 02:11:19,434 INFO L125 PetriNetUnfolderBase]: For 554355/554358 co-relation queries the response was YES. [2024-06-28 02:11:19,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96036 conditions, 12684 events. 8272/12684 cut-off events. For 554355/554358 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 78971 event pairs, 1593 based on Foata normal form. 22/12407 useless extension candidates. Maximal degree in co-relation 95885. Up to 10011 conditions per place. [2024-06-28 02:11:19,641 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 377 selfloop transitions, 175 changer transitions 0/559 dead transitions. [2024-06-28 02:11:19,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 559 transitions, 10048 flow [2024-06-28 02:11:19,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:11:19,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:11:19,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-28 02:11:19,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5200945626477541 [2024-06-28 02:11:19,642 INFO L175 Difference]: Start difference. First operand has 311 places, 489 transitions, 8456 flow. Second operand 9 states and 220 transitions. [2024-06-28 02:11:19,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 559 transitions, 10048 flow [2024-06-28 02:11:21,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 559 transitions, 9788 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-28 02:11:21,215 INFO L231 Difference]: Finished difference. Result has 312 places, 490 transitions, 8585 flow [2024-06-28 02:11:21,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8196, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8585, PETRI_PLACES=312, PETRI_TRANSITIONS=490} [2024-06-28 02:11:21,216 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 259 predicate places. [2024-06-28 02:11:21,216 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 490 transitions, 8585 flow [2024-06-28 02:11:21,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:21,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:21,217 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 02:11:21,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 02:11:21,217 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:11:21,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:21,217 INFO L85 PathProgramCache]: Analyzing trace with hash -502775874, now seen corresponding path program 4 times [2024-06-28 02:11:21,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:21,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208691172] [2024-06-28 02:11:21,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:21,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:22,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:22,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:22,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208691172] [2024-06-28 02:11:22,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208691172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:22,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:22,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:11:22,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323119202] [2024-06-28 02:11:22,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:22,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:11:22,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:22,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:11:22,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:11:22,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:11:22,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 490 transitions, 8585 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:22,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:22,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:11:22,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:25,649 INFO L124 PetriNetUnfolderBase]: 8662/13250 cut-off events. [2024-06-28 02:11:25,650 INFO L125 PetriNetUnfolderBase]: For 602474/602486 co-relation queries the response was YES. [2024-06-28 02:11:25,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101504 conditions, 13250 events. 8662/13250 cut-off events. For 602474/602486 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 82833 event pairs, 1413 based on Foata normal form. 20/12981 useless extension candidates. Maximal degree in co-relation 101352. Up to 9266 conditions per place. [2024-06-28 02:11:25,864 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 380 selfloop transitions, 185 changer transitions 0/572 dead transitions. [2024-06-28 02:11:25,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 572 transitions, 10589 flow [2024-06-28 02:11:25,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:11:25,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:11:25,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-28 02:11:25,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342789598108747 [2024-06-28 02:11:25,865 INFO L175 Difference]: Start difference. First operand has 312 places, 490 transitions, 8585 flow. Second operand 9 states and 226 transitions. [2024-06-28 02:11:25,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 572 transitions, 10589 flow [2024-06-28 02:11:27,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 572 transitions, 10224 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 02:11:27,675 INFO L231 Difference]: Finished difference. Result has 315 places, 494 transitions, 8764 flow [2024-06-28 02:11:27,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8220, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8764, PETRI_PLACES=315, PETRI_TRANSITIONS=494} [2024-06-28 02:11:27,676 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 262 predicate places. [2024-06-28 02:11:27,676 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 494 transitions, 8764 flow [2024-06-28 02:11:27,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:27,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:27,676 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 02:11:27,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 02:11:27,676 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:11:27,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:27,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1043564706, now seen corresponding path program 5 times [2024-06-28 02:11:27,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:27,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140119688] [2024-06-28 02:11:27,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:27,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:29,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:29,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:29,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140119688] [2024-06-28 02:11:29,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140119688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:29,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:29,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:11:29,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929419956] [2024-06-28 02:11:29,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:29,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:11:29,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:29,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:11:29,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:11:29,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:11:29,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 494 transitions, 8764 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:29,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:29,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:11:29,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:33,292 INFO L124 PetriNetUnfolderBase]: 8704/13630 cut-off events. [2024-06-28 02:11:33,293 INFO L125 PetriNetUnfolderBase]: For 612590/612590 co-relation queries the response was YES. [2024-06-28 02:11:33,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103842 conditions, 13630 events. 