./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe024_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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe024_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/safe024_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe024_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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 04:22:45,893 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 04:22:45,973 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 04:22:45,979 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 04:22:45,979 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 04:22:46,008 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 04:22:46,009 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 04:22:46,009 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 04:22:46,010 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 04:22:46,010 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 04:22:46,010 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 04:22:46,011 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 04:22:46,011 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 04:22:46,012 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 04:22:46,012 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 04:22:46,012 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 04:22:46,013 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 04:22:46,013 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 04:22:46,013 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 04:22:46,013 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 04:22:46,014 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 04:22:46,014 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 04:22:46,014 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 04:22:46,015 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 04:22:46,015 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 04:22:46,015 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 04:22:46,016 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 04:22:46,016 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 04:22:46,016 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 04:22:46,017 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 04:22:46,018 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 04:22:46,018 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 04:22:46,018 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 04:22:46,018 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 04:22:46,019 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 04:22:46,019 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 04:22:46,019 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 04:22:46,019 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 04:22:46,019 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 04:22:46,020 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 04:22:46,020 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 04:22:46,020 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 04:22:46,020 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 04:22:46,021 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 04:22:46,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 04:22:46,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 04:22:46,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 04:22:46,292 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 04:22:46,292 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 04:22:46,293 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe024_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 04:22:47,530 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 04:22:47,828 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 04:22:47,830 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 04:22:47,849 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e63864fd/98a60095540f4a9a9db725e4f997f01d/FLAG5e2578587 [2024-06-28 04:22:47,865 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e63864fd/98a60095540f4a9a9db725e4f997f01d [2024-06-28 04:22:47,869 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 04:22:47,869 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 04:22:47,870 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe024_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-28 04:22:48,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 04:22:48,075 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 04:22:48,076 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 04:22:48,076 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 04:22:48,082 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 04:22:48,082 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 04:22:47" (1/2) ... [2024-06-28 04:22:48,083 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f45f949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:22:48, skipping insertion in model container [2024-06-28 04:22:48,083 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 04:22:47" (1/2) ... [2024-06-28 04:22:48,085 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@36b761ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:22:48, skipping insertion in model container [2024-06-28 04:22:48,085 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:22:48" (2/2) ... [2024-06-28 04:22:48,085 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f45f949 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:22:48, skipping insertion in model container [2024-06-28 04:22:48,085 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:22:48" (2/2) ... [2024-06-28 04:22:48,086 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 04:22:48,163 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 04:22:48,164 INFO L97 edCorrectnessWitness]: Location invariant before [L836-L836] ((((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-28 04:22:48,164 INFO L97 edCorrectnessWitness]: Location invariant before [L838-L838] ((((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-28 04:22:48,164 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] ((((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-28 04:22:48,164 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 04:22:48,164 INFO L106 edCorrectnessWitness]: ghost_update [L834-L834] multithreaded = 1; [2024-06-28 04:22:48,201 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 04:22:48,555 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 04:22:48,567 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 04:22:48,716 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 04:22:48,752 INFO L206 MainTranslator]: Completed translation [2024-06-28 04:22:48,752 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:22:48 WrapperNode [2024-06-28 04:22:48,753 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 04:22:48,754 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 04:22:48,754 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 04:22:48,754 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 04:22:48,760 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 04:22:48" (1/1) ... [2024-06-28 04:22:48,780 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 04:22:48" (1/1) ... [2024-06-28 04:22:48,815 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 126 [2024-06-28 04:22:48,816 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 04:22:48,817 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 04:22:48,817 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 04:22:48,817 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 04:22:48,828 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 04:22:48" (1/1) ... [2024-06-28 04:22:48,828 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 04:22:48" (1/1) ... [2024-06-28 04:22:48,831 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 04:22:48" (1/1) ... [2024-06-28 04:22:48,853 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 04:22:48,854 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 04:22:48" (1/1) ... [2024-06-28 04:22:48,854 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 04:22:48" (1/1) ... [2024-06-28 04:22:48,868 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 04:22:48" (1/1) ... [2024-06-28 04:22:48,885 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 04:22:48" (1/1) ... [2024-06-28 04:22:48,888 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 04:22:48" (1/1) ... [2024-06-28 04:22:48,889 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 04:22:48" (1/1) ... [2024-06-28 04:22:48,893 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 04:22:48,902 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 04:22:48,902 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 04:22:48,902 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 04:22:48,903 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 04:22:48" (1/1) ... [2024-06-28 04:22:48,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 04:22:48,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 04:22:48,937 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 04:22:48,963 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 04:22:48,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 04:22:48,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 04:22:48,979 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 04:22:48,979 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 04:22:48,979 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 04:22:48,980 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 04:22:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 04:22:48,980 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 04:22:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 04:22:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 04:22:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 04:22:48,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 04:22:48,982 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 04:22:49,151 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 04:22:49,154 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 04:22:49,566 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 04:22:49,567 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 04:22:49,723 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 04:22:49,723 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 04:22:49,724 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 04:22:49 BoogieIcfgContainer [2024-06-28 04:22:49,724 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 04:22:49,727 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 04:22:49,728 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 04:22:49,730 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 04:22:49,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 04:22:47" (1/4) ... [2024-06-28 04:22:49,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1759e44a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 04:22:49, skipping insertion in model container [2024-06-28 04:22:49,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:22:48" (2/4) ... [2024-06-28 04:22:49,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1759e44a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 04:22:49, skipping insertion in model container [2024-06-28 04:22:49,732 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 04:22:48" (3/4) ... [2024-06-28 04:22:49,733 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1759e44a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 04:22:49, skipping insertion in model container [2024-06-28 04:22:49,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 04:22:49" (4/4) ... [2024-06-28 04:22:49,734 INFO L112 eAbstractionObserver]: Analyzing ICFG safe024_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 04:22:49,750 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 04:22:49,750 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 04:22:49,750 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 04:22:49,798 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 04:22:49,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 41 transitions, 94 flow [2024-06-28 04:22:49,861 INFO L124 PetriNetUnfolderBase]: 0/38 cut-off events. [2024-06-28 04:22:49,861 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 04:22:49,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 38 events. 0/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 04:22:49,863 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 41 transitions, 94 flow [2024-06-28 04:22:49,867 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2024-06-28 04:22:49,883 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 04:22:49,892 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;@73dbb5d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 04:22:49,892 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 04:22:49,898 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 04:22:49,899 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 04:22:49,899 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 04:22:49,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:49,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 04:22:49,900 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:22:49,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:49,923 INFO L85 PathProgramCache]: Analyzing trace with hash 363617411, now seen corresponding path program 1 times [2024-06-28 04:22:49,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:49,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811658769] [2024-06-28 04:22:49,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:49,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:50,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:22:50,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:50,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811658769] [2024-06-28 04:22:50,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811658769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:50,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:50,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 04:22:50,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445545836] [2024-06-28 04:22:50,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:50,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 04:22:50,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:51,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 04:22:51,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 04:22:51,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2024-06-28 04:22:51,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:51,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:51,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2024-06-28 04:22:51,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:51,431 INFO L124 PetriNetUnfolderBase]: 942/1465 cut-off events. [2024-06-28 04:22:51,432 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-28 04:22:51,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2981 conditions, 1465 events. 942/1465 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7325 event pairs, 546 based on Foata normal form. 2/1426 useless extension candidates. Maximal degree in co-relation 2969. Up to 1428 conditions per place. [2024-06-28 04:22:51,448 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 31 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2024-06-28 04:22:51,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 171 flow [2024-06-28 04:22:51,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 04:22:51,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 04:22:51,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-06-28 04:22:51,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6504065040650406 [2024-06-28 04:22:51,460 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 3 states and 80 transitions. [2024-06-28 04:22:51,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 171 flow [2024-06-28 04:22:51,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 166 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 04:22:51,465 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 100 flow [2024-06-28 04:22:51,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-06-28 04:22:51,470 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2024-06-28 04:22:51,470 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 100 flow [2024-06-28 04:22:51,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:51,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:51,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:51,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 04:22:51,471 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:22:51,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:51,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1544011682, now seen corresponding path program 1 times [2024-06-28 04:22:51,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:51,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267754278] [2024-06-28 04:22:51,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:51,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:52,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:22:52,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:52,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267754278] [2024-06-28 04:22:52,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267754278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:52,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:52,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 04:22:52,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360295507] [2024-06-28 04:22:52,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:52,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 04:22:52,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:52,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 04:22:52,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 04:22:52,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-06-28 04:22:52,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 100 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 04:22:52,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:52,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-06-28 04:22:52,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:52,433 INFO L124 PetriNetUnfolderBase]: 1134/1735 cut-off events. [2024-06-28 04:22:52,434 INFO L125 PetriNetUnfolderBase]: For 279/279 co-relation queries the response was YES. [2024-06-28 04:22:52,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4012 conditions, 1735 events. 1134/1735 cut-off events. For 279/279 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 8267 event pairs, 590 based on Foata normal form. 6/1738 useless extension candidates. Maximal degree in co-relation 4000. Up to 1676 conditions per place. [2024-06-28 04:22:52,445 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 42 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-06-28 04:22:52,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 256 flow [2024-06-28 04:22:52,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 04:22:52,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 04:22:52,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-06-28 04:22:52,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6158536585365854 [2024-06-28 04:22:52,448 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 100 flow. Second operand 4 states and 101 transitions. [2024-06-28 04:22:52,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 256 flow [2024-06-28 04:22:52,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 04:22:52,450 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 152 flow [2024-06-28 04:22:52,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-06-28 04:22:52,451 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2024-06-28 04:22:52,452 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 152 flow [2024-06-28 04:22:52,452 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 04:22:52,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:52,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:52,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 04:22:52,453 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:22:52,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:52,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1973259754, now seen corresponding path program 1 times [2024-06-28 04:22:52,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:52,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356781405] [2024-06-28 04:22:52,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:52,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:53,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:22:53,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:53,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356781405] [2024-06-28 04:22:53,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356781405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:53,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:53,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 04:22:53,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027221303] [2024-06-28 04:22:53,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:53,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 04:22:53,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:53,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 04:22:53,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 04:22:53,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2024-06-28 04:22:53,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 152 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:53,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:53,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2024-06-28 04:22:53,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:53,780 INFO L124 PetriNetUnfolderBase]: 980/1528 cut-off events. [2024-06-28 04:22:53,780 INFO L125 PetriNetUnfolderBase]: For 738/740 co-relation queries the response was YES. [2024-06-28 04:22:53,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3911 conditions, 1528 events. 980/1528 cut-off events. For 738/740 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 7446 event pairs, 562 based on Foata normal form. 3/1492 useless extension candidates. Maximal degree in co-relation 3895. Up to 1473 conditions per place. [2024-06-28 04:22:53,789 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 40 selfloop transitions, 10 changer transitions 0/59 dead transitions. [2024-06-28 04:22:53,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 59 transitions, 306 flow [2024-06-28 04:22:53,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:22:53,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:22:53,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2024-06-28 04:22:53,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121951219512195 [2024-06-28 04:22:53,792 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 152 flow. Second operand 5 states and 105 transitions. [2024-06-28 04:22:53,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 59 transitions, 306 flow [2024-06-28 04:22:53,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 304 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-28 04:22:53,794 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 221 flow [2024-06-28 04:22:53,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=221, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2024-06-28 04:22:53,795 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2024-06-28 04:22:53,796 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 221 flow [2024-06-28 04:22:53,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:53,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:53,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:53,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 04:22:53,797 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:22:53,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:53,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1898268192, now seen corresponding path program 1 times [2024-06-28 04:22:53,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:53,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387016304] [2024-06-28 04:22:53,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:53,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:54,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:22:54,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:54,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387016304] [2024-06-28 04:22:54,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387016304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:54,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:54,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 04:22:54,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029095096] [2024-06-28 04:22:54,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:54,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 04:22:54,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:54,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 04:22:54,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 04:22:55,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-06-28 04:22:55,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 221 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:55,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:55,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-06-28 04:22:55,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:55,449 INFO L124 PetriNetUnfolderBase]: 1122/1716 cut-off events. [2024-06-28 04:22:55,449 INFO L125 PetriNetUnfolderBase]: For 1611/1619 co-relation queries the response was YES. [2024-06-28 04:22:55,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5029 conditions, 1716 events. 1122/1716 cut-off events. For 1611/1619 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8142 event pairs, 380 based on Foata normal form. 12/1725 useless extension candidates. Maximal degree in co-relation 5009. Up to 1627 conditions per place. [2024-06-28 04:22:55,464 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 58 selfloop transitions, 12 changer transitions 0/77 dead transitions. [2024-06-28 04:22:55,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 77 transitions, 443 flow [2024-06-28 04:22:55,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:22:55,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:22:55,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-28 04:22:55,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5772357723577236 [2024-06-28 04:22:55,467 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 221 flow. Second operand 6 states and 142 transitions. [2024-06-28 04:22:55,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 77 transitions, 443 flow [2024-06-28 04:22:55,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 77 transitions, 430 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 04:22:55,471 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 265 flow [2024-06-28 04:22:55,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=265, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-06-28 04:22:55,472 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2024-06-28 04:22:55,473 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 265 flow [2024-06-28 04:22:55,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:55,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:55,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:55,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 04:22:55,474 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:22:55,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:55,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1032572233, now seen corresponding path program 1 times [2024-06-28 04:22:55,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:55,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155514855] [2024-06-28 04:22:55,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:55,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:56,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:22:56,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:56,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155514855] [2024-06-28 04:22:56,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155514855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:56,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:56,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:22:56,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653727791] [2024-06-28 04:22:56,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:56,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:22:56,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:56,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:22:56,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:22:56,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 04:22:56,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 265 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 04:22:56,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:56,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 04:22:56,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:56,796 INFO L124 PetriNetUnfolderBase]: 1174/1819 cut-off events. [2024-06-28 04:22:56,796 INFO L125 PetriNetUnfolderBase]: For 2968/2972 co-relation queries the response was YES. [2024-06-28 04:22:56,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5730 conditions, 1819 events. 1174/1819 cut-off events. For 2968/2972 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8884 event pairs, 513 based on Foata normal form. 2/1793 useless extension candidates. Maximal degree in co-relation 5707. Up to 1719 conditions per place. [2024-06-28 04:22:56,809 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 54 selfloop transitions, 11 changer transitions 0/75 dead transitions. [2024-06-28 04:22:56,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 75 transitions, 481 flow [2024-06-28 04:22:56,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:22:56,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:22:56,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2024-06-28 04:22:56,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2024-06-28 04:22:56,811 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 265 flow. Second operand 6 states and 117 transitions. [2024-06-28 04:22:56,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 75 transitions, 481 flow [2024-06-28 04:22:56,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 75 transitions, 452 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 04:22:56,815 INFO L231 Difference]: Finished difference. Result has 61 places, 60 transitions, 336 flow [2024-06-28 04:22:56,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=336, PETRI_PLACES=61, PETRI_TRANSITIONS=60} [2024-06-28 04:22:56,816 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2024-06-28 04:22:56,817 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 60 transitions, 336 flow [2024-06-28 04:22:56,817 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 04:22:56,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:56,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:56,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 04:22:56,818 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:22:56,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:56,818 INFO L85 PathProgramCache]: Analyzing trace with hash 599554585, now seen corresponding path program 1 times [2024-06-28 04:22:56,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:56,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468721879] [2024-06-28 04:22:56,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:56,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:57,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:22:57,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:57,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468721879] [2024-06-28 04:22:57,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468721879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:57,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:57,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:22:57,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262270919] [2024-06-28 04:22:57,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:57,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:22:57,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:57,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:22:57,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:22:57,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 04:22:57,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 60 transitions, 336 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 04:22:57,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:57,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 04:22:57,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:58,070 INFO L124 PetriNetUnfolderBase]: 1263/1941 cut-off events. [2024-06-28 04:22:58,071 INFO L125 PetriNetUnfolderBase]: For 3886/3903 co-relation queries the response was YES. [2024-06-28 04:22:58,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6559 conditions, 1941 events. 1263/1941 cut-off events. For 3886/3903 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9379 event pairs, 500 based on Foata normal form. 16/1948 useless extension candidates. Maximal degree in co-relation 6532. Up to 1853 conditions per place. [2024-06-28 04:22:58,085 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 60 selfloop transitions, 13 changer transitions 0/82 dead transitions. [2024-06-28 04:22:58,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 82 transitions, 546 flow [2024-06-28 04:22:58,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:22:58,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:22:58,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-28 04:22:58,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.491869918699187 [2024-06-28 04:22:58,087 INFO L175 Difference]: Start difference. First operand has 61 places, 60 transitions, 336 flow. Second operand 6 states and 121 transitions. [2024-06-28 04:22:58,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 82 transitions, 546 flow [2024-06-28 04:22:58,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 82 transitions, 540 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 04:22:58,092 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 384 flow [2024-06-28 04:22:58,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=384, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2024-06-28 04:22:58,093 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2024-06-28 04:22:58,094 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 384 flow [2024-06-28 04:22:58,094 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 04:22:58,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:58,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:58,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 04:22:58,095 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:22:58,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:58,096 INFO L85 PathProgramCache]: Analyzing trace with hash 2072934645, now seen corresponding path program 2 times [2024-06-28 04:22:58,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:58,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598883538] [2024-06-28 04:22:58,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:58,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:58,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:22:58,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:58,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598883538] [2024-06-28 04:22:58,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598883538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:58,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:58,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:22:58,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755805315] [2024-06-28 04:22:58,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:58,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:22:58,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:58,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:22:58,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:22:58,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 04:22:58,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 384 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 04:22:58,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:58,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 04:22:58,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:59,411 INFO L124 PetriNetUnfolderBase]: 1293/1987 cut-off events. [2024-06-28 04:22:59,411 INFO L125 PetriNetUnfolderBase]: For 5428/5446 co-relation queries the response was YES. [2024-06-28 04:22:59,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7322 conditions, 1987 events. 1293/1987 cut-off events. For 5428/5446 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9662 event pairs, 499 based on Foata normal form. 13/1987 useless extension candidates. Maximal degree in co-relation 7292. Up to 1865 conditions per place. [2024-06-28 04:22:59,428 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 58 selfloop transitions, 19 changer transitions 0/86 dead transitions. [2024-06-28 04:22:59,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 86 transitions, 624 flow [2024-06-28 04:22:59,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:22:59,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:22:59,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-28 04:22:59,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.491869918699187 [2024-06-28 04:22:59,430 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 384 flow. Second operand 6 states and 121 transitions. [2024-06-28 04:22:59,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 86 transitions, 624 flow [2024-06-28 04:22:59,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 86 transitions, 594 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 04:22:59,437 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 462 flow [2024-06-28 04:22:59,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=462, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2024-06-28 04:22:59,438 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 27 predicate places. [2024-06-28 04:22:59,438 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 462 flow [2024-06-28 04:22:59,438 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 04:22:59,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:59,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:59,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 04:22:59,439 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:22:59,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:59,440 INFO L85 PathProgramCache]: Analyzing trace with hash 2072943573, now seen corresponding path program 1 times [2024-06-28 04:22:59,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:59,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595534743] [2024-06-28 04:22:59,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:59,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:00,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:00,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:00,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595534743] [2024-06-28 04:23:00,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595534743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:00,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:00,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:23:00,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501433894] [2024-06-28 04:23:00,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:00,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:23:00,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:00,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:23:00,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:23:00,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 04:23:00,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 462 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 04:23:00,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:00,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 04:23:00,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:01,323 INFO L124 PetriNetUnfolderBase]: 1263/1955 cut-off events. [2024-06-28 04:23:01,324 INFO L125 PetriNetUnfolderBase]: For 7340/7364 co-relation queries the response was YES. [2024-06-28 04:23:01,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7606 conditions, 1955 events. 1263/1955 cut-off events. For 7340/7364 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9675 event pairs, 503 based on Foata normal form. 2/1925 useless extension candidates. Maximal degree in co-relation 7574. Up to 1822 conditions per place. [2024-06-28 04:23:01,337 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 64 selfloop transitions, 14 changer transitions 0/91 dead transitions. [2024-06-28 04:23:01,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 91 transitions, 680 flow [2024-06-28 04:23:01,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:23:01,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:23:01,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-28 04:23:01,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47038327526132406 [2024-06-28 04:23:01,339 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 462 flow. Second operand 7 states and 135 transitions. [2024-06-28 04:23:01,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 91 transitions, 680 flow [2024-06-28 04:23:01,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 91 transitions, 649 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-28 04:23:01,346 INFO L231 Difference]: Finished difference. Result has 74 places, 72 transitions, 487 flow [2024-06-28 04:23:01,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=487, PETRI_PLACES=74, PETRI_TRANSITIONS=72} [2024-06-28 04:23:01,347 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 32 predicate places. [2024-06-28 04:23:01,347 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 72 transitions, 487 flow [2024-06-28 04:23:01,347 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 04:23:01,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:01,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:01,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 04:23:01,348 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:01,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:01,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1406323648, now seen corresponding path program 1 times [2024-06-28 04:23:01,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:01,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731781929] [2024-06-28 04:23:01,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:01,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:02,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:02,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:02,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731781929] [2024-06-28 04:23:02,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731781929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:02,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:02,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:23:02,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247601172] [2024-06-28 04:23:02,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:02,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:23:02,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:02,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:23:02,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:23:02,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:23:02,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 72 transitions, 487 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 04:23:02,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:02,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:23:02,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:02,760 INFO L124 PetriNetUnfolderBase]: 1364/2085 cut-off events. [2024-06-28 04:23:02,760 INFO L125 PetriNetUnfolderBase]: For 8370/8370 co-relation queries the response was YES. [2024-06-28 04:23:02,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8518 conditions, 2085 events. 1364/2085 cut-off events. For 8370/8370 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 10025 event pairs, 518 based on Foata normal form. 4/2086 useless extension candidates. Maximal degree in co-relation 8484. Up to 1981 conditions per place. [2024-06-28 04:23:02,779 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 86 selfloop transitions, 14 changer transitions 0/105 dead transitions. [2024-06-28 04:23:02,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 105 transitions, 811 flow [2024-06-28 04:23:02,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:23:02,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:23:02,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-28 04:23:02,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46689895470383275 [2024-06-28 04:23:02,780 INFO L175 Difference]: Start difference. First operand has 74 places, 72 transitions, 487 flow. Second operand 7 states and 134 transitions. [2024-06-28 04:23:02,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 105 transitions, 811 flow [2024-06-28 04:23:02,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 105 transitions, 779 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 04:23:02,791 INFO L231 Difference]: Finished difference. Result has 78 places, 81 transitions, 573 flow [2024-06-28 04:23:02,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=573, PETRI_PLACES=78, PETRI_TRANSITIONS=81} [2024-06-28 04:23:02,792 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 36 predicate places. [2024-06-28 04:23:02,792 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 81 transitions, 573 flow [2024-06-28 04:23:02,793 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 04:23:02,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:02,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:02,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 04:23:02,793 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:02,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:02,794 INFO L85 PathProgramCache]: Analyzing trace with hash -163527308, now seen corresponding path program 2 times [2024-06-28 04:23:02,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:02,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383120776] [2024-06-28 04:23:02,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:02,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:02,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:03,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:03,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:03,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383120776] [2024-06-28 04:23:03,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383120776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:03,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:03,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:23:03,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894757981] [2024-06-28 04:23:03,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:03,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:23:03,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:03,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:23:03,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:23:03,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:23:03,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 81 transitions, 573 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 04:23:03,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:03,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:23:03,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:04,307 INFO L124 PetriNetUnfolderBase]: 1402/2140 cut-off events. [2024-06-28 04:23:04,307 INFO L125 PetriNetUnfolderBase]: For 10953/10953 co-relation queries the response was YES. [2024-06-28 04:23:04,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9311 conditions, 2140 events. 1402/2140 cut-off events. For 10953/10953 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 10405 event pairs, 517 based on Foata normal form. 4/2138 useless extension candidates. Maximal degree in co-relation 9274. Up to 1953 conditions per place. [2024-06-28 04:23:04,326 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 82 selfloop transitions, 29 changer transitions 0/116 dead transitions. [2024-06-28 04:23:04,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 116 transitions, 987 flow [2024-06-28 04:23:04,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:23:04,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:23:04,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 04:23:04,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45426829268292684 [2024-06-28 04:23:04,328 INFO L175 Difference]: Start difference. First operand has 78 places, 81 transitions, 573 flow. Second operand 8 states and 149 transitions. [2024-06-28 04:23:04,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 116 transitions, 987 flow [2024-06-28 04:23:04,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 116 transitions, 960 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-28 04:23:04,343 INFO L231 Difference]: Finished difference. Result has 86 places, 92 transitions, 715 flow [2024-06-28 04:23:04,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=715, PETRI_PLACES=86, PETRI_TRANSITIONS=92} [2024-06-28 04:23:04,346 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 44 predicate places. [2024-06-28 04:23:04,347 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 92 transitions, 715 flow [2024-06-28 04:23:04,347 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 04:23:04,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:04,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:04,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 04:23:04,348 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:04,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:04,349 INFO L85 PathProgramCache]: Analyzing trace with hash -164724040, now seen corresponding path program 3 times [2024-06-28 04:23:04,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:04,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495313133] [2024-06-28 04:23:04,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:04,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:05,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:05,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:05,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495313133] [2024-06-28 04:23:05,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495313133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:05,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:05,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:23:05,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549999350] [2024-06-28 04:23:05,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:05,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:23:05,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:05,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:23:05,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:23:05,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:23:05,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 92 transitions, 715 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 04:23:05,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:05,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:23:05,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:05,708 INFO L124 PetriNetUnfolderBase]: 1392/2126 cut-off events. [2024-06-28 04:23:05,708 INFO L125 PetriNetUnfolderBase]: For 13447/13447 co-relation queries the response was YES. [2024-06-28 04:23:05,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9861 conditions, 2126 events. 1392/2126 cut-off events. For 13447/13447 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 10281 event pairs, 528 based on Foata normal form. 4/2124 useless extension candidates. Maximal degree in co-relation 9820. Up to 1945 conditions per place. [2024-06-28 04:23:05,727 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 81 selfloop transitions, 27 changer transitions 0/113 dead transitions. [2024-06-28 04:23:05,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 113 transitions, 989 flow [2024-06-28 04:23:05,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:23:05,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:23:05,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-28 04:23:05,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4738675958188153 [2024-06-28 04:23:05,729 INFO L175 Difference]: Start difference. First operand has 86 places, 92 transitions, 715 flow. Second operand 7 states and 136 transitions. [2024-06-28 04:23:05,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 113 transitions, 989 flow [2024-06-28 04:23:05,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 113 transitions, 955 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-06-28 04:23:05,747 INFO L231 Difference]: Finished difference. Result has 92 places, 92 transitions, 743 flow [2024-06-28 04:23:05,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=743, PETRI_PLACES=92, PETRI_TRANSITIONS=92} [2024-06-28 04:23:05,748 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 50 predicate places. [2024-06-28 04:23:05,748 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 92 transitions, 743 flow [2024-06-28 04:23:05,749 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 04:23:05,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:05,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:05,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 04:23:05,749 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:05,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:05,750 INFO L85 PathProgramCache]: Analyzing trace with hash -163257918, now seen corresponding path program 1 times [2024-06-28 04:23:05,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:05,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168444149] [2024-06-28 04:23:05,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:05,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:06,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:06,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:06,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168444149] [2024-06-28 04:23:06,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168444149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:06,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:06,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:23:07,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999299696] [2024-06-28 04:23:07,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:07,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:23:07,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:07,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:23:07,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:23:07,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 04:23:07,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 92 transitions, 743 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 04:23:07,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:07,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 04:23:07,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:07,615 INFO L124 PetriNetUnfolderBase]: 1305/2036 cut-off events. [2024-06-28 04:23:07,615 INFO L125 PetriNetUnfolderBase]: For 15261/15261 co-relation queries the response was YES. [2024-06-28 04:23:07,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9573 conditions, 2036 events. 1305/2036 cut-off events. For 15261/15261 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 10127 event pairs, 525 based on Foata normal form. 4/2020 useless extension candidates. Maximal degree in co-relation 9529. Up to 1859 conditions per place. [2024-06-28 04:23:07,633 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 89 selfloop transitions, 16 changer transitions 0/118 dead transitions. [2024-06-28 04:23:07,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 118 transitions, 1032 flow [2024-06-28 04:23:07,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:23:07,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:23:07,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 04:23:07,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46646341463414637 [2024-06-28 04:23:07,635 INFO L175 Difference]: Start difference. First operand has 92 places, 92 transitions, 743 flow. Second operand 8 states and 153 transitions. [2024-06-28 04:23:07,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 118 transitions, 1032 flow [2024-06-28 04:23:07,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 118 transitions, 945 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 04:23:07,652 INFO L231 Difference]: Finished difference. Result has 93 places, 94 transitions, 715 flow [2024-06-28 04:23:07,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=715, PETRI_PLACES=93, PETRI_TRANSITIONS=94} [2024-06-28 04:23:07,653 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 51 predicate places. [2024-06-28 04:23:07,653 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 94 transitions, 715 flow [2024-06-28 04:23:07,654 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 04:23:07,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:07,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:07,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 04:23:07,654 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:07,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:07,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1404300244, now seen corresponding path program 1 times [2024-06-28 04:23:07,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:07,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261522309] [2024-06-28 04:23:07,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:07,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:08,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:08,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:08,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261522309] [2024-06-28 04:23:08,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261522309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:08,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:08,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:23:08,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353765371] [2024-06-28 04:23:08,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:08,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:23:08,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:08,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:23:08,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:23:08,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 04:23:08,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 94 transitions, 715 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 04:23:08,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:08,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 04:23:08,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:09,173 INFO L124 PetriNetUnfolderBase]: 1314/2035 cut-off events. [2024-06-28 04:23:09,173 INFO L125 PetriNetUnfolderBase]: For 17493/17528 co-relation queries the response was YES. [2024-06-28 04:23:09,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9708 conditions, 2035 events. 1314/2035 cut-off events. For 17493/17528 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 10079 event pairs, 523 based on Foata normal form. 21/2014 useless extension candidates. Maximal degree in co-relation 9665. Up to 1871 conditions per place. [2024-06-28 04:23:09,192 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 85 selfloop transitions, 19 changer transitions 0/121 dead transitions. [2024-06-28 04:23:09,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 121 transitions, 1020 flow [2024-06-28 04:23:09,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:23:09,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:23:09,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-28 04:23:09,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4912891986062718 [2024-06-28 04:23:09,194 INFO L175 Difference]: Start difference. First operand has 93 places, 94 transitions, 715 flow. Second operand 7 states and 141 transitions. [2024-06-28 04:23:09,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 121 transitions, 1020 flow [2024-06-28 04:23:09,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 121 transitions, 979 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 04:23:09,210 INFO L231 Difference]: Finished difference. Result has 94 places, 97 transitions, 756 flow [2024-06-28 04:23:09,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=756, PETRI_PLACES=94, PETRI_TRANSITIONS=97} [2024-06-28 04:23:09,210 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 52 predicate places. [2024-06-28 04:23:09,211 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 97 transitions, 756 flow [2024-06-28 04:23:09,211 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 04:23:09,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:09,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:09,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 04:23:09,212 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:09,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:09,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1409068788, now seen corresponding path program 1 times [2024-06-28 04:23:09,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:09,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689584233] [2024-06-28 04:23:09,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:09,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:10,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:10,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:10,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689584233] [2024-06-28 04:23:10,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689584233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:10,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:10,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:23:10,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849058606] [2024-06-28 04:23:10,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:10,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:23:10,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:10,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:23:10,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:23:10,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:23:10,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 97 transitions, 756 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 04:23:10,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:10,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:23:10,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:10,938 INFO L124 PetriNetUnfolderBase]: 1398/2145 cut-off events. [2024-06-28 04:23:10,938 INFO L125 PetriNetUnfolderBase]: For 19304/19304 co-relation queries the response was YES. [2024-06-28 04:23:10,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10493 conditions, 2145 events. 1398/2145 cut-off events. For 19304/19304 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 10347 event pairs, 359 based on Foata normal form. 4/2146 useless extension candidates. Maximal degree in co-relation 10449. Up to 2013 conditions per place. [2024-06-28 04:23:10,953 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 104 selfloop transitions, 19 changer transitions 0/128 dead transitions. [2024-06-28 04:23:10,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 128 transitions, 1107 flow [2024-06-28 04:23:10,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:23:10,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:23:10,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 04:23:10,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-28 04:23:10,955 INFO L175 Difference]: Start difference. First operand has 94 places, 97 transitions, 756 flow. Second operand 8 states and 152 transitions. [2024-06-28 04:23:10,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 128 transitions, 1107 flow [2024-06-28 04:23:10,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 128 transitions, 1051 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 04:23:10,976 INFO L231 Difference]: Finished difference. Result has 97 places, 101 transitions, 785 flow [2024-06-28 04:23:10,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=785, PETRI_PLACES=97, PETRI_TRANSITIONS=101} [2024-06-28 04:23:10,977 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 55 predicate places. [2024-06-28 04:23:10,977 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 101 transitions, 785 flow [2024-06-28 04:23:10,977 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 04:23:10,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:10,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:10,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 04:23:10,978 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:10,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:10,978 INFO L85 PathProgramCache]: Analyzing trace with hash -774609164, now seen corresponding path program 2 times [2024-06-28 04:23:10,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:10,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959041388] [2024-06-28 04:23:10,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:10,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:12,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:12,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:12,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959041388] [2024-06-28 04:23:12,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959041388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:12,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:12,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:23:12,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758416356] [2024-06-28 04:23:12,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:12,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:23:12,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:12,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:23:12,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:23:12,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:23:12,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 101 transitions, 785 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 04:23:12,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:12,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:23:12,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:12,591 INFO L124 PetriNetUnfolderBase]: 1409/2161 cut-off events. [2024-06-28 04:23:12,591 INFO L125 PetriNetUnfolderBase]: For 22319/22319 co-relation queries the response was YES. [2024-06-28 04:23:12,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11130 conditions, 2161 events. 1409/2161 cut-off events. For 22319/22319 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 10539 event pairs, 484 based on Foata normal form. 2/2157 useless extension candidates. Maximal degree in co-relation 11085. Up to 2016 conditions per place. [2024-06-28 04:23:12,610 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 106 selfloop transitions, 28 changer transitions 0/139 dead transitions. [2024-06-28 04:23:12,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 139 transitions, 1226 flow [2024-06-28 04:23:12,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:23:12,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:23:12,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 04:23:12,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573170731707317 [2024-06-28 04:23:12,613 INFO L175 Difference]: Start difference. First operand has 97 places, 101 transitions, 785 flow. Second operand 8 states and 150 transitions. [2024-06-28 04:23:12,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 139 transitions, 1226 flow [2024-06-28 04:23:12,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 139 transitions, 1164 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 04:23:12,635 INFO L231 Difference]: Finished difference. Result has 102 places, 116 transitions, 937 flow [2024-06-28 04:23:12,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=937, PETRI_PLACES=102, PETRI_TRANSITIONS=116} [2024-06-28 04:23:12,636 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 60 predicate places. [2024-06-28 04:23:12,636 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 116 transitions, 937 flow [2024-06-28 04:23:12,637 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 04:23:12,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:12,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:12,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 04:23:12,637 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:12,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:12,638 INFO L85 PathProgramCache]: Analyzing trace with hash -803203006, now seen corresponding path program 3 times [2024-06-28 04:23:12,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:12,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127634631] [2024-06-28 04:23:12,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:12,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:13,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:13,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:13,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127634631] [2024-06-28 04:23:13,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127634631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:13,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:13,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:23:13,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599488425] [2024-06-28 04:23:13,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:13,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:23:13,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:13,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:23:13,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:23:13,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:23:13,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 116 transitions, 937 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 04:23:13,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:13,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:23:13,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:14,241 INFO L124 PetriNetUnfolderBase]: 1420/2177 cut-off events. [2024-06-28 04:23:14,241 INFO L125 PetriNetUnfolderBase]: For 25296/25296 co-relation queries the response was YES. [2024-06-28 04:23:14,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11737 conditions, 2177 events. 1420/2177 cut-off events. For 25296/25296 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 10564 event pairs, 484 based on Foata normal form. 2/2173 useless extension candidates. Maximal degree in co-relation 11688. Up to 2032 conditions per place. [2024-06-28 04:23:14,258 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 108 selfloop transitions, 31 changer transitions 0/144 dead transitions. [2024-06-28 04:23:14,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 144 transitions, 1330 flow [2024-06-28 04:23:14,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:23:14,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:23:14,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 04:23:14,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45426829268292684 [2024-06-28 04:23:14,260 INFO L175 Difference]: Start difference. First operand has 102 places, 116 transitions, 937 flow. Second operand 8 states and 149 transitions. [2024-06-28 04:23:14,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 144 transitions, 1330 flow [2024-06-28 04:23:14,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 144 transitions, 1285 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-28 04:23:14,284 INFO L231 Difference]: Finished difference. Result has 109 places, 122 transitions, 1039 flow [2024-06-28 04:23:14,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1039, PETRI_PLACES=109, PETRI_TRANSITIONS=122} [2024-06-28 04:23:14,285 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 67 predicate places. [2024-06-28 04:23:14,285 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 122 transitions, 1039 flow [2024-06-28 04:23:14,285 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 04:23:14,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:14,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:14,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 04:23:14,286 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:14,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:14,287 INFO L85 PathProgramCache]: Analyzing trace with hash 817900464, now seen corresponding path program 4 times [2024-06-28 04:23:14,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:14,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733700797] [2024-06-28 04:23:14,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:14,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:15,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:15,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:15,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733700797] [2024-06-28 04:23:15,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733700797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:15,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:15,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:23:15,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806111812] [2024-06-28 04:23:15,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:15,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:23:15,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:15,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:23:15,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:23:15,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:23:15,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 122 transitions, 1039 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 04:23:15,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:15,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:23:15,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:15,973 INFO L124 PetriNetUnfolderBase]: 1442/2209 cut-off events. [2024-06-28 04:23:15,973 INFO L125 PetriNetUnfolderBase]: For 29143/29143 co-relation queries the response was YES. [2024-06-28 04:23:15,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12475 conditions, 2209 events. 1442/2209 cut-off events. For 29143/29143 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 10745 event pairs, 484 based on Foata normal form. 4/2207 useless extension candidates. Maximal degree in co-relation 12423. Up to 1944 conditions per place. [2024-06-28 04:23:15,987 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 94 selfloop transitions, 58 changer transitions 0/157 dead transitions. [2024-06-28 04:23:15,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 157 transitions, 1567 flow [2024-06-28 04:23:15,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:23:15,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:23:15,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-28 04:23:15,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715447154471545 [2024-06-28 04:23:15,990 INFO L175 Difference]: Start difference. First operand has 109 places, 122 transitions, 1039 flow. Second operand 9 states and 174 transitions. [2024-06-28 04:23:15,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 157 transitions, 1567 flow [2024-06-28 04:23:16,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 157 transitions, 1513 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-28 04:23:16,013 INFO L231 Difference]: Finished difference. Result has 115 places, 129 transitions, 1213 flow [2024-06-28 04:23:16,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=985, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1213, PETRI_PLACES=115, PETRI_TRANSITIONS=129} [2024-06-28 04:23:16,014 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 73 predicate places. [2024-06-28 04:23:16,014 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 129 transitions, 1213 flow [2024-06-28 04:23:16,014 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 04:23:16,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:16,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:16,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 04:23:16,015 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:16,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:16,015 INFO L85 PathProgramCache]: Analyzing trace with hash 588556737, now seen corresponding path program 1 times [2024-06-28 04:23:16,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:16,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086101070] [2024-06-28 04:23:16,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:16,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:17,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:17,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:17,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086101070] [2024-06-28 04:23:17,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086101070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:17,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:17,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:23:17,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984453000] [2024-06-28 04:23:17,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:17,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:23:17,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:17,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:23:17,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:23:17,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:23:17,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 129 transitions, 1213 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 04:23:17,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:17,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:23:17,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:17,846 INFO L124 PetriNetUnfolderBase]: 1500/2312 cut-off events. [2024-06-28 04:23:17,846 INFO L125 PetriNetUnfolderBase]: For 34551/34551 co-relation queries the response was YES. [2024-06-28 04:23:17,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13672 conditions, 2312 events. 