8704/13630 cut-off events. For 612590/612590 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 88424 event pairs, 2124 based on Foata normal form. 4/13241 useless extension candidates. Maximal degree in co-relation 103688. Up to 11815 conditions per place. [2024-06-28 02:11:33,478 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 459 selfloop transitions, 93 changer transitions 0/559 dead transitions. [2024-06-28 02:11:33,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 559 transitions, 10342 flow [2024-06-28 02:11:33,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:11:33,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:11:33,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-28 02:11:33,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-06-28 02:11:33,480 INFO L175 Difference]: Start difference. First operand has 315 places, 494 transitions, 8764 flow. Second operand 9 states and 213 transitions. [2024-06-28 02:11:33,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 559 transitions, 10342 flow [2024-06-28 02:11:34,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 559 transitions, 10080 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 02:11:34,935 INFO L231 Difference]: Finished difference. Result has 319 places, 497 transitions, 8807 flow [2024-06-28 02:11:34,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8502, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8807, PETRI_PLACES=319, PETRI_TRANSITIONS=497} [2024-06-28 02:11:34,937 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 266 predicate places. [2024-06-28 02:11:34,937 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 497 transitions, 8807 flow [2024-06-28 02:11:34,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:34,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:34,938 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 02:11:34,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 02:11:34,938 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:11:34,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:34,938 INFO L85 PathProgramCache]: Analyzing trace with hash -2115948624, now seen corresponding path program 6 times [2024-06-28 02:11:34,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:34,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159308672] [2024-06-28 02:11:34,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:34,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:36,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:36,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:36,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159308672] [2024-06-28 02:11:36,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159308672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:36,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:36,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:11:36,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257109653] [2024-06-28 02:11:36,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:36,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:11:36,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:36,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:11:36,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:11:36,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:11:36,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 497 transitions, 8807 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:36,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:36,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:11:36,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:39,635 INFO L124 PetriNetUnfolderBase]: 8785/13755 cut-off events. [2024-06-28 02:11:39,636 INFO L125 PetriNetUnfolderBase]: For 635100/635100 co-relation queries the response was YES. [2024-06-28 02:11:40,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105700 conditions, 13755 events. 8785/13755 cut-off events. For 635100/635100 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 89357 event pairs, 2116 based on Foata normal form. 4/13364 useless extension candidates. Maximal degree in co-relation 105544. Up to 11924 conditions per place. [2024-06-28 02:11:40,221 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 488 selfloop transitions, 79 changer transitions 0/574 dead transitions. [2024-06-28 02:11:40,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 574 transitions, 10650 flow [2024-06-28 02:11:40,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:11:40,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:11:40,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-28 02:11:40,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130023640661938 [2024-06-28 02:11:40,223 INFO L175 Difference]: Start difference. First operand has 319 places, 497 transitions, 8807 flow. Second operand 9 states and 217 transitions. [2024-06-28 02:11:40,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 574 transitions, 10650 flow [2024-06-28 02:11:42,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 574 transitions, 10272 flow, removed 96 selfloop flow, removed 7 redundant places. [2024-06-28 02:11:42,010 INFO L231 Difference]: Finished difference. Result has 323 places, 510 transitions, 9014 flow [2024-06-28 02:11:42,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8530, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9014, PETRI_PLACES=323, PETRI_TRANSITIONS=510} [2024-06-28 02:11:42,011 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 270 predicate places. [2024-06-28 02:11:42,012 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 510 transitions, 9014 flow [2024-06-28 02:11:42,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:42,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:42,012 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 02:11:42,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 02:11:42,012 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:11:42,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:42,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1530323120, now seen corresponding path program 5 times [2024-06-28 02:11:42,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:42,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696909683] [2024-06-28 02:11:42,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:42,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:43,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:43,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:43,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696909683] [2024-06-28 02:11:43,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696909683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:43,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:43,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:11:43,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791731919] [2024-06-28 02:11:43,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:43,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:11:43,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:43,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:11:43,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:11:43,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:11:43,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 510 transitions, 9014 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:43,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:43,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:11:43,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:47,805 INFO L124 PetriNetUnfolderBase]: 8991/14070 cut-off events. [2024-06-28 02:11:47,806 INFO L125 PetriNetUnfolderBase]: For 695330/695330 co-relation queries the response was YES. [2024-06-28 02:11:47,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108927 conditions, 14070 events. 8991/14070 cut-off events. For 695330/695330 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 91663 event pairs, 2160 based on Foata normal form. 20/13694 useless extension candidates. Maximal degree in co-relation 108768. Up to 12068 conditions per place. [2024-06-28 02:11:48,103 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 510 selfloop transitions, 77 changer transitions 0/594 dead transitions. [2024-06-28 02:11:48,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 594 transitions, 10785 flow [2024-06-28 02:11:48,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:11:48,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:11:48,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 244 transitions. [2024-06-28 02:11:48,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5191489361702127 [2024-06-28 02:11:48,105 INFO L175 Difference]: Start difference. First operand has 323 places, 510 transitions, 9014 flow. Second operand 10 states and 244 transitions. [2024-06-28 02:11:48,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 594 transitions, 10785 flow [2024-06-28 02:11:50,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 594 transitions, 10584 flow, removed 90 selfloop flow, removed 2 redundant places. [2024-06-28 02:11:50,013 INFO L231 Difference]: Finished difference. Result has 332 places, 516 transitions, 9121 flow [2024-06-28 02:11:50,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8813, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9121, PETRI_PLACES=332, PETRI_TRANSITIONS=516} [2024-06-28 02:11:50,014 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 279 predicate places. [2024-06-28 02:11:50,014 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 516 transitions, 9121 flow [2024-06-28 02:11:50,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:50,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:50,015 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 02:11:50,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 02:11:50,015 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:11:50,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:50,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1966985504, now seen corresponding path program 6 times [2024-06-28 02:11:50,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:50,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647291372] [2024-06-28 02:11:50,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:50,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:51,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:51,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:51,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647291372] [2024-06-28 02:11:51,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647291372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:51,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:51,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:11:51,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331811422] [2024-06-28 02:11:51,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:51,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:11:51,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:51,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:11:51,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:11:51,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:11:51,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 516 transitions, 9121 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:51,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:51,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:11:51,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:55,491 INFO L124 PetriNetUnfolderBase]: 9281/14250 cut-off events. [2024-06-28 02:11:55,491 INFO L125 PetriNetUnfolderBase]: For 747783/747795 co-relation queries the response was YES. [2024-06-28 02:11:55,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113481 conditions, 14250 events. 9281/14250 cut-off events. For 747783/747795 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 90680 event pairs, 1535 based on Foata normal form. 20/13962 useless extension candidates. Maximal degree in co-relation 113318. Up to 9188 conditions per place. [2024-06-28 02:11:55,698 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 406 selfloop transitions, 196 changer transitions 0/609 dead transitions. [2024-06-28 02:11:55,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 609 transitions, 11361 flow [2024-06-28 02:11:55,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:11:55,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:11:55,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 249 transitions. [2024-06-28 02:11:55,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5297872340425532 [2024-06-28 02:11:55,700 INFO L175 Difference]: Start difference. First operand has 332 places, 516 transitions, 9121 flow. Second operand 10 states and 249 transitions. [2024-06-28 02:11:55,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 609 transitions, 11361 flow [2024-06-28 02:11:57,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 609 transitions, 11135 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 02:11:57,975 INFO L231 Difference]: Finished difference. Result has 336 places, 520 transitions, 9450 flow [2024-06-28 02:11:57,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8895, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9450, PETRI_PLACES=336, PETRI_TRANSITIONS=520} [2024-06-28 02:11:57,975 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 283 predicate places. [2024-06-28 02:11:57,976 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 520 transitions, 9450 flow [2024-06-28 02:11:57,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:57,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:57,976 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 02:11:57,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 02:11:57,976 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:11:57,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:57,977 INFO L85 PathProgramCache]: Analyzing trace with hash -718243932, now seen corresponding path program 7 times [2024-06-28 02:11:57,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:57,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015723185] [2024-06-28 02:11:57,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:57,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:59,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:59,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:59,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015723185] [2024-06-28 02:11:59,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015723185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:59,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:59,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:11:59,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522843824] [2024-06-28 02:11:59,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:59,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:11:59,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:59,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:11:59,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:11:59,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:11:59,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 520 transitions, 9450 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:59,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:59,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:11:59,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:03,554 INFO L124 PetriNetUnfolderBase]: 9429/14540 cut-off events. [2024-06-28 02:12:03,554 INFO L125 PetriNetUnfolderBase]: For 775759/775762 co-relation queries the response was YES. [2024-06-28 02:12:03,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116872 conditions, 14540 events. 9429/14540 cut-off events. For 775759/775762 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 93636 event pairs, 1793 based on Foata normal form. 18/14230 useless extension candidates. Maximal degree in co-relation 116708. Up to 11390 conditions per place. [2024-06-28 02:12:03,754 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 418 selfloop transitions, 184 changer transitions 0/609 dead transitions. [2024-06-28 02:12:03,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 609 transitions, 11622 flow [2024-06-28 02:12:03,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:12:03,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:12:03,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 250 transitions. [2024-06-28 02:12:03,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-28 02:12:03,756 INFO L175 Difference]: Start difference. First operand has 336 places, 520 transitions, 9450 flow. Second operand 10 states and 250 transitions. [2024-06-28 02:12:03,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 609 transitions, 11622 flow [2024-06-28 02:12:06,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 609 transitions, 11296 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-28 02:12:06,043 INFO L231 Difference]: Finished difference. Result has 342 places, 522 transitions, 9585 flow [2024-06-28 02:12:06,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9130, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9585, PETRI_PLACES=342, PETRI_TRANSITIONS=522} [2024-06-28 02:12:06,044 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 289 predicate places. [2024-06-28 02:12:06,044 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 522 transitions, 9585 flow [2024-06-28 02:12:06,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:06,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:06,045 