1500/2312 cut-off events. For 34551/34551 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 11350 event pairs, 442 based on Foata normal form. 2/2311 useless extension candidates. Maximal degree in co-relation 13619. Up to 2168 conditions per place. [2024-06-28 04:23:17,862 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 146 selfloop transitions, 28 changer transitions 0/179 dead transitions. [2024-06-28 04:23:17,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 179 transitions, 1853 flow [2024-06-28 04:23:17,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:23:17,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:23:17,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 04:23:17,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46070460704607047 [2024-06-28 04:23:17,864 INFO L175 Difference]: Start difference. First operand has 115 places, 129 transitions, 1213 flow. Second operand 9 states and 170 transitions. [2024-06-28 04:23:17,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 179 transitions, 1853 flow [2024-06-28 04:23:17,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 179 transitions, 1762 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 04:23:17,901 INFO L231 Difference]: Finished difference. Result has 122 places, 150 transitions, 1444 flow [2024-06-28 04:23:17,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1126, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1444, PETRI_PLACES=122, PETRI_TRANSITIONS=150} [2024-06-28 04:23:17,901 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 80 predicate places. [2024-06-28 04:23:17,901 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 150 transitions, 1444 flow [2024-06-28 04:23:17,902 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 04:23:17,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:17,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:17,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 04:23:17,902 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:17,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:17,903 INFO L85 PathProgramCache]: Analyzing trace with hash 583635301, now seen corresponding path program 2 times [2024-06-28 04:23:17,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:17,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114939948] [2024-06-28 04:23:17,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:17,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:18,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:18,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:18,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114939948] [2024-06-28 04:23:18,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114939948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:18,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:18,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:23:18,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868994723] [2024-06-28 04:23:18,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:18,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:23:18,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:18,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:23:18,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:23:19,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:23:19,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 150 transitions, 1444 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 04:23:19,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:19,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:23:19,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:19,613 INFO L124 PetriNetUnfolderBase]: 1495/2305 cut-off events. [2024-06-28 04:23:19,614 INFO L125 PetriNetUnfolderBase]: For 36909/36909 co-relation queries the response was YES. [2024-06-28 04:23:19,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14127 conditions, 2305 events. 1495/2305 cut-off events. For 36909/36909 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 11283 event pairs, 419 based on Foata normal form. 2/2304 useless extension candidates. Maximal degree in co-relation 14069. Up to 2138 conditions per place. [2024-06-28 04:23:19,629 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 145 selfloop transitions, 33 changer transitions 0/183 dead transitions. [2024-06-28 04:23:19,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 183 transitions, 1964 flow [2024-06-28 04:23:19,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:23:19,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:23:19,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 04:23:19,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-28 04:23:19,631 INFO L175 Difference]: Start difference. First operand has 122 places, 150 transitions, 1444 flow. Second operand 8 states and 152 transitions. [2024-06-28 04:23:19,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 183 transitions, 1964 flow [2024-06-28 04:23:19,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 183 transitions, 1872 flow, removed 43 selfloop flow, removed 2 redundant places. [2024-06-28 04:23:19,666 INFO L231 Difference]: Finished difference. Result has 129 places, 156 transitions, 1529 flow [2024-06-28 04:23:19,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1352, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1529, PETRI_PLACES=129, PETRI_TRANSITIONS=156} [2024-06-28 04:23:19,667 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 87 predicate places. [2024-06-28 04:23:19,667 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 156 transitions, 1529 flow [2024-06-28 04:23:19,667 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 04:23:19,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:19,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:19,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 04:23:19,668 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:19,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:19,668 INFO L85 PathProgramCache]: Analyzing trace with hash 731460227, now seen corresponding path program 1 times [2024-06-28 04:23:19,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:19,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269214239] [2024-06-28 04:23:19,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:19,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:20,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:20,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:20,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269214239] [2024-06-28 04:23:20,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269214239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:20,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:20,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:20,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26783160] [2024-06-28 04:23:20,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:20,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:20,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:20,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:20,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:20,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:23:20,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 156 transitions, 1529 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 04:23:20,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:20,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:23:20,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:21,393 INFO L124 PetriNetUnfolderBase]: 1587/2462 cut-off events. [2024-06-28 04:23:21,393 INFO L125 PetriNetUnfolderBase]: For 46755/46755 co-relation queries the response was YES. [2024-06-28 04:23:21,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15417 conditions, 2462 events. 1587/2462 cut-off events. For 46755/46755 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 12262 event pairs, 420 based on Foata normal form. 24/2483 useless extension candidates. Maximal degree in co-relation 15356. Up to 2160 conditions per place. [2024-06-28 04:23:21,410 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 159 selfloop transitions, 28 changer transitions 0/192 dead transitions. [2024-06-28 04:23:21,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 192 transitions, 2075 flow [2024-06-28 04:23:21,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:23:21,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:23:21,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-28 04:23:21,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46883468834688347 [2024-06-28 04:23:21,411 INFO L175 Difference]: Start difference. First operand has 129 places, 156 transitions, 1529 flow. Second operand 9 states and 173 transitions. [2024-06-28 04:23:21,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 192 transitions, 2075 flow [2024-06-28 04:23:21,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 192 transitions, 1985 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-28 04:23:21,506 INFO L231 Difference]: Finished difference. Result has 135 places, 158 transitions, 1544 flow [2024-06-28 04:23:21,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1443, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1544, PETRI_PLACES=135, PETRI_TRANSITIONS=158} [2024-06-28 04:23:21,507 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 93 predicate places. [2024-06-28 04:23:21,507 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 158 transitions, 1544 flow [2024-06-28 04:23:21,507 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 04:23:21,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:21,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:21,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 04:23:21,507 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:21,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:21,508 INFO L85 PathProgramCache]: Analyzing trace with hash 2022944161, now seen corresponding path program 2 times [2024-06-28 04:23:21,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:21,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502574792] [2024-06-28 04:23:21,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:21,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:22,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:22,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:22,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502574792] [2024-06-28 04:23:22,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502574792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:22,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:22,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:22,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822714756] [2024-06-28 04:23:22,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:22,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:22,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:22,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:22,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:22,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:23:22,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 158 transitions, 1544 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 04:23:22,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:22,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:23:22,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:23,361 INFO L124 PetriNetUnfolderBase]: 1715/2670 cut-off events. [2024-06-28 04:23:23,361 INFO L125 PetriNetUnfolderBase]: For 48681/48681 co-relation queries the response was YES. [2024-06-28 04:23:23,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16905 conditions, 2670 events. 1715/2670 cut-off events. For 48681/48681 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 13568 event pairs, 422 based on Foata normal form. 4/2665 useless extension candidates. Maximal degree in co-relation 16842. Up to 1975 conditions per place. [2024-06-28 04:23:23,380 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 127 selfloop transitions, 67 changer transitions 0/199 dead transitions. [2024-06-28 04:23:23,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 199 transitions, 2296 flow [2024-06-28 04:23:23,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:23:23,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:23:23,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-28 04:23:23,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48509485094850946 [2024-06-28 04:23:23,382 INFO L175 Difference]: Start difference. First operand has 135 places, 158 transitions, 1544 flow. Second operand 9 states and 179 transitions. [2024-06-28 04:23:23,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 199 transitions, 2296 flow [2024-06-28 04:23:23,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 199 transitions, 2231 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 04:23:23,424 INFO L231 Difference]: Finished difference. Result has 137 places, 162 transitions, 1696 flow [2024-06-28 04:23:23,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1479, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1696, PETRI_PLACES=137, PETRI_TRANSITIONS=162} [2024-06-28 04:23:23,425 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 95 predicate places. [2024-06-28 04:23:23,425 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 162 transitions, 1696 flow [2024-06-28 04:23:23,425 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 04:23:23,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:23,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:23,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 04:23:23,426 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:23,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:23,426 INFO L85 PathProgramCache]: Analyzing trace with hash 2022617731, now seen corresponding path program 3 times [2024-06-28 04:23:23,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:23,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059314978] [2024-06-28 04:23:23,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:23,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:24,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:24,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:24,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059314978] [2024-06-28 04:23:24,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059314978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:24,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:24,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:24,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010160145] [2024-06-28 04:23:24,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:24,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:24,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:24,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:24,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:24,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:23:24,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 162 transitions, 1696 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 04:23:24,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:24,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:23:24,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:25,425 INFO L124 PetriNetUnfolderBase]: 1807/2822 cut-off events. [2024-06-28 04:23:25,425 INFO L125 PetriNetUnfolderBase]: For 57910/57910 co-relation queries the response was YES. [2024-06-28 04:23:25,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18225 conditions, 2822 events. 1807/2822 cut-off events. For 57910/57910 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 14607 event pairs, 472 based on Foata normal form. 24/2837 useless extension candidates. Maximal degree in co-relation 18161. Up to 2382 conditions per place. [2024-06-28 04:23:25,444 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 134 selfloop transitions, 63 changer transitions 0/202 dead transitions. [2024-06-28 04:23:25,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 202 transitions, 2356 flow [2024-06-28 04:23:25,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:23:25,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:23:25,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-28 04:23:25,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2024-06-28 04:23:25,446 INFO L175 Difference]: Start difference. First operand has 137 places, 162 transitions, 1696 flow. Second operand 10 states and 195 transitions. [2024-06-28 04:23:25,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 202 transitions, 2356 flow [2024-06-28 04:23:25,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 202 transitions, 2206 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 04:23:25,497 INFO L231 Difference]: Finished difference. Result has 141 places, 164 transitions, 1726 flow [2024-06-28 04:23:25,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1554, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1726, PETRI_PLACES=141, PETRI_TRANSITIONS=164} [2024-06-28 04:23:25,497 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 99 predicate places. [2024-06-28 04:23:25,497 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 164 transitions, 1726 flow [2024-06-28 04:23:25,498 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 04:23:25,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:25,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:25,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 04:23:25,498 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:25,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:25,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1756920451, now seen corresponding path program 4 times [2024-06-28 04:23:25,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:25,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740708957] [2024-06-28 04:23:25,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:25,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:26,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:26,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:26,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740708957] [2024-06-28 04:23:26,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740708957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:26,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:26,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:26,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052144624] [2024-06-28 04:23:26,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:26,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:26,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:26,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:26,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:26,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:23:26,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 164 transitions, 1726 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 04:23:26,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:26,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:23:26,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:27,482 INFO L124 PetriNetUnfolderBase]: 1758/2747 cut-off events. [2024-06-28 04:23:27,482 INFO L125 PetriNetUnfolderBase]: For 55467/55467 co-relation queries the response was YES. [2024-06-28 04:23:27,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17316 conditions, 2747 events. 1758/2747 cut-off events. For 55467/55467 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 14163 event pairs, 447 based on Foata normal form. 26/2764 useless extension candidates. Maximal degree in co-relation 17251. Up to 2368 conditions per place. [2024-06-28 04:23:27,505 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 144 selfloop transitions, 47 changer transitions 0/196 dead transitions. [2024-06-28 04:23:27,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 196 transitions, 2238 flow [2024-06-28 04:23:27,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:23:27,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:23:27,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-28 04:23:27,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2024-06-28 04:23:27,506 INFO L175 Difference]: Start difference. First operand has 141 places, 164 transitions, 1726 flow. Second operand 9 states and 177 transitions. [2024-06-28 04:23:27,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 196 transitions, 2238 flow [2024-06-28 04:23:27,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 196 transitions, 2092 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 04:23:27,568 INFO L231 Difference]: Finished difference. Result has 143 places, 164 transitions, 1696 flow [2024-06-28 04:23:27,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1696, PETRI_PLACES=143, PETRI_TRANSITIONS=164} [2024-06-28 04:23:27,569 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 101 predicate places. [2024-06-28 04:23:27,569 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 164 transitions, 1696 flow [2024-06-28 04:23:27,569 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 04:23:27,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:27,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:27,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 04:23:27,570 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:27,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:27,570 INFO L85 PathProgramCache]: Analyzing trace with hash 994364005, now seen corresponding path program 1 times [2024-06-28 04:23:27,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:27,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208722192] [2024-06-28 04:23:27,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:27,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:28,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:28,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:28,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208722192] [2024-06-28 04:23:28,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208722192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:28,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:28,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:23:28,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100283894] [2024-06-28 04:23:28,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:28,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:23:28,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:28,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:23:28,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:23:28,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 04:23:28,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 164 transitions, 1696 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 04:23:28,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:28,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 04:23:28,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:29,309 INFO L124 PetriNetUnfolderBase]: 1751/2787 cut-off events. [2024-06-28 04:23:29,309 INFO L125 PetriNetUnfolderBase]: For 60200/60256 co-relation queries the response was YES. [2024-06-28 04:23:29,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17565 conditions, 2787 events. 1751/2787 cut-off events. For 60200/60256 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 14947 event pairs, 376 based on Foata normal form. 10/2737 useless extension candidates. Maximal degree in co-relation 17498. Up to 2433 conditions per place. [2024-06-28 04:23:29,331 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 128 selfloop transitions, 41 changer transitions 0/208 dead transitions. [2024-06-28 04:23:29,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 208 transitions, 2317 flow [2024-06-28 04:23:29,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:23:29,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:23:29,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-28 04:23:29,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46612466124661245 [2024-06-28 04:23:29,332 INFO L175 Difference]: Start difference. First operand has 143 places, 164 transitions, 1696 flow. Second operand 9 states and 172 transitions. [2024-06-28 04:23:29,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 208 transitions, 2317 flow [2024-06-28 04:23:29,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 208 transitions, 2175 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 04:23:29,389 INFO L231 Difference]: Finished difference. Result has 147 places, 182 transitions, 1893 flow [2024-06-28 04:23:29,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1558, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1893, PETRI_PLACES=147, PETRI_TRANSITIONS=182} [2024-06-28 04:23:29,390 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 105 predicate places. [2024-06-28 04:23:29,390 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 182 transitions, 1893 flow [2024-06-28 04:23:29,390 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 04:23:29,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:29,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:29,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 04:23:29,391 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:29,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:29,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1624131113, now seen corresponding path program 2 times [2024-06-28 04:23:29,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:29,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771112012] [2024-06-28 04:23:29,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:29,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:30,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:30,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:30,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771112012] [2024-06-28 04:23:30,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771112012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:30,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:30,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:23:30,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971595490] [2024-06-28 04:23:30,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:30,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:23:30,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:30,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:23:30,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:23:30,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 04:23:30,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 182 transitions, 1893 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 04:23:30,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:30,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 04:23:30,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:31,112 INFO L124 PetriNetUnfolderBase]: 1763/2811 cut-off events. [2024-06-28 04:23:31,112 INFO L125 PetriNetUnfolderBase]: For 64975/65043 co-relation queries the response was YES. [2024-06-28 04:23:31,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17952 conditions, 2811 events. 1763/2811 cut-off events. For 64975/65043 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 15159 event pairs, 405 based on Foata normal form. 12/2774 useless extension candidates. Maximal degree in co-relation 17881. Up to 2421 conditions per place. [2024-06-28 04:23:31,130 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 122 selfloop transitions, 51 changer transitions 0/212 dead transitions. [2024-06-28 04:23:31,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 212 transitions, 2369 flow [2024-06-28 04:23:31,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:23:31,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:23:31,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-28 04:23:31,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817073170731707 [2024-06-28 04:23:31,132 INFO L175 Difference]: Start difference. First operand has 147 places, 182 transitions, 1893 flow. Second operand 8 states and 158 transitions. [2024-06-28 04:23:31,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 212 transitions, 2369 flow [2024-06-28 04:23:31,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 212 transitions, 2322 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-28 04:23:31,187 INFO L231 Difference]: Finished difference. Result has 154 places, 187 transitions, 2042 flow [2024-06-28 04:23:31,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1846, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2042, PETRI_PLACES=154, PETRI_TRANSITIONS=187} [2024-06-28 04:23:31,187 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 112 predicate places. [2024-06-28 04:23:31,187 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 187 transitions, 2042 flow [2024-06-28 04:23:31,187 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 04:23:31,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:31,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:31,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 04:23:31,188 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:31,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:31,188 INFO L85 PathProgramCache]: Analyzing trace with hash 912820915, now seen corresponding path program 3 times [2024-06-28 04:23:31,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:31,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078072959] [2024-06-28 04:23:31,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:31,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:32,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:32,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:32,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078072959] [2024-06-28 04:23:32,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078072959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:32,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:32,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:23:32,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249258295] [2024-06-28 04:23:32,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:32,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:23:32,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:32,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:23:32,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:23:32,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 04:23:32,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 187 transitions, 2042 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 04:23:32,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:32,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 04:23:32,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:33,135 INFO L124 PetriNetUnfolderBase]: 1781/2849 cut-off events. [2024-06-28 04:23:33,135 INFO L125 PetriNetUnfolderBase]: For 71034/71104 co-relation queries the response was YES. [2024-06-28 04:23:33,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18621 conditions, 2849 events. 1781/2849 cut-off events. For 71034/71104 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 15484 event pairs, 363 based on Foata normal form. 10/2806 useless extension candidates. Maximal degree in co-relation 18547. Up to 2479 conditions per place. [2024-06-28 04:23:33,160 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 131 selfloop transitions, 47 changer transitions 0/217 dead transitions. [2024-06-28 04:23:33,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 217 transitions, 2514 flow [2024-06-28 04:23:33,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:23:33,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:23:33,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-28 04:23:33,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4847560975609756 [2024-06-28 04:23:33,161 INFO L175 Difference]: Start difference. First operand has 154 places, 187 transitions, 2042 flow. Second operand 8 states and 159 transitions. [2024-06-28 04:23:33,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 217 transitions, 2514 flow [2024-06-28 04:23:33,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 217 transitions, 2401 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 04:23:33,233 INFO L231 Difference]: Finished difference. Result has 157 places, 189 transitions, 2066 flow [2024-06-28 04:23:33,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2066, PETRI_PLACES=157, PETRI_TRANSITIONS=189} [2024-06-28 04:23:33,234 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 115 predicate places. [2024-06-28 04:23:33,234 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 189 transitions, 2066 flow [2024-06-28 04:23:33,234 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 04:23:33,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:33,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:33,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 04:23:33,234 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:33,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:33,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1200422419, now seen corresponding path program 1 times [2024-06-28 04:23:33,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:33,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043803363] [2024-06-28 04:23:33,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:33,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:34,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:34,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:34,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043803363] [2024-06-28 04:23:34,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043803363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:34,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:34,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:34,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529706491] [2024-06-28 04:23:34,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:34,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:34,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:34,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:34,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:34,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:23:34,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 189 transitions, 2066 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 04:23:34,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:34,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:23:34,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:35,250 INFO L124 PetriNetUnfolderBase]: 1912/3010 cut-off events. [2024-06-28 04:23:35,251 INFO L125 PetriNetUnfolderBase]: For 72420/72420 co-relation queries the response was YES. [2024-06-28 04:23:35,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19817 conditions, 3010 events. 1912/3010 cut-off events. For 72420/72420 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 15973 event pairs, 394 based on Foata normal form. 2/3009 useless extension candidates. Maximal degree in co-relation 19743. Up to 2795 conditions per place. [2024-06-28 04:23:35,274 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 187 selfloop transitions, 36 changer transitions 0/228 dead transitions. [2024-06-28 04:23:35,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 228 transitions, 2696 flow [2024-06-28 04:23:35,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:23:35,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:23:35,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-28 04:23:35,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45365853658536587 [2024-06-28 04:23:35,276 INFO L175 Difference]: Start difference. First operand has 157 places, 189 transitions, 2066 flow. Second operand 10 states and 186 transitions. [2024-06-28 04:23:35,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 228 transitions, 2696 flow [2024-06-28 04:23:35,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 228 transitions, 2581 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 04:23:35,359 INFO L231 Difference]: Finished difference. Result has 161 places, 195 transitions, 2119 flow [2024-06-28 04:23:35,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1951, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2119, PETRI_PLACES=161, PETRI_TRANSITIONS=195} [2024-06-28 04:23:35,360 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 119 predicate places. [2024-06-28 04:23:35,360 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 195 transitions, 2119 flow [2024-06-28 04:23:35,360 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 04:23:35,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:35,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:35,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 04:23:35,360 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:35,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:35,361 INFO L85 PathProgramCache]: Analyzing trace with hash 912825875, now seen corresponding path program 2 times [2024-06-28 04:23:35,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:35,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408510706] [2024-06-28 04:23:35,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:35,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:36,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:36,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:36,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408510706] [2024-06-28 04:23:36,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408510706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:36,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:36,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:36,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952964394] [2024-06-28 04:23:36,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:36,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:36,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:36,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:36,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:36,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:23:36,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 195 transitions, 2119 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 04:23:36,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:36,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:23:36,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:37,256 INFO L124 PetriNetUnfolderBase]: 1923/3021 cut-off events. [2024-06-28 04:23:37,257 INFO L125 PetriNetUnfolderBase]: For 78500/78500 co-relation queries the response was YES. [2024-06-28 04:23:37,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20327 conditions, 3021 events. 1923/3021 cut-off events. For 78500/78500 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 16018 event pairs, 433 based on Foata normal form. 2/3020 useless extension candidates. Maximal degree in co-relation 20252. Up to 2797 conditions per place. [2024-06-28 04:23:37,280 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 180 selfloop transitions, 44 changer transitions 0/229 dead transitions. [2024-06-28 04:23:37,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 229 transitions, 2725 flow [2024-06-28 04:23:37,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:23:37,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:23:37,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 04:23:37,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45799457994579945 [2024-06-28 04:23:37,281 INFO L175 Difference]: Start difference. First operand has 161 places, 195 transitions, 2119 flow. Second operand 9 states and 169 transitions. [2024-06-28 04:23:37,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 229 transitions, 2725 flow [2024-06-28 04:23:37,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 229 transitions, 2605 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 04:23:37,356 INFO L231 Difference]: Finished difference. Result has 163 places, 198 transitions, 2164 flow [2024-06-28 04:23:37,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1999, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2164, PETRI_PLACES=163, PETRI_TRANSITIONS=198} [2024-06-28 04:23:37,356 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 121 predicate places. [2024-06-28 04:23:37,356 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 198 transitions, 2164 flow [2024-06-28 04:23:37,357 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 04:23:37,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:37,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:37,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 04:23:37,357 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:37,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:37,358 INFO L85 PathProgramCache]: Analyzing trace with hash 557015129, now seen corresponding path program 1 times [2024-06-28 04:23:37,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:37,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662187015] [2024-06-28 04:23:37,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:37,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:37,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:37,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:37,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662187015] [2024-06-28 04:23:37,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662187015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:37,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:37,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:23:37,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354790220] [2024-06-28 04:23:37,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:37,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:23:37,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:37,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:23:37,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:23:38,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:23:38,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 198 transitions, 2164 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 04:23:38,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:38,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:23:38,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:38,816 INFO L124 PetriNetUnfolderBase]: 1953/3077 cut-off events. [2024-06-28 04:23:38,816 INFO L125 PetriNetUnfolderBase]: For 85536/85536 co-relation queries the response was YES. [2024-06-28 04:23:38,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21030 conditions, 3077 events. 1953/3077 cut-off events. For 85536/85536 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 16386 event pairs, 414 based on Foata normal form. 4/3078 useless extension candidates. Maximal degree in co-relation 20954. Up to 2813 conditions per place. [2024-06-28 04:23:38,840 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 174 selfloop transitions, 50 changer transitions 0/229 dead transitions. [2024-06-28 04:23:38,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 229 transitions, 2892 flow [2024-06-28 04:23:38,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:23:38,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:23:38,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-28 04:23:38,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4738675958188153 [2024-06-28 04:23:38,841 INFO L175 Difference]: Start difference. First operand has 163 places, 198 transitions, 2164 flow. Second operand 7 states and 136 transitions. [2024-06-28 04:23:38,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 229 transitions, 2892 flow [2024-06-28 04:23:38,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 229 transitions, 2764 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 04:23:38,913 INFO L231 Difference]: Finished difference. Result has 165 places, 209 transitions, 2301 flow [2024-06-28 04:23:38,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2036, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2301, PETRI_PLACES=165, PETRI_TRANSITIONS=209} [2024-06-28 04:23:38,913 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 123 predicate places. [2024-06-28 04:23:38,914 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 209 transitions, 2301 flow [2024-06-28 04:23:38,914 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 04:23:38,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:38,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:38,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 04:23:38,914 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:38,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:38,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1376720205, now seen corresponding path program 4 times [2024-06-28 04:23:38,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:38,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920244486] [2024-06-28 04:23:38,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:38,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:39,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:39,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:39,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920244486] [2024-06-28 04:23:39,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920244486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:39,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:39,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:23:39,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263116853] [2024-06-28 04:23:39,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:39,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:23:39,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:39,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:23:39,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:23:39,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 04:23:39,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 209 transitions, 2301 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 04:23:39,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:39,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 04:23:39,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:40,445 INFO L124 PetriNetUnfolderBase]: 1854/2957 cut-off events. [2024-06-28 04:23:40,445 INFO L125 PetriNetUnfolderBase]: For 95766/95841 co-relation queries the response was YES. [2024-06-28 04:23:40,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20736 conditions, 2957 events. 1854/2957 cut-off events. For 95766/95841 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 16161 event pairs, 410 based on Foata normal form. 10/2917 useless extension candidates. Maximal degree in co-relation 20658. Up to 2597 conditions per place. [2024-06-28 04:23:40,469 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 151 selfloop transitions, 45 changer transitions 0/238 dead transitions. [2024-06-28 04:23:40,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 238 transitions, 2829 flow [2024-06-28 04:23:40,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:23:40,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:23:40,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-28 04:23:40,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2024-06-28 04:23:40,470 INFO L175 Difference]: Start difference. First operand has 165 places, 209 transitions, 2301 flow. Second operand 8 states and 156 transitions. [2024-06-28 04:23:40,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 238 transitions, 2829 flow [2024-06-28 04:23:40,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 238 transitions, 2778 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-28 04:23:40,547 INFO L231 Difference]: Finished difference. Result has 172 places, 214 transitions, 2423 flow [2024-06-28 04:23:40,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2250, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2423, PETRI_PLACES=172, PETRI_TRANSITIONS=214} [2024-06-28 04:23:40,548 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 130 predicate places. [2024-06-28 04:23:40,548 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 214 transitions, 2423 flow [2024-06-28 04:23:40,548 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 04:23:40,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:40,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:40,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 04:23:40,549 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:40,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:40,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1166255739, now seen corresponding path program 3 times [2024-06-28 04:23:40,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:40,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669016579] [2024-06-28 04:23:40,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:40,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:40,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:41,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:41,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:41,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669016579] [2024-06-28 04:23:41,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669016579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:41,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:41,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:41,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211219451] [2024-06-28 04:23:41,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:41,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:41,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:41,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:41,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:41,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:23:41,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 214 transitions, 2423 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 04:23:41,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:41,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:23:41,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:42,399 INFO L124 PetriNetUnfolderBase]: 1989/3119 cut-off events. [2024-06-28 04:23:42,399 INFO L125 PetriNetUnfolderBase]: For 98973/98973 co-relation queries the response was YES. [2024-06-28 04:23:42,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22301 conditions, 3119 events. 1989/3119 cut-off events. For 98973/98973 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 16685 event pairs, 473 based on Foata normal form. 2/3102 useless extension candidates. Maximal degree in co-relation 22220. Up to 2653 conditions per place. [2024-06-28 04:23:42,431 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 147 selfloop transitions, 98 changer transitions 0/250 dead transitions. [2024-06-28 04:23:42,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 250 transitions, 3270 flow [2024-06-28 04:23:42,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:23:42,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:23:42,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-28 04:23:42,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46883468834688347 [2024-06-28 04:23:42,432 INFO L175 Difference]: Start difference. First operand has 172 places, 214 transitions, 2423 flow. Second operand 9 states and 173 transitions. [2024-06-28 04:23:42,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 250 transitions, 3270 flow [2024-06-28 04:23:42,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 250 transitions, 3146 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 04:23:42,524 INFO L231 Difference]: Finished difference. Result has 176 places, 222 transitions, 2666 flow [2024-06-28 04:23:42,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2299, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2666, PETRI_PLACES=176, PETRI_TRANSITIONS=222} [2024-06-28 04:23:42,525 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 134 predicate places. [2024-06-28 04:23:42,525 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 222 transitions, 2666 flow [2024-06-28 04:23:42,525 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 04:23:42,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:42,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:42,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 04:23:42,525 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:42,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:42,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1370049005, now seen corresponding path program 4 times [2024-06-28 04:23:42,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:42,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204138511] [2024-06-28 04:23:42,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:42,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:43,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:43,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:43,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204138511] [2024-06-28 04:23:43,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204138511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:43,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:43,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:43,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012631142] [2024-06-28 04:23:43,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:43,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:43,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:43,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:43,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:43,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:23:43,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 222 transitions, 2666 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 04:23:43,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:43,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:23:43,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:44,278 INFO L124 PetriNetUnfolderBase]: 2000/3140 cut-off events. [2024-06-28 04:23:44,278 INFO L125 PetriNetUnfolderBase]: For 106617/106617 co-relation queries the response was YES. [2024-06-28 04:23:44,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23063 conditions, 3140 events. 2000/3140 cut-off events. For 106617/106617 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 16886 event pairs, 468 based on Foata normal form. 2/3123 useless extension candidates. Maximal degree in co-relation 22981. Up to 2767 conditions per place. [2024-06-28 04:23:44,305 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 173 selfloop transitions, 73 changer transitions 0/251 dead transitions. [2024-06-28 04:23:44,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 251 transitions, 3312 flow [2024-06-28 04:23:44,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:23:44,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:23:44,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-28 04:23:44,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46612466124661245 [2024-06-28 04:23:44,306 INFO L175 Difference]: Start difference. First operand has 176 places, 222 transitions, 2666 flow. Second operand 9 states and 172 transitions. [2024-06-28 04:23:44,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 251 transitions, 3312 flow [2024-06-28 04:23:44,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 251 transitions, 3109 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-28 04:23:44,409 INFO L231 Difference]: Finished difference. Result has 180 places, 225 transitions, 2699 flow [2024-06-28 04:23:44,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2473, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2699, PETRI_PLACES=180, PETRI_TRANSITIONS=225} [2024-06-28 04:23:44,409 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 138 predicate places. [2024-06-28 04:23:44,409 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 225 transitions, 2699 flow [2024-06-28 04:23:44,410 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 04:23:44,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:44,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:44,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 04:23:44,410 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:44,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:44,410 INFO L85 PathProgramCache]: Analyzing trace with hash -2008467787, now seen corresponding path program 5 times [2024-06-28 04:23:44,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:44,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665390521] [2024-06-28 04:23:44,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:44,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:45,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:45,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:45,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665390521] [2024-06-28 04:23:45,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665390521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:45,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:45,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:45,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284182048] [2024-06-28 04:23:45,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:45,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:45,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:45,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:45,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:45,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:23:45,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 225 transitions, 2699 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 04:23:45,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:45,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:23:45,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:46,348 INFO L124 PetriNetUnfolderBase]: 1995/3133 cut-off events. [2024-06-28 04:23:46,348 INFO L125 PetriNetUnfolderBase]: For 109202/109202 co-relation queries the response was YES. [2024-06-28 04:23:46,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22994 conditions, 3133 events. 1995/3133 cut-off events. For 109202/109202 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 16854 event pairs, 468 based on Foata normal form. 2/3116 useless extension candidates. Maximal degree in co-relation 22911. Up to 2760 conditions per place. [2024-06-28 04:23:46,375 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 169 selfloop transitions, 77 changer transitions 0/251 dead transitions. [2024-06-28 04:23:46,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 251 transitions, 3269 flow [2024-06-28 04:23:46,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:23:46,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:23:46,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-28 04:23:46,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-28 04:23:46,376 INFO L175 Difference]: Start difference. First operand has 180 places, 225 transitions, 2699 flow. Second operand 9 states and 171 transitions. [2024-06-28 04:23:46,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 251 transitions, 3269 flow [2024-06-28 04:23:46,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 251 transitions, 3057 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-28 04:23:46,493 INFO L231 Difference]: Finished difference. Result has 182 places, 225 transitions, 2649 flow [2024-06-28 04:23:46,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2487, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2649, PETRI_PLACES=182, PETRI_TRANSITIONS=225} [2024-06-28 04:23:46,493 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 140 predicate places. [2024-06-28 04:23:46,493 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 225 transitions, 2649 flow [2024-06-28 04:23:46,494 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 04:23:46,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:46,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:46,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 04:23:46,494 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:46,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:46,494 INFO L85 PathProgramCache]: Analyzing trace with hash 837321783, now seen corresponding path program 2 times [2024-06-28 04:23:46,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:46,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167163337] [2024-06-28 04:23:46,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:46,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:47,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:47,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:47,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167163337] [2024-06-28 04:23:47,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167163337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:47,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:47,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:23:47,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751188427] [2024-06-28 04:23:47,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:47,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:23:47,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:47,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:23:47,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:23:47,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:23:47,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 225 transitions, 2649 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 04:23:47,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:47,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:23:47,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:47,816 INFO L124 PetriNetUnfolderBase]: 2015/3183 cut-off events. [2024-06-28 04:23:47,816 INFO L125 PetriNetUnfolderBase]: For 113350/113350 co-relation queries the response was YES. [2024-06-28 04:23:47,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23262 conditions, 3183 events. 2015/3183 cut-off events. For 113350/113350 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 17146 event pairs, 423 based on Foata normal form. 4/3184 useless extension candidates. Maximal degree in co-relation 23178. Up to 2893 conditions per place. [2024-06-28 04:23:47,845 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 191 selfloop transitions, 50 changer transitions 0/246 dead transitions. [2024-06-28 04:23:47,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 246 transitions, 3325 flow [2024-06-28 04:23:47,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:23:47,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:23:47,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-28 04:23:47,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.491869918699187 [2024-06-28 04:23:47,846 INFO L175 Difference]: Start difference. First operand has 182 places, 225 transitions, 2649 flow. Second operand 6 states and 121 transitions. [2024-06-28 04:23:47,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 246 transitions, 3325 flow [2024-06-28 04:23:47,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 246 transitions, 3089 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 04:23:47,970 INFO L231 Difference]: Finished difference. Result has 180 places, 228 transitions, 2571 flow [2024-06-28 04:23:47,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2413, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2571, PETRI_PLACES=180, PETRI_TRANSITIONS=228} [2024-06-28 04:23:47,970 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 138 predicate places. [2024-06-28 04:23:47,971 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 228 transitions, 2571 flow [2024-06-28 04:23:47,971 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 04:23:47,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:47,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:47,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 04:23:47,971 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:47,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:47,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1541399669, now seen corresponding path program 3 times [2024-06-28 04:23:47,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:47,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248398695] [2024-06-28 04:23:47,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:47,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:48,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:48,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:48,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248398695] [2024-06-28 04:23:48,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248398695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:48,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:48,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:23:48,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331451362] [2024-06-28 04:23:48,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:48,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:23:48,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:48,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:23:48,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:23:48,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:23:48,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 228 transitions, 2571 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 04:23:48,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:48,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:23:48,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:49,287 INFO L124 PetriNetUnfolderBase]: 2003/3167 cut-off events. [2024-06-28 04:23:49,287 INFO L125 PetriNetUnfolderBase]: For 116469/116469 co-relation queries the response was YES. [2024-06-28 04:23:49,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22953 conditions, 3167 events. 2003/3167 cut-off events. For 116469/116469 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 17023 event pairs, 457 based on Foata normal form. 4/3168 useless extension candidates. Maximal degree in co-relation 22868. Up to 2921 conditions per place. [2024-06-28 04:23:49,317 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 193 selfloop transitions, 44 changer transitions 0/242 dead transitions. [2024-06-28 04:23:49,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 242 transitions, 3103 flow [2024-06-28 04:23:49,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:23:49,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:23:49,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-06-28 04:23:49,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5073170731707317 [2024-06-28 04:23:49,318 INFO L175 Difference]: Start difference. First operand has 180 places, 228 transitions, 2571 flow. Second operand 5 states and 104 transitions. [2024-06-28 04:23:49,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 242 transitions, 3103 flow [2024-06-28 04:23:49,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 242 transitions, 2991 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-28 04:23:49,450 INFO L231 Difference]: Finished difference. Result has 181 places, 228 transitions, 2586 flow [2024-06-28 04:23:49,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2459, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2586, PETRI_PLACES=181, PETRI_TRANSITIONS=228} [2024-06-28 04:23:49,450 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 139 predicate places. [2024-06-28 04:23:49,450 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 228 transitions, 2586 flow [2024-06-28 04:23:49,450 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 04:23:49,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:49,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:49,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 04:23:49,451 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:49,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:49,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1631657225, now seen corresponding path program 5 times [2024-06-28 04:23:49,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:49,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545292304] [2024-06-28 04:23:49,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:49,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:50,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:50,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:50,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545292304] [2024-06-28 04:23:50,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545292304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:50,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:50,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:23:50,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723807615] [2024-06-28 04:23:50,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:50,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:23:50,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:50,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:23:50,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:23:50,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 04:23:50,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 228 transitions, 2586 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 04:23:50,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:50,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 04:23:50,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:50,955 INFO L124 PetriNetUnfolderBase]: 1956/3139 cut-off events. [2024-06-28 04:23:50,955 INFO L125 PetriNetUnfolderBase]: For 124661/124785 co-relation queries the response was YES. [2024-06-28 04:23:50,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22774 conditions, 3139 events. 1956/3139 cut-off events. For 124661/124785 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 17451 event pairs, 407 based on Foata normal form. 29/3107 useless extension candidates. Maximal degree in co-relation 22689. Up to 2711 conditions per place. [2024-06-28 04:23:50,984 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 171 selfloop transitions, 63 changer transitions 0/280 dead transitions. [2024-06-28 04:23:50,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 280 transitions, 3422 flow [2024-06-28 04:23:50,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:23:50,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:23:50,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-28 04:23:50,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48509485094850946 [2024-06-28 04:23:50,986 INFO L175 Difference]: Start difference. First operand has 181 places, 228 transitions, 2586 flow. Second operand 9 states and 179 transitions. [2024-06-28 04:23:50,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 280 transitions, 3422 flow [2024-06-28 04:23:51,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 280 transitions, 3312 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 04:23:51,121 INFO L231 Difference]: Finished difference. Result has 188 places, 248 transitions, 2933 flow [2024-06-28 04:23:51,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2498, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2933, PETRI_PLACES=188, PETRI_TRANSITIONS=248} [2024-06-28 04:23:51,121 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 146 predicate places. [2024-06-28 04:23:51,121 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 248 transitions, 2933 flow [2024-06-28 04:23:51,122 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 04:23:51,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:51,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:51,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 04:23:51,122 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:51,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:51,123 INFO L85 PathProgramCache]: Analyzing trace with hash -838136713, now seen corresponding path program 6 times [2024-06-28 04:23:51,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:51,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997671726] [2024-06-28 04:23:51,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:51,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:51,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:51,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:51,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997671726] [2024-06-28 04:23:51,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997671726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:51,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:51,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:23:51,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440539814] [2024-06-28 04:23:51,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:51,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:23:51,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:51,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:23:51,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:23:51,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 04:23:51,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 248 transitions, 2933 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 04:23:51,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:51,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 04:23:51,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:52,724 INFO L124 PetriNetUnfolderBase]: 2049/3297 cut-off events. [2024-06-28 04:23:52,724 INFO L125 PetriNetUnfolderBase]: For 135277/135504 co-relation queries the response was YES. [2024-06-28 04:23:52,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24222 conditions, 3297 events. 2049/3297 cut-off events. For 135277/135504 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 18665 event pairs, 430 based on Foata normal form. 61/3287 useless extension candidates. Maximal degree in co-relation 24134. Up to 2826 conditions per place. [2024-06-28 04:23:52,755 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 179 selfloop transitions, 75 changer transitions 0/300 dead transitions. [2024-06-28 04:23:52,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 300 transitions, 3797 flow [2024-06-28 04:23:52,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:23:52,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:23:52,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-28 04:23:52,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48509485094850946 [2024-06-28 04:23:52,757 INFO L175 Difference]: Start difference. First operand has 188 places, 248 transitions, 2933 flow. Second operand 9 states and 179 transitions. [2024-06-28 04:23:52,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 300 transitions, 3797 flow [2024-06-28 04:23:52,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 300 transitions, 3676 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-28 04:23:52,924 INFO L231 Difference]: Finished difference. Result has 196 places, 267 transitions, 3302 flow [2024-06-28 04:23:52,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2848, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3302, PETRI_PLACES=196, PETRI_TRANSITIONS=267} [2024-06-28 04:23:52,925 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 154 predicate places. [2024-06-28 04:23:52,925 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 267 transitions, 3302 flow [2024-06-28 04:23:52,925 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 04:23:52,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:52,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:52,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 04:23:52,925 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:52,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:52,926 INFO L85 PathProgramCache]: Analyzing trace with hash -279087877, now seen corresponding path program 7 times [2024-06-28 04:23:52,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:52,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866367393] [2024-06-28 04:23:52,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:52,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:52,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:53,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:53,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:53,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866367393] [2024-06-28 04:23:53,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866367393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:53,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:53,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:23:53,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452387073] [2024-06-28 04:23:53,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:53,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:23:53,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:53,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:23:53,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:23:53,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 04:23:53,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 267 transitions, 3302 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 04:23:53,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:53,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 04:23:53,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:54,624 INFO L124 PetriNetUnfolderBase]: 2102/3400 cut-off events. [2024-06-28 04:23:54,624 INFO L125 PetriNetUnfolderBase]: For 143356/143691 co-relation queries the response was YES. [2024-06-28 04:23:54,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25082 conditions, 3400 events. 2102/3400 cut-off events. For 143356/143691 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 19502 event pairs, 381 based on Foata normal form. 118/3437 useless extension candidates. Maximal degree in co-relation 24991. Up to 2791 conditions per place. [2024-06-28 04:23:54,657 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 179 selfloop transitions, 90 changer transitions 0/315 dead transitions. [2024-06-28 04:23:54,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 315 transitions, 4145 flow [2024-06-28 04:23:54,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:23:54,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:23:54,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-28 04:23:54,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823848238482385 [2024-06-28 04:23:54,658 INFO L175 Difference]: Start difference. First operand has 196 places, 267 transitions, 3302 flow. Second operand 9 states and 178 transitions. [2024-06-28 04:23:54,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 315 transitions, 4145 flow [2024-06-28 04:23:54,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 315 transitions, 3957 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-28 04:23:54,814 INFO L231 Difference]: Finished difference. Result has 201 places, 282 transitions, 3555 flow [2024-06-28 04:23:54,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3147, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3555, PETRI_PLACES=201, PETRI_TRANSITIONS=282} [2024-06-28 04:23:54,815 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 159 predicate places. [2024-06-28 04:23:54,815 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 282 transitions, 3555 flow [2024-06-28 04:23:54,815 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 04:23:54,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:54,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:54,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 04:23:54,815 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:54,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:54,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1751464301, now seen corresponding path program 1 times [2024-06-28 04:23:54,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:54,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439809713] [2024-06-28 04:23:54,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:54,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:55,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:55,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:55,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439809713] [2024-06-28 04:23:55,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439809713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:55,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:55,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:23:55,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871465361] [2024-06-28 04:23:55,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:55,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:23:55,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:55,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:23:55,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:23:55,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 04:23:55,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 282 transitions, 3555 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:55,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:55,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 04:23:55,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:56,116 INFO L124 PetriNetUnfolderBase]: 2256/3633 cut-off events. [2024-06-28 04:23:56,116 INFO L125 PetriNetUnfolderBase]: For 140906/140906 co-relation queries the response was YES. [2024-06-28 04:23:56,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27069 conditions, 3633 events. 2256/3633 cut-off events. For 140906/140906 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 20977 event pairs, 655 based on Foata normal form. 3/3630 useless extension candidates. Maximal degree in co-relation 26976. Up to 3268 conditions per place. [2024-06-28 04:23:56,152 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 234 selfloop transitions, 26 changer transitions 0/307 dead transitions. [2024-06-28 04:23:56,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 307 transitions, 4279 flow [2024-06-28 04:23:56,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:23:56,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:23:56,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-28 04:23:56,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4808362369337979 [2024-06-28 04:23:56,154 INFO L175 Difference]: Start difference. First operand has 201 places, 282 transitions, 3555 flow. Second operand 7 states and 138 transitions. [2024-06-28 04:23:56,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 307 transitions, 4279 flow [2024-06-28 04:23:56,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 307 transitions, 4073 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 04:23:56,369 INFO L231 Difference]: Finished difference. Result has 201 places, 288 transitions, 3473 flow [2024-06-28 04:23:56,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3349, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3473, PETRI_PLACES=201, PETRI_TRANSITIONS=288} [2024-06-28 04:23:56,369 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 159 predicate places. [2024-06-28 04:23:56,370 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 288 transitions, 3473 flow [2024-06-28 04:23:56,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:56,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:56,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:56,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 04:23:56,370 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:56,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:56,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1033090751, now seen corresponding path program 2 times [2024-06-28 04:23:56,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:56,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596618095] [2024-06-28 04:23:56,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:56,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:57,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:57,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:57,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596618095] [2024-06-28 04:23:57,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596618095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:57,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:57,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:23:57,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996396337] [2024-06-28 04:23:57,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:57,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:23:57,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:57,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:23:57,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:23:57,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 04:23:57,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 288 transitions, 3473 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:57,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:57,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 04:23:57,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:57,842 INFO L124 PetriNetUnfolderBase]: 2285/3678 cut-off events. [2024-06-28 04:23:57,842 INFO L125 PetriNetUnfolderBase]: For 146818/146818 co-relation queries the response was YES. [2024-06-28 04:23:57,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27343 conditions, 3678 events. 2285/3678 cut-off events. For 146818/146818 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 21324 event pairs, 652 based on Foata normal form. 3/3675 useless extension candidates. Maximal degree in co-relation 27250. Up to 3320 conditions per place. [2024-06-28 04:23:57,874 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 238 selfloop transitions, 26 changer transitions 0/311 dead transitions. [2024-06-28 04:23:57,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 311 transitions, 4137 flow [2024-06-28 04:23:57,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:23:57,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:23:57,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-28 04:23:57,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-28 04:23:57,875 INFO L175 Difference]: Start difference. First operand has 201 places, 288 transitions, 3473 flow. Second operand 7 states and 133 transitions. [2024-06-28 04:23:57,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 311 transitions, 4137 flow [2024-06-28 04:23:58,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 311 transitions, 4083 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 04:23:58,063 INFO L231 Difference]: Finished difference. Result has 205 places, 296 transitions, 3566 flow [2024-06-28 04:23:58,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3426, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3566, PETRI_PLACES=205, PETRI_TRANSITIONS=296} [2024-06-28 04:23:58,063 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 163 predicate places. [2024-06-28 04:23:58,063 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 296 transitions, 3566 flow [2024-06-28 04:23:58,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:58,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:58,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:58,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 04:23:58,064 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:58,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:58,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1316882269, now seen corresponding path program 3 times [2024-06-28 04:23:58,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:58,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116013024] [2024-06-28 04:23:58,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:58,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:58,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:58,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:58,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:58,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116013024] [2024-06-28 04:23:58,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116013024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:58,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:58,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:23:58,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566389165] [2024-06-28 04:23:58,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:58,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:23:58,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:58,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:23:58,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:23:58,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 04:23:58,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 296 transitions, 3566 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:58,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:58,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 04:23:58,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:59,492 INFO L124 PetriNetUnfolderBase]: 2277/3664 cut-off events. [2024-06-28 04:23:59,492 INFO L125 PetriNetUnfolderBase]: For 148140/148140 co-relation queries the response was YES. [2024-06-28 04:23:59,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27344 conditions, 3664 events. 2277/3664 cut-off events. For 148140/148140 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 21115 event pairs, 652 based on Foata normal form. 3/3664 useless extension candidates. Maximal degree in co-relation 27249. Up to 3323 conditions per place. [2024-06-28 04:23:59,528 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 240 selfloop transitions, 20 changer transitions 0/307 dead transitions. [2024-06-28 04:23:59,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 307 transitions, 4122 flow [2024-06-28 04:23:59,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:23:59,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:23:59,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 04:23:59,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42378048780487804 [2024-06-28 04:23:59,530 INFO L175 Difference]: Start difference. First operand has 205 places, 296 transitions, 3566 flow. Second operand 8 states and 139 transitions. [2024-06-28 04:23:59,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 307 transitions, 4122 flow [2024-06-28 04:23:59,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 307 transitions, 4035 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 04:23:59,750 INFO L231 Difference]: Finished difference. Result has 209 places, 296 transitions, 3526 flow [2024-06-28 04:23:59,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3479, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3526, PETRI_PLACES=209, PETRI_TRANSITIONS=296} [2024-06-28 04:23:59,751 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 167 predicate places. [2024-06-28 04:23:59,751 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 296 transitions, 3526 flow [2024-06-28 04:23:59,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:59,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:59,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:59,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 04:23:59,751 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:59,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:59,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1210468535, now seen corresponding path program 1 times [2024-06-28 04:23:59,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:59,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569304993] [2024-06-28 04:23:59,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:59,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:00,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:24:00,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:00,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569304993] [2024-06-28 04:24:00,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569304993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:00,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:00,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:24:00,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234047024] [2024-06-28 04:24:00,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:00,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:24:00,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:00,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:24:00,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:24:00,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:24:00,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 296 transitions, 3526 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:00,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:00,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:24:00,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:01,335 INFO L124 PetriNetUnfolderBase]: 2391/3780 cut-off events. [2024-06-28 04:24:01,335 INFO L125 PetriNetUnfolderBase]: For 150933/150933 co-relation queries the response was YES. [2024-06-28 04:24:01,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28064 conditions, 3780 events. 2391/3780 cut-off events. For 150933/150933 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 21321 event pairs, 680 based on Foata normal form. 2/3779 useless extension candidates. Maximal degree in co-relation 27968. Up to 3612 conditions per place. [2024-06-28 04:24:01,376 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 287 selfloop transitions, 14 changer transitions 0/306 dead transitions. [2024-06-28 04:24:01,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 306 transitions, 4178 flow [2024-06-28 04:24:01,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:24:01,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:24:01,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-06-28 04:24:01,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4585365853658537 [2024-06-28 04:24:01,377 INFO L175 Difference]: Start difference. First operand has 209 places, 296 transitions, 3526 flow. Second operand 5 states and 94 transitions. [2024-06-28 04:24:01,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 306 transitions, 4178 flow [2024-06-28 04:24:01,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 306 transitions, 4065 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 04:24:01,661 INFO L231 Difference]: Finished difference. Result has 205 places, 298 transitions, 3474 flow [2024-06-28 04:24:01,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3413, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3474, PETRI_PLACES=205, PETRI_TRANSITIONS=298} [2024-06-28 04:24:01,662 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 163 predicate places. [2024-06-28 04:24:01,662 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 298 transitions, 3474 flow [2024-06-28 04:24:01,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:01,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:01,663 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 04:24:01,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 04:24:01,663 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:01,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:01,664 INFO L85 PathProgramCache]: Analyzing trace with hash -2020739340, now seen corresponding path program 1 times [2024-06-28 04:24:01,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:01,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748549774] [2024-06-28 04:24:01,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:01,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:02,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:24:02,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:02,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748549774] [2024-06-28 04:24:02,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748549774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:02,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:02,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:24:02,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263534221] [2024-06-28 04:24:02,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:02,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:24:02,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:02,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:24:02,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:24:02,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:24:02,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 298 transitions, 3474 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 04:24:02,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:02,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:24:02,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:03,564 INFO L124 PetriNetUnfolderBase]: 2408/3799 cut-off events. [2024-06-28 04:24:03,565 INFO L125 PetriNetUnfolderBase]: For 158160/158160 co-relation queries the response was YES. [2024-06-28 04:24:03,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28291 conditions, 3799 events. 2408/3799 cut-off events. For 158160/158160 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 21317 event pairs, 540 based on Foata normal form. 4/3800 useless extension candidates. Maximal degree in co-relation 28198. Up to 3425 conditions per place. [2024-06-28 04:24:03,602 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 273 selfloop transitions, 56 changer transitions 0/334 dead transitions. [2024-06-28 04:24:03,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 334 transitions, 4345 flow [2024-06-28 04:24:03,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:24:03,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:24:03,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-28 04:24:03,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-28 04:24:03,603 INFO L175 Difference]: Start difference. First operand has 205 places, 298 transitions, 3474 flow. Second operand 9 states and 171 transitions. [2024-06-28 04:24:03,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 334 transitions, 4345 flow [2024-06-28 04:24:03,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 334 transitions, 4300 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 04:24:03,812 INFO L231 Difference]: Finished difference. Result has 212 places, 304 transitions, 3664 flow [2024-06-28 04:24:03,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3429, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3664, PETRI_PLACES=212, PETRI_TRANSITIONS=304} [2024-06-28 04:24:03,813 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 170 predicate places. [2024-06-28 04:24:03,814 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 304 transitions, 3664 flow [2024-06-28 04:24:03,814 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 04:24:03,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:03,814 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 04:24:03,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 04:24:03,814 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:03,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:03,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1390165238, now seen corresponding path program 2 times [2024-06-28 04:24:03,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:03,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773418759] [2024-06-28 04:24:03,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:03,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:04,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:24:04,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:04,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773418759] [2024-06-28 04:24:04,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773418759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:04,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:04,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:24:04,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606977197] [2024-06-28 04:24:04,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:04,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:24:04,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:04,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:24:04,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:24:04,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:24:04,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 304 transitions, 3664 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 04:24:04,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:04,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:24:04,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:05,692 INFO L124 PetriNetUnfolderBase]: 2450/3876 cut-off events. [2024-06-28 04:24:05,692 INFO L125 PetriNetUnfolderBase]: For 170148/170148 co-relation queries the response was YES. [2024-06-28 04:24:05,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29488 conditions, 3876 events. 2450/3876 cut-off events. For 170148/170148 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 21954 event pairs, 578 based on Foata normal form. 4/3877 useless extension candidates. Maximal degree in co-relation 29393. Up to 3533 conditions per place. [2024-06-28 04:24:05,729 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 292 selfloop transitions, 46 changer transitions 0/343 dead transitions. [2024-06-28 04:24:05,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 343 transitions, 4710 flow [2024-06-28 04:24:05,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:24:05,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:24:05,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-28 04:24:05,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46883468834688347 [2024-06-28 04:24:05,731 INFO L175 Difference]: Start difference. First operand has 212 places, 304 transitions, 3664 flow. Second operand 9 states and 173 transitions. [2024-06-28 04:24:05,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 343 transitions, 4710 flow [2024-06-28 04:24:05,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 343 transitions, 4580 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-28 04:24:05,973 INFO L231 Difference]: Finished difference. Result has 218 places, 309 transitions, 3738 flow [2024-06-28 04:24:05,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3534, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3738, PETRI_PLACES=218, PETRI_TRANSITIONS=309} [2024-06-28 04:24:05,973 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 176 predicate places. [2024-06-28 04:24:05,973 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 309 transitions, 3738 flow [2024-06-28 04:24:05,973 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 04:24:05,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:05,974 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 04:24:05,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 04:24:05,974 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:05,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:05,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1928168686, now seen corresponding path program 3 times [2024-06-28 04:24:05,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:05,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304881387] [2024-06-28 04:24:05,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:05,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:06,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:24:06,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:06,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304881387] [2024-06-28 04:24:06,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304881387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:06,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:06,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:24:06,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240441107] [2024-06-28 04:24:06,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:06,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:24:06,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:06,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:24:06,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:24:07,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:24:07,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 309 transitions, 3738 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 04:24:07,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:07,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:24:07,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:07,946 INFO L124 PetriNetUnfolderBase]: 2442/3864 cut-off events. [2024-06-28 04:24:07,946 INFO L125 PetriNetUnfolderBase]: For 175225/175225 co-relation queries the response was YES. [2024-06-28 04:24:07,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29591 conditions, 3864 events. 2442/3864 cut-off events. For 175225/175225 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 21804 event pairs, 583 based on Foata normal form. 4/3865 useless extension candidates. Maximal degree in co-relation 29494. Up to 3573 conditions per place. [2024-06-28 04:24:07,984 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 291 selfloop transitions, 45 changer transitions 0/341 dead transitions. [2024-06-28 04:24:07,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 341 transitions, 4559 flow [2024-06-28 04:24:07,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:24:07,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:24:07,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 04:24:07,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45799457994579945 [2024-06-28 04:24:07,986 INFO L175 Difference]: Start difference. First operand has 218 places, 309 transitions, 3738 flow. Second operand 9 states and 169 transitions. [2024-06-28 04:24:07,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 341 transitions, 4559 flow [2024-06-28 04:24:08,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 341 transitions, 4397 flow, removed 54 selfloop flow, removed 5 redundant places. [2024-06-28 04:24:08,259 INFO L231 Difference]: Finished difference. Result has 222 places, 310 transitions, 3709 flow [2024-06-28 04:24:08,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3604, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3709, PETRI_PLACES=222, PETRI_TRANSITIONS=310} [2024-06-28 04:24:08,260 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 180 predicate places. [2024-06-28 04:24:08,260 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 310 transitions, 3709 flow [2024-06-28 04:24:08,260 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 04:24:08,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:08,260 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 04:24:08,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 04:24:08,261 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:08,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:08,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1855887770, now seen corresponding path program 4 times [2024-06-28 04:24:08,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:08,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244655756] [2024-06-28 04:24:08,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:08,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:09,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:24:09,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:09,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244655756] [2024-06-28 04:24:09,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244655756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:09,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:09,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:24:09,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872028460] [2024-06-28 04:24:09,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:09,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:24:09,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:09,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:24:09,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:24:09,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:24:09,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 310 transitions, 3709 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 04:24:09,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:09,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:24:09,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:10,001 INFO L124 PetriNetUnfolderBase]: 2459/3881 cut-off events. [2024-06-28 04:24:10,001 INFO L125 PetriNetUnfolderBase]: For 180309/180309 co-relation queries the response was YES. [2024-06-28 04:24:10,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29785 conditions, 3881 events. 2459/3881 cut-off events. For 180309/180309 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 21818 event pairs, 392 based on Foata normal form. 4/3882 useless extension candidates. Maximal degree in co-relation 29686. Up to 3273 conditions per place. [2024-06-28 04:24:10,045 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 307 selfloop transitions, 55 changer transitions 0/367 dead transitions. [2024-06-28 04:24:10,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 367 transitions, 4893 flow [2024-06-28 04:24:10,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:24:10,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:24:10,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 04:24:10,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45799457994579945 [2024-06-28 04:24:10,047 INFO L175 Difference]: Start difference. First operand has 222 places, 310 transitions, 3709 flow. Second operand 9 states and 169 transitions. [2024-06-28 04:24:10,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 367 transitions, 4893 flow [2024-06-28 04:24:10,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 367 transitions, 4807 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 04:24:10,474 INFO L231 Difference]: Finished difference. Result has 226 places, 334 transitions, 4172 flow [2024-06-28 04:24:10,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3623, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4172, PETRI_PLACES=226, PETRI_TRANSITIONS=334} [2024-06-28 04:24:10,475 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 184 predicate places. [2024-06-28 04:24:10,475 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 334 transitions, 4172 flow [2024-06-28 04:24:10,475 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 04:24:10,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:10,475 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 04:24:10,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 04:24:10,475 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:10,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:10,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1197269198, now seen corresponding path program 1 times [2024-06-28 04:24:10,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:10,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793783765] [2024-06-28 04:24:10,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:10,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:11,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:24:11,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:11,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793783765] [2024-06-28 04:24:11,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793783765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:11,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:11,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:24:11,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106791791] [2024-06-28 04:24:11,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:11,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:24:11,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:11,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:24:11,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:24:11,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:24:11,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 334 transitions, 4172 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 04:24:11,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:11,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:24:11,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:12,674 INFO L124 PetriNetUnfolderBase]: 2627/4185 cut-off events. [2024-06-28 04:24:12,674 INFO L125 PetriNetUnfolderBase]: For 216665/216665 co-relation queries the response was YES. [2024-06-28 04:24:12,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33142 conditions, 4185 events. 2627/4185 cut-off events. For 216665/216665 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 24186 event pairs, 550 based on Foata normal form. 12/4194 useless extension candidates. Maximal degree in co-relation 33040. Up to 3491 conditions per place. [2024-06-28 04:24:12,716 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 310 selfloop transitions, 69 changer transitions 0/384 dead transitions. [2024-06-28 04:24:12,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 384 transitions, 5417 flow [2024-06-28 04:24:12,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:24:12,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:24:12,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-06-28 04:24:12,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4700665188470067 [2024-06-28 04:24:12,717 INFO L175 Difference]: Start difference. First operand has 226 places, 334 transitions, 4172 flow. Second operand 11 states and 212 transitions. [2024-06-28 04:24:12,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 384 transitions, 5417 flow [2024-06-28 04:24:13,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 384 transitions, 5295 flow, removed 52 selfloop flow, removed 3 redundant places. [2024-06-28 04:24:13,169 INFO L231 Difference]: Finished difference. Result has 235 places, 337 transitions, 4294 flow [2024-06-28 04:24:13,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4050, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4294, PETRI_PLACES=235, PETRI_TRANSITIONS=337} [2024-06-28 04:24:13,170 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 193 predicate places. [2024-06-28 04:24:13,170 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 337 transitions, 4294 flow [2024-06-28 04:24:13,170 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 04:24:13,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:13,170 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 04:24:13,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 04:24:13,170 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:13,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:13,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1398351008, now seen corresponding path program 2 times [2024-06-28 04:24:13,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:13,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842011724] [2024-06-28 04:24:13,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:13,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:14,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:24:14,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:14,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842011724] [2024-06-28 04:24:14,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842011724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:14,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:14,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:24:14,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54486945] [2024-06-28 04:24:14,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:14,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:24:14,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:14,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:24:14,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:24:14,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:24:14,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 337 transitions, 4294 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 04:24:14,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:14,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:24:14,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:15,597 INFO L124 PetriNetUnfolderBase]: 2685/4272 cut-off events. [2024-06-28 04:24:15,597 INFO L125 PetriNetUnfolderBase]: For 222325/222325 co-relation queries the response was YES. [2024-06-28 04:24:15,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33130 conditions, 4272 events. 2685/4272 cut-off events. For 222325/222325 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 24704 event pairs, 590 based on Foata normal form. 16/4285 useless extension candidates. Maximal degree in co-relation 33025. Up to 3814 conditions per place. [2024-06-28 04:24:15,644 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 306 selfloop transitions, 63 changer transitions 0/374 dead transitions. [2024-06-28 04:24:15,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 374 transitions, 5243 flow [2024-06-28 04:24:15,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:24:15,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:24:15,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 04:24:15,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609756097560976 [2024-06-28 04:24:15,645 INFO L175 Difference]: Start difference. First operand has 235 places, 337 transitions, 4294 flow. Second operand 10 states and 189 transitions. [2024-06-28 04:24:15,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 374 transitions, 5243 flow [2024-06-28 04:24:16,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 374 transitions, 5115 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 04:24:16,142 INFO L231 Difference]: Finished difference. Result has 238 places, 338 transitions, 4338 flow [2024-06-28 04:24:16,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4174, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4338, PETRI_PLACES=238, PETRI_TRANSITIONS=338} [2024-06-28 04:24:16,143 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 196 predicate places. [2024-06-28 04:24:16,143 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 338 transitions, 4338 flow [2024-06-28 04:24:16,143 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 04:24:16,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:16,144 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 04:24:16,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 04:24:16,144 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:16,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:16,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1072792736, now seen corresponding path program 3 times [2024-06-28 04:24:16,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:16,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811595755] [2024-06-28 04:24:16,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:16,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:17,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:24:17,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:17,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811595755] [2024-06-28 04:24:17,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811595755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:17,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:17,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:24:17,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117086457] [2024-06-28 04:24:17,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:17,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:24:17,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:17,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:24:17,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:24:17,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:24:17,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 338 transitions, 4338 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 04:24:17,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:17,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:24:17,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:18,476 INFO L124 PetriNetUnfolderBase]: 2657/4239 cut-off events. [2024-06-28 04:24:18,476 INFO L125 PetriNetUnfolderBase]: For 211355/211355 co-relation queries the response was YES. [2024-06-28 04:24:18,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32206 conditions, 4239 events. 2657/4239 cut-off events. For 211355/211355 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 24623 event pairs, 597 based on Foata normal form. 16/4252 useless extension candidates. Maximal degree in co-relation 32099. Up to 3855 conditions per place. [2024-06-28 04:24:18,523 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 324 selfloop transitions, 47 changer transitions 0/376 dead transitions. [2024-06-28 04:24:18,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 376 transitions, 5260 flow [2024-06-28 04:24:18,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:24:18,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:24:18,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-28 04:24:18,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4585365853658537 [2024-06-28 04:24:18,524 INFO L175 Difference]: Start difference. First operand has 238 places, 338 transitions, 4338 flow. Second operand 10 states and 188 transitions. [2024-06-28 04:24:18,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 376 transitions, 5260 flow [2024-06-28 04:24:18,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 376 transitions, 5129 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 04:24:19,003 INFO L231 Difference]: Finished difference. Result has 240 places, 338 transitions, 4308 flow [2024-06-28 04:24:19,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4207, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4308, PETRI_PLACES=240, PETRI_TRANSITIONS=338} [2024-06-28 04:24:19,003 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 198 predicate places. [2024-06-28 04:24:19,003 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 338 transitions, 4308 flow [2024-06-28 04:24:19,004 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 04:24:19,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:19,004 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 04:24:19,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 04:24:19,004 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:19,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:19,004 INFO L85 PathProgramCache]: Analyzing trace with hash 271347302, now seen corresponding path program 5 times [2024-06-28 04:24:19,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:19,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025720185] [2024-06-28 04:24:19,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:19,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:19,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:19,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:24:19,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:19,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025720185] [2024-06-28 04:24:19,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025720185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:19,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:19,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:24:19,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032652162] [2024-06-28 04:24:19,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:19,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:24:19,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:19,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:24:19,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:24:19,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:24:19,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 338 transitions, 4308 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 04:24:19,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:19,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:24:19,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:20,846 INFO L124 PetriNetUnfolderBase]: 2649/4220 cut-off events. [2024-06-28 04:24:20,846 INFO L125 PetriNetUnfolderBase]: For 203679/203679 co-relation queries the response was YES. [2024-06-28 04:24:20,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31972 conditions, 4220 events. 2649/4220 cut-off events. For 203679/203679 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 24438 event pairs, 611 based on Foata normal form. 4/4216 useless extension candidates. Maximal degree in co-relation 31864. Up to 3832 conditions per place. [2024-06-28 04:24:20,892 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 316 selfloop transitions, 52 changer transitions 0/373 dead transitions. [2024-06-28 04:24:20,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 373 transitions, 5296 flow [2024-06-28 04:24:20,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:24:20,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:24:20,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 04:24:20,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46070460704607047 [2024-06-28 04:24:20,893 INFO L175 Difference]: Start difference. First operand has 240 places, 338 transitions, 4308 flow. Second operand 9 states and 170 transitions. [2024-06-28 04:24:20,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 373 transitions, 5296 flow [2024-06-28 04:24:21,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 373 transitions, 5199 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 04:24:21,276 INFO L231 Difference]: Finished difference. Result has 242 places, 345 transitions, 4486 flow [2024-06-28 04:24:21,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4211, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4486, PETRI_PLACES=242, PETRI_TRANSITIONS=345} [2024-06-28 04:24:21,276 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 200 predicate places. [2024-06-28 04:24:21,277 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 345 transitions, 4486 flow [2024-06-28 04:24:21,277 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 04:24:21,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:21,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:24:21,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 04:24:21,277 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:21,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:21,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1884530206, now seen corresponding path program 4 times [2024-06-28 04:24:21,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:21,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603956129] [2024-06-28 04:24:21,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:21,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:22,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:24:22,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:22,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603956129] [2024-06-28 04:24:22,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603956129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:22,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:22,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:24:22,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540103377] [2024-06-28 04:24:22,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:22,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:24:22,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:22,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:24:22,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:24:22,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:24:22,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 345 transitions, 4486 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 04:24:22,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:22,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:24:22,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:23,395 INFO L124 PetriNetUnfolderBase]: 2793/4470 cut-off events. [2024-06-28 04:24:23,395 INFO L125 PetriNetUnfolderBase]: For 240198/240198 co-relation queries the response was YES. [2024-06-28 04:24:23,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34756 conditions, 4470 events. 2793/4470 cut-off events. For 240198/240198 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 26370 event pairs, 644 based on Foata normal form. 12/4474 useless extension candidates. Maximal degree in co-relation 34646. Up to 3821 conditions per place. [2024-06-28 04:24:23,442 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 304 selfloop transitions, 79 changer transitions 0/388 dead transitions. [2024-06-28 04:24:23,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 388 transitions, 5744 flow [2024-06-28 04:24:23,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:24:23,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:24:23,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-28 04:24:23,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47317073170731705 [2024-06-28 04:24:23,443 INFO L175 Difference]: Start difference. First operand has 242 places, 345 transitions, 4486 flow. Second operand 10 states and 194 transitions. [2024-06-28 04:24:23,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 388 transitions, 5744 flow [2024-06-28 04:24:23,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 388 transitions, 5570 flow, removed 63 selfloop flow, removed 5 redundant places. [2024-06-28 04:24:23,947 INFO L231 Difference]: Finished difference. Result has 248 places, 349 transitions, 4592 flow [2024-06-28 04:24:23,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4312, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4592, PETRI_PLACES=248, PETRI_TRANSITIONS=349} [2024-06-28 04:24:23,947 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 206 predicate places. [2024-06-28 04:24:23,947 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 349 transitions, 4592 flow [2024-06-28 04:24:23,948 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 04:24:23,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:23,948 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 04:24:23,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 04:24:23,949 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:23,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:23,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1544847070, now seen corresponding path program 5 times [2024-06-28 04:24:23,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:23,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125958354] [2024-06-28 04:24:23,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:23,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:25,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:24:25,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:25,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125958354] [2024-06-28 04:24:25,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125958354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:25,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:25,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:24:25,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218247656] [2024-06-28 04:24:25,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:25,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:24:25,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:25,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:24:25,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:24:25,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:24:25,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 349 transitions, 4592 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 04:24:25,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:25,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:24:25,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:26,365 INFO L124 PetriNetUnfolderBase]: 2961/4756 cut-off events. [2024-06-28 04:24:26,365 INFO L125 PetriNetUnfolderBase]: For 271647/271647 co-relation queries the response was YES. [2024-06-28 04:24:26,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37624 conditions, 4756 events. 2961/4756 cut-off events. For 271647/271647 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 28576 event pairs, 664 based on Foata normal form. 12/4752 useless extension candidates. Maximal degree in co-relation 37512. Up to 4009 conditions per place. [2024-06-28 04:24:26,419 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 304 selfloop transitions, 82 changer transitions 0/391 dead transitions. [2024-06-28 04:24:26,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 391 transitions, 5857 flow [2024-06-28 04:24:26,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:24:26,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:24:26,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-28 04:24:26,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47317073170731705 [2024-06-28 04:24:26,420 INFO L175 Difference]: Start difference. First operand has 248 places, 349 transitions, 4592 flow. Second operand 10 states and 194 transitions. [2024-06-28 04:24:26,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 391 transitions, 5857 flow [2024-06-28 04:24:26,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 391 transitions, 5725 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 04:24:26,872 INFO L231 Difference]: Finished difference. Result has 253 places, 352 transitions, 4743 flow [2024-06-28 04:24:26,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4460, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4743, PETRI_PLACES=253, PETRI_TRANSITIONS=352} [2024-06-28 04:24:26,873 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 211 predicate places. [2024-06-28 04:24:26,873 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 352 transitions, 4743 flow [2024-06-28 04:24:26,873 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 04:24:26,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:26,873 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 04:24:26,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 04:24:26,873 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:26,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:26,873 INFO L85 PathProgramCache]: Analyzing trace with hash 723730696, now seen corresponding path program 6 times [2024-06-28 04:24:26,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:26,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049381117] [2024-06-28 04:24:26,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:26,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:28,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:24:28,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:28,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049381117] [2024-06-28 04:24:28,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049381117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:28,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:28,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:24:28,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251866348] [2024-06-28 04:24:28,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:28,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:24:28,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:28,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:24:28,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:24:28,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:24:28,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 352 transitions, 4743 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 04:24:28,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:28,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:24:28,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:29,150 INFO L124 PetriNetUnfolderBase]: 2933/4716 cut-off events. [2024-06-28 04:24:29,151 INFO L125 PetriNetUnfolderBase]: For 267556/267556 co-relation queries the response was YES. [2024-06-28 04:24:29,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36840 conditions, 4716 events. 2933/4716 cut-off events. For 267556/267556 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 28389 event pairs, 673 based on Foata normal form. 16/4724 useless extension candidates. Maximal degree in co-relation 36725. Up to 4080 conditions per place. [2024-06-28 04:24:29,205 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 279 selfloop transitions, 108 changer transitions 0/392 dead transitions. [2024-06-28 04:24:29,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 392 transitions, 5707 flow [2024-06-28 04:24:29,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:24:29,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:24:29,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2024-06-28 04:24:29,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-28 04:24:29,207 INFO L175 Difference]: Start difference. First operand has 253 places, 352 transitions, 4743 flow. Second operand 11 states and 209 transitions. [2024-06-28 04:24:29,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 392 transitions, 5707 flow [2024-06-28 04:24:29,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 392 transitions, 5558 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 04:24:29,771 INFO L231 Difference]: Finished difference. Result has 258 places, 352 transitions, 4817 flow [2024-06-28 04:24:29,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4594, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4817, PETRI_PLACES=258, PETRI_TRANSITIONS=352} [2024-06-28 04:24:29,771 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 216 predicate places. [2024-06-28 04:24:29,771 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 352 transitions, 4817 flow [2024-06-28 04:24:29,771 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 04:24:29,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:29,772 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 04:24:29,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 04:24:29,772 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:29,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:29,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1875592906, now seen corresponding path program 7 times [2024-06-28 04:24:29,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:29,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608635510] [2024-06-28 04:24:29,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:29,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:30,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:24:30,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:30,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608635510] [2024-06-28 04:24:30,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608635510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:30,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:30,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:24:30,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174058344] [2024-06-28 04:24:30,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:30,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:24:30,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:30,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:24:30,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:24:31,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:24:31,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 352 transitions, 4817 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 04:24:31,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:31,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:24:31,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:32,102 INFO L124 PetriNetUnfolderBase]: 3076/4975 cut-off events. [2024-06-28 04:24:32,103 INFO L125 PetriNetUnfolderBase]: For 286238/286238 co-relation queries the response was YES. [2024-06-28 04:24:32,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39167 conditions, 4975 events. 3076/4975 cut-off events. For 286238/286238 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 30310 event pairs, 622 based on Foata normal form. 12/4979 useless extension candidates. Maximal degree in co-relation 39050. Up to 3406 conditions per place. [2024-06-28 04:24:32,161 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 300 selfloop transitions, 90 changer transitions 0/395 dead transitions. [2024-06-28 04:24:32,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 395 transitions, 6102 flow [2024-06-28 04:24:32,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:24:32,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:24:32,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-28 04:24:32,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47317073170731705 [2024-06-28 04:24:32,162 INFO L175 Difference]: Start difference. First operand has 258 places, 352 transitions, 4817 flow. Second operand 10 states and 194 transitions. [2024-06-28 04:24:32,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 395 transitions, 6102 flow [2024-06-28 04:24:32,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 395 transitions, 5887 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 04:24:32,859 INFO L231 Difference]: Finished difference. Result has 260 places, 355 transitions, 4926 flow [2024-06-28 04:24:32,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4602, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4926, PETRI_PLACES=260, PETRI_TRANSITIONS=355} [2024-06-28 04:24:32,860 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 218 predicate places. [2024-06-28 04:24:32,860 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 355 transitions, 4926 flow [2024-06-28 04:24:32,860 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 04:24:32,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:32,861 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 04:24:32,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 04:24:32,861 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:32,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:32,862 INFO L85 PathProgramCache]: Analyzing trace with hash 478421474, now seen corresponding path program 8 times [2024-06-28 04:24:32,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:32,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914389416] [2024-06-28 04:24:32,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:32,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:32,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:33,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:24:33,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:33,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914389416] [2024-06-28 04:24:33,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914389416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:33,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:33,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:24:33,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160407508] [2024-06-28 04:24:33,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:33,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:24:33,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:33,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:24:33,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:24:34,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:24:34,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 355 transitions, 4926 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 04:24:34,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:34,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:24:34,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:35,221 INFO L124 PetriNetUnfolderBase]: 3117/5038 cut-off events. [2024-06-28 04:24:35,221 INFO L125 PetriNetUnfolderBase]: For 299072/299072 co-relation queries the response was YES. [2024-06-28 04:24:35,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40199 conditions, 5038 events. 3117/5038 cut-off events. For 299072/299072 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 30933 event pairs, 712 based on Foata normal form. 12/5034 useless extension candidates. Maximal degree in co-relation 40080. Up to 4281 conditions per place. [2024-06-28 04:24:35,273 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 312 selfloop transitions, 78 changer transitions 0/395 dead transitions. [2024-06-28 04:24:35,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 395 transitions, 6155 flow [2024-06-28 04:24:35,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:24:35,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:24:35,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-28 04:24:35,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2024-06-28 04:24:35,274 INFO L175 Difference]: Start difference. First operand has 260 places, 355 transitions, 4926 flow. Second operand 10 states and 195 transitions. [2024-06-28 04:24:35,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 395 transitions, 6155 flow [2024-06-28 04:24:35,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 395 transitions, 6008 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 04:24:35,921 INFO L231 Difference]: Finished difference. Result has 264 places, 356 transitions, 4986 flow [2024-06-28 04:24:35,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4789, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4986, PETRI_PLACES=264, PETRI_TRANSITIONS=356} [2024-06-28 04:24:35,922 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 222 predicate places. [2024-06-28 04:24:35,922 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 356 transitions, 4986 flow [2024-06-28 04:24:35,922 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 04:24:35,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:35,922 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 04:24:35,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 04:24:35,922 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:35,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:35,922 INFO L85 PathProgramCache]: Analyzing trace with hash 471004724, now seen corresponding path program 9 times [2024-06-28 04:24:35,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:35,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894219077] [2024-06-28 04:24:35,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:35,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:37,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:24:37,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:37,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894219077] [2024-06-28 04:24:37,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894219077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:37,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:37,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:24:37,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627672280] [2024-06-28 04:24:37,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:37,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:24:37,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:37,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:24:37,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:24:37,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:24:37,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 356 transitions, 4986 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 04:24:37,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:37,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:24:37,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:38,528 INFO L124 PetriNetUnfolderBase]: 3117/5045 cut-off events. [2024-06-28 04:24:38,528 INFO L125 PetriNetUnfolderBase]: For 291375/291375 co-relation queries the response was YES. [2024-06-28 04:24:38,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39362 conditions, 5045 events. 3117/5045 cut-off events. For 291375/291375 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 31138 event pairs, 742 based on Foata normal form. 16/5053 useless extension candidates. Maximal degree in co-relation 39241. Up to 4558 conditions per place. [2024-06-28 04:24:38,589 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 334 selfloop transitions, 60 changer transitions 0/399 dead transitions. [2024-06-28 04:24:38,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 399 transitions, 6015 flow [2024-06-28 04:24:38,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:24:38,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:24:38,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 208 transitions. [2024-06-28 04:24:38,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4611973392461197 [2024-06-28 04:24:38,590 INFO L175 Difference]: Start difference. First operand has 264 places, 356 transitions, 4986 flow. Second operand 11 states and 208 transitions. [2024-06-28 04:24:38,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 399 transitions, 6015 flow [2024-06-28 04:24:39,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 399 transitions, 5777 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 04:24:39,156 INFO L231 Difference]: Finished difference. Result has 267 places, 361 transitions, 4939 flow [2024-06-28 04:24:39,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4756, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4939, PETRI_PLACES=267, PETRI_TRANSITIONS=361} [2024-06-28 04:24:39,156 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 225 predicate places. [2024-06-28 04:24:39,157 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 361 transitions, 4939 flow [2024-06-28 04:24:39,157 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 04:24:39,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:39,157 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 04:24:39,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 04:24:39,157 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:39,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:39,157 INFO L85 PathProgramCache]: Analyzing trace with hash -2132958494, now seen corresponding path program 10 times [2024-06-28 04:24:39,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:39,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046670905] [2024-06-28 04:24:39,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:39,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:40,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:24:40,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:40,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046670905] [2024-06-28 04:24:40,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046670905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:40,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:40,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:24:40,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634808243] [2024-06-28 04:24:40,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:40,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:24:40,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:40,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:24:40,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:24:40,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:24:40,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 361 transitions, 4939 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 04:24:40,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:40,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:24:40,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:41,770 INFO L124 PetriNetUnfolderBase]: 3089/5001 cut-off events. [2024-06-28 04:24:41,770 INFO L125 PetriNetUnfolderBase]: For 277551/277551 co-relation queries the response was YES. [2024-06-28 04:24:41,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37960 conditions, 5001 events. 3089/5001 cut-off events. For 277551/277551 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 30803 event pairs, 726 based on Foata normal form. 16/5009 useless extension candidates. Maximal degree in co-relation 37839. Up to 4519 conditions per place. [2024-06-28 04:24:41,830 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 333 selfloop transitions, 62 changer transitions 0/400 dead transitions. [2024-06-28 04:24:41,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 400 transitions, 5920 flow [2024-06-28 04:24:41,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:24:41,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:24:41,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-28 04:24:41,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567627494456763 [2024-06-28 04:24:41,831 INFO L175 Difference]: Start difference. First operand has 267 places, 361 transitions, 4939 flow. Second operand 11 states and 206 transitions. [2024-06-28 04:24:41,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 400 transitions, 5920 flow [2024-06-28 04:24:42,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 400 transitions, 5804 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 04:24:42,326 INFO L231 Difference]: Finished difference. Result has 270 places, 362 transitions, 4966 flow [2024-06-28 04:24:42,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4823, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4966, PETRI_PLACES=270, PETRI_TRANSITIONS=362} [2024-06-28 04:24:42,326 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 228 predicate places. [2024-06-28 04:24:42,326 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 362 transitions, 4966 flow [2024-06-28 04:24:42,327 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 04:24:42,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:42,327 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 04:24:42,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 04:24:42,327 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:42,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:42,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1957320237, now seen corresponding path program 1 times [2024-06-28 04:24:42,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:42,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124456918] [2024-06-28 04:24:42,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:42,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:43,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:24:43,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:43,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124456918] [2024-06-28 04:24:43,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124456918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:43,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:43,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:24:43,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665321209] [2024-06-28 04:24:43,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:43,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:24:43,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:43,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:24:43,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:24:43,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 04:24:43,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 362 transitions, 4966 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:43,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:43,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 04:24:43,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:44,096 INFO L124 PetriNetUnfolderBase]: 2984/4905 cut-off events. [2024-06-28 04:24:44,096 INFO L125 PetriNetUnfolderBase]: For 272308/272309 co-relation queries the response was YES. [2024-06-28 04:24:44,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37520 conditions, 4905 events. 2984/4905 cut-off events. For 272308/272309 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 30909 event pairs, 749 based on Foata normal form. 4/4903 useless extension candidates. Maximal degree in co-relation 37398. Up to 4425 conditions per place. [2024-06-28 04:24:44,153 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 303 selfloop transitions, 50 changer transitions 0/400 dead transitions. [2024-06-28 04:24:44,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 400 transitions, 6286 flow [2024-06-28 04:24:44,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:24:44,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:24:44,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-28 04:24:44,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49085365853658536 [2024-06-28 04:24:44,154 INFO L175 Difference]: Start difference. First operand has 270 places, 362 transitions, 4966 flow. Second operand 8 states and 161 transitions. [2024-06-28 04:24:44,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 400 transitions, 6286 flow [2024-06-28 04:24:44,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 400 transitions, 6160 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 04:24:44,639 INFO L231 Difference]: Finished difference. Result has 271 places, 374 transitions, 5179 flow [2024-06-28 04:24:44,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4840, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5179, PETRI_PLACES=271, PETRI_TRANSITIONS=374} [2024-06-28 04:24:44,639 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 229 predicate places. [2024-06-28 04:24:44,639 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 374 transitions, 5179 flow [2024-06-28 04:24:44,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:44,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:44,640 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 04:24:44,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 04:24:44,640 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:44,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:44,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1957323957, now seen corresponding path program 2 times [2024-06-28 04:24:44,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:44,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956764789] [2024-06-28 04:24:44,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:44,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:45,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:24:45,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:45,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956764789] [2024-06-28 04:24:45,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956764789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:45,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:45,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:24:45,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53746418] [2024-06-28 04:24:45,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:45,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:24:45,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:45,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:24:45,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:24:45,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 04:24:45,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 374 transitions, 5179 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:45,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:45,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 04:24:45,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:46,580 INFO L124 PetriNetUnfolderBase]: 2994/4919 cut-off events. [2024-06-28 04:24:46,580 INFO L125 PetriNetUnfolderBase]: For 283200/283219 co-relation queries the response was YES. [2024-06-28 04:24:46,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38201 conditions, 4919 events. 2994/4919 cut-off events. For 283200/283219 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 31002 event pairs, 750 based on Foata normal form. 4/4916 useless extension candidates. Maximal degree in co-relation 38076. Up to 4487 conditions per place. [2024-06-28 04:24:46,637 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 313 selfloop transitions, 37 changer transitions 0/397 dead transitions. [2024-06-28 04:24:46,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 397 transitions, 6003 flow [2024-06-28 04:24:46,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:24:46,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:24:46,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 04:24:46,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46646341463414637 [2024-06-28 04:24:46,638 INFO L175 Difference]: Start difference. First operand has 271 places, 374 transitions, 5179 flow. Second operand 8 states and 153 transitions. [2024-06-28 04:24:46,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 397 transitions, 6003 flow [2024-06-28 04:24:47,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 397 transitions, 5932 flow, removed 29 selfloop flow, removed 2 redundant places. [2024-06-28 04:24:47,308 INFO L231 Difference]: Finished difference. Result has 277 places, 377 transitions, 5244 flow [2024-06-28 04:24:47,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5114, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5244, PETRI_PLACES=277, PETRI_TRANSITIONS=377} [2024-06-28 04:24:47,308 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 235 predicate places. [2024-06-28 04:24:47,308 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 377 transitions, 5244 flow [2024-06-28 04:24:47,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:47,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:47,309 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 04:24:47,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 04:24:47,309 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:47,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:47,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1542901405, now seen corresponding path program 3 times [2024-06-28 04:24:47,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:47,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66476597] [2024-06-28 04:24:47,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:47,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:48,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:24:48,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:48,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66476597] [2024-06-28 04:24:48,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66476597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:48,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:48,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:24:48,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587478657] [2024-06-28 04:24:48,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:48,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:24:48,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:48,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:24:48,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:24:48,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 04:24:48,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 377 transitions, 5244 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:48,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:48,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 04:24:48,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:49,170 INFO L124 PetriNetUnfolderBase]: 3002/4931 cut-off events. [2024-06-28 04:24:49,170 INFO L125 PetriNetUnfolderBase]: For 289614/289632 co-relation queries the response was YES. [2024-06-28 04:24:49,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38447 conditions, 4931 events. 3002/4931 cut-off events. For 289614/289632 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 31120 event pairs, 753 based on Foata normal form. 2/4927 useless extension candidates. Maximal degree in co-relation 38320. Up to 4526 conditions per place. [2024-06-28 04:24:49,228 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 321 selfloop transitions, 29 changer transitions 0/397 dead transitions. [2024-06-28 04:24:49,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 397 transitions, 6054 flow [2024-06-28 04:24:49,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:24:49,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:24:49,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 04:24:49,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45426829268292684 [2024-06-28 04:24:49,229 INFO L175 Difference]: Start difference. First operand has 277 places, 377 transitions, 5244 flow. Second operand 8 states and 149 transitions. [2024-06-28 04:24:49,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 397 transitions, 6054 flow [2024-06-28 04:24:50,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 397 transitions, 5952 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 04:24:50,023 INFO L231 Difference]: Finished difference. Result has 279 places, 380 transitions, 5262 flow [2024-06-28 04:24:50,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5142, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5262, PETRI_PLACES=279, PETRI_TRANSITIONS=380} [2024-06-28 04:24:50,024 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 237 predicate places. [2024-06-28 04:24:50,024 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 380 transitions, 5262 flow [2024-06-28 04:24:50,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:50,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:50,025 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 04:24:50,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 04:24:50,025 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:50,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:50,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1793451933, now seen corresponding path program 4 times [2024-06-28 04:24:50,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:50,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462627109] [2024-06-28 04:24:50,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:50,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:50,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:24:50,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:50,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462627109] [2024-06-28 04:24:50,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462627109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:50,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:50,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:24:50,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47909710] [2024-06-28 04:24:50,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:50,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:24:50,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:50,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:24:50,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:24:51,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 04:24:51,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 380 transitions, 5262 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:51,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:51,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 04:24:51,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:51,979 INFO L124 PetriNetUnfolderBase]: 3002/4931 cut-off events. [2024-06-28 04:24:51,979 INFO L125 PetriNetUnfolderBase]: For 294750/294752 co-relation queries the response was YES. [2024-06-28 04:24:52,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38404 conditions, 4931 events. 3002/4931 cut-off events. For 294750/294752 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 31122 event pairs, 753 based on Foata normal form. 4/4927 useless extension candidates. Maximal degree in co-relation 38276. Up to 4510 conditions per place. [2024-06-28 04:24:52,044 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 327 selfloop transitions, 30 changer transitions 0/404 dead transitions. [2024-06-28 04:24:52,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 404 transitions, 6114 flow [2024-06-28 04:24:52,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:24:52,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:24:52,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-28 04:24:52,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4912891986062718 [2024-06-28 04:24:52,045 INFO L175 Difference]: Start difference. First operand has 279 places, 380 transitions, 5262 flow. Second operand 7 states and 141 transitions. [2024-06-28 04:24:52,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 404 transitions, 6114 flow [2024-06-28 04:24:53,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 404 transitions, 6022 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 04:24:53,017 INFO L231 Difference]: Finished difference. Result has 280 places, 383 transitions, 5302 flow [2024-06-28 04:24:53,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5170, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5302, PETRI_PLACES=280, PETRI_TRANSITIONS=383} [2024-06-28 04:24:53,018 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 238 predicate places. [2024-06-28 04:24:53,018 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 383 transitions, 5302 flow [2024-06-28 04:24:53,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:53,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:53,018 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 04:24:53,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 04:24:53,018 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:53,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:53,019 INFO L85 PathProgramCache]: Analyzing trace with hash -2118697291, now seen corresponding path program 1 times [2024-06-28 04:24:53,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:53,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138865617] [2024-06-28 04:24:53,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:53,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:53,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:24:53,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:53,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138865617] [2024-06-28 04:24:53,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138865617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:53,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:53,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:24:53,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715144536] [2024-06-28 04:24:53,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:53,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:24:53,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:53,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:24:53,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:24:53,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:24:53,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 383 transitions, 5302 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 04:24:53,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:53,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:24:53,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:55,007 INFO L124 PetriNetUnfolderBase]: 3130/5063 cut-off events. [2024-06-28 04:24:55,008 INFO L125 PetriNetUnfolderBase]: For 296443/296443 co-relation queries the response was YES. [2024-06-28 04:24:55,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39374 conditions, 5063 events. 3130/5063 cut-off events. For 296443/296443 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 31310 event pairs, 782 based on Foata normal form. 1/5061 useless extension candidates. Maximal degree in co-relation 39245. Up to 4829 conditions per place. [2024-06-28 04:24:55,059 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 362 selfloop transitions, 27 changer transitions 0/394 dead transitions. [2024-06-28 04:24:55,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 394 transitions, 6122 flow [2024-06-28 04:24:55,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:24:55,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:24:55,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2024-06-28 04:24:55,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2024-06-28 04:24:55,060 INFO L175 Difference]: Start difference. First operand has 280 places, 383 transitions, 5302 flow. Second operand 5 states and 100 transitions. [2024-06-28 04:24:55,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 394 transitions, 6122 flow [2024-06-28 04:24:55,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 394 transitions, 6004 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-28 04:24:55,779 INFO L231 Difference]: Finished difference. Result has 280 places, 383 transitions, 5259 flow [2024-06-28 04:24:55,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5184, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5259, PETRI_PLACES=280, PETRI_TRANSITIONS=383} [2024-06-28 04:24:55,780 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 238 predicate places. [2024-06-28 04:24:55,780 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 383 transitions, 5259 flow [2024-06-28 04:24:55,780 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 04:24:55,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:55,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:24:55,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 04:24:55,780 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:55,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:55,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1716848810, now seen corresponding path program 1 times [2024-06-28 04:24:55,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:55,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90192722] [2024-06-28 04:24:55,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:55,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:56,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:24:56,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:56,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90192722] [2024-06-28 04:24:56,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90192722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:56,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:56,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:24:56,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118363184] [2024-06-28 04:24:56,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:56,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:24:56,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:56,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:24:56,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:24:57,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:24:57,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 383 transitions, 5259 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 04:24:57,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:57,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:24:57,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:58,318 INFO L124 PetriNetUnfolderBase]: 3171/5126 cut-off events. [2024-06-28 04:24:58,318 INFO L125 PetriNetUnfolderBase]: For 321676/321676 co-relation queries the response was YES. [2024-06-28 04:24:58,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39904 conditions, 5126 events. 3171/5126 cut-off events. For 321676/321676 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 31660 event pairs, 678 based on Foata normal form. 12/5135 useless extension candidates. Maximal degree in co-relation 39774. Up to 4643 conditions per place. [2024-06-28 04:24:58,391 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 359 selfloop transitions, 57 changer transitions 0/421 dead transitions. [2024-06-28 04:24:58,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 421 transitions, 6285 flow [2024-06-28 04:24:58,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:24:58,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:24:58,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 04:24:58,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609756097560976 [2024-06-28 04:24:58,392 INFO L175 Difference]: Start difference. First operand has 280 places, 383 transitions, 5259 flow. Second operand 10 states and 189 transitions. [2024-06-28 04:24:58,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 421 transitions, 6285 flow [2024-06-28 04:24:59,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 421 transitions, 6231 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 04:24:59,436 INFO L231 Difference]: Finished difference. Result has 286 places, 384 transitions, 5369 flow [2024-06-28 04:24:59,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5205, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5369, PETRI_PLACES=286, PETRI_TRANSITIONS=384} [2024-06-28 04:24:59,436 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 244 predicate places. [2024-06-28 04:24:59,437 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 384 transitions, 5369 flow [2024-06-28 04:24:59,437 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 04:24:59,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:59,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:24:59,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 04:24:59,437 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:59,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:59,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1107931306, now seen corresponding path program 2 times [2024-06-28 04:24:59,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:59,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608203841] [2024-06-28 04:24:59,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:59,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:25:00,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:25:00,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:25:00,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608203841] [2024-06-28 04:25:00,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608203841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:25:00,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:25:00,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:25:00,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603518258] [2024-06-28 04:25:00,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:25:00,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:25:00,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:25:00,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:25:00,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:25:00,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:25:00,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 384 transitions, 5369 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 04:25:00,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:25:00,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:25:00,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:01,914 INFO L124 PetriNetUnfolderBase]: 3212/5208 cut-off events. [2024-06-28 04:25:01,914 INFO L125 PetriNetUnfolderBase]: For 334507/334507 co-relation queries the response was YES. [2024-06-28 04:25:01,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40768 conditions, 5208 events. 3212/5208 cut-off events. For 334507/334507 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 32406 event pairs, 718 based on Foata normal form. 12/5217 useless extension candidates. Maximal degree in co-relation 40637. Up to 4762 conditions per place. [2024-06-28 04:25:01,972 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 371 selfloop transitions, 48 changer transitions 0/424 dead transitions. [2024-06-28 04:25:01,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 424 transitions, 6409 flow [2024-06-28 04:25:01,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:25:01,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:25:01,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 04:25:01,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609756097560976 [2024-06-28 04:25:01,974 INFO L175 Difference]: Start difference. First operand has 286 places, 384 transitions, 5369 flow. Second operand 10 states and 189 transitions. [2024-06-28 04:25:01,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 424 transitions, 6409 flow [2024-06-28 04:25:02,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 424 transitions, 6273 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 04:25:02,798 INFO L231 Difference]: Finished difference. Result has 288 places, 385 transitions, 5381 flow [2024-06-28 04:25:02,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5233, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5381, PETRI_PLACES=288, PETRI_TRANSITIONS=385} [2024-06-28 04:25:02,799 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 246 predicate places. [2024-06-28 04:25:02,799 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 385 transitions, 5381 flow [2024-06-28 04:25:02,799 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 04:25:02,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:02,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:25:02,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 04:25:02,800 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:25:02,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:02,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1103347336, now seen corresponding path program 3 times [2024-06-28 04:25:02,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:02,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279235387] [2024-06-28 04:25:02,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:02,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:25:03,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:25:03,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:25:03,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279235387] [2024-06-28 04:25:03,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279235387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:25:03,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:25:03,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:25:03,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035448290] [2024-06-28 04:25:03,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:25:03,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:25:03,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:25:03,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:25:03,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:25:04,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:25:04,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 385 transitions, 5381 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 04:25:04,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:25:04,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:25:04,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:05,412 INFO L124 PetriNetUnfolderBase]: 3253/5279 cut-off events. [2024-06-28 04:25:05,412 INFO L125 PetriNetUnfolderBase]: For 344538/344538 co-relation queries the response was YES. [2024-06-28 04:25:05,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41296 conditions, 5279 events. 3253/5279 cut-off events. For 344538/344538 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 32993 event pairs, 745 based on Foata normal form. 12/5288 useless extension candidates. Maximal degree in co-relation 41164. Up to 4879 conditions per place. [2024-06-28 04:25:05,467 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 373 selfloop transitions, 46 changer transitions 0/424 dead transitions. [2024-06-28 04:25:05,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 424 transitions, 6421 flow [2024-06-28 04:25:05,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:25:05,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:25:05,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-28 04:25:05,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560975609756098 [2024-06-28 04:25:05,468 INFO L175 Difference]: Start difference. First operand has 288 places, 385 transitions, 5381 flow. Second operand 10 states and 187 transitions. [2024-06-28 04:25:05,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 424 transitions, 6421 flow [2024-06-28 04:25:06,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 424 transitions, 6301 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 04:25:06,265 INFO L231 Difference]: Finished difference. Result has 290 places, 386 transitions, 5407 flow [2024-06-28 04:25:06,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5261, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5407, PETRI_PLACES=290, PETRI_TRANSITIONS=386} [2024-06-28 04:25:06,266 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 248 predicate places. [2024-06-28 04:25:06,266 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 386 transitions, 5407 flow [2024-06-28 04:25:06,266 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 04:25:06,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:06,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:25:06,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 04:25:06,266 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:25:06,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:06,267 INFO L85 PathProgramCache]: Analyzing trace with hash 441497430, now seen corresponding path program 4 times [2024-06-28 04:25:06,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:06,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691345183] [2024-06-28 04:25:06,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:06,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:25:07,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:25:07,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:25:07,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691345183] [2024-06-28 04:25:07,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691345183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:25:07,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:25:07,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:25:07,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785891080] [2024-06-28 04:25:07,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:25:07,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:25:07,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:25:07,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:25:07,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:25:07,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:25:07,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 386 transitions, 5407 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 04:25:07,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:25:07,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:25:07,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:08,707 INFO L124 PetriNetUnfolderBase]: 3294/5340 cut-off events. [2024-06-28 04:25:08,707 INFO L125 PetriNetUnfolderBase]: For 354710/354710 co-relation queries the response was YES. [2024-06-28 04:25:08,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41829 conditions, 5340 events. 3294/5340 cut-off events. For 354710/354710 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 33295 event pairs, 600 based on Foata normal form. 12/5349 useless extension candidates. Maximal degree in co-relation 41696. Up to 4623 conditions per place. [2024-06-28 04:25:08,774 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 366 selfloop transitions, 56 changer transitions 0/427 dead transitions. [2024-06-28 04:25:08,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 427 transitions, 6459 flow [2024-06-28 04:25:08,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:25:08,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:25:08,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-28 04:25:08,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560975609756098 [2024-06-28 04:25:08,775 INFO L175 Difference]: Start difference. First operand has 290 places, 386 transitions, 5407 flow. Second operand 10 states and 187 transitions. [2024-06-28 04:25:08,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 427 transitions, 6459 flow [2024-06-28 04:25:09,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 427 transitions, 6341 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 04:25:09,909 INFO L231 Difference]: Finished difference. Result has 292 places, 387 transitions, 5457 flow [2024-06-28 04:25:09,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5289, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5457, PETRI_PLACES=292, PETRI_TRANSITIONS=387} [2024-06-28 04:25:09,909 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 250 predicate places. [2024-06-28 04:25:09,909 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 387 transitions, 5457 flow [2024-06-28 04:25:09,910 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 04:25:09,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:09,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:25:09,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 04:25:09,910 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:25:09,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:09,910 INFO L85 PathProgramCache]: Analyzing trace with hash -746849442, now seen corresponding path program 1 times [2024-06-28 04:25:09,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:09,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752944299] [2024-06-28 04:25:09,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:09,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:25:10,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:25:10,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:25:10,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752944299] [2024-06-28 04:25:10,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752944299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:25:10,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:25:10,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:25:10,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547364330] [2024-06-28 04:25:10,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:25:10,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:25:10,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:25:10,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:25:10,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:25:10,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:25:10,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 387 transitions, 5457 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 04:25:10,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:25:10,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:25:10,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:11,792 INFO L124 PetriNetUnfolderBase]: 3320/5382 cut-off events. [2024-06-28 04:25:11,792 INFO L125 PetriNetUnfolderBase]: For 352411/352411 co-relation queries the response was YES. [2024-06-28 04:25:11,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42557 conditions, 5382 events. 3320/5382 cut-off events. For 352411/352411 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 33664 event pairs, 794 based on Foata normal form. 2/5381 useless extension candidates. Maximal degree in co-relation 42423. Up to 5063 conditions per place. [2024-06-28 04:25:11,866 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 364 selfloop transitions, 48 changer transitions 0/417 dead transitions. [2024-06-28 04:25:11,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 417 transitions, 6679 flow [2024-06-28 04:25:11,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:25:11,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:25:11,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 04:25:11,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46646341463414637 [2024-06-28 04:25:11,867 INFO L175 Difference]: Start difference. First operand has 292 places, 387 transitions, 5457 flow. Second operand 8 states and 153 transitions. [2024-06-28 04:25:11,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 417 transitions, 6679 flow [2024-06-28 04:25:12,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 417 transitions, 6539 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 04:25:12,980 INFO L231 Difference]: Finished difference. Result has 292 places, 393 transitions, 5579 flow [2024-06-28 04:25:12,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5317, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5579, PETRI_PLACES=292, PETRI_TRANSITIONS=393} [2024-06-28 04:25:12,980 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 250 predicate places. [2024-06-28 04:25:12,980 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 393 transitions, 5579 flow [2024-06-28 04:25:12,981 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 04:25:12,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:12,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:25:12,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 04:25:12,981 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:25:12,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:12,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1756718470, now seen corresponding path program 1 times [2024-06-28 04:25:12,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:12,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321953068] [2024-06-28 04:25:12,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:12,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:25:13,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:25:13,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:25:13,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321953068] [2024-06-28 04:25:13,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321953068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:25:13,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:25:13,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:25:13,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579754682] [2024-06-28 04:25:13,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:25:13,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:25:13,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:25:13,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:25:13,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:25:13,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:25:13,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 393 transitions, 5579 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 04:25:13,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:25:13,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:25:13,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:14,810 INFO L124 PetriNetUnfolderBase]: 3382/5474 cut-off events. [2024-06-28 04:25:14,810 INFO L125 PetriNetUnfolderBase]: For 376011/376011 co-relation queries the response was YES. [2024-06-28 04:25:14,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43674 conditions, 5474 events. 3382/5474 cut-off events. For 376011/376011 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 34350 event pairs, 798 based on Foata normal form. 4/5475 useless extension candidates. Maximal degree in co-relation 43539. Up to 5131 conditions per place. [2024-06-28 04:25:14,881 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 380 selfloop transitions, 48 changer transitions 0/433 dead transitions. [2024-06-28 04:25:14,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 433 transitions, 6922 flow [2024-06-28 04:25:14,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:25:14,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:25:14,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 04:25:14,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4695121951219512 [2024-06-28 04:25:14,883 INFO L175 Difference]: Start difference. First operand has 292 places, 393 transitions, 5579 flow. Second operand 8 states and 154 transitions. [2024-06-28 04:25:14,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 433 transitions, 6922 flow [2024-06-28 04:25:15,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 433 transitions, 6792 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-28 04:25:15,882 INFO L231 Difference]: Finished difference. Result has 298 places, 409 transitions, 5840 flow [2024-06-28 04:25:15,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5454, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5840, PETRI_PLACES=298, PETRI_TRANSITIONS=409} [2024-06-28 04:25:15,883 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 256 predicate places. [2024-06-28 04:25:15,883 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 409 transitions, 5840 flow [2024-06-28 04:25:15,883 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 04:25:15,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:15,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:25:15,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 04:25:15,883 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:25:15,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:15,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1756718656, now seen corresponding path program 2 times [2024-06-28 04:25:15,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:15,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666627875] [2024-06-28 04:25:15,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:15,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:25:16,583 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 04:25:16,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:25:16,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666627875] [2024-06-28 04:25:16,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666627875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:25:16,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:25:16,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:25:16,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152099733] [2024-06-28 04:25:16,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:25:16,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:25:16,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:25:16,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:25:16,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:25:16,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:25:16,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 409 transitions, 5840 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 04:25:16,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:25:16,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:25:16,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:17,952 INFO L124 PetriNetUnfolderBase]: 3392/5486 cut-off events. [2024-06-28 04:25:17,952 INFO L125 PetriNetUnfolderBase]: For 386102/386102 co-relation queries the response was YES. [2024-06-28 04:25:17,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44599 conditions, 5486 events. 3392/5486 cut-off events. For 386102/386102 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 34397 event pairs, 798 based on Foata normal form. 2/5485 useless extension candidates. Maximal degree in co-relation 44460. Up to 5199 conditions per place. [2024-06-28 04:25:18,020 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 383 selfloop transitions, 44 changer transitions 0/432 dead transitions. [2024-06-28 04:25:18,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 432 transitions, 6855 flow [2024-06-28 04:25:18,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:25:18,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:25:18,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 04:25:18,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45121951219512196 [2024-06-28 04:25:18,021 INFO L175 Difference]: Start difference. First operand has 298 places, 409 transitions, 5840 flow. Second operand 8 states and 148 transitions. [2024-06-28 04:25:18,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 432 transitions, 6855 flow [2024-06-28 04:25:19,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 432 transitions, 6750 flow, removed 47 selfloop flow, removed 2 redundant places. [2024-06-28 04:25:19,087 INFO L231 Difference]: Finished difference. Result has 304 places, 412 transitions, 5908 flow [2024-06-28 04:25:19,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5737, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5908, PETRI_PLACES=304, PETRI_TRANSITIONS=412} [2024-06-28 04:25:19,088 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 262 predicate places. [2024-06-28 04:25:19,088 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 412 transitions, 5908 flow [2024-06-28 04:25:19,088 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 04:25:19,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:19,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:25:19,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 04:25:19,088 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:25:19,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:19,088 INFO L85 PathProgramCache]: Analyzing trace with hash -569597952, now seen corresponding path program 3 times [2024-06-28 04:25:19,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:19,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154932454] [2024-06-28 04:25:19,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:19,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:25:19,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:25:19,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:25:19,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154932454] [2024-06-28 04:25:19,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154932454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:25:19,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:25:19,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:25:19,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187084162] [2024-06-28 04:25:19,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:25:19,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:25:19,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:25:19,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:25:19,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:25:19,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:25:19,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 412 transitions, 5908 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 04:25:19,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:25:19,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:25:19,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:21,106 INFO L124 PetriNetUnfolderBase]: 3412/5524 cut-off events. [2024-06-28 04:25:21,107 INFO L125 PetriNetUnfolderBase]: For 394536/394536 co-relation queries the response was YES. [2024-06-28 04:25:21,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44805 conditions, 5524 events. 3412/5524 cut-off events. For 394536/394536 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 34641 event pairs, 795 based on Foata normal form. 2/5523 useless extension candidates. Maximal degree in co-relation 44664. Up to 5263 conditions per place. [2024-06-28 04:25:21,181 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 396 selfloop transitions, 37 changer transitions 0/438 dead transitions. [2024-06-28 04:25:21,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 438 transitions, 7020 flow [2024-06-28 04:25:21,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:25:21,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:25:21,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 04:25:21,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43597560975609756 [2024-06-28 04:25:21,182 INFO L175 Difference]: Start difference. First operand has 304 places, 412 transitions, 5908 flow. Second operand 8 states and 143 transitions. [2024-06-28 04:25:21,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 438 transitions, 7020 flow [2024-06-28 04:25:22,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 438 transitions, 6851 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-28 04:25:22,397 INFO L231 Difference]: Finished difference. Result has 306 places, 421 transitions, 6015 flow [2024-06-28 04:25:22,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5755, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6015, PETRI_PLACES=306, PETRI_TRANSITIONS=421} [2024-06-28 04:25:22,398 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 264 predicate places. [2024-06-28 04:25:22,398 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 421 transitions, 6015 flow [2024-06-28 04:25:22,398 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 04:25:22,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:22,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:25:22,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 04:25:22,398 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:25:22,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:22,399 INFO L85 PathProgramCache]: Analyzing trace with hash -2118354670, now seen corresponding path program 2 times [2024-06-28 04:25:22,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:22,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824619280] [2024-06-28 04:25:22,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:22,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:25:23,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:25:23,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:25:23,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824619280] [2024-06-28 04:25:23,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824619280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:25:23,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:25:23,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:25:23,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165672128] [2024-06-28 04:25:23,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:25:23,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:25:23,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:25:23,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:25:23,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:25:23,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:25:23,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 421 transitions, 6015 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 04:25:23,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:25:23,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:25:23,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:24,387 INFO L124 PetriNetUnfolderBase]: 3432/5548 cut-off events. [2024-06-28 04:25:24,388 INFO L125 PetriNetUnfolderBase]: For 409664/409664 co-relation queries the response was YES. [2024-06-28 04:25:24,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45108 conditions, 5548 events. 3432/5548 cut-off events. For 409664/409664 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 34796 event pairs, 794 based on Foata normal form. 4/5549 useless extension candidates. Maximal degree in co-relation 44966. Up to 5279 conditions per place. [2024-06-28 04:25:24,464 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 398 selfloop transitions, 40 changer transitions 0/443 dead transitions. [2024-06-28 04:25:24,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 443 transitions, 7043 flow [2024-06-28 04:25:24,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:25:24,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:25:24,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 04:25:24,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420731707317073 [2024-06-28 04:25:24,466 INFO L175 Difference]: Start difference. First operand has 306 places, 421 transitions, 6015 flow. Second operand 8 states and 145 transitions. [2024-06-28 04:25:24,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 443 transitions, 7043 flow [2024-06-28 04:25:25,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 443 transitions, 6904 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-28 04:25:25,661 INFO L231 Difference]: Finished difference. Result has 310 places, 426 transitions, 6046 flow [2024-06-28 04:25:25,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5876, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6046, PETRI_PLACES=310, PETRI_TRANSITIONS=426} [2024-06-28 04:25:25,662 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 268 predicate places. [2024-06-28 04:25:25,662 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 426 transitions, 6046 flow [2024-06-28 04:25:25,662 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 04:25:25,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:25,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:25:25,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 04:25:25,663 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:25:25,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:25,663 INFO L85 PathProgramCache]: Analyzing trace with hash -2118591820, now seen corresponding path program 3 times [2024-06-28 04:25:25,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:25,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844829288] [2024-06-28 04:25:25,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:25,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:25:26,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:25:26,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:25:26,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844829288] [2024-06-28 04:25:26,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844829288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:25:26,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:25:26,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:25:26,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874799209] [2024-06-28 04:25:26,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:25:26,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:25:26,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:25:26,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:25:26,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:25:26,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:25:26,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 426 transitions, 6046 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 04:25:26,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:25:26,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:25:26,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:27,564 INFO L124 PetriNetUnfolderBase]: 3452/5584 cut-off events. [2024-06-28 04:25:27,564 INFO L125 PetriNetUnfolderBase]: For 418140/418140 co-relation queries the response was YES. [2024-06-28 04:25:27,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45483 conditions, 5584 events. 3452/5584 cut-off events. For 418140/418140 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 35081 event pairs, 800 based on Foata normal form. 4/5585 useless extension candidates. Maximal degree in co-relation 45340. Up to 5281 conditions per place. [2024-06-28 04:25:27,635 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 399 selfloop transitions, 45 changer transitions 0/449 dead transitions. [2024-06-28 04:25:27,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 449 transitions, 7109 flow [2024-06-28 04:25:27,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:25:27,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:25:27,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 04:25:27,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45426829268292684 [2024-06-28 04:25:27,637 INFO L175 Difference]: Start difference. First operand has 310 places, 426 transitions, 6046 flow. Second operand 8 states and 149 transitions. [2024-06-28 04:25:27,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 449 transitions, 7109 flow [2024-06-28 04:25:28,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 449 transitions, 6978 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-28 04:25:28,787 INFO L231 Difference]: Finished difference. Result has 313 places, 429 transitions, 6088 flow [2024-06-28 04:25:28,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5915, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6088, PETRI_PLACES=313, PETRI_TRANSITIONS=429} [2024-06-28 04:25:28,787 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 271 predicate places. [2024-06-28 04:25:28,787 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 429 transitions, 6088 flow [2024-06-28 04:25:28,787 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 04:25:28,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:28,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:25:28,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 04:25:28,788 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:25:28,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:28,788 INFO L85 PathProgramCache]: Analyzing trace with hash -2118345742, now seen corresponding path program 1 times [2024-06-28 04:25:28,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:28,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356885844] [2024-06-28 04:25:28,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:28,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:25:29,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:25:29,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:25:29,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356885844] [2024-06-28 04:25:29,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356885844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:25:29,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:25:29,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:25:29,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912373546] [2024-06-28 04:25:29,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:25:29,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:25:29,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:25:29,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:25:29,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:25:29,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:25:29,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 429 transitions, 6088 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:25:29,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:25:29,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:25:29,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:31,467 INFO L124 PetriNetUnfolderBase]: 3496/5641 cut-off events. [2024-06-28 04:25:31,467 INFO L125 PetriNetUnfolderBase]: For 447096/447096 co-relation queries the response was YES. [2024-06-28 04:25:31,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45911 conditions, 5641 events. 3496/5641 cut-off events. For 447096/447096 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 35323 event pairs, 762 based on Foata normal form. 12/5650 useless extension candidates. Maximal degree in co-relation 45767. Up to 5218 conditions per place. [2024-06-28 04:25:31,532 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 377 selfloop transitions, 73 changer transitions 0/455 dead transitions. [2024-06-28 04:25:31,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 455 transitions, 7172 flow [2024-06-28 04:25:31,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:25:31,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:25:31,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 04:25:31,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46646341463414637 [2024-06-28 04:25:31,533 INFO L175 Difference]: Start difference. First operand has 313 places, 429 transitions, 6088 flow. Second operand 8 states and 153 transitions. [2024-06-28 04:25:31,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 455 transitions, 7172 flow [2024-06-28 04:25:32,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 455 transitions, 7031 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 04:25:32,854 INFO L231 Difference]: Finished difference. Result has 315 places, 430 transitions, 6112 flow [2024-06-28 04:25:32,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5947, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6112, PETRI_PLACES=315, PETRI_TRANSITIONS=430} [2024-06-28 04:25:32,854 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 273 predicate places. [2024-06-28 04:25:32,854 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 430 transitions, 6112 flow [2024-06-28 04:25:32,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:25:32,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:32,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:25:32,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 04:25:32,855 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:25:32,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:32,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1452303180, now seen corresponding path program 5 times [2024-06-28 04:25:32,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:32,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473850979] [2024-06-28 04:25:32,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:32,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:25:33,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:25:33,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:25:33,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473850979] [2024-06-28 04:25:33,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473850979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:25:33,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:25:33,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:25:33,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332222515] [2024-06-28 04:25:33,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:25:33,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:25:33,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:25:33,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:25:33,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:25:34,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:25:34,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 430 transitions, 6112 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 04:25:34,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:25:34,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:25:34,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:35,378 INFO L124 PetriNetUnfolderBase]: 3476/5615 cut-off events. [2024-06-28 04:25:35,378 INFO L125 PetriNetUnfolderBase]: For 424501/424501 co-relation queries the response was YES. [2024-06-28 04:25:35,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45062 conditions, 5615 events. 3476/5615 cut-off events. For 424501/424501 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 35282 event pairs, 735 based on Foata normal form. 12/5608 useless extension candidates. Maximal degree in co-relation 44917. Up to 5000 conditions per place. [2024-06-28 04:25:35,460 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 378 selfloop transitions, 81 changer transitions 0/464 dead transitions. [2024-06-28 04:25:35,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 464 transitions, 7066 flow [2024-06-28 04:25:35,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:25:35,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:25:35,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-28 04:25:35,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4585365853658537 [2024-06-28 04:25:35,461 INFO L175 Difference]: Start difference. First operand has 315 places, 430 transitions, 6112 flow. Second operand 10 states and 188 transitions. [2024-06-28 04:25:35,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 464 transitions, 7066 flow [2024-06-28 04:25:36,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 464 transitions, 6919 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 04:25:36,859 INFO L231 Difference]: Finished difference. Result has 318 places, 429 transitions, 6021 flow [2024-06-28 04:25:36,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5855, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6021, PETRI_PLACES=318, PETRI_TRANSITIONS=429} [2024-06-28 04:25:36,860 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 276 predicate places. [2024-06-28 04:25:36,860 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 429 transitions, 6021 flow [2024-06-28 04:25:36,860 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 04:25:36,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:36,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:25:36,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 04:25:36,860 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:25:36,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:36,861 INFO L85 PathProgramCache]: Analyzing trace with hash 572135658, now seen corresponding path program 4 times [2024-06-28 04:25:36,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:36,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593393355] [2024-06-28 04:25:36,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:36,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:36,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:25:37,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:25:37,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:25:37,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593393355] [2024-06-28 04:25:37,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593393355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:25:37,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:25:37,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:25:37,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736273757] [2024-06-28 04:25:37,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:25:37,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:25:37,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:25:37,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:25:37,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:25:37,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:25:37,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 429 transitions, 6021 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 04:25:37,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:25:37,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:25:37,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:38,896 INFO L124 PetriNetUnfolderBase]: 3510/5662 cut-off events. [2024-06-28 04:25:38,896 INFO L125 PetriNetUnfolderBase]: For 427296/427296 co-relation queries the response was YES. [2024-06-28 04:25:38,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46059 conditions, 5662 events. 3510/5662 cut-off events. For 427296/427296 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 35564 event pairs, 802 based on Foata normal form. 2/5654 useless extension candidates. Maximal degree in co-relation 45913. Up to 5160 conditions per place. [2024-06-28 04:25:38,974 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 374 selfloop transitions, 92 changer transitions 0/471 dead transitions. [2024-06-28 04:25:38,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 471 transitions, 7875 flow [2024-06-28 04:25:38,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:25:38,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:25:38,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-28 04:25:38,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2024-06-28 04:25:38,975 INFO L175 Difference]: Start difference. First operand has 318 places, 429 transitions, 6021 flow. Second operand 8 states and 156 transitions. [2024-06-28 04:25:38,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 471 transitions, 7875 flow [2024-06-28 04:25:40,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 471 transitions, 7511 flow, removed 16 selfloop flow, removed 12 redundant places. [2024-06-28 04:25:40,442 INFO L231 Difference]: Finished difference. Result has 315 places, 445 transitions, 6250 flow [2024-06-28 04:25:40,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5657, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6250, PETRI_PLACES=315, PETRI_TRANSITIONS=445} [2024-06-28 04:25:40,443 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 273 predicate places. [2024-06-28 04:25:40,443 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 445 transitions, 6250 flow [2024-06-28 04:25:40,443 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 04:25:40,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:40,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:25:40,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 04:25:40,443 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:25:40,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:40,443 INFO L85 PathProgramCache]: Analyzing trace with hash 278730752, now seen corresponding path program 5 times [2024-06-28 04:25:40,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:40,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909481727] [2024-06-28 04:25:40,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:40,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:25:41,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:25:41,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:25:41,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909481727] [2024-06-28 04:25:41,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909481727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:25:41,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:25:41,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:25:41,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626130023] [2024-06-28 04:25:41,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:25:41,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:25:41,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:25:41,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:25:41,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:25:41,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:25:41,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 445 transitions, 6250 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 04:25:41,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:25:41,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:25:41,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:42,455 INFO L124 PetriNetUnfolderBase]: 3530/5696 cut-off events. [2024-06-28 04:25:42,455 INFO L125 PetriNetUnfolderBase]: For 439421/439421 co-relation queries the response was YES. [2024-06-28 04:25:42,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45856 conditions, 5696 events. 3530/5696 cut-off events. For 439421/439421 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 35897 event pairs, 807 based on Foata normal form. 2/5688 useless extension candidates. Maximal degree in co-relation 45712. Up to 5341 conditions per place. [2024-06-28 04:25:42,533 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 399 selfloop transitions, 67 changer transitions 0/471 dead transitions. [2024-06-28 04:25:42,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 471 transitions, 7400 flow [2024-06-28 04:25:42,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:25:42,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:25:42,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 04:25:42,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4481707317073171 [2024-06-28 04:25:42,534 INFO L175 Difference]: Start difference. First operand has 315 places, 445 transitions, 6250 flow. Second operand 8 states and 147 transitions. [2024-06-28 04:25:42,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 471 transitions, 7400 flow [2024-06-28 04:25:44,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 471 transitions, 7231 flow, removed 72 selfloop flow, removed 2 redundant places. [2024-06-28 04:25:44,177 INFO L231 Difference]: Finished difference. Result has 321 places, 453 transitions, 6363 flow [2024-06-28 04:25:44,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6103, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6363, PETRI_PLACES=321, PETRI_TRANSITIONS=453} [2024-06-28 04:25:44,178 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 279 predicate places. [2024-06-28 04:25:44,178 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 453 transitions, 6363 flow [2024-06-28 04:25:44,178 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 04:25:44,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:44,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:25:44,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 04:25:44,179 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:25:44,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:44,179 INFO L85 PathProgramCache]: Analyzing trace with hash 201242544, now seen corresponding path program 4 times [2024-06-28 04:25:44,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:44,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114592647] [2024-06-28 04:25:44,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:44,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:44,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:25:44,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:25:44,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:25:44,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114592647] [2024-06-28 04:25:44,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114592647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:25:44,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:25:44,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:25:44,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358833842] [2024-06-28 04:25:44,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:25:44,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:25:44,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:25:44,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:25:44,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:25:44,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:25:44,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 453 transitions, 6363 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 04:25:44,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:25:44,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:25:44,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:46,120 INFO L124 PetriNetUnfolderBase]: 3574/5765 cut-off events. [2024-06-28 04:25:46,120 INFO L125 PetriNetUnfolderBase]: For 463372/463372 co-relation queries the response was YES. [2024-06-28 04:25:46,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46728 conditions, 5765 events. 3574/5765 cut-off events. For 463372/463372 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 36411 event pairs, 807 based on Foata normal form. 4/5759 useless extension candidates. Maximal degree in co-relation 46582. Up to 5258 conditions per place. [2024-06-28 04:25:46,203 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 396 selfloop transitions, 83 changer transitions 0/484 dead transitions. [2024-06-28 04:25:46,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 484 transitions, 7914 flow [2024-06-28 04:25:46,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:25:46,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:25:46,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-28 04:25:46,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4725609756097561 [2024-06-28 04:25:46,204 INFO L175 Difference]: Start difference. First operand has 321 places, 453 transitions, 6363 flow. Second operand 8 states and 155 transitions. [2024-06-28 04:25:46,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 484 transitions, 7914 flow [2024-06-28 04:25:48,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 484 transitions, 7745 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-28 04:25:48,141 INFO L231 Difference]: Finished difference. Result has 325 places, 459 transitions, 6525 flow [2024-06-28 04:25:48,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6194, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6525, PETRI_PLACES=325, PETRI_TRANSITIONS=459} [2024-06-28 04:25:48,142 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 283 predicate places. [2024-06-28 04:25:48,142 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 459 transitions, 6525 flow [2024-06-28 04:25:48,142 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 04:25:48,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:48,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:25:48,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 04:25:48,142 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:25:48,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:48,143 INFO L85 PathProgramCache]: Analyzing trace with hash 457622898, now seen corresponding path program 6 times [2024-06-28 04:25:48,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:48,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009585124] [2024-06-28 04:25:48,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:48,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:25:48,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:25:48,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:25:48,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009585124] [2024-06-28 04:25:48,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009585124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:25:48,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:25:48,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:25:48,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635370105] [2024-06-28 04:25:48,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:25:48,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:25:48,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:25:48,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:25:48,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:25:48,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:25:48,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 459 transitions, 6525 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 04:25:48,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:25:48,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:25:48,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:50,091 INFO L124 PetriNetUnfolderBase]: 3584/5777 cut-off events. [2024-06-28 04:25:50,092 INFO L125 PetriNetUnfolderBase]: For 473135/473135 co-relation queries the response was YES. [2024-06-28 04:25:50,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47405 conditions, 5777 events. 3584/5777 cut-off events. For 473135/473135 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 36464 event pairs, 815 based on Foata normal form. 2/5769 useless extension candidates. Maximal degree in co-relation 47258. Up to 5247 conditions per place. [2024-06-28 04:25:50,172 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 371 selfloop transitions, 110 changer transitions 0/486 dead transitions. [2024-06-28 04:25:50,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 486 transitions, 7991 flow [2024-06-28 04:25:50,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:25:50,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:25:50,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 04:25:50,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4695121951219512 [2024-06-28 04:25:50,173 INFO L175 Difference]: Start difference. First operand has 325 places, 459 transitions, 6525 flow. Second operand 8 states and 154 transitions. [2024-06-28 04:25:50,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 486 transitions, 7991 flow [2024-06-28 04:25:52,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 486 transitions, 7773 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-28 04:25:52,073 INFO L231 Difference]: Finished difference. Result has 328 places, 462 transitions, 6604 flow [2024-06-28 04:25:52,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6307, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6604, PETRI_PLACES=328, PETRI_TRANSITIONS=462} [2024-06-28 04:25:52,073 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 286 predicate places. [2024-06-28 04:25:52,074 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 462 transitions, 6604 flow [2024-06-28 04:25:52,074 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 04:25:52,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:52,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:25:52,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 04:25:52,074 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:25:52,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:52,074 INFO L85 PathProgramCache]: Analyzing trace with hash 535469342, now seen corresponding path program 7 times [2024-06-28 04:25:52,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:52,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358407443] [2024-06-28 04:25:52,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:52,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:25:52,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:25:52,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:25:52,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358407443] [2024-06-28 04:25:52,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358407443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:25:52,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:25:52,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:25:52,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866616768] [2024-06-28 04:25:52,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:25:52,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:25:52,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:25:52,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:25:52,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:25:52,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:25:52,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 462 transitions, 6604 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 04:25:52,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:25:52,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:25:52,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:54,184 INFO L124 PetriNetUnfolderBase]: 3594/5795 cut-off events. [2024-06-28 04:25:54,185 INFO L125 PetriNetUnfolderBase]: For 478476/478476 co-relation queries the response was YES. [2024-06-28 04:25:54,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47286 conditions, 5795 events. 3594/5795 cut-off events. For 478476/478476 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 36634 event pairs, 815 based on Foata normal form. 2/5787 useless extension candidates. Maximal degree in co-relation 47138. Up to 5257 conditions per place. [2024-06-28 04:25:54,270 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 363 selfloop transitions, 118 changer transitions 0/486 dead transitions. [2024-06-28 04:25:54,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 486 transitions, 7941 flow [2024-06-28 04:25:54,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:25:54,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:25:54,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 04:25:54,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573170731707317 [2024-06-28 04:25:54,271 INFO L175 Difference]: Start difference. First operand has 328 places, 462 transitions, 6604 flow. Second operand 8 states and 150 transitions. [2024-06-28 04:25:54,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 486 transitions, 7941 flow [2024-06-28 04:25:55,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 486 transitions, 7646 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 04:25:55,844 INFO L231 Difference]: Finished difference. Result has 330 places, 466 transitions, 6658 flow [2024-06-28 04:25:55,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6320, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6658, PETRI_PLACES=330, PETRI_TRANSITIONS=466} [2024-06-28 04:25:55,844 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 288 predicate places. [2024-06-28 04:25:55,845 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 466 transitions, 6658 flow [2024-06-28 04:25:55,845 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 04:25:55,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:55,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:25:55,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 04:25:55,845 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:25:55,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:55,845 INFO L85 PathProgramCache]: Analyzing trace with hash 585472974, now seen corresponding path program 5 times [2024-06-28 04:25:55,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:55,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206724648] [2024-06-28 04:25:55,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:55,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:25:56,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:25:56,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:25:56,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206724648] [2024-06-28 04:25:56,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206724648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:25:56,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:25:56,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:25:56,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862686584] [2024-06-28 04:25:56,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:25:56,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:25:56,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:25:56,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:25:56,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:25:56,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:25:56,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 466 transitions, 6658 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 04:25:56,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:25:56,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:25:56,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:57,843 INFO L124 PetriNetUnfolderBase]: 3614/5831 cut-off events. [2024-06-28 04:25:57,843 INFO L125 PetriNetUnfolderBase]: For 497743/497743 co-relation queries the response was YES. [2024-06-28 04:25:57,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47517 conditions, 5831 events. 3614/5831 cut-off events. For 497743/497743 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 36991 event pairs, 844 based on Foata normal form. 4/5832 useless extension candidates. Maximal degree in co-relation 47369. Up to 5551 conditions per place. [2024-06-28 04:25:57,925 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 455 selfloop transitions, 27 changer transitions 0/487 dead transitions. [2024-06-28 04:25:57,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 487 transitions, 7777 flow [2024-06-28 04:25:57,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:25:57,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:25:57,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 04:25:57,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43597560975609756 [2024-06-28 04:25:57,926 INFO L175 Difference]: Start difference. First operand has 330 places, 466 transitions, 6658 flow. Second operand 8 states and 143 transitions. [2024-06-28 04:25:57,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 487 transitions, 7777 flow [2024-06-28 04:25:59,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 487 transitions, 7551 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-06-28 04:25:59,961 INFO L231 Difference]: Finished difference. Result has 335 places, 470 transitions, 6579 flow [2024-06-28 04:25:59,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6434, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6579, PETRI_PLACES=335, PETRI_TRANSITIONS=470} [2024-06-28 04:25:59,961 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 293 predicate places. [2024-06-28 04:25:59,961 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 470 transitions, 6579 flow [2024-06-28 04:25:59,961 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 04:25:59,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:59,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:25:59,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 04:25:59,962 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:25:59,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:59,962 INFO L85 PathProgramCache]: Analyzing trace with hash 585027318, now seen corresponding path program 8 times [2024-06-28 04:25:59,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:59,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971067057] [2024-06-28 04:25:59,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:59,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:26:00,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:26:00,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:26:00,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971067057] [2024-06-28 04:26:00,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971067057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:26:00,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:26:00,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:26:00,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115108535] [2024-06-28 04:26:00,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:26:00,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:26:00,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:26:00,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:26:00,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:26:00,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:26:00,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 470 transitions, 6579 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 04:26:00,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:26:00,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:26:00,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:26:02,078 INFO L124 PetriNetUnfolderBase]: 3650/5893 cut-off events. [2024-06-28 04:26:02,078 INFO L125 PetriNetUnfolderBase]: For 508999/508999 co-relation queries the response was YES. [2024-06-28 04:26:02,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47993 conditions, 5893 events. 3650/5893 cut-off events. For 508999/508999 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 37485 event pairs, 817 based on Foata normal form. 2/5887 useless extension candidates. Maximal degree in co-relation 47843. Up to 5476 conditions per place. [2024-06-28 04:26:02,160 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 413 selfloop transitions, 86 changer transitions 0/504 dead transitions. [2024-06-28 04:26:02,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 504 transitions, 8090 flow [2024-06-28 04:26:02,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:26:02,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:26:02,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-28 04:26:02,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292682926829268 [2024-06-28 04:26:02,162 INFO L175 Difference]: Start difference. First operand has 335 places, 470 transitions, 6579 flow. Second operand 10 states and 176 transitions. [2024-06-28 04:26:02,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 504 transitions, 8090 flow [2024-06-28 04:26:03,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 504 transitions, 7986 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-28 04:26:03,792 INFO L231 Difference]: Finished difference. Result has 342 places, 482 transitions, 6916 flow [2024-06-28 04:26:03,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6475, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6916, PETRI_PLACES=342, PETRI_TRANSITIONS=482} [2024-06-28 04:26:03,792 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 300 predicate places. [2024-06-28 04:26:03,792 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 482 transitions, 6916 flow [2024-06-28 04:26:03,792 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 04:26:03,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:26:03,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:26:03,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 04:26:03,793 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:26:03,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:26:03,793 INFO L85 PathProgramCache]: Analyzing trace with hash 662782622, now seen corresponding path program 9 times [2024-06-28 04:26:03,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:26:03,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195679806] [2024-06-28 04:26:03,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:26:03,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:26:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:26:04,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:26:04,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:26:04,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195679806] [2024-06-28 04:26:04,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195679806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:26:04,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:26:04,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:26:04,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904175589] [2024-06-28 04:26:04,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:26:04,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:26:04,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:26:04,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:26:04,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:26:04,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:26:04,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 482 transitions, 6916 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 04:26:04,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:26:04,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:26:04,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:26:05,859 INFO L124 PetriNetUnfolderBase]: 3644/5885 cut-off events. [2024-06-28 04:26:05,859 INFO L125 PetriNetUnfolderBase]: For 513555/513555 co-relation queries the response was YES. [2024-06-28 04:26:05,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47976 conditions, 5885 events. 3644/5885 cut-off events. For 513555/513555 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 37401 event pairs, 818 based on Foata normal form. 2/5879 useless extension candidates. Maximal degree in co-relation 47823. Up to 5471 conditions per place. [2024-06-28 04:26:05,937 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 409 selfloop transitions, 85 changer transitions 0/499 dead transitions. [2024-06-28 04:26:05,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 499 transitions, 7998 flow [2024-06-28 04:26:05,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:26:05,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:26:05,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 04:26:05,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420731707317073 [2024-06-28 04:26:05,938 INFO L175 Difference]: Start difference. First operand has 342 places, 482 transitions, 6916 flow. Second operand 8 states and 145 transitions. [2024-06-28 04:26:05,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 499 transitions, 7998 flow [2024-06-28 04:26:07,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 499 transitions, 7747 flow, removed 71 selfloop flow, removed 5 redundant places. [2024-06-28 04:26:07,570 INFO L231 Difference]: Finished difference. Result has 345 places, 482 transitions, 6841 flow [2024-06-28 04:26:07,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6665, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6841, PETRI_PLACES=345, PETRI_TRANSITIONS=482} [2024-06-28 04:26:07,570 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 303 predicate places. [2024-06-28 04:26:07,570 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 482 transitions, 6841 flow [2024-06-28 04:26:07,571 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 04:26:07,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:26:07,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:26:07,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 04:26:07,571 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:26:07,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:26:07,571 INFO L85 PathProgramCache]: Analyzing trace with hash 662515898, now seen corresponding path program 6 times [2024-06-28 04:26:07,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:26:07,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900375743] [2024-06-28 04:26:07,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:26:07,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:26:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:26:08,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:26:08,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:26:08,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900375743] [2024-06-28 04:26:08,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900375743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:26:08,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:26:08,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:26:08,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472310784] [2024-06-28 04:26:08,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:26:08,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:26:08,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:26:08,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:26:08,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:26:08,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:26:08,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 482 transitions, 6841 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 04:26:08,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:26:08,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:26:08,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:26:09,511 INFO L124 PetriNetUnfolderBase]: 3664/5921 cut-off events. [2024-06-28 04:26:09,512 INFO L125 PetriNetUnfolderBase]: For 532153/532153 co-relation queries the response was YES. [2024-06-28 04:26:09,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48236 conditions, 5921 events. 3664/5921 cut-off events. For 532153/532153 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 37745 event pairs, 814 based on Foata normal form. 4/5917 useless extension candidates. Maximal degree in co-relation 48083. Up to 5352 conditions per place. [2024-06-28 04:26:09,594 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 413 selfloop transitions, 92 changer transitions 0/510 dead transitions. [2024-06-28 04:26:09,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 510 transitions, 8246 flow [2024-06-28 04:26:09,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:26:09,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:26:09,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 04:26:09,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46646341463414637 [2024-06-28 04:26:09,595 INFO L175 Difference]: Start difference. First operand has 345 places, 482 transitions, 6841 flow. Second operand 8 states and 153 transitions. [2024-06-28 04:26:09,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 510 transitions, 8246 flow [2024-06-28 04:26:11,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 510 transitions, 8076 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 04:26:11,516 INFO L231 Difference]: Finished difference. Result has 346 places, 485 transitions, 6932 flow [2024-06-28 04:26:11,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6671, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6932, PETRI_PLACES=346, PETRI_TRANSITIONS=485} [2024-06-28 04:26:11,516 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 304 predicate places. [2024-06-28 04:26:11,517 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 485 transitions, 6932 flow [2024-06-28 04:26:11,517 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 04:26:11,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:26:11,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:26:11,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 04:26:11,517 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:26:11,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:26:11,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1491475524, now seen corresponding path program 10 times [2024-06-28 04:26:11,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:26:11,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078069864] [2024-06-28 04:26:11,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:26:11,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:26:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:26:12,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:26:12,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:26:12,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078069864] [2024-06-28 04:26:12,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078069864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:26:12,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:26:12,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:26:12,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935563825] [2024-06-28 04:26:12,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:26:12,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:26:12,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:26:12,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:26:12,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:26:12,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:26:12,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 485 transitions, 6932 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 04:26:12,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:26:12,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:26:12,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:26:13,481 INFO L124 PetriNetUnfolderBase]: 3658/5913 cut-off events. [2024-06-28 04:26:13,481 INFO L125 PetriNetUnfolderBase]: For 530219/530219 co-relation queries the response was YES. [2024-06-28 04:26:13,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48253 conditions, 5913 events. 3658/5913 cut-off events. For 530219/530219 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 37712 event pairs, 821 based on Foata normal form. 2/5907 useless extension candidates. Maximal degree in co-relation 48099. Up to 5429 conditions per place. [2024-06-28 04:26:13,565 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 411 selfloop transitions, 92 changer transitions 0/508 dead transitions. [2024-06-28 04:26:13,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 508 transitions, 8224 flow [2024-06-28 04:26:13,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:26:13,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:26:13,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-28 04:26:13,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4808362369337979 [2024-06-28 04:26:13,566 INFO L175 Difference]: Start difference. First operand has 346 places, 485 transitions, 6932 flow. Second operand 7 states and 138 transitions. [2024-06-28 04:26:13,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 508 transitions, 8224 flow [2024-06-28 04:26:15,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 508 transitions, 7994 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-28 04:26:15,664 INFO L231 Difference]: Finished difference. Result has 348 places, 485 transitions, 6898 flow [2024-06-28 04:26:15,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6702, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6898, PETRI_PLACES=348, PETRI_TRANSITIONS=485} [2024-06-28 04:26:15,665 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 306 predicate places. [2024-06-28 04:26:15,665 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 485 transitions, 6898 flow [2024-06-28 04:26:15,665 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 04:26:15,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:26:15,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:26:15,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 04:26:15,666 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:26:15,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:26:15,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1491296778, now seen corresponding path program 7 times [2024-06-28 04:26:15,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:26:15,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892837827] [2024-06-28 04:26:15,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:26:15,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:26:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:26:16,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:26:16,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:26:16,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892837827] [2024-06-28 04:26:16,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892837827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:26:16,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:26:16,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:26:16,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960037298] [2024-06-28 04:26:16,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:26:16,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:26:16,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:26:16,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:26:16,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:26:16,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:26:16,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 485 transitions, 6898 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 04:26:16,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:26:16,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:26:16,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:26:17,915 INFO L124 PetriNetUnfolderBase]: 3688/5953 cut-off events. [2024-06-28 04:26:17,916 INFO L125 PetriNetUnfolderBase]: For 549225/549225 co-relation queries the response was YES. [2024-06-28 04:26:17,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48566 conditions, 5953 events. 3688/5953 cut-off events. For 549225/549225 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 37919 event pairs, 841 based on Foata normal form. 4/5954 useless extension candidates. Maximal degree in co-relation 48411. Up to 5635 conditions per place. [2024-06-28 04:26:17,988 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 469 selfloop transitions, 33 changer transitions 0/507 dead transitions. [2024-06-28 04:26:17,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 507 transitions, 8091 flow [2024-06-28 04:26:17,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:26:17,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:26:17,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 04:26:17,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44947735191637633 [2024-06-28 04:26:17,989 INFO L175 Difference]: Start difference. First operand has 348 places, 485 transitions, 6898 flow. Second operand 7 states and 129 transitions. [2024-06-28 04:26:17,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 507 transitions, 8091 flow [2024-06-28 04:26:20,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 507 transitions, 7838 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 04:26:20,419 INFO L231 Difference]: Finished difference. Result has 346 places, 491 transitions, 6838 flow [2024-06-28 04:26:20,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6645, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6838, PETRI_PLACES=346, PETRI_TRANSITIONS=491} [2024-06-28 04:26:20,419 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 304 predicate places. [2024-06-28 04:26:20,419 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 491 transitions, 6838 flow [2024-06-28 04:26:20,420 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 04:26:20,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:26:20,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:26:20,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 04:26:20,420 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:26:20,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:26:20,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1491742248, now seen corresponding path program 8 times [2024-06-28 04:26:20,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:26:20,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763227669] [2024-06-28 04:26:20,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:26:20,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:26:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:26:21,078 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 04:26:21,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:26:21,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763227669] [2024-06-28 04:26:21,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763227669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:26:21,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:26:21,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:26:21,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466550484] [2024-06-28 04:26:21,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:26:21,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:26:21,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:26:21,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:26:21,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:26:21,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:26:21,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 491 transitions, 6838 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 04:26:21,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:26:21,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:26:21,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:26:22,392 INFO L124 PetriNetUnfolderBase]: 3708/5981 cut-off events. [2024-06-28 04:26:22,392 INFO L125 PetriNetUnfolderBase]: For 547862/547862 co-relation queries the response was YES. [2024-06-28 04:26:22,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48643 conditions, 5981 events. 3708/5981 cut-off events. For 547862/547862 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 38061 event pairs, 801 based on Foata normal form. 4/5975 useless extension candidates. Maximal degree in co-relation 48490. Up to 5382 conditions per place. [2024-06-28 04:26:22,478 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 409 selfloop transitions, 103 changer transitions 0/517 dead transitions. [2024-06-28 04:26:22,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 517 transitions, 8405 flow [2024-06-28 04:26:22,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:26:22,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:26:22,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-28 04:26:22,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2024-06-28 04:26:22,480 INFO L175 Difference]: Start difference. First operand has 346 places, 491 transitions, 6838 flow. Second operand 7 states and 140 transitions. [2024-06-28 04:26:22,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 517 transitions, 8405 flow [2024-06-28 04:26:24,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 517 transitions, 8295 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-28 04:26:24,905 INFO L231 Difference]: Finished difference. Result has 350 places, 494 transitions, 7034 flow [2024-06-28 04:26:24,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6738, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7034, PETRI_PLACES=350, PETRI_TRANSITIONS=494} [2024-06-28 04:26:24,906 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 308 predicate places. [2024-06-28 04:26:24,906 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 494 transitions, 7034 flow [2024-06-28 04:26:24,906 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 04:26:24,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:26:24,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:26:24,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 04:26:24,906 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:26:24,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:26:24,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1491742434, now seen corresponding path program 11 times [2024-06-28 04:26:24,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:26:24,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774730937] [2024-06-28 04:26:24,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:26:24,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:26:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:26:25,583 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 04:26:25,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:26:25,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774730937] [2024-06-28 04:26:25,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774730937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:26:25,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:26:25,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:26:25,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071745308] [2024-06-28 04:26:25,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:26:25,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:26:25,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:26:25,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:26:25,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:26:25,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:26:25,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 494 transitions, 7034 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 04:26:25,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:26:25,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:26:25,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:26:26,945 INFO L124 PetriNetUnfolderBase]: 3702/5987 cut-off events. [2024-06-28 04:26:26,945 INFO L125 PetriNetUnfolderBase]: For 533680/533680 co-relation queries the response was YES. [2024-06-28 04:26:27,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48554 conditions, 5987 events. 3702/5987 cut-off events. For 533680/533680 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 38284 event pairs, 828 based on Foata normal form. 2/5979 useless extension candidates. Maximal degree in co-relation 48400. Up to 5494 conditions per place. [2024-06-28 04:26:27,032 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 427 selfloop transitions, 86 changer transitions 0/518 dead transitions. [2024-06-28 04:26:27,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 518 transitions, 8366 flow [2024-06-28 04:26:27,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:26:27,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:26:27,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-28 04:26:27,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4843205574912892 [2024-06-28 04:26:27,033 INFO L175 Difference]: Start difference. First operand has 350 places, 494 transitions, 7034 flow. Second operand 7 states and 139 transitions. [2024-06-28 04:26:27,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 518 transitions, 8366 flow [2024-06-28 04:26:29,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 518 transitions, 8078 flow, removed 58 selfloop flow, removed 7 redundant places. [2024-06-28 04:26:29,609 INFO L231 Difference]: Finished difference. Result has 350 places, 494 transitions, 6939 flow [2024-06-28 04:26:29,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6750, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6939, PETRI_PLACES=350, PETRI_TRANSITIONS=494} [2024-06-28 04:26:29,609 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 308 predicate places. [2024-06-28 04:26:29,609 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 494 transitions, 6939 flow [2024-06-28 04:26:29,610 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 04:26:29,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:26:29,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:26:29,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 04:26:29,610 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:26:29,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:26:29,610 INFO L85 PathProgramCache]: Analyzing trace with hash -919753528, now seen corresponding path program 9 times [2024-06-28 04:26:29,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:26:29,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775682849] [2024-06-28 04:26:29,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:26:29,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:26:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:26:30,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:26:30,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:26:30,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775682849] [2024-06-28 04:26:30,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775682849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:26:30,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:26:30,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:26:30,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572036794] [2024-06-28 04:26:30,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:26:30,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:26:30,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:26:30,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:26:30,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:26:30,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:26:30,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 494 transitions, 6939 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 04:26:30,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:26:30,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:26:30,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:26:31,666 INFO L124 PetriNetUnfolderBase]: 3722/6016 cut-off events. [2024-06-28 04:26:31,666 INFO L125 PetriNetUnfolderBase]: For 530807/530807 co-relation queries the response was YES. [2024-06-28 04:26:31,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48378 conditions, 6016 events. 3722/6016 cut-off events. For 530807/530807 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 38431 event pairs, 818 based on Foata normal form. 4/6017 useless extension candidates. Maximal degree in co-relation 48226. Up to 5647 conditions per place. [2024-06-28 04:26:31,752 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 459 selfloop transitions, 53 changer transitions 0/517 dead transitions. [2024-06-28 04:26:31,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 517 transitions, 8140 flow [2024-06-28 04:26:31,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:26:31,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:26:31,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-28 04:26:31,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.491869918699187 [2024-06-28 04:26:31,753 INFO L175 Difference]: Start difference. First operand has 350 places, 494 transitions, 6939 flow. Second operand 6 states and 121 transitions. [2024-06-28 04:26:31,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 517 transitions, 8140 flow [2024-06-28 04:26:33,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 517 transitions, 7998 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 04:26:33,938 INFO L231 Difference]: Finished difference. Result has 352 places, 499 transitions, 7063 flow [2024-06-28 04:26:33,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6797, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7063, PETRI_PLACES=352, PETRI_TRANSITIONS=499} [2024-06-28 04:26:33,938 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 310 predicate places. [2024-06-28 04:26:33,938 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 499 transitions, 7063 flow [2024-06-28 04:26:33,938 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 04:26:33,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:26:33,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:26:33,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 04:26:33,939 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:26:33,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:26:33,939 INFO L85 PathProgramCache]: Analyzing trace with hash -841662592, now seen corresponding path program 10 times [2024-06-28 04:26:33,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:26:33,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682619451] [2024-06-28 04:26:33,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:26:33,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:26:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:26:34,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:26:34,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:26:34,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682619451] [2024-06-28 04:26:34,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682619451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:26:34,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:26:34,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:26:34,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469471099] [2024-06-28 04:26:34,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:26:34,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:26:34,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:26:34,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:26:34,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:26:34,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:26:34,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 499 transitions, 7063 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 04:26:34,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:26:34,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:26:34,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:26:35,866 INFO L124 PetriNetUnfolderBase]: 3742/6040 cut-off events. [2024-06-28 04:26:35,867 INFO L125 PetriNetUnfolderBase]: For 533674/533674 co-relation queries the response was YES. [2024-06-28 04:26:35,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48691 conditions, 6040 events. 3742/6040 cut-off events. For 533674/533674 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 38573 event pairs, 812 based on Foata normal form. 4/6041 useless extension candidates. Maximal degree in co-relation 48538. Up to 5701 conditions per place. [2024-06-28 04:26:35,951 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 469 selfloop transitions, 44 changer transitions 0/518 dead transitions. [2024-06-28 04:26:35,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 518 transitions, 8246 flow [2024-06-28 04:26:35,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:26:35,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:26:35,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-28 04:26:35,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4529616724738676 [2024-06-28 04:26:35,952 INFO L175 Difference]: Start difference. First operand has 352 places, 499 transitions, 7063 flow. Second operand 7 states and 130 transitions. [2024-06-28 04:26:35,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 518 transitions, 8246 flow [2024-06-28 04:26:38,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 518 transitions, 8143 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-28 04:26:38,050 INFO L231 Difference]: Finished difference. Result has 356 places, 502 transitions, 7149 flow [2024-06-28 04:26:38,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6960, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7149, PETRI_PLACES=356, PETRI_TRANSITIONS=502} [2024-06-28 04:26:38,050 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 314 predicate places. [2024-06-28 04:26:38,050 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 502 transitions, 7149 flow [2024-06-28 04:26:38,050 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 04:26:38,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:26:38,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:26:38,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 04:26:38,050 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:26:38,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:26:38,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1698395874, now seen corresponding path program 12 times [2024-06-28 04:26:38,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:26:38,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992826422] [2024-06-28 04:26:38,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:26:38,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:26:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:26:38,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:26:38,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:26:38,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992826422] [2024-06-28 04:26:38,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992826422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:26:38,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:26:38,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:26:38,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707536727] [2024-06-28 04:26:38,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:26:38,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:26:38,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:26:38,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:26:38,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:26:38,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:26:38,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 502 transitions, 7149 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 04:26:38,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:26:38,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:26:38,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:26:40,194 INFO L124 PetriNetUnfolderBase]: 3736/6040 cut-off events. [2024-06-28 04:26:40,194 INFO L125 PetriNetUnfolderBase]: For 530819/530819 co-relation queries the response was YES. [2024-06-28 04:26:40,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48497 conditions, 6040 events. 3736/6040 cut-off events. For 530819/530819 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 38594 event pairs, 817 based on Foata normal form. 2/6039 useless extension candidates. Maximal degree in co-relation 48343. Up to 5652 conditions per place. [2024-06-28 04:26:40,280 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 463 selfloop transitions, 56 changer transitions 0/524 dead transitions. [2024-06-28 04:26:40,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 524 transitions, 8288 flow [2024-06-28 04:26:40,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:26:40,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:26:40,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-28 04:26:40,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4738675958188153 [2024-06-28 04:26:40,281 INFO L175 Difference]: Start difference. First operand has 356 places, 502 transitions, 7149 flow. Second operand 7 states and 136 transitions. [2024-06-28 04:26:40,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 524 transitions, 8288 flow [2024-06-28 04:26:42,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 524 transitions, 8050 flow, removed 71 selfloop flow, removed 5 redundant places. [2024-06-28 04:26:42,126 INFO L231 Difference]: Finished difference. Result has 358 places, 502 transitions, 7045 flow [2024-06-28 04:26:42,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6911, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7045, PETRI_PLACES=358, PETRI_TRANSITIONS=502} [2024-06-28 04:26:42,127 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 316 predicate places. [2024-06-28 04:26:42,127 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 502 transitions, 7045 flow [2024-06-28 04:26:42,127 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 04:26:42,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:26:42,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:26:42,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 04:26:42,127 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:26:42,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:26:42,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1088609692, now seen corresponding path program 11 times [2024-06-28 04:26:42,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:26:42,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410703282] [2024-06-28 04:26:42,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:26:42,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:26:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:26:42,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:26:42,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:26:42,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410703282] [2024-06-28 04:26:42,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410703282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:26:42,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:26:42,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:26:42,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028895190] [2024-06-28 04:26:42,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:26:42,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:26:42,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:26:42,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:26:42,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:26:43,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:26:43,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 502 transitions, 7045 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 04:26:43,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:26:43,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:26:43,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:26:44,307 INFO L124 PetriNetUnfolderBase]: 3724/6020 cut-off events. [2024-06-28 04:26:44,307 INFO L125 PetriNetUnfolderBase]: For 521396/521396 co-relation queries the response was YES. [2024-06-28 04:26:44,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47756 conditions, 6020 events. 3724/6020 cut-off events. For 521396/521396 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 38500 event pairs, 802 based on Foata normal form. 4/6021 useless extension candidates. Maximal degree in co-relation 47602. Up to 5576 conditions per place. [2024-06-28 04:26:44,390 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 436 selfloop transitions, 85 changer transitions 0/526 dead transitions. [2024-06-28 04:26:44,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 526 transitions, 8211 flow [2024-06-28 04:26:44,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:26:44,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:26:44,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-28 04:26:44,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49825783972125437 [2024-06-28 04:26:44,391 INFO L175 Difference]: Start difference. First operand has 358 places, 502 transitions, 7045 flow. Second operand 7 states and 143 transitions. [2024-06-28 04:26:44,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 526 transitions, 8211 flow [2024-06-28 04:26:46,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 526 transitions, 8076 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 04:26:46,477 INFO L231 Difference]: Finished difference. Result has 360 places, 502 transitions, 7107 flow [2024-06-28 04:26:46,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6910, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7107, PETRI_PLACES=360, PETRI_TRANSITIONS=502} [2024-06-28 04:26:46,477 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 318 predicate places. [2024-06-28 04:26:46,477 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 502 transitions, 7107 flow [2024-06-28 04:26:46,478 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 04:26:46,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:26:46,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:26:46,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 04:26:46,478 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:26:46,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:26:46,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1698395688, now seen corresponding path program 12 times [2024-06-28 04:26:46,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:26:46,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618568349] [2024-06-28 04:26:46,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:26:46,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:26:46,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:26:47,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:26:47,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:26:47,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618568349] [2024-06-28 04:26:47,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618568349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:26:47,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:26:47,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:26:47,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460668607] [2024-06-28 04:26:47,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:26:47,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:26:47,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:26:47,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:26:47,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:26:47,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:26:47,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 502 transitions, 7107 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 04:26:47,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:26:47,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:26:47,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:26:48,491 INFO L124 PetriNetUnfolderBase]: 3712/5996 cut-off events. [2024-06-28 04:26:48,491 INFO L125 PetriNetUnfolderBase]: For 507887/507887 co-relation queries the response was YES. [2024-06-28 04:26:48,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47295 conditions, 5996 events. 3712/5996 cut-off events. For 507887/507887 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 38315 event pairs, 806 based on Foata normal form. 4/5997 useless extension candidates. Maximal degree in co-relation 47140. Up to 5549 conditions per place. [2024-06-28 04:26:48,576 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 448 selfloop transitions, 70 changer transitions 0/523 dead transitions. [2024-06-28 04:26:48,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 523 transitions, 8253 flow [2024-06-28 04:26:48,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:26:48,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:26:48,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-28 04:26:48,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47735191637630664 [2024-06-28 04:26:48,577 INFO L175 Difference]: Start difference. First operand has 360 places, 502 transitions, 7107 flow. Second operand 7 states and 137 transitions. [2024-06-28 04:26:48,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 523 transitions, 8253 flow [2024-06-28 04:26:50,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 523 transitions, 8031 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 04:26:50,857 INFO L231 Difference]: Finished difference. Result has 361 places, 502 transitions, 7042 flow [2024-06-28 04:26:50,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6885, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7042, PETRI_PLACES=361, PETRI_TRANSITIONS=502} [2024-06-28 04:26:50,858 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 319 predicate places. [2024-06-28 04:26:50,858 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 502 transitions, 7042 flow [2024-06-28 04:26:50,858 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 04:26:50,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:26:50,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:26:50,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 04:26:50,858 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:26:50,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:26:50,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1698149610, now seen corresponding path program 2 times [2024-06-28 04:26:50,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:26:50,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811817709] [2024-06-28 04:26:50,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:26:50,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:26:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:26:51,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:26:51,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:26:51,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811817709] [2024-06-28 04:26:51,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811817709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:26:51,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:26:51,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:26:51,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311679281] [2024-06-28 04:26:51,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:26:51,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:26:51,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:26:51,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:26:51,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:26:51,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:26:51,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 502 transitions, 7042 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:26:51,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:26:51,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:26:51,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:26:53,502 INFO L124 PetriNetUnfolderBase]: 3756/6059 cut-off events. [2024-06-28 04:26:53,502 INFO L125 PetriNetUnfolderBase]: For 544248/544248 co-relation queries the response was YES. [2024-06-28 04:26:53,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47722 conditions, 6059 events. 3756/6059 cut-off events. For 544248/544248 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 38655 event pairs, 771 based on Foata normal form. 12/6068 useless extension candidates. Maximal degree in co-relation 47566. Up to 5534 conditions per place. [2024-06-28 04:26:53,589 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 451 selfloop transitions, 71 changer transitions 0/527 dead transitions. [2024-06-28 04:26:53,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 527 transitions, 8272 flow [2024-06-28 04:26:53,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:26:53,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:26:53,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-28 04:26:53,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47735191637630664 [2024-06-28 04:26:53,590 INFO L175 Difference]: Start difference. First operand has 361 places, 502 transitions, 7042 flow. Second operand 7 states and 137 transitions. [2024-06-28 04:26:53,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 527 transitions, 8272 flow [2024-06-28 04:26:55,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 527 transitions, 8114 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 04:26:55,441 INFO L231 Difference]: Finished difference. Result has 362 places, 503 transitions, 7050 flow [2024-06-28 04:26:55,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6884, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7050, PETRI_PLACES=362, PETRI_TRANSITIONS=503} [2024-06-28 04:26:55,442 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 320 predicate places. [2024-06-28 04:26:55,442 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 503 transitions, 7050 flow [2024-06-28 04:26:55,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:26:55,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:26:55,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:26:55,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 04:26:55,443 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:26:55,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:26:55,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1255320810, now seen corresponding path program 3 times [2024-06-28 04:26:55,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:26:55,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210961825] [2024-06-28 04:26:55,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:26:55,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:26:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:26:56,467 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 04:26:56,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:26:56,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210961825] [2024-06-28 04:26:56,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210961825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:26:56,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:26:56,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:26:56,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911831596] [2024-06-28 04:26:56,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:26:56,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:26:56,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:26:56,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:26:56,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:26:56,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:26:56,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 503 transitions, 7050 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:26:56,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:26:56,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:26:56,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:26:57,982 INFO L124 PetriNetUnfolderBase]: 3800/6147 cut-off events. [2024-06-28 04:26:57,982 INFO L125 PetriNetUnfolderBase]: For 535141/535141 co-relation queries the response was YES. [2024-06-28 04:26:58,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48089 conditions, 6147 events. 3800/6147 cut-off events. For 535141/535141 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 39466 event pairs, 679 based on Foata normal form. 12/6156 useless extension candidates. Maximal degree in co-relation 47933. Up to 5465 conditions per place. [2024-06-28 04:26:58,081 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 431 selfloop transitions, 92 changer transitions 0/528 dead transitions. [2024-06-28 04:26:58,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 528 transitions, 8272 flow [2024-06-28 04:26:58,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:26:58,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:26:58,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-06-28 04:26:58,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121951219512195 [2024-06-28 04:26:58,082 INFO L175 Difference]: Start difference. First operand has 362 places, 503 transitions, 7050 flow. Second operand 6 states and 126 transitions. [2024-06-28 04:26:58,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 528 transitions, 8272 flow [2024-06-28 04:26:59,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 528 transitions, 8126 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 04:26:59,853 INFO L231 Difference]: Finished difference. Result has 363 places, 504 transitions, 7155 flow [2024-06-28 04:26:59,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6906, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7155, PETRI_PLACES=363, PETRI_TRANSITIONS=504} [2024-06-28 04:26:59,854 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 321 predicate places. [2024-06-28 04:26:59,854 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 504 transitions, 7155 flow [2024-06-28 04:26:59,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:26:59,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:26:59,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:26:59,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 04:26:59,854 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:26:59,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:26:59,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1254815820, now seen corresponding path program 4 times [2024-06-28 04:26:59,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:26:59,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933319092] [2024-06-28 04:26:59,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:26:59,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:26:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:27:00,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:27:00,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:27:00,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933319092] [2024-06-28 04:27:00,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933319092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:27:00,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:27:00,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:27:00,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136393018] [2024-06-28 04:27:00,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:27:00,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:27:00,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:27:00,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:27:00,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:27:00,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:27:00,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 504 transitions, 7155 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:00,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:27:00,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:27:00,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:27:02,246 INFO L124 PetriNetUnfolderBase]: 3802/6153 cut-off events. [2024-06-28 04:27:02,246 INFO L125 PetriNetUnfolderBase]: For 508897/508897 co-relation queries the response was YES. [2024-06-28 04:27:02,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47974 conditions, 6153 events. 3802/6153 cut-off events. For 508897/508897 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 39528 event pairs, 671 based on Foata normal form. 8/6158 useless extension candidates. Maximal degree in co-relation 47817. Up to 5433 conditions per place. [2024-06-28 04:27:02,331 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 434 selfloop transitions, 95 changer transitions 0/534 dead transitions. [2024-06-28 04:27:02,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 534 transitions, 8447 flow [2024-06-28 04:27:02,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:27:02,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:27:02,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-28 04:27:02,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49825783972125437 [2024-06-28 04:27:02,333 INFO L175 Difference]: Start difference. First operand has 363 places, 504 transitions, 7155 flow. Second operand 7 states and 143 transitions. [2024-06-28 04:27:02,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 534 transitions, 8447 flow [2024-06-28 04:27:04,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 534 transitions, 8306 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 04:27:04,132 INFO L231 Difference]: Finished difference. Result has 366 places, 505 transitions, 7226 flow [2024-06-28 04:27:04,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7014, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7226, PETRI_PLACES=366, PETRI_TRANSITIONS=505} [2024-06-28 04:27:04,132 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 324 predicate places. [2024-06-28 04:27:04,132 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 505 transitions, 7226 flow [2024-06-28 04:27:04,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:04,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:27:04,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:27:04,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 04:27:04,133 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:27:04,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:27:04,133 INFO L85 PathProgramCache]: Analyzing trace with hash 544644412, now seen corresponding path program 1 times [2024-06-28 04:27:04,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:27:04,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688369484] [2024-06-28 04:27:04,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:27:04,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:27:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:27:05,116 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 04:27:05,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:27:05,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688369484] [2024-06-28 04:27:05,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688369484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:27:05,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:27:05,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:27:05,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387972057] [2024-06-28 04:27:05,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:27:05,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:27:05,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:27:05,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:27:05,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:27:05,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 04:27:05,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 505 transitions, 7226 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:05,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:27:05,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 04:27:05,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:27:06,605 INFO L124 PetriNetUnfolderBase]: 3775/6162 cut-off events. [2024-06-28 04:27:06,605 INFO L125 PetriNetUnfolderBase]: For 571558/571594 co-relation queries the response was YES. [2024-06-28 04:27:06,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49205 conditions, 6162 events. 3775/6162 cut-off events. For 571558/571594 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 40278 event pairs, 824 based on Foata normal form. 10/6164 useless extension candidates. Maximal degree in co-relation 49047. Up to 5393 conditions per place. [2024-06-28 04:27:06,701 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 413 selfloop transitions, 60 changer transitions 0/544 dead transitions. [2024-06-28 04:27:06,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 544 transitions, 8578 flow [2024-06-28 04:27:06,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:27:06,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:27:06,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-28 04:27:06,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4905149051490515 [2024-06-28 04:27:06,703 INFO L175 Difference]: Start difference. First operand has 366 places, 505 transitions, 7226 flow. Second operand 9 states and 181 transitions. [2024-06-28 04:27:06,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 544 transitions, 8578 flow [2024-06-28 04:27:09,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 544 transitions, 8380 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 04:27:09,548 INFO L231 Difference]: Finished difference. Result has 370 places, 507 transitions, 7190 flow [2024-06-28 04:27:09,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7028, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7190, PETRI_PLACES=370, PETRI_TRANSITIONS=507} [2024-06-28 04:27:09,548 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 328 predicate places. [2024-06-28 04:27:09,548 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 507 transitions, 7190 flow [2024-06-28 04:27:09,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:09,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:27:09,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:27:09,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 04:27:09,549 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:27:09,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:27:09,549 INFO L85 PathProgramCache]: Analyzing trace with hash 544704862, now seen corresponding path program 2 times [2024-06-28 04:27:09,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:27:09,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753662371] [2024-06-28 04:27:09,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:27:09,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:27:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:27:10,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:27:10,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:27:10,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753662371] [2024-06-28 04:27:10,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753662371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:27:10,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:27:10,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:27:10,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552977645] [2024-06-28 04:27:10,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:27:10,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:27:10,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:27:10,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:27:10,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:27:10,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 04:27:10,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 507 transitions, 7190 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:10,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:27:10,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 04:27:10,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:27:12,171 INFO L124 PetriNetUnfolderBase]: 3824/6234 cut-off events. [2024-06-28 04:27:12,171 INFO L125 PetriNetUnfolderBase]: For 598346/598382 co-relation queries the response was YES. [2024-06-28 04:27:12,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49581 conditions, 6234 events. 3824/6234 cut-off events. For 598346/598382 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 40734 event pairs, 855 based on Foata normal form. 14/6242 useless extension candidates. Maximal degree in co-relation 49422. Up to 5572 conditions per place. [2024-06-28 04:27:12,256 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 410 selfloop transitions, 59 changer transitions 0/540 dead transitions. [2024-06-28 04:27:12,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 540 transitions, 8324 flow [2024-06-28 04:27:12,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:27:12,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:27:12,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-28 04:27:12,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4658536585365854 [2024-06-28 04:27:12,257 INFO L175 Difference]: Start difference. First operand has 370 places, 507 transitions, 7190 flow. Second operand 10 states and 191 transitions. [2024-06-28 04:27:12,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 540 transitions, 8324 flow [2024-06-28 04:27:14,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 540 transitions, 8243 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 04:27:14,485 INFO L231 Difference]: Finished difference. Result has 375 places, 508 transitions, 7257 flow [2024-06-28 04:27:14,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7109, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7257, PETRI_PLACES=375, PETRI_TRANSITIONS=508} [2024-06-28 04:27:14,486 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 333 predicate places. [2024-06-28 04:27:14,486 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 508 transitions, 7257 flow [2024-06-28 04:27:14,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:14,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:27:14,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:27:14,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 04:27:14,486 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:27:14,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:27:14,487 INFO L85 PathProgramCache]: Analyzing trace with hash 662977240, now seen corresponding path program 1 times [2024-06-28 04:27:14,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:27:14,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251735298] [2024-06-28 04:27:14,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:27:14,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:27:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:27:15,453 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 04:27:15,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:27:15,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251735298] [2024-06-28 04:27:15,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251735298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:27:15,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:27:15,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:27:15,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315394196] [2024-06-28 04:27:15,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:27:15,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:27:15,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:27:15,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:27:15,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:27:15,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:27:15,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 508 transitions, 7257 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:15,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:27:15,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:27:15,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:27:16,877 INFO L124 PetriNetUnfolderBase]: 3957/6372 cut-off events. [2024-06-28 04:27:16,878 INFO L125 PetriNetUnfolderBase]: For 559767/559767 co-relation queries the response was YES. [2024-06-28 04:27:16,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50907 conditions, 6372 events. 3957/6372 cut-off events. For 559767/559767 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 41037 event pairs, 892 based on Foata normal form. 2/6371 useless extension candidates. Maximal degree in co-relation 50746. Up to 6076 conditions per place. [2024-06-28 04:27:16,970 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 492 selfloop transitions, 29 changer transitions 0/526 dead transitions. [2024-06-28 04:27:16,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 526 transitions, 8405 flow [2024-06-28 04:27:16,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:27:16,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:27:16,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 04:27:16,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298780487804878 [2024-06-28 04:27:16,971 INFO L175 Difference]: Start difference. First operand has 375 places, 508 transitions, 7257 flow. Second operand 8 states and 141 transitions. [2024-06-28 04:27:16,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 526 transitions, 8405 flow [2024-06-28 04:27:19,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 526 transitions, 8289 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 04:27:19,650 INFO L231 Difference]: Finished difference. Result has 375 places, 510 transitions, 7256 flow [2024-06-28 04:27:19,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7141, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7256, PETRI_PLACES=375, PETRI_TRANSITIONS=510} [2024-06-28 04:27:19,650 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 333 predicate places. [2024-06-28 04:27:19,650 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 510 transitions, 7256 flow [2024-06-28 04:27:19,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:19,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:27:19,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:27:19,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 04:27:19,651 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:27:19,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:27:19,651 INFO L85 PathProgramCache]: Analyzing trace with hash 662792542, now seen corresponding path program 3 times [2024-06-28 04:27:19,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:27:19,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423063148] [2024-06-28 04:27:19,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:27:19,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:27:19,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:27:20,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:27:20,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:27:20,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423063148] [2024-06-28 04:27:20,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423063148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:27:20,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:27:20,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:27:20,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041329077] [2024-06-28 04:27:20,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:27:20,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:27:20,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:27:20,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:27:20,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:27:20,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 04:27:20,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 510 transitions, 7256 flow. Second operand has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 11 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:20,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:27:20,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 04:27:20,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:27:22,406 INFO L124 PetriNetUnfolderBase]: 3879/6321 cut-off events. [2024-06-28 04:27:22,406 INFO L125 PetriNetUnfolderBase]: For 617291/617291 co-relation queries the response was YES. [2024-06-28 04:27:22,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50593 conditions, 6321 events. 3879/6321 cut-off events. For 617291/617291 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 41379 event pairs, 863 based on Foata normal form. 14/6329 useless extension candidates. Maximal degree in co-relation 50431. Up to 5737 conditions per place. [2024-06-28 04:27:22,501 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 429 selfloop transitions, 35 changer transitions 0/535 dead transitions. [2024-06-28 04:27:22,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 535 transitions, 8346 flow [2024-06-28 04:27:22,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:27:22,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:27:22,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 04:27:22,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45257452574525747 [2024-06-28 04:27:22,502 INFO L175 Difference]: Start difference. First operand has 375 places, 510 transitions, 7256 flow. Second operand 9 states and 167 transitions. [2024-06-28 04:27:22,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 535 transitions, 8346 flow [2024-06-28 04:27:25,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 535 transitions, 8247 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 04:27:25,529 INFO L231 Difference]: Finished difference. Result has 378 places, 511 transitions, 7257 flow [2024-06-28 04:27:25,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7157, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7257, PETRI_PLACES=378, PETRI_TRANSITIONS=511} [2024-06-28 04:27:25,529 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 336 predicate places. [2024-06-28 04:27:25,530 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 511 transitions, 7257 flow [2024-06-28 04:27:25,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 11 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:25,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:27:25,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:27:25,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 04:27:25,530 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:27:25,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:27:25,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1485024796, now seen corresponding path program 2 times [2024-06-28 04:27:25,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:27:25,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367052215] [2024-06-28 04:27:25,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:27:25,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:27:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:27:26,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:27:26,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:27:26,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367052215] [2024-06-28 04:27:26,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367052215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:27:26,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:27:26,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:27:26,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968790110] [2024-06-28 04:27:26,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:27:26,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:27:26,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:27:26,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:27:26,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:27:26,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:27:26,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 511 transitions, 7257 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:26,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:27:26,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:27:26,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:27:28,009 INFO L124 PetriNetUnfolderBase]: 4017/6464 cut-off events. [2024-06-28 04:27:28,009 INFO L125 PetriNetUnfolderBase]: For 585475/585475 co-relation queries the response was YES. [2024-06-28 04:27:28,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51846 conditions, 6464 events. 4017/6464 cut-off events. For 585475/585475 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 41715 event pairs, 888 based on Foata normal form. 2/6463 useless extension candidates. Maximal degree in co-relation 51683. Up to 6160 conditions per place. [2024-06-28 04:27:28,104 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 492 selfloop transitions, 29 changer transitions 0/526 dead transitions. [2024-06-28 04:27:28,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 526 transitions, 8399 flow [2024-06-28 04:27:28,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:27:28,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:27:28,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2024-06-28 04:27:28,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45528455284552843 [2024-06-28 04:27:28,107 INFO L175 Difference]: Start difference. First operand has 378 places, 511 transitions, 7257 flow. Second operand 6 states and 112 transitions. [2024-06-28 04:27:28,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 526 transitions, 8399 flow [2024-06-28 04:27:30,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 526 transitions, 8327 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 04:27:30,889 INFO L231 Difference]: Finished difference. Result has 377 places, 513 transitions, 7308 flow [2024-06-28 04:27:30,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7185, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7308, PETRI_PLACES=377, PETRI_TRANSITIONS=513} [2024-06-28 04:27:30,890 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 335 predicate places. [2024-06-28 04:27:30,890 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 513 transitions, 7308 flow [2024-06-28 04:27:30,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:30,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:27:30,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:27:30,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 04:27:30,891 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:27:30,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:27:30,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1491465604, now seen corresponding path program 4 times [2024-06-28 04:27:30,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:27:30,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10143606] [2024-06-28 04:27:30,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:27:30,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:27:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:27:31,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:27:31,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:27:31,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10143606] [2024-06-28 04:27:31,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10143606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:27:31,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:27:31,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:27:31,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207919294] [2024-06-28 04:27:31,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:27:31,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:27:31,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:27:31,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:27:31,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:27:31,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 04:27:31,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 513 transitions, 7308 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:31,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:27:31,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 04:27:31,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:27:33,417 INFO L124 PetriNetUnfolderBase]: 3855/6290 cut-off events. [2024-06-28 04:27:33,417 INFO L125 PetriNetUnfolderBase]: For 589044/589044 co-relation queries the response was YES. [2024-06-28 04:27:33,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49421 conditions, 6290 events. 3855/6290 cut-off events. For 589044/589044 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 41240 event pairs, 840 based on Foata normal form. 14/6298 useless extension candidates. Maximal degree in co-relation 49257. Up to 5670 conditions per place. [2024-06-28 04:27:33,502 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 435 selfloop transitions, 38 changer transitions 0/544 dead transitions. [2024-06-28 04:27:33,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 544 transitions, 8428 flow [2024-06-28 04:27:33,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:27:33,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:27:33,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-28 04:27:33,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4969512195121951 [2024-06-28 04:27:33,504 INFO L175 Difference]: Start difference. First operand has 377 places, 513 transitions, 7308 flow. Second operand 8 states and 163 transitions. [2024-06-28 04:27:33,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 544 transitions, 8428 flow [2024-06-28 04:27:36,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 544 transitions, 8325 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 04:27:36,481 INFO L231 Difference]: Finished difference. Result has 381 places, 513 transitions, 7290 flow [2024-06-28 04:27:36,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7205, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7290, PETRI_PLACES=381, PETRI_TRANSITIONS=513} [2024-06-28 04:27:36,482 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 339 predicate places. [2024-06-28 04:27:36,482 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 513 transitions, 7290 flow [2024-06-28 04:27:36,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:36,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:27:36,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:27:36,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 04:27:36,483 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:27:36,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:27:36,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1484794404, now seen corresponding path program 1 times [2024-06-28 04:27:36,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:27:36,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91966027] [2024-06-28 04:27:36,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:27:36,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:27:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:27:37,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:27:37,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:27:37,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91966027] [2024-06-28 04:27:37,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91966027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:27:37,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:27:37,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:27:37,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965480931] [2024-06-28 04:27:37,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:27:37,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:27:37,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:27:37,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:27:37,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:27:37,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:27:37,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 513 transitions, 7290 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:37,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:27:37,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:27:37,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:27:38,925 INFO L124 PetriNetUnfolderBase]: 3981/6421 cut-off events. [2024-06-28 04:27:38,926 INFO L125 PetriNetUnfolderBase]: For 532534/532534 co-relation queries the response was YES. [2024-06-28 04:27:38,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50186 conditions, 6421 events. 3981/6421 cut-off events. For 532534/532534 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 41472 event pairs, 899 based on Foata normal form. 1/6419 useless extension candidates. Maximal degree in co-relation 50021. Up to 6097 conditions per place. [2024-06-28 04:27:39,019 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 487 selfloop transitions, 37 changer transitions 0/529 dead transitions. [2024-06-28 04:27:39,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 529 transitions, 8404 flow [2024-06-28 04:27:39,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:27:39,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:27:39,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-06-28 04:27:39,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.483739837398374 [2024-06-28 04:27:39,020 INFO L175 Difference]: Start difference. First operand has 381 places, 513 transitions, 7290 flow. Second operand 6 states and 119 transitions. [2024-06-28 04:27:39,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 529 transitions, 8404 flow [2024-06-28 04:27:41,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 529 transitions, 8294 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 04:27:41,661 INFO L231 Difference]: Finished difference. Result has 380 places, 513 transitions, 7272 flow [2024-06-28 04:27:41,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7180, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7272, PETRI_PLACES=380, PETRI_TRANSITIONS=513} [2024-06-28 04:27:41,661 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 338 predicate places. [2024-06-28 04:27:41,662 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 513 transitions, 7272 flow [2024-06-28 04:27:41,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:41,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:27:41,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:27:41,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 04:27:41,662 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:27:41,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:27:41,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1484794156, now seen corresponding path program 3 times [2024-06-28 04:27:41,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:27:41,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511402342] [2024-06-28 04:27:41,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:27:41,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:27:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:27:42,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:27:42,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:27:42,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511402342] [2024-06-28 04:27:42,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511402342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:27:42,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:27:42,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:27:42,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199362329] [2024-06-28 04:27:42,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:27:42,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:27:42,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:27:42,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:27:42,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:27:42,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:27:42,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 513 transitions, 7272 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:42,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:27:42,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:27:42,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:27:44,060 INFO L124 PetriNetUnfolderBase]: 3989/6435 cut-off events. [2024-06-28 04:27:44,061 INFO L125 PetriNetUnfolderBase]: For 546874/546874 co-relation queries the response was YES. [2024-06-28 04:27:44,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50300 conditions, 6435 events. 3989/6435 cut-off events. For 546874/546874 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 41576 event pairs, 885 based on Foata normal form. 2/6434 useless extension candidates. Maximal degree in co-relation 50134. Up to 6109 conditions per place. [2024-06-28 04:27:44,155 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 487 selfloop transitions, 36 changer transitions 0/528 dead transitions. [2024-06-28 04:27:44,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 528 transitions, 8418 flow [2024-06-28 04:27:44,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:27:44,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:27:44,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-06-28 04:27:44,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45934959349593496 [2024-06-28 04:27:44,156 INFO L175 Difference]: Start difference. First operand has 380 places, 513 transitions, 7272 flow. Second operand 6 states and 113 transitions. [2024-06-28 04:27:44,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 528 transitions, 8418 flow [2024-06-28 04:27:46,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 528 transitions, 8319 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 04:27:46,784 INFO L231 Difference]: Finished difference. Result has 380 places, 515 transitions, 7313 flow [2024-06-28 04:27:46,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7173, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7313, PETRI_PLACES=380, PETRI_TRANSITIONS=515} [2024-06-28 04:27:46,785 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 338 predicate places. [2024-06-28 04:27:46,785 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 515 transitions, 7313 flow [2024-06-28 04:27:46,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:46,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:27:46,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:27:46,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 04:27:46,785 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:27:46,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:27:46,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1254808876, now seen corresponding path program 4 times [2024-06-28 04:27:46,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:27:46,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535288114] [2024-06-28 04:27:46,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:27:46,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:27:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:27:47,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:27:47,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:27:47,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535288114] [2024-06-28 04:27:47,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535288114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:27:47,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:27:47,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:27:47,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555536243] [2024-06-28 04:27:47,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:27:47,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:27:47,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:27:47,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:27:47,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:27:47,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:27:47,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 515 transitions, 7313 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:47,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:27:47,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:27:47,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:27:49,148 INFO L124 PetriNetUnfolderBase]: 3984/6438 cut-off events. [2024-06-28 04:27:49,148 INFO L125 PetriNetUnfolderBase]: For 538948/538948 co-relation queries the response was YES. [2024-06-28 04:27:49,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50159 conditions, 6438 events. 3984/6438 cut-off events. For 538948/538948 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 41668 event pairs, 898 based on Foata normal form. 2/6437 useless extension candidates. Maximal degree in co-relation 49993. Up to 6144 conditions per place. [2024-06-28 04:27:49,245 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 506 selfloop transitions, 16 changer transitions 0/527 dead transitions. [2024-06-28 04:27:49,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 527 transitions, 8443 flow [2024-06-28 04:27:49,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:27:49,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:27:49,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-28 04:27:49,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4349593495934959 [2024-06-28 04:27:49,246 INFO L175 Difference]: Start difference. First operand has 380 places, 515 transitions, 7313 flow. Second operand 6 states and 107 transitions. [2024-06-28 04:27:49,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 527 transitions, 8443 flow [2024-06-28 04:27:52,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 527 transitions, 8327 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-28 04:27:52,033 INFO L231 Difference]: Finished difference. Result has 382 places, 517 transitions, 7294 flow [2024-06-28 04:27:52,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7201, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7294, PETRI_PLACES=382, PETRI_TRANSITIONS=517} [2024-06-28 04:27:52,034 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 340 predicate places. [2024-06-28 04:27:52,034 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 517 transitions, 7294 flow [2024-06-28 04:27:52,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:52,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:27:52,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:27:52,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 04:27:52,034 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:27:52,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:27:52,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1677585614, now seen corresponding path program 1 times [2024-06-28 04:27:52,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:27:52,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198236989] [2024-06-28 04:27:52,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:27:52,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:27:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:27:52,905 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 04:27:52,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:27:52,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198236989] [2024-06-28 04:27:52,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198236989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:27:52,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:27:52,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:27:52,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558164741] [2024-06-28 04:27:52,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:27:52,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:27:52,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:27:52,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:27:52,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:27:53,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:27:53,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 517 transitions, 7294 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:53,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:27:53,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:27:53,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:27:54,488 INFO L124 PetriNetUnfolderBase]: 3997/6451 cut-off events. [2024-06-28 04:27:54,489 INFO L125 PetriNetUnfolderBase]: For 538344/538344 co-relation queries the response was YES. [2024-06-28 04:27:54,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50289 conditions, 6451 events. 3997/6451 cut-off events. For 538344/538344 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 41595 event pairs, 859 based on Foata normal form. 1/6449 useless extension candidates. Maximal degree in co-relation 50122. Up to 6075 conditions per place. [2024-06-28 04:27:54,576 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 499 selfloop transitions, 56 changer transitions 0/560 dead transitions. [2024-06-28 04:27:54,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 560 transitions, 8949 flow [2024-06-28 04:27:54,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:27:54,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:27:54,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 04:27:54,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45257452574525747 [2024-06-28 04:27:54,577 INFO L175 Difference]: Start difference. First operand has 382 places, 517 transitions, 7294 flow. Second operand 9 states and 167 transitions. [2024-06-28 04:27:54,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 560 transitions, 8949 flow [2024-06-28 04:27:57,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 560 transitions, 8872 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-28 04:27:57,474 INFO L231 Difference]: Finished difference. Result has 389 places, 534 transitions, 7656 flow [2024-06-28 04:27:57,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7217, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7656, PETRI_PLACES=389, PETRI_TRANSITIONS=534} [2024-06-28 04:27:57,474 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 347 predicate places. [2024-06-28 04:27:57,474 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 534 transitions, 7656 flow [2024-06-28 04:27:57,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:57,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:27:57,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:27:57,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 04:27:57,475 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:27:57,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:27:57,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1843296629, now seen corresponding path program 1 times [2024-06-28 04:27:57,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:27:57,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840544109] [2024-06-28 04:27:57,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:27:57,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:27:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:27:58,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:27:58,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:27:58,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840544109] [2024-06-28 04:27:58,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840544109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:27:58,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:27:58,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:27:58,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127442470] [2024-06-28 04:27:58,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:27:58,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:27:58,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:27:58,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:27:58,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:27:58,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:27:58,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 534 transitions, 7656 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:58,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:27:58,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:27:58,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:27:59,829 INFO L124 PetriNetUnfolderBase]: 4049/6523 cut-off events. [2024-06-28 04:27:59,829 INFO L125 PetriNetUnfolderBase]: For 580367/580367 co-relation queries the response was YES. [2024-06-28 04:27:59,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52054 conditions, 6523 events. 4049/6523 cut-off events. For 580367/580367 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 42078 event pairs, 859 based on Foata normal form. 4/6524 useless extension candidates. Maximal degree in co-relation 51884. Up to 5907 conditions per place. [2024-06-28 04:27:59,926 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 473 selfloop transitions, 92 changer transitions 0/570 dead transitions. [2024-06-28 04:27:59,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 570 transitions, 9297 flow [2024-06-28 04:27:59,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:27:59,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:27:59,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-28 04:27:59,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715447154471545 [2024-06-28 04:27:59,927 INFO L175 Difference]: Start difference. First operand has 389 places, 534 transitions, 7656 flow. Second operand 9 states and 174 transitions. [2024-06-28 04:27:59,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 570 transitions, 9297 flow [2024-06-28 04:28:03,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 570 transitions, 9128 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-28 04:28:03,416 INFO L231 Difference]: Finished difference. Result has 394 places, 540 transitions, 7846 flow [2024-06-28 04:28:03,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7501, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7846, PETRI_PLACES=394, PETRI_TRANSITIONS=540} [2024-06-28 04:28:03,417 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 352 predicate places. [2024-06-28 04:28:03,417 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 540 transitions, 7846 flow [2024-06-28 04:28:03,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:03,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:28:03,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:28:03,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 04:28:03,417 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:28:03,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:28:03,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1843296474, now seen corresponding path program 2 times [2024-06-28 04:28:03,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:28:03,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739927168] [2024-06-28 04:28:03,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:28:03,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:28:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:28:04,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:28:04,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:28:04,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739927168] [2024-06-28 04:28:04,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739927168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:28:04,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:28:04,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:28:04,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977618033] [2024-06-28 04:28:04,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:28:04,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:28:04,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:28:04,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:28:04,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:28:04,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:28:04,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 540 transitions, 7846 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:04,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:28:04,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:28:04,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:28:06,004 INFO L124 PetriNetUnfolderBase]: 4059/6537 cut-off events. [2024-06-28 04:28:06,004 INFO L125 PetriNetUnfolderBase]: For 590445/590445 co-relation queries the response was YES. [2024-06-28 04:28:06,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52860 conditions, 6537 events. 4059/6537 cut-off events. For 590445/590445 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 42214 event pairs, 864 based on Foata normal form. 2/6536 useless extension candidates. Maximal degree in co-relation 52688. Up to 6117 conditions per place. [2024-06-28 04:28:06,102 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 485 selfloop transitions, 79 changer transitions 0/569 dead transitions. [2024-06-28 04:28:06,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 569 transitions, 9210 flow [2024-06-28 04:28:06,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:28:06,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:28:06,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 04:28:06,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44986449864498645 [2024-06-28 04:28:06,103 INFO L175 Difference]: Start difference. First operand has 394 places, 540 transitions, 7846 flow. Second operand 9 states and 166 transitions. [2024-06-28 04:28:06,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 569 transitions, 9210 flow [2024-06-28 04:28:09,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 569 transitions, 9031 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-28 04:28:09,085 INFO L231 Difference]: Finished difference. Result has 398 places, 546 transitions, 7996 flow [2024-06-28 04:28:09,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7667, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7996, PETRI_PLACES=398, PETRI_TRANSITIONS=546} [2024-06-28 04:28:09,085 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 356 predicate places. [2024-06-28 04:28:09,086 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 546 transitions, 7996 flow [2024-06-28 04:28:09,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:09,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:28:09,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:28:09,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 04:28:09,086 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:28:09,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:28:09,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1673770599, now seen corresponding path program 2 times [2024-06-28 04:28:09,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:28:09,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493831467] [2024-06-28 04:28:09,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:28:09,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:28:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:28:10,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:28:10,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:28:10,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493831467] [2024-06-28 04:28:10,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493831467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:28:10,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:28:10,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:28:10,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697571507] [2024-06-28 04:28:10,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:28:10,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:28:10,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:28:10,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:28:10,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:28:10,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:28:10,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 546 transitions, 7996 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:10,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:28:10,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:28:10,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:28:11,728 INFO L124 PetriNetUnfolderBase]: 4111/6609 cut-off events. [2024-06-28 04:28:11,728 INFO L125 PetriNetUnfolderBase]: For 632786/632786 co-relation queries the response was YES. [2024-06-28 04:28:11,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54428 conditions, 6609 events. 4111/6609 cut-off events. For 632786/632786 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 42676 event pairs, 863 based on Foata normal form. 4/6610 useless extension candidates. Maximal degree in co-relation 54254. Up to 6098 conditions per place. [2024-06-28 04:28:11,827 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 500 selfloop transitions, 79 changer transitions 0/584 dead transitions. [2024-06-28 04:28:11,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 584 transitions, 9655 flow [2024-06-28 04:28:11,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:28:11,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:28:11,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-28 04:28:11,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434589800443459 [2024-06-28 04:28:11,828 INFO L175 Difference]: Start difference. First operand has 398 places, 546 transitions, 7996 flow. Second operand 11 states and 200 transitions. [2024-06-28 04:28:11,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 584 transitions, 9655 flow [2024-06-28 04:28:13,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 584 transitions, 9381 flow, removed 62 selfloop flow, removed 7 redundant places. [2024-06-28 04:28:13,935 INFO L231 Difference]: Finished difference. Result has 402 places, 552 transitions, 8016 flow [2024-06-28 04:28:13,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7722, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8016, PETRI_PLACES=402, PETRI_TRANSITIONS=552} [2024-06-28 04:28:13,936 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 360 predicate places. [2024-06-28 04:28:13,936 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 552 transitions, 8016 flow [2024-06-28 04:28:13,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:13,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:28:13,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:28:13,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 04:28:13,937 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:28:13,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:28:13,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1376297330, now seen corresponding path program 3 times [2024-06-28 04:28:13,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:28:13,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563302103] [2024-06-28 04:28:13,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:28:13,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:28:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:28:14,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:28:14,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:28:14,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563302103] [2024-06-28 04:28:14,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563302103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:28:14,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:28:14,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:28:14,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468739642] [2024-06-28 04:28:14,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:28:14,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:28:14,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:28:14,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:28:14,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:28:14,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:28:14,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 552 transitions, 8016 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:14,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:28:14,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:28:14,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:28:16,585 INFO L124 PetriNetUnfolderBase]: 4121/6625 cut-off events. [2024-06-28 04:28:16,585 INFO L125 PetriNetUnfolderBase]: For 635875/635875 co-relation queries the response was YES. [2024-06-28 04:28:16,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54726 conditions, 6625 events. 4121/6625 cut-off events. For 635875/635875 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 42769 event pairs, 870 based on Foata normal form. 2/6624 useless extension candidates. Maximal degree in co-relation 54551. Up to 6256 conditions per place. [2024-06-28 04:28:16,687 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 516 selfloop transitions, 58 changer transitions 0/579 dead transitions. [2024-06-28 04:28:16,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 579 transitions, 9406 flow [2024-06-28 04:28:16,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:28:16,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:28:16,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 04:28:16,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 04:28:16,689 INFO L175 Difference]: Start difference. First operand has 402 places, 552 transitions, 8016 flow. Second operand 9 states and 162 transitions. [2024-06-28 04:28:16,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 579 transitions, 9406 flow [2024-06-28 04:28:19,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 579 transitions, 9244 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-28 04:28:19,578 INFO L231 Difference]: Finished difference. Result has 404 places, 558 transitions, 8153 flow [2024-06-28 04:28:19,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7854, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8153, PETRI_PLACES=404, PETRI_TRANSITIONS=558} [2024-06-28 04:28:19,578 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 362 predicate places. [2024-06-28 04:28:19,578 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 558 transitions, 8153 flow [2024-06-28 04:28:19,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:19,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:28:19,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:28:19,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 04:28:19,578 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:28:19,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:28:19,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1847015699, now seen corresponding path program 3 times [2024-06-28 04:28:19,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:28:19,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78270082] [2024-06-28 04:28:19,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:28:19,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:28:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:28:20,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:28:20,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:28:20,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78270082] [2024-06-28 04:28:20,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78270082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:28:20,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:28:20,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:28:20,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941259245] [2024-06-28 04:28:20,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:28:20,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:28:20,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:28:20,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:28:20,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:28:20,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:28:20,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 558 transitions, 8153 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:20,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:28:20,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:28:20,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:28:22,341 INFO L124 PetriNetUnfolderBase]: 4109/6607 cut-off events. [2024-06-28 04:28:22,341 INFO L125 PetriNetUnfolderBase]: For 642253/642253 co-relation queries the response was YES. [2024-06-28 04:28:22,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54777 conditions, 6607 events. 4109/6607 cut-off events. For 642253/642253 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 42652 event pairs, 861 based on Foata normal form. 4/6608 useless extension candidates. Maximal degree in co-relation 54600. Up to 6104 conditions per place. [2024-06-28 04:28:22,428 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 505 selfloop transitions, 77 changer transitions 0/587 dead transitions. [2024-06-28 04:28:22,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 587 transitions, 9502 flow [2024-06-28 04:28:22,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:28:22,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:28:22,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-28 04:28:22,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-28 04:28:22,429 INFO L175 Difference]: Start difference. First operand has 404 places, 558 transitions, 8153 flow. Second operand 9 states and 171 transitions. [2024-06-28 04:28:22,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 587 transitions, 9502 flow [2024-06-28 04:28:25,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 587 transitions, 9230 flow, removed 82 selfloop flow, removed 7 redundant places. [2024-06-28 04:28:25,408 INFO L231 Difference]: Finished difference. Result has 406 places, 558 transitions, 8042 flow [2024-06-28 04:28:25,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7881, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8042, PETRI_PLACES=406, PETRI_TRANSITIONS=558} [2024-06-28 04:28:25,408 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 364 predicate places. [2024-06-28 04:28:25,409 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 558 transitions, 8042 flow [2024-06-28 04:28:25,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:25,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:28:25,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:28:25,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 04:28:25,409 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:28:25,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:28:25,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1529885804, now seen corresponding path program 4 times [2024-06-28 04:28:25,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:28:25,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310153621] [2024-06-28 04:28:25,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:28:25,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:28:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:28:26,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:28:26,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:28:26,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310153621] [2024-06-28 04:28:26,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310153621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:28:26,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:28:26,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:28:26,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581303429] [2024-06-28 04:28:26,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:28:26,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:28:26,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:28:26,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:28:26,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:28:26,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:28:26,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 558 transitions, 8042 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:26,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:28:26,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:28:26,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:28:28,248 INFO L124 PetriNetUnfolderBase]: 4114/6614 cut-off events. [2024-06-28 04:28:28,248 INFO L125 PetriNetUnfolderBase]: For 637280/637280 co-relation queries the response was YES. [2024-06-28 04:28:28,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54910 conditions, 6614 events. 4114/6614 cut-off events. For 637280/637280 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 42652 event pairs, 864 based on Foata normal form. 1/6612 useless extension candidates. Maximal degree in co-relation 54732. Up to 6298 conditions per place. [2024-06-28 04:28:28,352 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 536 selfloop transitions, 38 changer transitions 0/579 dead transitions. [2024-06-28 04:28:28,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 579 transitions, 9330 flow [2024-06-28 04:28:28,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:28:28,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:28:28,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 04:28:28,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173441734417344 [2024-06-28 04:28:28,353 INFO L175 Difference]: Start difference. First operand has 406 places, 558 transitions, 8042 flow. Second operand 9 states and 154 transitions. [2024-06-28 04:28:28,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 579 transitions, 9330 flow [2024-06-28 04:28:32,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 579 transitions, 9176 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 04:28:32,663 INFO L231 Difference]: Finished difference. Result has 409 places, 563 transitions, 8078 flow [2024-06-28 04:28:32,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7888, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8078, PETRI_PLACES=409, PETRI_TRANSITIONS=563} [2024-06-28 04:28:32,663 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 367 predicate places. [2024-06-28 04:28:32,663 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 563 transitions, 8078 flow [2024-06-28 04:28:32,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:32,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:28:32,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:28:32,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 04:28:32,664 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:28:32,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:28:32,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1529885649, now seen corresponding path program 4 times [2024-06-28 04:28:32,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:28:32,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657451423] [2024-06-28 04:28:32,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:28:32,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:28:32,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:28:33,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:28:33,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:28:33,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657451423] [2024-06-28 04:28:33,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657451423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:28:33,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:28:33,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:28:33,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171195012] [2024-06-28 04:28:33,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:28:33,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:28:33,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:28:33,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:28:33,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:28:33,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:28:33,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 563 transitions, 8078 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:33,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:28:33,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:28:33,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:28:35,201 INFO L124 PetriNetUnfolderBase]: 4166/6688 cut-off events. [2024-06-28 04:28:35,201 INFO L125 PetriNetUnfolderBase]: For 682383/682383 co-relation queries the response was YES. [2024-06-28 04:28:35,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55967 conditions, 6688 events. 4166/6688 cut-off events. For 682383/682383 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 43181 event pairs, 873 based on Foata normal form. 4/6689 useless extension candidates. Maximal degree in co-relation 55786. Up to 6267 conditions per place. [2024-06-28 04:28:35,301 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 531 selfloop transitions, 56 changer transitions 0/592 dead transitions. [2024-06-28 04:28:35,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 592 transitions, 9714 flow [2024-06-28 04:28:35,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:28:35,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:28:35,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 04:28:35,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44986449864498645 [2024-06-28 04:28:35,303 INFO L175 Difference]: Start difference. First operand has 409 places, 563 transitions, 8078 flow. Second operand 9 states and 166 transitions. [2024-06-28 04:28:35,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 592 transitions, 9714 flow [2024-06-28 04:28:39,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 592 transitions, 9590 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-28 04:28:39,276 INFO L231 Difference]: Finished difference. Result has 413 places, 569 transitions, 8215 flow [2024-06-28 04:28:39,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7954, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8215, PETRI_PLACES=413, PETRI_TRANSITIONS=569} [2024-06-28 04:28:39,277 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 371 predicate places. [2024-06-28 04:28:39,277 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 569 transitions, 8215 flow [2024-06-28 04:28:39,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:39,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:28:39,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:28:39,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 04:28:39,277 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:28:39,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:28:39,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1529880069, now seen corresponding path program 5 times [2024-06-28 04:28:39,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:28:39,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759943126] [2024-06-28 04:28:39,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:28:39,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:28:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:28:40,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:28:40,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:28:40,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759943126] [2024-06-28 04:28:40,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759943126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:28:40,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:28:40,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:28:40,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172710834] [2024-06-28 04:28:40,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:28:40,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:28:40,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:28:40,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:28:40,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:28:40,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:28:40,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 569 transitions, 8215 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:40,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:28:40,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:28:40,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:28:42,039 INFO L124 PetriNetUnfolderBase]: 4186/6726 cut-off events. [2024-06-28 04:28:42,039 INFO L125 PetriNetUnfolderBase]: For 695634/695634 co-relation queries the response was YES. [2024-06-28 04:28:42,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56456 conditions, 6726 events. 4186/6726 cut-off events. For 695634/695634 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 43476 event pairs, 889 based on Foata normal form. 4/6727 useless extension candidates. Maximal degree in co-relation 56274. Up to 6283 conditions per place. [2024-06-28 04:28:42,129 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 532 selfloop transitions, 58 changer transitions 0/595 dead transitions. [2024-06-28 04:28:42,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 595 transitions, 9797 flow [2024-06-28 04:28:42,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:28:42,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:28:42,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 04:28:42,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45257452574525747 [2024-06-28 04:28:42,130 INFO L175 Difference]: Start difference. First operand has 413 places, 569 transitions, 8215 flow. Second operand 9 states and 167 transitions. [2024-06-28 04:28:42,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 595 transitions, 9797 flow [2024-06-28 04:28:46,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 595 transitions, 9651 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-28 04:28:46,112 INFO L231 Difference]: Finished difference. Result has 417 places, 572 transitions, 8265 flow [2024-06-28 04:28:46,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8087, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8265, PETRI_PLACES=417, PETRI_TRANSITIONS=572} [2024-06-28 04:28:46,112 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 375 predicate places. [2024-06-28 04:28:46,112 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 572 transitions, 8265 flow [2024-06-28 04:28:46,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:46,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:28:46,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:28:46,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 04:28:46,112 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:28:46,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:28:46,113 INFO L85 PathProgramCache]: Analyzing trace with hash -470309125, now seen corresponding path program 6 times [2024-06-28 04:28:46,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:28:46,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306430818] [2024-06-28 04:28:46,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:28:46,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:28:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:28:46,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:28:46,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:28:46,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306430818] [2024-06-28 04:28:46,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306430818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:28:46,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:28:46,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:28:46,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559979707] [2024-06-28 04:28:46,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:28:46,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:28:46,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:28:46,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:28:46,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:28:46,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:28:46,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 572 transitions, 8265 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:46,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:28:46,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:28:46,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:28:48,519 INFO L124 PetriNetUnfolderBase]: 4174/6708 cut-off events. [2024-06-28 04:28:48,520 INFO L125 PetriNetUnfolderBase]: For 686514/686514 co-relation queries the response was YES. [2024-06-28 04:28:48,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55955 conditions, 6708 events. 4174/6708 cut-off events. For 686514/686514 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 43366 event pairs, 885 based on Foata normal form. 4/6709 useless extension candidates. Maximal degree in co-relation 55771. Up to 6345 conditions per place. [2024-06-28 04:28:48,625 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 542 selfloop transitions, 45 changer transitions 0/592 dead transitions. [2024-06-28 04:28:48,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 592 transitions, 9543 flow [2024-06-28 04:28:48,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:28:48,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:28:48,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 04:28:48,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43360433604336046 [2024-06-28 04:28:48,626 INFO L175 Difference]: Start difference. First operand has 417 places, 572 transitions, 8265 flow. Second operand 9 states and 160 transitions. [2024-06-28 04:28:48,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 592 transitions, 9543 flow [2024-06-28 04:28:52,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 592 transitions, 9384 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 04:28:52,270 INFO L231 Difference]: Finished difference. Result has 420 places, 572 transitions, 8202 flow [2024-06-28 04:28:52,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8106, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8202, PETRI_PLACES=420, PETRI_TRANSITIONS=572} [2024-06-28 04:28:52,270 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 378 predicate places. [2024-06-28 04:28:52,270 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 572 transitions, 8202 flow [2024-06-28 04:28:52,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:52,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:28:52,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:28:52,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 04:28:52,271 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:28:52,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:28:52,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1529670602, now seen corresponding path program 1 times [2024-06-28 04:28:52,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:28:52,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168456063] [2024-06-28 04:28:52,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:28:52,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:28:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:28:53,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:28:53,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:28:53,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168456063] [2024-06-28 04:28:53,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168456063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:28:53,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:28:53,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:28:53,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983943964] [2024-06-28 04:28:53,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:28:53,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:28:53,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:28:53,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:28:53,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:28:53,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:28:53,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 572 transitions, 8202 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:53,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:28:53,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:28:53,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:28:55,003 INFO L124 PetriNetUnfolderBase]: 4189/6716 cut-off events. [2024-06-28 04:28:55,004 INFO L125 PetriNetUnfolderBase]: For 693933/693933 co-relation queries the response was YES. [2024-06-28 04:28:55,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56133 conditions, 6716 events. 4189/6716 cut-off events. For 693933/693933 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 43275 event pairs, 834 based on Foata normal form. 3/6716 useless extension candidates. Maximal degree in co-relation 55948. Up to 6254 conditions per place. [2024-06-28 04:28:55,101 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 513 selfloop transitions, 78 changer transitions 0/596 dead transitions. [2024-06-28 04:28:55,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 596 transitions, 9600 flow [2024-06-28 04:28:55,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:28:55,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:28:55,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 04:28:55,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573170731707317 [2024-06-28 04:28:55,102 INFO L175 Difference]: Start difference. First operand has 420 places, 572 transitions, 8202 flow. Second operand 8 states and 150 transitions. [2024-06-28 04:28:55,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 596 transitions, 9600 flow [2024-06-28 04:28:59,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 596 transitions, 9474 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 04:28:59,303 INFO L231 Difference]: Finished difference. Result has 419 places, 575 transitions, 8336 flow [2024-06-28 04:28:59,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8076, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8336, PETRI_PLACES=419, PETRI_TRANSITIONS=575} [2024-06-28 04:28:59,304 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 377 predicate places. [2024-06-28 04:28:59,304 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 575 transitions, 8336 flow [2024-06-28 04:28:59,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:59,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:28:59,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:28:59,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 04:28:59,304 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:28:59,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:28:59,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1301318558, now seen corresponding path program 5 times [2024-06-28 04:28:59,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:28:59,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982283255] [2024-06-28 04:28:59,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:28:59,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:28:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:00,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:00,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:00,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982283255] [2024-06-28 04:29:00,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982283255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:00,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:00,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:29:00,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132550053] [2024-06-28 04:29:00,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:00,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:29:00,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:00,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:29:00,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:29:00,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:29:00,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 575 transitions, 8336 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:00,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:00,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:29:00,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:02,125 INFO L124 PetriNetUnfolderBase]: 4202/6742 cut-off events. [2024-06-28 04:29:02,125 INFO L125 PetriNetUnfolderBase]: For 705064/705064 co-relation queries the response was YES. [2024-06-28 04:29:02,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57043 conditions, 6742 events. 4202/6742 cut-off events. For 705064/705064 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 43524 event pairs, 904 based on Foata normal form. 1/6733 useless extension candidates. Maximal degree in co-relation 56857. Up to 6268 conditions per place. [2024-06-28 04:29:02,223 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 516 selfloop transitions, 102 changer transitions 0/623 dead transitions. [2024-06-28 04:29:02,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 623 transitions, 10170 flow [2024-06-28 04:29:02,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:29:02,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:29:02,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 04:29:02,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45257452574525747 [2024-06-28 04:29:02,224 INFO L175 Difference]: Start difference. First operand has 419 places, 575 transitions, 8336 flow. Second operand 9 states and 167 transitions. [2024-06-28 04:29:02,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 623 transitions, 10170 flow [2024-06-28 04:29:06,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 623 transitions, 9952 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-28 04:29:06,715 INFO L231 Difference]: Finished difference. Result has 424 places, 599 transitions, 8732 flow [2024-06-28 04:29:06,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8118, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8732, PETRI_PLACES=424, PETRI_TRANSITIONS=599} [2024-06-28 04:29:06,716 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 382 predicate places. [2024-06-28 04:29:06,716 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 599 transitions, 8732 flow [2024-06-28 04:29:06,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:06,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:06,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:06,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 04:29:06,716 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:29:06,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:06,716 INFO L85 PathProgramCache]: Analyzing trace with hash -591418159, now seen corresponding path program 7 times [2024-06-28 04:29:06,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:06,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013035068] [2024-06-28 04:29:06,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:06,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:07,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:07,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:07,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013035068] [2024-06-28 04:29:07,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013035068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:07,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:07,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:29:07,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143049405] [2024-06-28 04:29:07,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:07,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:29:07,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:07,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:29:07,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:29:07,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:29:07,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 599 transitions, 8732 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:07,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:07,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:29:07,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:09,217 INFO L124 PetriNetUnfolderBase]: 4278/6837 cut-off events. [2024-06-28 04:29:09,217 INFO L125 PetriNetUnfolderBase]: For 778040/778040 co-relation queries the response was YES. [2024-06-28 04:29:09,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59589 conditions, 6837 events. 4278/6837 cut-off events. For 778040/778040 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 43963 event pairs, 854 based on Foata normal form. 4/6831 useless extension candidates. Maximal degree in co-relation 59400. Up to 5702 conditions per place. [2024-06-28 04:29:09,326 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 435 selfloop transitions, 199 changer transitions 0/639 dead transitions. [2024-06-28 04:29:09,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 639 transitions, 10885 flow [2024-06-28 04:29:09,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:29:09,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:29:09,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-28 04:29:09,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2024-06-28 04:29:09,328 INFO L175 Difference]: Start difference. First operand has 424 places, 599 transitions, 8732 flow. Second operand 9 states and 177 transitions. [2024-06-28 04:29:09,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 639 transitions, 10885 flow [2024-06-28 04:29:13,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 639 transitions, 10618 flow, removed 75 selfloop flow, removed 4 redundant places. [2024-06-28 04:29:13,460 INFO L231 Difference]: Finished difference. Result has 429 places, 608 transitions, 9164 flow [2024-06-28 04:29:13,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8489, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9164, PETRI_PLACES=429, PETRI_TRANSITIONS=608} [2024-06-28 04:29:13,461 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 387 predicate places. [2024-06-28 04:29:13,461 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 608 transitions, 9164 flow [2024-06-28 04:29:13,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:13,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:13,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:13,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 04:29:13,461 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:29:13,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:13,462 INFO L85 PathProgramCache]: Analyzing trace with hash 46996748, now seen corresponding path program 6 times [2024-06-28 04:29:13,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:13,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810844122] [2024-06-28 04:29:13,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:13,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:14,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:14,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:14,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810844122] [2024-06-28 04:29:14,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810844122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:14,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:14,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:29:14,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352913957] [2024-06-28 04:29:14,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:14,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:29:14,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:14,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:29:14,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:29:14,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:29:14,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 608 transitions, 9164 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:14,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:14,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:29:14,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:16,145 INFO L124 PetriNetUnfolderBase]: 4291/6863 cut-off events. [2024-06-28 04:29:16,145 INFO L125 PetriNetUnfolderBase]: For 786266/786266 co-relation queries the response was YES. [2024-06-28 04:29:16,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60719 conditions, 6863 events. 4291/6863 cut-off events. For 786266/786266 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 44245 event pairs, 906 based on Foata normal form. 1/6854 useless extension candidates. Maximal degree in co-relation 60529. Up to 6391 conditions per place. [2024-06-28 04:29:16,251 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 535 selfloop transitions, 98 changer transitions 0/638 dead transitions. [2024-06-28 04:29:16,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 638 transitions, 10894 flow [2024-06-28 04:29:16,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:29:16,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:29:16,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 04:29:16,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45528455284552843 [2024-06-28 04:29:16,253 INFO L175 Difference]: Start difference. First operand has 429 places, 608 transitions, 9164 flow. Second operand 9 states and 168 transitions. [2024-06-28 04:29:16,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 638 transitions, 10894 flow [2024-06-28 04:29:20,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 638 transitions, 10638 flow, removed 68 selfloop flow, removed 4 redundant places. [2024-06-28 04:29:20,410 INFO L231 Difference]: Finished difference. Result has 434 places, 614 transitions, 9284 flow [2024-06-28 04:29:20,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8908, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9284, PETRI_PLACES=434, PETRI_TRANSITIONS=614} [2024-06-28 04:29:20,410 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 392 predicate places. [2024-06-28 04:29:20,411 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 614 transitions, 9284 flow [2024-06-28 04:29:20,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:20,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:20,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:20,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 04:29:20,411 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:29:20,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:20,411 INFO L85 PathProgramCache]: Analyzing trace with hash -368361839, now seen corresponding path program 8 times [2024-06-28 04:29:20,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:20,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881182759] [2024-06-28 04:29:20,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:20,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:21,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:21,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:21,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881182759] [2024-06-28 04:29:21,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881182759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:21,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:21,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:29:21,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132894147] [2024-06-28 04:29:21,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:21,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:29:21,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:21,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:29:21,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:29:21,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:29:21,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 614 transitions, 9284 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:21,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:21,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:29:21,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:23,105 INFO L124 PetriNetUnfolderBase]: 4311/6879 cut-off events. [2024-06-28 04:29:23,105 INFO L125 PetriNetUnfolderBase]: For 819168/819168 co-relation queries the response was YES. [2024-06-28 04:29:23,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61490 conditions, 6879 events. 4311/6879 cut-off events. For 819168/819168 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 44201 event pairs, 885 based on Foata normal form. 4/6873 useless extension candidates. Maximal degree in co-relation 61298. Up to 5736 conditions per place. [2024-06-28 04:29:23,213 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 455 selfloop transitions, 189 changer transitions 0/649 dead transitions. [2024-06-28 04:29:23,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 649 transitions, 11483 flow [2024-06-28 04:29:23,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:29:23,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:29:23,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-28 04:29:23,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48509485094850946 [2024-06-28 04:29:23,214 INFO L175 Difference]: Start difference. First operand has 434 places, 614 transitions, 9284 flow. Second operand 9 states and 179 transitions. [2024-06-28 04:29:23,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 649 transitions, 11483 flow [2024-06-28 04:29:26,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 649 transitions, 11265 flow, removed 53 selfloop flow, removed 4 redundant places. [2024-06-28 04:29:26,872 INFO L231 Difference]: Finished difference. Result has 439 places, 617 transitions, 9537 flow [2024-06-28 04:29:26,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9068, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9537, PETRI_PLACES=439, PETRI_TRANSITIONS=617} [2024-06-28 04:29:26,872 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 397 predicate places. [2024-06-28 04:29:26,872 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 617 transitions, 9537 flow [2024-06-28 04:29:26,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:26,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:26,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:26,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 04:29:26,873 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:29:26,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:26,873 INFO L85 PathProgramCache]: Analyzing trace with hash 47000468, now seen corresponding path program 7 times [2024-06-28 04:29:26,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:26,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249340576] [2024-06-28 04:29:26,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:26,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:27,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:27,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:27,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249340576] [2024-06-28 04:29:27,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249340576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:27,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:27,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:29:27,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821701745] [2024-06-28 04:29:27,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:27,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:29:27,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:27,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:29:27,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:29:27,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:29:27,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 617 transitions, 9537 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:27,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:27,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:29:27,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:29,684 INFO L124 PetriNetUnfolderBase]: 4321/6909 cut-off events. [2024-06-28 04:29:29,685 INFO L125 PetriNetUnfolderBase]: For 822452/822452 co-relation queries the response was YES. [2024-06-28 04:29:29,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62364 conditions, 6909 events. 4321/6909 cut-off events. For 822452/822452 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 44564 event pairs, 914 based on Foata normal form. 2/6901 useless extension candidates. Maximal degree in co-relation 62170. Up to 6306 conditions per place. [2024-06-28 04:29:29,787 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 489 selfloop transitions, 150 changer transitions 0/644 dead transitions. [2024-06-28 04:29:29,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 644 transitions, 11076 flow [2024-06-28 04:29:29,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:29:29,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:29:29,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 04:29:29,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45528455284552843 [2024-06-28 04:29:29,788 INFO L175 Difference]: Start difference. First operand has 439 places, 617 transitions, 9537 flow. Second operand 9 states and 168 transitions. [2024-06-28 04:29:29,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 644 transitions, 11076 flow [2024-06-28 04:29:34,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 644 transitions, 10535 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-28 04:29:34,417 INFO L231 Difference]: Finished difference. Result has 441 places, 623 transitions, 9496 flow [2024-06-28 04:29:34,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8996, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9496, PETRI_PLACES=441, PETRI_TRANSITIONS=623} [2024-06-28 04:29:34,418 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 399 predicate places. [2024-06-28 04:29:34,418 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 623 transitions, 9496 flow [2024-06-28 04:29:34,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:34,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:34,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:34,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 04:29:34,419 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:29:34,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:34,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1943552355, now seen corresponding path program 9 times [2024-06-28 04:29:34,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:34,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468840312] [2024-06-28 04:29:34,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:34,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:34,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:35,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:35,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:35,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468840312] [2024-06-28 04:29:35,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468840312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:35,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:35,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:29:35,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693754821] [2024-06-28 04:29:35,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:35,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:29:35,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:35,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:29:35,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:29:35,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:29:35,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 623 transitions, 9496 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:35,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:35,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:29:35,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:37,337 INFO L124 PetriNetUnfolderBase]: 4373/6993 cut-off events. [2024-06-28 04:29:37,337 INFO L125 PetriNetUnfolderBase]: For 873835/873835 co-relation queries the response was YES. [2024-06-28 04:29:37,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63429 conditions, 6993 events. 4373/6993 cut-off events. For 873835/873835 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 45161 event pairs, 858 based on Foata normal form. 4/6987 useless extension candidates. Maximal degree in co-relation 63234. Up to 6296 conditions per place. [2024-06-28 04:29:37,440 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 536 selfloop transitions, 120 changer transitions 0/661 dead transitions. [2024-06-28 04:29:37,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 661 transitions, 11372 flow [2024-06-28 04:29:37,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:29:37,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:29:37,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-06-28 04:29:37,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44567627494456763 [2024-06-28 04:29:37,441 INFO L175 Difference]: Start difference. First operand has 441 places, 623 transitions, 9496 flow. Second operand 11 states and 201 transitions. [2024-06-28 04:29:37,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 661 transitions, 11372 flow [2024-06-28 04:29:42,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 661 transitions, 10924 flow, removed 78 selfloop flow, removed 7 redundant places. [2024-06-28 04:29:42,274 INFO L231 Difference]: Finished difference. Result has 445 places, 629 transitions, 9428 flow [2024-06-28 04:29:42,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9048, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9428, PETRI_PLACES=445, PETRI_TRANSITIONS=629} [2024-06-28 04:29:42,275 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 403 predicate places. [2024-06-28 04:29:42,275 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 629 transitions, 9428 flow [2024-06-28 04:29:42,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:42,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:42,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:42,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 04:29:42,275 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:29:42,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:42,276 INFO L85 PathProgramCache]: Analyzing trace with hash 556481337, now seen corresponding path program 10 times [2024-06-28 04:29:42,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:42,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382028104] [2024-06-28 04:29:42,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:42,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:43,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:43,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:43,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382028104] [2024-06-28 04:29:43,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382028104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:43,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:43,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:29:43,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54390311] [2024-06-28 04:29:43,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:43,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:29:43,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:43,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:29:43,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:29:43,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:29:43,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 629 transitions, 9428 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:43,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:43,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:29:43,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:45,027 INFO L124 PetriNetUnfolderBase]: 4361/6977 cut-off events. [2024-06-28 04:29:45,027 INFO L125 PetriNetUnfolderBase]: For 865110/865110 co-relation queries the response was YES. [2024-06-28 04:29:45,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62947 conditions, 6977 events. 4361/6977 cut-off events. For 865110/865110 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 45104 event pairs, 872 based on Foata normal form. 4/6971 useless extension candidates. Maximal degree in co-relation 62751. Up to 6288 conditions per place. [2024-06-28 04:29:45,142 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 533 selfloop transitions, 120 changer transitions 0/658 dead transitions. [2024-06-28 04:29:45,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 658 transitions, 10952 flow [2024-06-28 04:29:45,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:29:45,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:29:45,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-28 04:29:45,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44878048780487806 [2024-06-28 04:29:45,144 INFO L175 Difference]: Start difference. First operand has 445 places, 629 transitions, 9428 flow. Second operand 10 states and 184 transitions. [2024-06-28 04:29:45,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 658 transitions, 10952 flow [2024-06-28 04:29:49,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 658 transitions, 10712 flow, removed 50 selfloop flow, removed 7 redundant places. [2024-06-28 04:29:49,848 INFO L231 Difference]: Finished difference. Result has 448 places, 629 transitions, 9435 flow [2024-06-28 04:29:49,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9188, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9435, PETRI_PLACES=448, PETRI_TRANSITIONS=629} [2024-06-28 04:29:49,849 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 406 predicate places. [2024-06-28 04:29:49,849 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 629 transitions, 9435 flow [2024-06-28 04:29:49,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:49,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:49,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:49,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 04:29:49,850 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:29:49,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:49,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1301408768, now seen corresponding path program 8 times [2024-06-28 04:29:49,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:49,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964739061] [2024-06-28 04:29:49,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:49,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:50,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:50,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:50,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964739061] [2024-06-28 04:29:50,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964739061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:50,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:50,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:29:50,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823599305] [2024-06-28 04:29:50,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:50,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:29:50,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:50,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:29:50,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:29:50,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:29:50,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 629 transitions, 9435 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:50,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:50,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:29:50,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:52,665 INFO L124 PetriNetUnfolderBase]: 4371/6985 cut-off events. [2024-06-28 04:29:52,666 INFO L125 PetriNetUnfolderBase]: For 865777/865777 co-relation queries the response was YES. [2024-06-28 04:29:52,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63390 conditions, 6985 events. 4371/6985 cut-off events. For 865777/865777 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 45150 event pairs, 920 based on Foata normal form. 2/6977 useless extension candidates. Maximal degree in co-relation 63192. Up to 6376 conditions per place. [2024-06-28 04:29:52,788 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 494 selfloop transitions, 157 changer transitions 0/656 dead transitions. [2024-06-28 04:29:52,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 656 transitions, 11003 flow [2024-06-28 04:29:52,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:29:52,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:29:52,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 04:29:52,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45257452574525747 [2024-06-28 04:29:52,789 INFO L175 Difference]: Start difference. First operand has 448 places, 629 transitions, 9435 flow. Second operand 9 states and 167 transitions. [2024-06-28 04:29:52,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 656 transitions, 11003 flow [2024-06-28 04:29:58,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 656 transitions, 10792 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 04:29:59,005 INFO L231 Difference]: Finished difference. Result has 449 places, 635 transitions, 9744 flow [2024-06-28 04:29:59,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9224, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9744, PETRI_PLACES=449, PETRI_TRANSITIONS=635} [2024-06-28 04:29:59,006 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 407 predicate places. [2024-06-28 04:29:59,006 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 635 transitions, 9744 flow [2024-06-28 04:29:59,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:59,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:59,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:59,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 04:29:59,006 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:29:59,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:59,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1586418428, now seen corresponding path program 9 times [2024-06-28 04:29:59,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:59,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564176274] [2024-06-28 04:29:59,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:59,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:59,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:59,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:59,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564176274] [2024-06-28 04:29:59,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564176274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:59,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:59,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:29:59,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257662399] [2024-06-28 04:29:59,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:59,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:29:59,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:59,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:29:59,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:30:00,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:30:00,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 635 transitions, 9744 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:00,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:00,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:30:00,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:02,019 INFO L124 PetriNetUnfolderBase]: 4397/7015 cut-off events. [2024-06-28 04:30:02,019 INFO L125 PetriNetUnfolderBase]: For 902787/902787 co-relation queries the response was YES. [2024-06-28 04:30:02,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64880 conditions, 7015 events. 4397/7015 cut-off events. For 902787/902787 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 45240 event pairs, 912 based on Foata normal form. 2/7007 useless extension candidates. Maximal degree in co-relation 64681. Up to 6228 conditions per place. [2024-06-28 04:30:02,142 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 446 selfloop transitions, 234 changer transitions 0/685 dead transitions. [2024-06-28 04:30:02,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 685 transitions, 12140 flow [2024-06-28 04:30:02,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:30:02,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:30:02,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 208 transitions. [2024-06-28 04:30:02,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4611973392461197 [2024-06-28 04:30:02,143 INFO L175 Difference]: Start difference. First operand has 449 places, 635 transitions, 9744 flow. Second operand 11 states and 208 transitions. [2024-06-28 04:30:02,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 685 transitions, 12140 flow [2024-06-28 04:30:08,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 685 transitions, 11672 flow, removed 81 selfloop flow, removed 7 redundant places. [2024-06-28 04:30:08,861 INFO L231 Difference]: Finished difference. Result has 454 places, 654 transitions, 10350 flow [2024-06-28 04:30:08,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9276, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10350, PETRI_PLACES=454, PETRI_TRANSITIONS=654} [2024-06-28 04:30:08,861 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 412 predicate places. [2024-06-28 04:30:08,861 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 654 transitions, 10350 flow [2024-06-28 04:30:08,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:08,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:08,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:08,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 04:30:08,862 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:30:08,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:08,862 INFO L85 PathProgramCache]: Analyzing trace with hash -294028494, now seen corresponding path program 10 times [2024-06-28 04:30:08,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:08,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299470602] [2024-06-28 04:30:08,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:08,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:09,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:09,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:09,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299470602] [2024-06-28 04:30:09,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299470602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:09,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:09,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:30:09,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995549014] [2024-06-28 04:30:09,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:09,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:30:09,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:09,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:30:09,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:30:09,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:30:09,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 654 transitions, 10350 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:09,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:09,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:30:09,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:11,923 INFO L124 PetriNetUnfolderBase]: 4420/7049 cut-off events. [2024-06-28 04:30:11,923 INFO L125 PetriNetUnfolderBase]: For 941821/941821 co-relation queries the response was YES. [2024-06-28 04:30:12,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66672 conditions, 7049 events. 4420/7049 cut-off events. For 941821/941821 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 45524 event pairs, 908 based on Foata normal form. 3/7042 useless extension candidates. Maximal degree in co-relation 66471. Up to 6255 conditions per place. [2024-06-28 04:30:12,041 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 437 selfloop transitions, 250 changer transitions 0/692 dead transitions. [2024-06-28 04:30:12,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 692 transitions, 12650 flow [2024-06-28 04:30:12,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:30:12,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:30:12,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-28 04:30:12,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44789356984478934 [2024-06-28 04:30:12,042 INFO L175 Difference]: Start difference. First operand has 454 places, 654 transitions, 10350 flow. Second operand 11 states and 202 transitions. [2024-06-28 04:30:12,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 692 transitions, 12650 flow [2024-06-28 04:30:18,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 692 transitions, 12186 flow, removed 137 selfloop flow, removed 7 redundant places. [2024-06-28 04:30:18,150 INFO L231 Difference]: Finished difference. Result has 458 places, 664 transitions, 10768 flow [2024-06-28 04:30:18,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9952, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10768, PETRI_PLACES=458, PETRI_TRANSITIONS=664} [2024-06-28 04:30:18,151 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 416 predicate places. [2024-06-28 04:30:18,151 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 664 transitions, 10768 flow [2024-06-28 04:30:18,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:18,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:18,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:18,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 04:30:18,151 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:30:18,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:18,151 INFO L85 PathProgramCache]: Analyzing trace with hash 50719538, now seen corresponding path program 11 times [2024-06-28 04:30:18,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:18,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271301438] [2024-06-28 04:30:18,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:18,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:19,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:19,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:19,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271301438] [2024-06-28 04:30:19,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271301438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:19,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:19,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:30:19,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716595006] [2024-06-28 04:30:19,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:19,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:30:19,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:19,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:30:19,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:30:19,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:30:19,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 664 transitions, 10768 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:19,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:19,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:30:19,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:21,316 INFO L124 PetriNetUnfolderBase]: 4430/7071 cut-off events. [2024-06-28 04:30:21,316 INFO L125 PetriNetUnfolderBase]: For 915441/915441 co-relation queries the response was YES. [2024-06-28 04:30:21,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65607 conditions, 7071 events. 4430/7071 cut-off events. For 915441/915441 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 45733 event pairs, 924 based on Foata normal form. 2/7063 useless extension candidates. Maximal degree in co-relation 65405. Up to 6634 conditions per place. [2024-06-28 04:30:21,439 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 603 selfloop transitions, 81 changer transitions 0/689 dead transitions. [2024-06-28 04:30:21,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 689 transitions, 12416 flow [2024-06-28 04:30:21,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:30:21,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:30:21,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 04:30:21,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 04:30:21,440 INFO L175 Difference]: Start difference. First operand has 458 places, 664 transitions, 10768 flow. Second operand 9 states and 162 transitions. [2024-06-28 04:30:21,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 689 transitions, 12416 flow [2024-06-28 04:30:27,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 689 transitions, 11889 flow, removed 81 selfloop flow, removed 7 redundant places. [2024-06-28 04:30:27,255 INFO L231 Difference]: Finished difference. Result has 460 places, 670 transitions, 10627 flow [2024-06-28 04:30:27,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10247, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10627, PETRI_PLACES=460, PETRI_TRANSITIONS=670} [2024-06-28 04:30:27,256 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 418 predicate places. [2024-06-28 04:30:27,256 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 670 transitions, 10627 flow [2024-06-28 04:30:27,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:27,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:27,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:27,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 04:30:27,256 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:30:27,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:27,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1697375245, now seen corresponding path program 11 times [2024-06-28 04:30:27,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:27,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465960346] [2024-06-28 04:30:27,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:27,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:28,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:28,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:28,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465960346] [2024-06-28 04:30:28,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465960346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:28,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:28,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:30:28,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372551737] [2024-06-28 04:30:28,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:28,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:30:28,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:28,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:30:28,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:30:28,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:30:28,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 670 transitions, 10627 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:28,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:28,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:30:28,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:30,042 INFO L124 PetriNetUnfolderBase]: 4450/7089 cut-off events. [2024-06-28 04:30:30,043 INFO L125 PetriNetUnfolderBase]: For 944387/944387 co-relation queries the response was YES. [2024-06-28 04:30:30,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65432 conditions, 7089 events. 4450/7089 cut-off events. For 944387/944387 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 45822 event pairs, 910 based on Foata normal form. 4/7090 useless extension candidates. Maximal degree in co-relation 65229. Up to 6713 conditions per place. [2024-06-28 04:30:30,163 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 643 selfloop transitions, 47 changer transitions 0/695 dead transitions. [2024-06-28 04:30:30,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 695 transitions, 12173 flow [2024-06-28 04:30:30,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:30:30,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:30:30,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 04:30:30,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44173441734417346 [2024-06-28 04:30:30,164 INFO L175 Difference]: Start difference. First operand has 460 places, 670 transitions, 10627 flow. Second operand 9 states and 163 transitions. [2024-06-28 04:30:30,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 695 transitions, 12173 flow [2024-06-28 04:30:35,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 695 transitions, 11869 flow, removed 75 selfloop flow, removed 7 redundant places. [2024-06-28 04:30:35,801 INFO L231 Difference]: Finished difference. Result has 462 places, 673 transitions, 10493 flow [2024-06-28 04:30:35,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10323, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10493, PETRI_PLACES=462, PETRI_TRANSITIONS=673} [2024-06-28 04:30:35,802 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 420 predicate places. [2024-06-28 04:30:35,802 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 673 transitions, 10493 flow [2024-06-28 04:30:35,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:35,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:35,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:35,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 04:30:35,802 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:30:35,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:35,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1685193883, now seen corresponding path program 12 times [2024-06-28 04:30:35,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:35,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720977200] [2024-06-28 04:30:35,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:35,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:36,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:36,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:36,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720977200] [2024-06-28 04:30:36,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720977200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:36,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:36,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:30:36,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437010507] [2024-06-28 04:30:36,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:36,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:30:36,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:36,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:30:36,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:30:36,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:30:36,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 673 transitions, 10493 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:36,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:36,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:30:36,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:38,566 INFO L124 PetriNetUnfolderBase]: 4470/7123 cut-off events. [2024-06-28 04:30:38,567 INFO L125 PetriNetUnfolderBase]: For 956000/956000 co-relation queries the response was YES. [2024-06-28 04:30:38,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65665 conditions, 7123 events. 4470/7123 cut-off events. For 956000/956000 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 46007 event pairs, 864 based on Foata normal form. 4/7117 useless extension candidates. Maximal degree in co-relation 65461. Up to 5910 conditions per place. [2024-06-28 04:30:38,680 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 487 selfloop transitions, 216 changer transitions 0/708 dead transitions. [2024-06-28 04:30:38,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 708 transitions, 12414 flow [2024-06-28 04:30:38,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:30:38,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:30:38,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-28 04:30:38,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742547425474255 [2024-06-28 04:30:38,682 INFO L175 Difference]: Start difference. First operand has 462 places, 673 transitions, 10493 flow. Second operand 9 states and 175 transitions. [2024-06-28 04:30:38,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 708 transitions, 12414 flow [2024-06-28 04:30:44,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 708 transitions, 12243 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 04:30:44,481 INFO L231 Difference]: Finished difference. Result has 464 places, 676 transitions, 10831 flow [2024-06-28 04:30:44,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10322, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10831, PETRI_PLACES=464, PETRI_TRANSITIONS=676} [2024-06-28 04:30:44,481 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 422 predicate places. [2024-06-28 04:30:44,481 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 676 transitions, 10831 flow [2024-06-28 04:30:44,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:44,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:44,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:44,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 04:30:44,482 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:30:44,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:44,483 INFO L85 PathProgramCache]: Analyzing trace with hash -928574380, now seen corresponding path program 12 times [2024-06-28 04:30:44,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:44,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577837151] [2024-06-28 04:30:44,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:44,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:45,443 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 04:30:45,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:45,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577837151] [2024-06-28 04:30:45,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577837151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:45,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:45,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:30:45,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850297202] [2024-06-28 04:30:45,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:45,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:30:45,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:45,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:30:45,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:30:45,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:30:45,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 676 transitions, 10831 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:45,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:45,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:30:45,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:47,487 INFO L124 PetriNetUnfolderBase]: 4480/7155 cut-off events. [2024-06-28 04:30:47,487 INFO L125 PetriNetUnfolderBase]: For 960272/960272 co-relation queries the response was YES. [2024-06-28 04:30:47,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66549 conditions, 7155 events. 4480/7155 cut-off events. For 960272/960272 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 46335 event pairs, 924 based on Foata normal form. 2/7147 useless extension candidates. Maximal degree in co-relation 66344. Up to 6679 conditions per place. [2024-06-28 04:30:47,604 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 597 selfloop transitions, 99 changer transitions 0/701 dead transitions. [2024-06-28 04:30:47,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 701 transitions, 12507 flow [2024-06-28 04:30:47,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:30:47,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:30:47,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 04:30:47,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43360433604336046 [2024-06-28 04:30:47,605 INFO L175 Difference]: Start difference. First operand has 464 places, 676 transitions, 10831 flow. Second operand 9 states and 160 transitions. [2024-06-28 04:30:47,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 701 transitions, 12507 flow [2024-06-28 04:30:54,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 701 transitions, 12141 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 04:30:54,207 INFO L231 Difference]: Finished difference. Result has 467 places, 682 transitions, 10869 flow [2024-06-28 04:30:54,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10465, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10869, PETRI_PLACES=467, PETRI_TRANSITIONS=682} [2024-06-28 04:30:54,208 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 425 predicate places. [2024-06-28 04:30:54,208 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 682 transitions, 10869 flow [2024-06-28 04:30:54,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:54,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:54,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:54,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 04:30:54,209 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:30:54,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:54,209 INFO L85 PathProgramCache]: Analyzing trace with hash 955978492, now seen corresponding path program 13 times [2024-06-28 04:30:54,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:54,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782357799] [2024-06-28 04:30:54,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:54,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:55,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:55,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:55,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782357799] [2024-06-28 04:30:55,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782357799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:55,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:55,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:30:55,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046930216] [2024-06-28 04:30:55,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:55,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:30:55,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:55,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:30:55,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:30:55,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:30:55,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 682 transitions, 10869 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:55,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:55,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:30:55,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:57,533 INFO L124 PetriNetUnfolderBase]: 4490/7167 cut-off events. [2024-06-28 04:30:57,533 INFO L125 PetriNetUnfolderBase]: For 974493/974493 co-relation queries the response was YES. [2024-06-28 04:30:57,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66375 conditions, 7167 events. 4490/7167 cut-off events. For 974493/974493 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 46400 event pairs, 914 based on Foata normal form. 2/7159 useless extension candidates. Maximal degree in co-relation 66169. Up to 6693 conditions per place. [2024-06-28 04:30:57,651 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 606 selfloop transitions, 100 changer transitions 0/711 dead transitions. [2024-06-28 04:30:57,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 711 transitions, 12611 flow [2024-06-28 04:30:57,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:30:57,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:30:57,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-28 04:30:57,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212860310421286 [2024-06-28 04:30:57,653 INFO L175 Difference]: Start difference. First operand has 467 places, 682 transitions, 10869 flow. Second operand 11 states and 190 transitions. [2024-06-28 04:30:57,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 711 transitions, 12611 flow [2024-06-28 04:31:04,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 711 transitions, 12315 flow, removed 72 selfloop flow, removed 6 redundant places. [2024-06-28 04:31:04,295 INFO L231 Difference]: Finished difference. Result has 472 places, 688 transitions, 11003 flow [2024-06-28 04:31:04,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10573, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=582, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11003, PETRI_PLACES=472, PETRI_TRANSITIONS=688} [2024-06-28 04:31:04,296 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 430 predicate places. [2024-06-28 04:31:04,296 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 688 transitions, 11003 flow [2024-06-28 04:31:04,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:04,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:31:04,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:31:04,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 04:31:04,296 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:31:04,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:31:04,296 INFO L85 PathProgramCache]: Analyzing trace with hash 955978647, now seen corresponding path program 13 times [2024-06-28 04:31:04,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:31:04,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164163371] [2024-06-28 04:31:04,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:31:04,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:31:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:31:05,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:31:05,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:31:05,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164163371] [2024-06-28 04:31:05,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164163371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:31:05,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:31:05,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:31:05,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774257887] [2024-06-28 04:31:05,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:31:05,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:31:05,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:31:05,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:31:05,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:31:05,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:31:05,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 688 transitions, 11003 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:05,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:31:05,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:31:05,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:31:07,265 INFO L124 PetriNetUnfolderBase]: 4574/7291 cut-off events. [2024-06-28 04:31:07,265 INFO L125 PetriNetUnfolderBase]: For 1057069/1057069 co-relation queries the response was YES. [2024-06-28 04:31:07,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68406 conditions, 7291 events. 4574/7291 cut-off events. For 1057069/1057069 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 47353 event pairs, 864 based on Foata normal form. 4/7285 useless extension candidates. Maximal degree in co-relation 68199. Up to 6433 conditions per place. [2024-06-28 04:31:07,388 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 585 selfloop transitions, 146 changer transitions 0/736 dead transitions. [2024-06-28 04:31:07,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 736 transitions, 13438 flow [2024-06-28 04:31:07,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:31:07,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:31:07,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-28 04:31:07,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567627494456763 [2024-06-28 04:31:07,389 INFO L175 Difference]: Start difference. First operand has 472 places, 688 transitions, 11003 flow. Second operand 11 states and 206 transitions. [2024-06-28 04:31:07,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 736 transitions, 13438 flow [2024-06-28 04:31:13,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 736 transitions, 13084 flow, removed 81 selfloop flow, removed 9 redundant places. [2024-06-28 04:31:13,173 INFO L231 Difference]: Finished difference. Result has 475 places, 697 transitions, 11187 flow [2024-06-28 04:31:13,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10649, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11187, PETRI_PLACES=475, PETRI_TRANSITIONS=697} [2024-06-28 04:31:13,174 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 433 predicate places. [2024-06-28 04:31:13,174 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 697 transitions, 11187 flow [2024-06-28 04:31:13,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:13,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:31:13,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:31:13,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 04:31:13,174 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:31:13,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:31:13,175 INFO L85 PathProgramCache]: Analyzing trace with hash -20147519, now seen corresponding path program 14 times [2024-06-28 04:31:13,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:31:13,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69778895] [2024-06-28 04:31:13,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:31:13,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:31:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:31:13,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:31:13,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:31:13,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69778895] [2024-06-28 04:31:13,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69778895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:31:13,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:31:13,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:31:13,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718391968] [2024-06-28 04:31:13,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:31:13,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:31:13,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:31:13,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:31:13,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:31:14,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:31:14,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 697 transitions, 11187 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:14,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:31:14,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:31:14,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:31:16,236 INFO L124 PetriNetUnfolderBase]: 4626/7349 cut-off events. [2024-06-28 04:31:16,236 INFO L125 PetriNetUnfolderBase]: For 1107172/1107172 co-relation queries the response was YES. [2024-06-28 04:31:16,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69960 conditions, 7349 events. 4626/7349 cut-off events. For 1107172/1107172 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 47697 event pairs, 962 based on Foata normal form. 4/7350 useless extension candidates. Maximal degree in co-relation 69751. Up to 6948 conditions per place. [2024-06-28 04:31:16,370 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 680 selfloop transitions, 42 changer transitions 0/727 dead transitions. [2024-06-28 04:31:16,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 727 transitions, 13142 flow [2024-06-28 04:31:16,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:31:16,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:31:16,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-28 04:31:16,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212860310421286 [2024-06-28 04:31:16,371 INFO L175 Difference]: Start difference. First operand has 475 places, 697 transitions, 11187 flow. Second operand 11 states and 190 transitions. [2024-06-28 04:31:16,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 727 transitions, 13142 flow [2024-06-28 04:31:23,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 727 transitions, 12779 flow, removed 57 selfloop flow, removed 7 redundant places. [2024-06-28 04:31:23,433 INFO L231 Difference]: Finished difference. Result has 480 places, 703 transitions, 11095 flow [2024-06-28 04:31:23,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10850, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=655, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11095, PETRI_PLACES=480, PETRI_TRANSITIONS=703} [2024-06-28 04:31:23,434 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 438 predicate places. [2024-06-28 04:31:23,434 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 703 transitions, 11095 flow [2024-06-28 04:31:23,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:23,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:31:23,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:31:23,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 04:31:23,434 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:31:23,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:31:23,434 INFO L85 PathProgramCache]: Analyzing trace with hash -928574225, now seen corresponding path program 15 times [2024-06-28 04:31:23,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:31:23,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252769067] [2024-06-28 04:31:23,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:31:23,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:31:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:31:24,211 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 04:31:24,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:31:24,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252769067] [2024-06-28 04:31:24,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252769067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:31:24,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:31:24,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:31:24,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503934736] [2024-06-28 04:31:24,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:31:24,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:31:24,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:31:24,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:31:24,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:31:24,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:31:24,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 703 transitions, 11095 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:24,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:31:24,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:31:24,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:31:26,403 INFO L124 PetriNetUnfolderBase]: 4614/7345 cut-off events. [2024-06-28 04:31:26,403 INFO L125 PetriNetUnfolderBase]: For 1090648/1090648 co-relation queries the response was YES. [2024-06-28 04:31:26,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68961 conditions, 7345 events. 4614/7345 cut-off events. For 1090648/1090648 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 47680 event pairs, 866 based on Foata normal form. 4/7341 useless extension candidates. Maximal degree in co-relation 68750. Up to 6465 conditions per place. [2024-06-28 04:31:26,543 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 579 selfloop transitions, 150 changer transitions 0/734 dead transitions. [2024-06-28 04:31:26,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 734 transitions, 13245 flow [2024-06-28 04:31:26,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:31:26,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:31:26,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-28 04:31:26,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46612466124661245 [2024-06-28 04:31:26,544 INFO L175 Difference]: Start difference. First operand has 480 places, 703 transitions, 11095 flow. Second operand 9 states and 172 transitions. [2024-06-28 04:31:26,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 734 transitions, 13245 flow [2024-06-28 04:31:33,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 734 transitions, 13107 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-28 04:31:33,903 INFO L231 Difference]: Finished difference. Result has 481 places, 703 transitions, 11264 flow [2024-06-28 04:31:33,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10957, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11264, PETRI_PLACES=481, PETRI_TRANSITIONS=703} [2024-06-28 04:31:33,903 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 439 predicate places. [2024-06-28 04:31:33,903 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 703 transitions, 11264 flow [2024-06-28 04:31:33,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:33,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:31:33,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:31:33,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 04:31:33,903 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:31:33,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:31:33,904 INFO L85 PathProgramCache]: Analyzing trace with hash 970060707, now seen corresponding path program 16 times [2024-06-28 04:31:33,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:31:33,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459802916] [2024-06-28 04:31:33,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:31:33,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:31:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:31:34,710 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 04:31:34,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:31:34,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459802916] [2024-06-28 04:31:34,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459802916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:31:34,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:31:34,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:31:34,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136441753] [2024-06-28 04:31:34,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:31:34,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:31:34,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:31:34,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:31:34,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:31:34,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:31:34,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 703 transitions, 11264 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:34,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:31:34,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:31:34,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:31:37,035 INFO L124 PetriNetUnfolderBase]: 4644/7379 cut-off events. [2024-06-28 04:31:37,035 INFO L125 PetriNetUnfolderBase]: For 1110512/1110512 co-relation queries the response was YES. [2024-06-28 04:31:37,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69813 conditions, 7379 events. 4644/7379 cut-off events. For 1110512/1110512 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 47920 event pairs, 964 based on Foata normal form. 4/7380 useless extension candidates. Maximal degree in co-relation 69601. Up to 6954 conditions per place. [2024-06-28 04:31:37,172 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 685 selfloop transitions, 48 changer transitions 0/738 dead transitions. [2024-06-28 04:31:37,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 738 transitions, 13241 flow [2024-06-28 04:31:37,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 04:31:37,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 04:31:37,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 221 transitions. [2024-06-28 04:31:37,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-28 04:31:37,173 INFO L175 Difference]: Start difference. First operand has 481 places, 703 transitions, 11264 flow. Second operand 13 states and 221 transitions. [2024-06-28 04:31:37,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 738 transitions, 13241 flow [2024-06-28 04:31:43,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 738 transitions, 12869 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-28 04:31:43,913 INFO L231 Difference]: Finished difference. Result has 486 places, 709 transitions, 11117 flow [2024-06-28 04:31:43,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10908, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11117, PETRI_PLACES=486, PETRI_TRANSITIONS=709} [2024-06-28 04:31:43,914 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 444 predicate places. [2024-06-28 04:31:43,914 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 709 transitions, 11117 flow [2024-06-28 04:31:43,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:43,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:31:43,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:31:43,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 04:31:43,915 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:31:43,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:31:43,915 INFO L85 PathProgramCache]: Analyzing trace with hash -936842855, now seen corresponding path program 17 times [2024-06-28 04:31:43,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:31:43,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498040559] [2024-06-28 04:31:43,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:31:43,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:31:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:31:44,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:31:44,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:31:44,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498040559] [2024-06-28 04:31:44,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498040559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:31:44,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:31:44,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:31:44,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800113875] [2024-06-28 04:31:44,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:31:44,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:31:44,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:31:44,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:31:44,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:31:44,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:31:44,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 709 transitions, 11117 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:44,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:31:44,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:31:44,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:31:46,994 INFO L124 PetriNetUnfolderBase]: 4632/7387 cut-off events. [2024-06-28 04:31:46,994 INFO L125 PetriNetUnfolderBase]: For 1093851/1093851 co-relation queries the response was YES. [2024-06-28 04:31:47,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68778 conditions, 7387 events. 4632/7387 cut-off events. For 1093851/1093851 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 48121 event pairs, 882 based on Foata normal form. 4/7381 useless extension candidates. Maximal degree in co-relation 68566. Up to 6479 conditions per place. [2024-06-28 04:31:47,124 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 583 selfloop transitions, 162 changer transitions 0/750 dead transitions. [2024-06-28 04:31:47,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 750 transitions, 13163 flow [2024-06-28 04:31:47,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:31:47,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:31:47,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 220 transitions. [2024-06-28 04:31:47,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44715447154471544 [2024-06-28 04:31:47,125 INFO L175 Difference]: Start difference. First operand has 486 places, 709 transitions, 11117 flow. Second operand 12 states and 220 transitions. [2024-06-28 04:31:47,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 750 transitions, 13163 flow [2024-06-28 04:31:54,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 750 transitions, 12989 flow, removed 39 selfloop flow, removed 10 redundant places. [2024-06-28 04:31:54,552 INFO L231 Difference]: Finished difference. Result has 488 places, 709 transitions, 11273 flow [2024-06-28 04:31:54,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10943, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=709, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11273, PETRI_PLACES=488, PETRI_TRANSITIONS=709} [2024-06-28 04:31:54,553 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 446 predicate places. [2024-06-28 04:31:54,553 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 709 transitions, 11273 flow [2024-06-28 04:31:54,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:54,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:31:54,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:31:54,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 04:31:54,554 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:31:54,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:31:54,554 INFO L85 PathProgramCache]: Analyzing trace with hash -928277710, now seen corresponding path program 14 times [2024-06-28 04:31:54,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:31:54,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218969042] [2024-06-28 04:31:54,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:31:54,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:31:54,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:31:55,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:31:55,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:31:55,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218969042] [2024-06-28 04:31:55,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218969042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:31:55,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:31:55,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:31:55,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029576474] [2024-06-28 04:31:55,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:31:55,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:31:55,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:31:55,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:31:55,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:31:55,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:31:55,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 709 transitions, 11273 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:55,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:31:55,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:31:55,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:31:57,813 INFO L124 PetriNetUnfolderBase]: 4637/7400 cut-off events. [2024-06-28 04:31:57,814 INFO L125 PetriNetUnfolderBase]: For 1089001/1089001 co-relation queries the response was YES. [2024-06-28 04:31:57,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69266 conditions, 7400 events. 4637/7400 cut-off events. For 1089001/1089001 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 48225 event pairs, 952 based on Foata normal form. 1/7391 useless extension candidates. Maximal degree in co-relation 69053. Up to 6874 conditions per place. [2024-06-28 04:31:57,954 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 605 selfloop transitions, 123 changer transitions 0/733 dead transitions. [2024-06-28 04:31:57,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 733 transitions, 12960 flow [2024-06-28 04:31:57,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:31:57,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:31:57,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-28 04:31:57,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292682926829268 [2024-06-28 04:31:57,955 INFO L175 Difference]: Start difference. First operand has 488 places, 709 transitions, 11273 flow. Second operand 10 states and 176 transitions. [2024-06-28 04:31:57,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 733 transitions, 12960 flow [2024-06-28 04:32:04,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 733 transitions, 12615 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 04:32:04,595 INFO L231 Difference]: Finished difference. Result has 488 places, 713 transitions, 11353 flow [2024-06-28 04:32:04,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10928, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=709, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=586, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11353, PETRI_PLACES=488, PETRI_TRANSITIONS=713} [2024-06-28 04:32:04,595 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 446 predicate places. [2024-06-28 04:32:04,595 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 713 transitions, 11353 flow [2024-06-28 04:32:04,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:32:04,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:32:04,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:32:04,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 04:32:04,595 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:32:04,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:32:04,596 INFO L85 PathProgramCache]: Analyzing trace with hash -928128755, now seen corresponding path program 18 times [2024-06-28 04:32:04,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:32:04,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70723179] [2024-06-28 04:32:04,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:32:04,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:32:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:32:05,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:32:05,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:32:05,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70723179] [2024-06-28 04:32:05,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70723179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:32:05,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:32:05,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:32:05,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932772322] [2024-06-28 04:32:05,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:32:05,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:32:05,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:32:05,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:32:05,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:32:05,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:32:05,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 713 transitions, 11353 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:32:05,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:32:05,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:32:05,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:32:07,543 INFO L124 PetriNetUnfolderBase]: 4625/7364 cut-off events. [2024-06-28 04:32:07,544 INFO L125 PetriNetUnfolderBase]: For 1099643/1099643 co-relation queries the response was YES. [2024-06-28 04:32:07,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68486 conditions, 7364 events. 4625/7364 cut-off events. For 1099643/1099643 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 47976 event pairs, 936 based on Foata normal form. 4/7365 useless extension candidates. Maximal degree in co-relation 68271. Up to 6989 conditions per place. [2024-06-28 04:32:07,685 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 690 selfloop transitions, 38 changer transitions 0/733 dead transitions. [2024-06-28 04:32:07,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 733 transitions, 12903 flow [2024-06-28 04:32:07,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:32:07,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:32:07,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 04:32:07,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4363143631436314 [2024-06-28 04:32:07,687 INFO L175 Difference]: Start difference. First operand has 488 places, 713 transitions, 11353 flow. Second operand 9 states and 161 transitions. [2024-06-28 04:32:07,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 733 transitions, 12903 flow [2024-06-28 04:32:14,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 733 transitions, 12567 flow, removed 65 selfloop flow, removed 7 redundant places. [2024-06-28 04:32:14,966 INFO L231 Difference]: Finished difference. Result has 490 places, 713 transitions, 11099 flow [2024-06-28 04:32:14,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11017, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=675, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11099, PETRI_PLACES=490, PETRI_TRANSITIONS=713} [2024-06-28 04:32:14,967 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 448 predicate places. [2024-06-28 04:32:14,967 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 713 transitions, 11099 flow [2024-06-28 04:32:14,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:32:14,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:32:14,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:32:14,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 04:32:14,968 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:32:14,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:32:14,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1014707835, now seen corresponding path program 19 times [2024-06-28 04:32:14,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:32:14,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902466762] [2024-06-28 04:32:14,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:32:14,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:32:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:32:15,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:32:15,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:32:15,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902466762] [2024-06-28 04:32:15,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902466762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:32:15,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:32:15,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:32:15,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073252863] [2024-06-28 04:32:15,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:32:15,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:32:15,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:32:15,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:32:15,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:32:15,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:32:15,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 713 transitions, 11099 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:32:15,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:32:15,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:32:15,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:32:18,024 INFO L124 PetriNetUnfolderBase]: 4729/7536 cut-off events. [2024-06-28 04:32:18,024 INFO L125 PetriNetUnfolderBase]: For 1175630/1175630 co-relation queries the response was YES. [2024-06-28 04:32:18,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70586 conditions, 7536 events. 4729/7536 cut-off events. For 1175630/1175630 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 49274 event pairs, 980 based on Foata normal form. 4/7537 useless extension candidates. Maximal degree in co-relation 70370. Up to 7057 conditions per place. [2024-06-28 04:32:18,158 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 703 selfloop transitions, 46 changer transitions 0/754 dead transitions. [2024-06-28 04:32:18,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 754 transitions, 13534 flow [2024-06-28 04:32:18,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:32:18,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:32:18,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-28 04:32:18,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44146341463414634 [2024-06-28 04:32:18,159 INFO L175 Difference]: Start difference. First operand has 490 places, 713 transitions, 11099 flow. Second operand 10 states and 181 transitions. [2024-06-28 04:32:18,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 754 transitions, 13534 flow [2024-06-28 04:32:25,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 754 transitions, 13440 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 04:32:25,966 INFO L231 Difference]: Finished difference. Result has 492 places, 728 transitions, 11426 flow [2024-06-28 04:32:25,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11005, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=676, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11426, PETRI_PLACES=492, PETRI_TRANSITIONS=728} [2024-06-28 04:32:25,966 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 450 predicate places. [2024-06-28 04:32:25,967 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 728 transitions, 11426 flow [2024-06-28 04:32:25,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:32:25,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:32:25,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:32:25,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 04:32:25,967 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:32:25,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:32:25,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1103039212, now seen corresponding path program 2 times [2024-06-28 04:32:25,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:32:25,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607499614] [2024-06-28 04:32:25,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:32:25,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:32:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:32:26,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:32:26,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:32:26,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607499614] [2024-06-28 04:32:26,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607499614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:32:26,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:32:26,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:32:26,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556014522] [2024-06-28 04:32:26,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:32:26,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:32:26,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:32:26,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:32:26,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:32:26,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:32:26,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 728 transitions, 11426 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:32:26,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:32:26,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:32:26,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:32:29,074 INFO L124 PetriNetUnfolderBase]: 4744/7539 cut-off events. [2024-06-28 04:32:29,074 INFO L125 PetriNetUnfolderBase]: For 1188232/1188232 co-relation queries the response was YES. [2024-06-28 04:32:29,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71135 conditions, 7539 events. 4744/7539 cut-off events. For 1188232/1188232 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 49102 event pairs, 893 based on Foata normal form. 3/7539 useless extension candidates. Maximal degree in co-relation 70917. Up to 7000 conditions per place. [2024-06-28 04:32:29,214 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 665 selfloop transitions, 81 changer transitions 0/751 dead transitions. [2024-06-28 04:32:29,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 751 transitions, 13142 flow [2024-06-28 04:32:29,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:32:29,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:32:29,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-28 04:32:29,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47038327526132406 [2024-06-28 04:32:29,215 INFO L175 Difference]: Start difference. First operand has 492 places, 728 transitions, 11426 flow. Second operand 7 states and 135 transitions. [2024-06-28 04:32:29,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 751 transitions, 13142 flow [2024-06-28 04:32:37,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 751 transitions, 13019 flow, removed 56 selfloop flow, removed 2 redundant places. [2024-06-28 04:32:37,017 INFO L231 Difference]: Finished difference. Result has 497 places, 731 transitions, 11593 flow [2024-06-28 04:32:37,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11303, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=728, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11593, PETRI_PLACES=497, PETRI_TRANSITIONS=731} [2024-06-28 04:32:37,018 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 455 predicate places. [2024-06-28 04:32:37,018 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 731 transitions, 11593 flow [2024-06-28 04:32:37,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:32:37,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:32:37,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:32:37,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 04:32:37,018 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:32:37,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:32:37,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1103306339, now seen corresponding path program 20 times [2024-06-28 04:32:37,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:32:37,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985368851] [2024-06-28 04:32:37,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:32:37,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:32:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:32:37,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:32:37,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:32:37,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985368851] [2024-06-28 04:32:37,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985368851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:32:37,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:32:37,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:32:37,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293722461] [2024-06-28 04:32:37,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:32:37,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:32:37,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:32:37,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:32:37,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:32:37,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:32:37,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 731 transitions, 11593 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:32:37,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:32:37,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:32:37,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:32:39,922 INFO L124 PetriNetUnfolderBase]: 4764/7582 cut-off events. [2024-06-28 04:32:39,922 INFO L125 PetriNetUnfolderBase]: For 1214665/1214665 co-relation queries the response was YES. [2024-06-28 04:32:40,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71922 conditions, 7582 events. 4764/7582 cut-off events. For 1214665/1214665 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 49491 event pairs, 960 based on Foata normal form. 4/7583 useless extension candidates. Maximal degree in co-relation 71702. Up to 7133 conditions per place. [2024-06-28 04:32:40,067 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 698 selfloop transitions, 50 changer transitions 0/753 dead transitions. [2024-06-28 04:32:40,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 753 transitions, 13267 flow [2024-06-28 04:32:40,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:32:40,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:32:40,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 04:32:40,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451219512195122 [2024-06-28 04:32:40,069 INFO L175 Difference]: Start difference. First operand has 497 places, 731 transitions, 11593 flow. Second operand 8 states and 146 transitions. [2024-06-28 04:32:40,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 753 transitions, 13267 flow [2024-06-28 04:32:49,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 753 transitions, 13037 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-28 04:32:49,414 INFO L231 Difference]: Finished difference. Result has 499 places, 734 transitions, 11559 flow [2024-06-28 04:32:49,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11363, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=731, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=681, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11559, PETRI_PLACES=499, PETRI_TRANSITIONS=734} [2024-06-28 04:32:49,414 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 457 predicate places. [2024-06-28 04:32:49,414 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 734 transitions, 11559 flow [2024-06-28 04:32:49,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:32:49,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:32:49,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:32:49,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 04:32:49,415 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:32:49,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:32:49,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1230682629, now seen corresponding path program 21 times [2024-06-28 04:32:49,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:32:49,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995073112] [2024-06-28 04:32:49,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:32:49,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:32:49,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:32:50,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:32:50,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:32:50,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995073112] [2024-06-28 04:32:50,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995073112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:32:50,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:32:50,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:32:50,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905744507] [2024-06-28 04:32:50,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:32:50,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:32:50,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:32:50,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:32:50,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:32:50,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:32:50,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 734 transitions, 11559 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:32:50,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:32:50,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:32:50,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:32:52,420 INFO L124 PetriNetUnfolderBase]: 4752/7567 cut-off events. [2024-06-28 04:32:52,420 INFO L125 PetriNetUnfolderBase]: For 1182926/1182926 co-relation queries the response was YES. [2024-06-28 04:32:52,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71069 conditions, 7567 events. 4752/7567 cut-off events. For 1182926/1182926 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 49462 event pairs, 992 based on Foata normal form. 4/7568 useless extension candidates. Maximal degree in co-relation 70849. Up to 7098 conditions per place. [2024-06-28 04:32:52,563 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 704 selfloop transitions, 45 changer transitions 0/754 dead transitions. [2024-06-28 04:32:52,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 754 transitions, 13411 flow [2024-06-28 04:32:52,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:32:52,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:32:52,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 04:32:52,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45426829268292684 [2024-06-28 04:32:52,564 INFO L175 Difference]: Start difference. First operand has 499 places, 734 transitions, 11559 flow. Second operand 8 states and 149 transitions. [2024-06-28 04:32:52,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 754 transitions, 13411 flow [2024-06-28 04:33:02,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 754 transitions, 13221 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-28 04:33:02,358 INFO L231 Difference]: Finished difference. Result has 500 places, 734 transitions, 11467 flow [2024-06-28 04:33:02,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11371, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=689, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11467, PETRI_PLACES=500, PETRI_TRANSITIONS=734} [2024-06-28 04:33:02,358 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 458 predicate places. [2024-06-28 04:33:02,358 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 734 transitions, 11467 flow [2024-06-28 04:33:02,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:02,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:33:02,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:33:02,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 04:33:02,359 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:33:02,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:33:02,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1000625620, now seen corresponding path program 15 times [2024-06-28 04:33:02,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:33:02,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597121564] [2024-06-28 04:33:02,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:33:02,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:33:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:33:03,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:33:03,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:33:03,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597121564] [2024-06-28 04:33:03,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597121564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:33:03,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:33:03,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:33:03,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746436188] [2024-06-28 04:33:03,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:33:03,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:33:03,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:33:03,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:33:03,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:33:03,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:33:03,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 734 transitions, 11467 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:03,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:33:03,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:33:03,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:33:05,515 INFO L124 PetriNetUnfolderBase]: 4754/7578 cut-off events. [2024-06-28 04:33:05,515 INFO L125 PetriNetUnfolderBase]: For 1159635/1159635 co-relation queries the response was YES. [2024-06-28 04:33:05,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70821 conditions, 7578 events. 4754/7578 cut-off events. For 1159635/1159635 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 49594 event pairs, 978 based on Foata normal form. 2/7572 useless extension candidates. Maximal degree in co-relation 70601. Up to 6983 conditions per place. [2024-06-28 04:33:05,655 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 653 selfloop transitions, 106 changer transitions 0/764 dead transitions. [2024-06-28 04:33:05,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 764 transitions, 13251 flow [2024-06-28 04:33:05,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:33:05,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:33:05,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-28 04:33:05,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47865853658536583 [2024-06-28 04:33:05,656 INFO L175 Difference]: Start difference. First operand has 500 places, 734 transitions, 11467 flow. Second operand 8 states and 157 transitions. [2024-06-28 04:33:05,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 764 transitions, 13251 flow [2024-06-28 04:33:14,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 764 transitions, 13115 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 04:33:14,160 INFO L231 Difference]: Finished difference. Result has 501 places, 737 transitions, 11694 flow [2024-06-28 04:33:14,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11331, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=628, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11694, PETRI_PLACES=501, PETRI_TRANSITIONS=737} [2024-06-28 04:33:14,161 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 459 predicate places. [2024-06-28 04:33:14,161 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 737 transitions, 11694 flow [2024-06-28 04:33:14,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:14,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:33:14,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:33:14,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 04:33:14,161 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:33:14,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:33:14,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1216867479, now seen corresponding path program 22 times [2024-06-28 04:33:14,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:33:14,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203791152] [2024-06-28 04:33:14,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:33:14,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:33:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:33:15,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:33:15,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:33:15,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203791152] [2024-06-28 04:33:15,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203791152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:33:15,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:33:15,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:33:15,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845345977] [2024-06-28 04:33:15,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:33:15,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:33:15,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:33:15,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:33:15,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:33:15,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:33:15,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 737 transitions, 11694 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:15,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:33:15,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:33:15,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:33:17,826 INFO L124 PetriNetUnfolderBase]: 4774/7596 cut-off events. [2024-06-28 04:33:17,826 INFO L125 PetriNetUnfolderBase]: For 1193365/1193365 co-relation queries the response was YES. [2024-06-28 04:33:17,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71355 conditions, 7596 events. 4774/7596 cut-off events. For 1193365/1193365 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 49564 event pairs, 940 based on Foata normal form. 4/7592 useless extension candidates. Maximal degree in co-relation 71134. Up to 6612 conditions per place. [2024-06-28 04:33:17,956 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 619 selfloop transitions, 151 changer transitions 0/775 dead transitions. [2024-06-28 04:33:17,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 775 transitions, 14291 flow [2024-06-28 04:33:17,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:33:17,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:33:17,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-28 04:33:17,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 04:33:17,957 INFO L175 Difference]: Start difference. First operand has 501 places, 737 transitions, 11694 flow. Second operand 8 states and 164 transitions. [2024-06-28 04:33:17,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 775 transitions, 14291 flow [2024-06-28 04:33:25,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 775 transitions, 13967 flow, removed 60 selfloop flow, removed 7 redundant places. [2024-06-28 04:33:25,530 INFO L231 Difference]: Finished difference. Result has 502 places, 740 transitions, 11764 flow [2024-06-28 04:33:25,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11376, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11764, PETRI_PLACES=502, PETRI_TRANSITIONS=740} [2024-06-28 04:33:25,531 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 460 predicate places. [2024-06-28 04:33:25,531 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 740 transitions, 11764 flow [2024-06-28 04:33:25,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:25,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:33:25,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:33:25,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 04:33:25,532 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:33:25,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:33:25,532 INFO L85 PathProgramCache]: Analyzing trace with hash -717211457, now seen corresponding path program 23 times [2024-06-28 04:33:25,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:33:25,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314260173] [2024-06-28 04:33:25,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:33:25,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:33:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:33:26,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:33:26,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:33:26,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314260173] [2024-06-28 04:33:26,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314260173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:33:26,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:33:26,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:33:26,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566949860] [2024-06-28 04:33:26,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:33:26,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:33:26,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:33:26,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:33:26,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:33:26,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:33:26,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 740 transitions, 11764 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:26,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:33:26,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:33:26,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:33:29,048 INFO L124 PetriNetUnfolderBase]: 4794/7635 cut-off events. [2024-06-28 04:33:29,048 INFO L125 PetriNetUnfolderBase]: For 1195127/1195127 co-relation queries the response was YES. [2024-06-28 04:33:29,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71879 conditions, 7635 events. 4794/7635 cut-off events. For 1195127/1195127 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 49963 event pairs, 974 based on Foata normal form. 4/7636 useless extension candidates. Maximal degree in co-relation 71658. Up to 7162 conditions per place. [2024-06-28 04:33:29,176 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 710 selfloop transitions, 54 changer transitions 0/769 dead transitions. [2024-06-28 04:33:29,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 769 transitions, 13536 flow [2024-06-28 04:33:29,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:33:29,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:33:29,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-28 04:33:29,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49477351916376305 [2024-06-28 04:33:29,178 INFO L175 Difference]: Start difference. First operand has 502 places, 740 transitions, 11764 flow. Second operand 7 states and 142 transitions. [2024-06-28 04:33:29,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 769 transitions, 13536 flow [2024-06-28 04:33:38,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 769 transitions, 13119 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-28 04:33:38,019 INFO L231 Difference]: Finished difference. Result has 503 places, 743 transitions, 11576 flow [2024-06-28 04:33:38,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11350, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=686, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11576, PETRI_PLACES=503, PETRI_TRANSITIONS=743} [2024-06-28 04:33:38,020 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 461 predicate places. [2024-06-28 04:33:38,020 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 743 transitions, 11576 flow [2024-06-28 04:33:38,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:38,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:33:38,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:33:38,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 04:33:38,021 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:33:38,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:33:38,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1216873059, now seen corresponding path program 24 times [2024-06-28 04:33:38,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:33:38,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882107022] [2024-06-28 04:33:38,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:33:38,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:33:38,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:33:38,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:33:38,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:33:38,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882107022] [2024-06-28 04:33:38,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882107022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:33:38,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:33:38,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:33:38,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13692504] [2024-06-28 04:33:38,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:33:38,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:33:38,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:33:38,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:33:38,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:33:38,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:33:38,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 743 transitions, 11576 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:38,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:33:38,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:33:38,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:33:41,518 INFO L124 PetriNetUnfolderBase]: 4846/7704 cut-off events. [2024-06-28 04:33:41,518 INFO L125 PetriNetUnfolderBase]: For 1245530/1245530 co-relation queries the response was YES. [2024-06-28 04:33:41,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72151 conditions, 7704 events. 4846/7704 cut-off events. For 1245530/1245530 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 50441 event pairs, 960 based on Foata normal form. 4/7700 useless extension candidates. Maximal degree in co-relation 71931. Up to 6668 conditions per place. [2024-06-28 04:33:41,643 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 618 selfloop transitions, 158 changer transitions 0/781 dead transitions. [2024-06-28 04:33:41,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 781 transitions, 14253 flow [2024-06-28 04:33:41,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:33:41,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:33:41,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-28 04:33:41,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2024-06-28 04:33:41,645 INFO L175 Difference]: Start difference. First operand has 503 places, 743 transitions, 11576 flow. Second operand 8 states and 160 transitions. [2024-06-28 04:33:41,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 781 transitions, 14253 flow [2024-06-28 04:33:50,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 781 transitions, 14071 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-28 04:33:50,643 INFO L231 Difference]: Finished difference. Result has 504 places, 749 transitions, 11871 flow [2024-06-28 04:33:50,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11394, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=743, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11871, PETRI_PLACES=504, PETRI_TRANSITIONS=749} [2024-06-28 04:33:50,643 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 462 predicate places. [2024-06-28 04:33:50,643 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 749 transitions, 11871 flow [2024-06-28 04:33:50,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:50,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:33:50,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:33:50,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 04:33:50,644 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:33:50,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:33:50,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1225141689, now seen corresponding path program 25 times [2024-06-28 04:33:50,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:33:50,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054413271] [2024-06-28 04:33:50,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:33:50,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:33:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:33:51,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:33:51,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:33:51,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054413271] [2024-06-28 04:33:51,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054413271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:33:51,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:33:51,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:33:51,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133449952] [2024-06-28 04:33:51,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:33:51,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:33:51,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:33:51,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:33:51,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:33:51,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:33:51,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 749 transitions, 11871 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:51,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:33:51,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:33:51,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:33:54,052 INFO L124 PetriNetUnfolderBase]: 4834/7684 cut-off events. [2024-06-28 04:33:54,052 INFO L125 PetriNetUnfolderBase]: For 1232370/1232370 co-relation queries the response was YES. [2024-06-28 04:33:54,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71955 conditions, 7684 events. 4834/7684 cut-off events. For 1232370/1232370 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 50288 event pairs, 914 based on Foata normal form. 4/7680 useless extension candidates. Maximal degree in co-relation 71736. Up to 6660 conditions per place. [2024-06-28 04:33:54,176 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 607 selfloop transitions, 171 changer transitions 0/783 dead transitions. [2024-06-28 04:33:54,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 783 transitions, 14161 flow [2024-06-28 04:33:54,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:33:54,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:33:54,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-28 04:33:54,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49390243902439024 [2024-06-28 04:33:54,178 INFO L175 Difference]: Start difference. First operand has 504 places, 749 transitions, 11871 flow. Second operand 8 states and 162 transitions. [2024-06-28 04:33:54,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 783 transitions, 14161 flow [2024-06-28 04:34:01,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 783 transitions, 13884 flow, removed 59 selfloop flow, removed 3 redundant places. [2024-06-28 04:34:02,002 INFO L231 Difference]: Finished difference. Result has 509 places, 749 transitions, 11943 flow [2024-06-28 04:34:02,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11594, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=578, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11943, PETRI_PLACES=509, PETRI_TRANSITIONS=749} [2024-06-28 04:34:02,002 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 467 predicate places. [2024-06-28 04:34:02,002 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 749 transitions, 11943 flow [2024-06-28 04:34:02,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:02,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:02,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:34:02,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 04:34:02,003 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:34:02,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:02,004 INFO L85 PathProgramCache]: Analyzing trace with hash -716944330, now seen corresponding path program 3 times [2024-06-28 04:34:02,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:02,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920911944] [2024-06-28 04:34:02,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:02,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:02,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:02,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:02,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920911944] [2024-06-28 04:34:02,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920911944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:02,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:02,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:34:02,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241791456] [2024-06-28 04:34:02,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:02,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:34:02,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:02,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:34:02,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:34:02,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:34:02,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 749 transitions, 11943 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:02,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:02,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:34:02,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:05,545 INFO L124 PetriNetUnfolderBase]: 4849/7709 cut-off events. [2024-06-28 04:34:05,545 INFO L125 PetriNetUnfolderBase]: For 1243444/1243444 co-relation queries the response was YES. [2024-06-28 04:34:05,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72279 conditions, 7709 events. 4849/7709 cut-off events. For 1243444/1243444 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 50384 event pairs, 941 based on Foata normal form. 3/7709 useless extension candidates. Maximal degree in co-relation 72059. Up to 7120 conditions per place. [2024-06-28 04:34:05,685 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 675 selfloop transitions, 92 changer transitions 0/772 dead transitions. [2024-06-28 04:34:05,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 772 transitions, 13695 flow [2024-06-28 04:34:05,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:34:05,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:34:05,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-06-28 04:34:05,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5040650406504065 [2024-06-28 04:34:05,686 INFO L175 Difference]: Start difference. First operand has 509 places, 749 transitions, 11943 flow. Second operand 6 states and 124 transitions. [2024-06-28 04:34:05,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 772 transitions, 13695 flow [2024-06-28 04:34:15,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 772 transitions, 13196 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 04:34:15,860 INFO L231 Difference]: Finished difference. Result has 508 places, 752 transitions, 11799 flow [2024-06-28 04:34:15,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11444, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=657, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=11799, PETRI_PLACES=508, PETRI_TRANSITIONS=752} [2024-06-28 04:34:15,861 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 466 predicate places. [2024-06-28 04:34:15,861 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 752 transitions, 11799 flow [2024-06-28 04:34:15,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:15,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:15,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:34:15,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 04:34:15,861 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:34:15,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:15,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1225587159, now seen corresponding path program 26 times [2024-06-28 04:34:15,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:15,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586018087] [2024-06-28 04:34:15,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:15,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:16,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:16,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:16,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586018087] [2024-06-28 04:34:16,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586018087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:16,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:16,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:34:16,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274037314] [2024-06-28 04:34:16,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:16,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:34:16,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:16,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:34:16,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:34:16,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:34:16,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 752 transitions, 11799 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:16,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:16,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:34:16,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:19,344 INFO L124 PetriNetUnfolderBase]: 4837/7679 cut-off events. [2024-06-28 04:34:19,344 INFO L125 PetriNetUnfolderBase]: For 1237995/1237995 co-relation queries the response was YES. [2024-06-28 04:34:19,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71512 conditions, 7679 events. 4837/7679 cut-off events. For 1237995/1237995 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 50207 event pairs, 1012 based on Foata normal form. 4/7680 useless extension candidates. Maximal degree in co-relation 71292. Up to 7278 conditions per place. [2024-06-28 04:34:19,479 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 729 selfloop transitions, 39 changer transitions 0/773 dead transitions. [2024-06-28 04:34:19,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 773 transitions, 13435 flow [2024-06-28 04:34:19,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:34:19,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:34:19,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 04:34:19,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45426829268292684 [2024-06-28 04:34:19,480 INFO L175 Difference]: Start difference. First operand has 508 places, 752 transitions, 11799 flow. Second operand 8 states and 149 transitions. [2024-06-28 04:34:19,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 773 transitions, 13435 flow [2024-06-28 04:34:27,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 773 transitions, 13163 flow, removed 56 selfloop flow, removed 5 redundant places. [2024-06-28 04:34:27,727 INFO L231 Difference]: Finished difference. Result has 511 places, 752 transitions, 11611 flow [2024-06-28 04:34:27,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11527, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=752, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=713, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11611, PETRI_PLACES=511, PETRI_TRANSITIONS=752} [2024-06-28 04:34:27,727 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 469 predicate places. [2024-06-28 04:34:27,727 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 752 transitions, 11611 flow [2024-06-28 04:34:27,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:27,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:27,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:34:27,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 04:34:27,728 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:34:27,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:27,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1225438204, now seen corresponding path program 16 times [2024-06-28 04:34:27,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:27,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796661111] [2024-06-28 04:34:27,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:27,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:28,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:28,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:28,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796661111] [2024-06-28 04:34:28,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796661111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:28,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:28,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:34:28,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796192014] [2024-06-28 04:34:28,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:28,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:34:28,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:28,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:34:28,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:34:28,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:34:28,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 752 transitions, 11611 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:28,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:28,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:34:28,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:31,323 INFO L124 PetriNetUnfolderBase]: 4828/7687 cut-off events. [2024-06-28 04:34:31,323 INFO L125 PetriNetUnfolderBase]: For 1201087/1201087 co-relation queries the response was YES. [2024-06-28 04:34:31,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70597 conditions, 7687 events. 4828/7687 cut-off events. For 1201087/1201087 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 50358 event pairs, 998 based on Foata normal form. 3/7682 useless extension candidates. Maximal degree in co-relation 70377. Up to 7004 conditions per place. [2024-06-28 04:34:31,459 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 631 selfloop transitions, 148 changer transitions 0/784 dead transitions. [2024-06-28 04:34:31,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 784 transitions, 13585 flow [2024-06-28 04:34:31,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:34:31,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:34:31,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-28 04:34:31,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2024-06-28 04:34:31,460 INFO L175 Difference]: Start difference. First operand has 511 places, 752 transitions, 11611 flow. Second operand 9 states and 177 transitions. [2024-06-28 04:34:31,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 784 transitions, 13585 flow [2024-06-28 04:34:40,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 784 transitions, 13405 flow, removed 63 selfloop flow, removed 4 redundant places. [2024-06-28 04:34:40,870 INFO L231 Difference]: Finished difference. Result has 516 places, 752 transitions, 11751 flow [2024-06-28 04:34:40,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11431, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=752, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11751, PETRI_PLACES=516, PETRI_TRANSITIONS=752} [2024-06-28 04:34:40,871 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 474 predicate places. [2024-06-28 04:34:40,871 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 752 transitions, 11751 flow [2024-06-28 04:34:40,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:40,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:40,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:34:40,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 04:34:40,871 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:34:40,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:40,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1110657989, now seen corresponding path program 27 times [2024-06-28 04:34:40,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:40,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177434132] [2024-06-28 04:34:40,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:40,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:41,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:41,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:41,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177434132] [2024-06-28 04:34:41,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177434132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:41,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:41,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:34:41,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774999628] [2024-06-28 04:34:41,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:41,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:34:41,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:41,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:34:41,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:34:41,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:34:41,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 752 transitions, 11751 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:41,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:41,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:34:41,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:44,300 INFO L124 PetriNetUnfolderBase]: 4848/7710 cut-off events. [2024-06-28 04:34:44,300 INFO L125 PetriNetUnfolderBase]: For 1227086/1227086 co-relation queries the response was YES. [2024-06-28 04:34:44,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71248 conditions, 7710 events. 4848/7710 cut-off events. For 1227086/1227086 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 50447 event pairs, 980 based on Foata normal form. 4/7711 useless extension candidates. Maximal degree in co-relation 71027. Up to 7022 conditions per place. [2024-06-28 04:34:44,428 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 683 selfloop transitions, 94 changer transitions 0/782 dead transitions. [2024-06-28 04:34:44,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 782 transitions, 13823 flow [2024-06-28 04:34:44,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:34:44,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:34:44,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-28 04:34:44,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2024-06-28 04:34:44,429 INFO L175 Difference]: Start difference. First operand has 516 places, 752 transitions, 11751 flow. Second operand 8 states and 156 transitions. [2024-06-28 04:34:44,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 782 transitions, 13823 flow [2024-06-28 04:34:55,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 782 transitions, 13400 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 04:34:55,027 INFO L231 Difference]: Finished difference. Result has 515 places, 755 transitions, 11618 flow [2024-06-28 04:34:55,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11328, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=752, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11618, PETRI_PLACES=515, PETRI_TRANSITIONS=755} [2024-06-28 04:34:55,028 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 473 predicate places. [2024-06-28 04:34:55,029 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 755 transitions, 11618 flow [2024-06-28 04:34:55,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:55,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:55,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:34:55,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 04:34:55,029 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:34:55,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:55,030 INFO L85 PathProgramCache]: Analyzing trace with hash 988966329, now seen corresponding path program 28 times [2024-06-28 04:34:55,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:55,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177121311] [2024-06-28 04:34:55,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:55,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:55,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:55,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:55,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177121311] [2024-06-28 04:34:55,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177121311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:55,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:55,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:34:55,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531598881] [2024-06-28 04:34:55,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:55,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:34:55,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:55,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:34:55,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:34:56,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:34:56,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 755 transitions, 11618 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:56,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:56,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:34:56,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:58,704 INFO L124 PetriNetUnfolderBase]: 4836/7694 cut-off events. [2024-06-28 04:34:58,704 INFO L125 PetriNetUnfolderBase]: For 1209174/1209174 co-relation queries the response was YES. [2024-06-28 04:34:58,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70493 conditions, 7694 events. 4836/7694 cut-off events. For 1209174/1209174 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 50363 event pairs, 952 based on Foata normal form. 4/7695 useless extension candidates. Maximal degree in co-relation 70272. Up to 7014 conditions per place. [2024-06-28 04:34:58,826 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 680 selfloop transitions, 99 changer transitions 0/784 dead transitions. [2024-06-28 04:34:58,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 784 transitions, 13354 flow [2024-06-28 04:34:58,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:34:58,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:34:58,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-28 04:34:58,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817073170731707 [2024-06-28 04:34:58,827 INFO L175 Difference]: Start difference. First operand has 515 places, 755 transitions, 11618 flow. Second operand 8 states and 158 transitions. [2024-06-28 04:34:58,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 784 transitions, 13354 flow [2024-06-28 04:35:07,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 784 transitions, 12898 flow, removed 62 selfloop flow, removed 8 redundant places. [2024-06-28 04:35:07,829 INFO L231 Difference]: Finished difference. Result has 515 places, 755 transitions, 11372 flow [2024-06-28 04:35:07,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11162, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=755, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=656, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11372, PETRI_PLACES=515, PETRI_TRANSITIONS=755} [2024-06-28 04:35:07,829 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 473 predicate places. [2024-06-28 04:35:07,829 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 755 transitions, 11372 flow [2024-06-28 04:35:07,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:07,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:07,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:35:07,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 04:35:07,830 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:35:07,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:07,830 INFO L85 PathProgramCache]: Analyzing trace with hash 988966174, now seen corresponding path program 17 times [2024-06-28 04:35:07,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:07,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526752944] [2024-06-28 04:35:07,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:07,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:08,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:08,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:08,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526752944] [2024-06-28 04:35:08,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526752944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:08,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:08,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:35:08,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041286047] [2024-06-28 04:35:08,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:08,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:35:08,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:08,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:35:08,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:35:08,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:35:08,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 755 transitions, 11372 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:08,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:08,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:35:08,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:11,434 INFO L124 PetriNetUnfolderBase]: 4833/7706 cut-off events. [2024-06-28 04:35:11,434 INFO L125 PetriNetUnfolderBase]: For 1153703/1153703 co-relation queries the response was YES. [2024-06-28 04:35:11,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69887 conditions, 7706 events. 4833/7706 cut-off events. For 1153703/1153703 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 50607 event pairs, 991 based on Foata normal form. 1/7704 useless extension candidates. Maximal degree in co-relation 69666. Up to 7260 conditions per place. [2024-06-28 04:35:11,791 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 722 selfloop transitions, 54 changer transitions 0/781 dead transitions. [2024-06-28 04:35:11,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 781 transitions, 13044 flow [2024-06-28 04:35:11,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:35:11,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:35:11,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 04:35:11,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-28 04:35:11,792 INFO L175 Difference]: Start difference. First operand has 515 places, 755 transitions, 11372 flow. Second operand 8 states and 152 transitions. [2024-06-28 04:35:11,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 781 transitions, 13044 flow [2024-06-28 04:35:21,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 781 transitions, 12661 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 04:35:21,847 INFO L231 Difference]: Finished difference. Result has 516 places, 757 transitions, 11171 flow [2024-06-28 04:35:21,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10989, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=755, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=701, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11171, PETRI_PLACES=516, PETRI_TRANSITIONS=757} [2024-06-28 04:35:21,848 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 474 predicate places. [2024-06-28 04:35:21,848 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 757 transitions, 11171 flow [2024-06-28 04:35:21,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:21,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:21,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:35:21,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 04:35:21,849 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:35:21,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:21,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1424888949, now seen corresponding path program 29 times [2024-06-28 04:35:21,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:21,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65325521] [2024-06-28 04:35:21,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:21,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:22,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:22,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:22,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65325521] [2024-06-28 04:35:22,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65325521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:22,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:22,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:35:22,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578147207] [2024-06-28 04:35:22,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:22,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:35:22,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:22,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:35:22,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:35:22,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:35:22,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 757 transitions, 11171 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:22,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:22,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:35:22,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:25,256 INFO L124 PetriNetUnfolderBase]: 4821/7692 cut-off events. [2024-06-28 04:35:25,256 INFO L125 PetriNetUnfolderBase]: For 1143962/1143962 co-relation queries the response was YES. [2024-06-28 04:35:25,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68866 conditions, 7692 events. 4821/7692 cut-off events. For 1143962/1143962 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 50557 event pairs, 966 based on Foata normal form. 4/7693 useless extension candidates. Maximal degree in co-relation 68643. Up to 7022 conditions per place. [2024-06-28 04:35:25,382 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 675 selfloop transitions, 111 changer transitions 0/791 dead transitions. [2024-06-28 04:35:25,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 791 transitions, 13195 flow [2024-06-28 04:35:25,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:35:25,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:35:25,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-28 04:35:25,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5060975609756098 [2024-06-28 04:35:25,383 INFO L175 Difference]: Start difference. First operand has 516 places, 757 transitions, 11171 flow. Second operand 8 states and 166 transitions. [2024-06-28 04:35:25,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 791 transitions, 13195 flow [2024-06-28 04:35:34,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 791 transitions, 13065 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-28 04:35:34,491 INFO L231 Difference]: Finished difference. Result has 520 places, 757 transitions, 11283 flow [2024-06-28 04:35:34,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11043, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=646, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11283, PETRI_PLACES=520, PETRI_TRANSITIONS=757} [2024-06-28 04:35:34,492 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 478 predicate places. [2024-06-28 04:35:34,492 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 757 transitions, 11283 flow [2024-06-28 04:35:34,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:34,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:34,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:35:34,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 04:35:34,493 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:35:34,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:34,493 INFO L85 PathProgramCache]: Analyzing trace with hash -253582060, now seen corresponding path program 4 times [2024-06-28 04:35:34,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:34,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924762791] [2024-06-28 04:35:34,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:34,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:35,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:35,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:35,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924762791] [2024-06-28 04:35:35,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924762791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:35,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:35,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:35:35,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760336731] [2024-06-28 04:35:35,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:35,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:35:35,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:35,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:35:35,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:35:35,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:35:35,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 757 transitions, 11283 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:35,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:35,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:35:35,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:37,940 INFO L124 PetriNetUnfolderBase]: 4823/7704 cut-off events. [2024-06-28 04:35:37,940 INFO L125 PetriNetUnfolderBase]: For 1120855/1120855 co-relation queries the response was YES. [2024-06-28 04:35:38,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69015 conditions, 7704 events. 4823/7704 cut-off events. For 1120855/1120855 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 50692 event pairs, 937 based on Foata normal form. 2/7703 useless extension candidates. Maximal degree in co-relation 68791. Up to 7003 conditions per place. [2024-06-28 04:35:38,085 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 651 selfloop transitions, 130 changer transitions 0/786 dead transitions. [2024-06-28 04:35:38,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 786 transitions, 13109 flow [2024-06-28 04:35:38,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:35:38,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:35:38,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 146 transitions. [2024-06-28 04:35:38,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087108013937283 [2024-06-28 04:35:38,086 INFO L175 Difference]: Start difference. First operand has 520 places, 757 transitions, 11283 flow. Second operand 7 states and 146 transitions. [2024-06-28 04:35:38,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 786 transitions, 13109 flow [2024-06-28 04:35:47,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 786 transitions, 12908 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 04:35:47,129 INFO L231 Difference]: Finished difference. Result has 519 places, 760 transitions, 11495 flow [2024-06-28 04:35:47,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11082, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=627, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11495, PETRI_PLACES=519, PETRI_TRANSITIONS=760} [2024-06-28 04:35:47,129 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 477 predicate places. [2024-06-28 04:35:47,129 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 760 transitions, 11495 flow [2024-06-28 04:35:47,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:47,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:47,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:35:47,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 04:35:47,130 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:35:47,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:47,130 INFO L85 PathProgramCache]: Analyzing trace with hash -612837129, now seen corresponding path program 30 times [2024-06-28 04:35:47,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:47,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781782985] [2024-06-28 04:35:47,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:47,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:47,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:47,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:47,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781782985] [2024-06-28 04:35:47,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781782985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:47,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:47,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:35:47,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696413272] [2024-06-28 04:35:47,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:47,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:35:47,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:47,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:35:47,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:35:48,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:35:48,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 760 transitions, 11495 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:48,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:48,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:35:48,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:50,750 INFO L124 PetriNetUnfolderBase]: 4811/7683 cut-off events. [2024-06-28 04:35:50,750 INFO L125 PetriNetUnfolderBase]: For 1108494/1108494 co-relation queries the response was YES. [2024-06-28 04:35:50,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68657 conditions, 7683 events. 4811/7683 cut-off events. For 1108494/1108494 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 50556 event pairs, 972 based on Foata normal form. 4/7684 useless extension candidates. Maximal degree in co-relation 68435. Up to 7017 conditions per place. [2024-06-28 04:35:50,885 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 682 selfloop transitions, 106 changer transitions 0/793 dead transitions. [2024-06-28 04:35:50,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 793 transitions, 13261 flow [2024-06-28 04:35:50,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:35:50,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:35:50,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-28 04:35:50,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5060975609756098 [2024-06-28 04:35:50,886 INFO L175 Difference]: Start difference. First operand has 519 places, 760 transitions, 11495 flow. Second operand 8 states and 166 transitions. [2024-06-28 04:35:50,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 793 transitions, 13261 flow [2024-06-28 04:35:59,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 793 transitions, 12932 flow, removed 61 selfloop flow, removed 6 redundant places. [2024-06-28 04:35:59,963 INFO L231 Difference]: Finished difference. Result has 521 places, 760 transitions, 11401 flow [2024-06-28 04:35:59,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11166, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11401, PETRI_PLACES=521, PETRI_TRANSITIONS=760} [2024-06-28 04:35:59,963 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 479 predicate places. [2024-06-28 04:35:59,963 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 760 transitions, 11401 flow [2024-06-28 04:35:59,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:59,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:59,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:35:59,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 04:35:59,964 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:35:59,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:59,965 INFO L85 PathProgramCache]: Analyzing trace with hash 970285829, now seen corresponding path program 1 times [2024-06-28 04:35:59,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:59,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876484020] [2024-06-28 04:35:59,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:59,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:36:01,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:36:01,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:36:01,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876484020] [2024-06-28 04:36:01,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876484020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:36:01,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:36:01,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:36:01,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137362157] [2024-06-28 04:36:01,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:36:01,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:36:01,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:36:01,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:36:01,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:36:01,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:36:01,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 760 transitions, 11401 flow. Second operand has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:01,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:36:01,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:36:01,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:36:03,865 INFO L124 PetriNetUnfolderBase]: 4819/7664 cut-off events. [2024-06-28 04:36:03,866 INFO L125 PetriNetUnfolderBase]: For 1092651/1092651 co-relation queries the response was YES. [2024-06-28 04:36:03,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68562 conditions, 7664 events. 4819/7664 cut-off events. For 1092651/1092651 co-relation queries the response was YES. Maximal size of possible extension queue 604. Compared 50251 event pairs, 976 based on Foata normal form. 2/7663 useless extension candidates. Maximal degree in co-relation 68340. Up to 7259 conditions per place. [2024-06-28 04:36:04,233 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 738 selfloop transitions, 42 changer transitions 0/785 dead transitions. [2024-06-28 04:36:04,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 785 transitions, 13134 flow [2024-06-28 04:36:04,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:36:04,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:36:04,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-28 04:36:04,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41019955654101997 [2024-06-28 04:36:04,234 INFO L175 Difference]: Start difference. First operand has 521 places, 760 transitions, 11401 flow. Second operand 11 states and 185 transitions. [2024-06-28 04:36:04,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 785 transitions, 13134 flow Killed by 15