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 02:12:06,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 02:12:06,045 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:06,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:06,045 INFO L85 PathProgramCache]: Analyzing trace with hash -718252302, now seen corresponding path program 8 times [2024-06-28 02:12:06,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:06,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081678018] [2024-06-28 02:12:06,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:06,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:06,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:07,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:07,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:07,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081678018] [2024-06-28 02:12:07,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081678018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:07,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:07,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:12:07,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508888401] [2024-06-28 02:12:07,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:07,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:12:07,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:07,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:12:07,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:12:07,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:12:07,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 522 transitions, 9585 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:07,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:07,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:12:07,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:11,868 INFO L124 PetriNetUnfolderBase]: 9393/14484 cut-off events. [2024-06-28 02:12:11,868 INFO L125 PetriNetUnfolderBase]: For 755952/755955 co-relation queries the response was YES. [2024-06-28 02:12:12,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115893 conditions, 14484 events. 9393/14484 cut-off events. For 755952/755955 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 93212 event pairs, 1815 based on Foata normal form. 22/14178 useless extension candidates. Maximal degree in co-relation 115727. Up to 11668 conditions per place. [2024-06-28 02:12:12,165 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 413 selfloop transitions, 182 changer transitions 0/602 dead transitions. [2024-06-28 02:12:12,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 602 transitions, 11398 flow [2024-06-28 02:12:12,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:12:12,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:12:12,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 243 transitions. [2024-06-28 02:12:12,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170212765957447 [2024-06-28 02:12:12,166 INFO L175 Difference]: Start difference. First operand has 342 places, 522 transitions, 9585 flow. Second operand 10 states and 243 transitions. [2024-06-28 02:12:12,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 602 transitions, 11398 flow [2024-06-28 02:12:14,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 602 transitions, 10777 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 02:12:14,462 INFO L231 Difference]: Finished difference. Result has 343 places, 523 transitions, 9372 flow [2024-06-28 02:12:14,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8974, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9372, PETRI_PLACES=343, PETRI_TRANSITIONS=523} [2024-06-28 02:12:14,462 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 290 predicate places. [2024-06-28 02:12:14,463 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 523 transitions, 9372 flow [2024-06-28 02:12:14,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:14,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:14,463 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 02:12:14,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 02:12:14,463 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:14,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:14,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1185988160, now seen corresponding path program 7 times [2024-06-28 02:12:14,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:14,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468242914] [2024-06-28 02:12:14,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:14,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:16,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:16,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:16,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468242914] [2024-06-28 02:12:16,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468242914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:16,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:16,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:12:16,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443009842] [2024-06-28 02:12:16,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:16,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:12:16,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:16,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:12:16,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:12:16,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 02:12:16,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 523 transitions, 9372 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:16,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:16,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 02:12:16,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:20,088 INFO L124 PetriNetUnfolderBase]: 9435/14567 cut-off events. [2024-06-28 02:12:20,088 INFO L125 PetriNetUnfolderBase]: For 739852/739855 co-relation queries the response was YES. [2024-06-28 02:12:20,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114579 conditions, 14567 events. 9435/14567 cut-off events. For 739852/739855 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 94054 event pairs, 1918 based on Foata normal form. 6/14238 useless extension candidates. Maximal degree in co-relation 114413. Up to 11942 conditions per place. [2024-06-28 02:12:20,522 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 423 selfloop transitions, 161 changer transitions 0/591 dead transitions. [2024-06-28 02:12:20,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 591 transitions, 11134 flow [2024-06-28 02:12:20,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:12:20,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:12:20,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-28 02:12:20,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2024-06-28 02:12:20,524 INFO L175 Difference]: Start difference. First operand has 343 places, 523 transitions, 9372 flow. Second operand 9 states and 219 transitions. [2024-06-28 02:12:20,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 591 transitions, 11134 flow [2024-06-28 02:12:22,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 591 transitions, 10721 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 02:12:22,551 INFO L231 Difference]: Finished difference. Result has 342 places, 525 transitions, 9358 flow [2024-06-28 02:12:22,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8959, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9358, PETRI_PLACES=342, PETRI_TRANSITIONS=525} [2024-06-28 02:12:22,556 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 289 predicate places. [2024-06-28 02:12:22,557 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 525 transitions, 9358 flow [2024-06-28 02:12:22,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:22,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:22,557 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 02:12:22,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 02:12:22,557 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:22,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:22,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1185981216, now seen corresponding path program 9 times [2024-06-28 02:12:22,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:22,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428266717] [2024-06-28 02:12:22,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:22,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat