./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi006_pso.oepc_pso.opt_tso.oepc_tso.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/rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --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 03:41:22,444 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:41:22,507 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:41:22,509 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:41:22,510 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:41:22,521 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:41:22,521 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:41:22,522 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:41:22,522 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:41:22,522 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:41:22,522 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:41:22,523 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:41:22,523 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:41:22,523 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:41:22,523 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:41:22,524 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:41:22,524 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:41:22,524 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:41:22,524 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:41:22,525 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:41:22,525 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:41:22,525 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:41:22,525 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:41:22,526 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:41:22,526 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:41:22,526 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:41:22,526 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:41:22,526 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:41:22,527 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:41:22,527 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:41:22,527 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:41:22,527 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:41:22,527 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:41:22,528 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:41:22,528 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:41:22,528 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:41:22,528 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:41:22,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:41:22,528 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:41:22,529 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:41:22,529 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:41:22,529 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:41:22,529 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:41:22,529 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:41:22,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:41:22,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:41:22,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:41:22,688 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:41:22,688 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:41:22,689 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-28 03:41:23,752 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:41:23,982 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:41:23,985 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-28 03:41:24,007 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb39d66d8/aa5da4a4e6964adfb2885d41b29c168d/FLAGe5c3bd451 [2024-06-28 03:41:24,021 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb39d66d8/aa5da4a4e6964adfb2885d41b29c168d [2024-06-28 03:41:24,023 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:41:24,023 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:41:24,024 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-28 03:41:24,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:41:24,146 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:41:24,147 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:41:24,147 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:41:24,151 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:41:24,151 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:41:24" (1/2) ... [2024-06-28 03:41:24,152 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63782a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:41:24, skipping insertion in model container [2024-06-28 03:41:24,152 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:41:24" (1/2) ... [2024-06-28 03:41:24,153 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@617b8ed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:41:24, skipping insertion in model container [2024-06-28 03:41:24,155 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:41:24" (2/2) ... [2024-06-28 03:41:24,156 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63782a7a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:41:24, skipping insertion in model container [2024-06-28 03:41:24,156 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:41:24" (2/2) ... [2024-06-28 03:41:24,156 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:41:24,229 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:41:24,231 INFO L97 edCorrectnessWitness]: Location invariant before [L838-L838] (((((((((((((((((! multithreaded || y$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0) [2024-06-28 03:41:24,231 INFO L97 edCorrectnessWitness]: Location invariant before [L836-L836] (((((((((((((((((! multithreaded || y$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0) [2024-06-28 03:41:24,231 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] (((((((((((((((((! multithreaded || y$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0) [2024-06-28 03:41:24,231 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:41:24,231 INFO L106 edCorrectnessWitness]: ghost_update [L834-L834] multithreaded = 1; [2024-06-28 03:41:24,265 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:41:24,538 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:41:24,551 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:41:24,653 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:41:24,699 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:41:24,699 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:41:24 WrapperNode [2024-06-28 03:41:24,699 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:41:24,711 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:41:24,711 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:41:24,711 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:41:24,717 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 03:41:24" (1/1) ... [2024-06-28 03:41:24,730 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 03:41:24" (1/1) ... [2024-06-28 03:41:24,761 INFO L138 Inliner]: procedures = 175, calls = 43, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 166 [2024-06-28 03:41:24,761 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:41:24,762 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:41:24,762 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:41:24,762 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:41:24,770 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 03:41:24" (1/1) ... [2024-06-28 03:41:24,771 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 03:41:24" (1/1) ... [2024-06-28 03:41:24,774 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 03:41:24" (1/1) ... [2024-06-28 03:41:24,787 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 03:41:24,788 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 03:41:24" (1/1) ... [2024-06-28 03:41:24,788 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 03:41:24" (1/1) ... [2024-06-28 03:41:24,796 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 03:41:24" (1/1) ... [2024-06-28 03:41:24,797 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 03:41:24" (1/1) ... [2024-06-28 03:41:24,799 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 03:41:24" (1/1) ... [2024-06-28 03:41:24,801 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 03:41:24" (1/1) ... [2024-06-28 03:41:24,804 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:41:24,804 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:41:24,805 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:41:24,805 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:41:24,805 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 03:41:24" (1/1) ... [2024-06-28 03:41:24,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:41:24,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:41:24,826 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 03:41:24,831 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 03:41:24,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:41:24,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:41:24,856 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:41:24,857 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:41:24,857 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:41:24,857 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:41:24,857 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:41:24,857 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:41:24,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:41:24,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:41:24,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:41:24,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:41:24,859 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 03:41:24,997 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:41:24,998 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:41:25,268 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:41:25,269 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:41:25,447 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:41:25,448 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:41:25,448 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:41:25 BoogieIcfgContainer [2024-06-28 03:41:25,449 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:41:25,452 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:41:25,452 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:41:25,454 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:41:25,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:41:24" (1/4) ... [2024-06-28 03:41:25,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2bd721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:41:25, skipping insertion in model container [2024-06-28 03:41:25,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:41:24" (2/4) ... [2024-06-28 03:41:25,456 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2bd721 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:41:25, skipping insertion in model container [2024-06-28 03:41:25,456 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 03:41:24" (3/4) ... [2024-06-28 03:41:25,456 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2bd721 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:41:25, skipping insertion in model container [2024-06-28 03:41:25,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:41:25" (4/4) ... [2024-06-28 03:41:25,457 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-28 03:41:25,470 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:41:25,471 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 03:41:25,471 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:41:25,509 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:41:25,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 40 transitions, 92 flow [2024-06-28 03:41:25,568 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2024-06-28 03:41:25,568 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:41:25,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 37 events. 0/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:41:25,570 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 40 transitions, 92 flow [2024-06-28 03:41:25,572 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 71 flow [2024-06-28 03:41:25,578 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:41:25,583 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;@75985039, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:41:25,583 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 03:41:25,585 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:41:25,585 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:41:25,586 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:41:25,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:25,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:41:25,587 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 03:41:25,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:25,590 INFO L85 PathProgramCache]: Analyzing trace with hash 403727084, now seen corresponding path program 1 times [2024-06-28 03:41:25,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:25,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686473015] [2024-06-28 03:41:25,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:25,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:26,506 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 03:41:26,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:26,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686473015] [2024-06-28 03:41:26,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686473015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:26,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:26,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:41:26,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873972419] [2024-06-28 03:41:26,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:26,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:41:26,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:26,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:41:26,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:41:26,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-06-28 03:41:26,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:26,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:26,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-06-28 03:41:26,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:26,857 INFO L124 PetriNetUnfolderBase]: 1152/1770 cut-off events. [2024-06-28 03:41:26,857 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-28 03:41:26,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3587 conditions, 1770 events. 1152/1770 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8412 event pairs, 785 based on Foata normal form. 1/1731 useless extension candidates. Maximal degree in co-relation 3575. Up to 1732 conditions per place. [2024-06-28 03:41:26,869 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 31 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2024-06-28 03:41:26,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 167 flow [2024-06-28 03:41:26,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:41:26,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:41:26,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-06-28 03:41:26,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5916666666666667 [2024-06-28 03:41:26,880 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 3 states and 71 transitions. [2024-06-28 03:41:26,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 167 flow [2024-06-28 03:41:26,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 41 transitions, 162 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 03:41:26,884 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 98 flow [2024-06-28 03:41:26,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2024-06-28 03:41:26,890 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 0 predicate places. [2024-06-28 03:41:26,891 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 98 flow [2024-06-28 03:41:26,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:26,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:26,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:26,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:41:26,892 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 03:41:26,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:26,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1526065087, now seen corresponding path program 1 times [2024-06-28 03:41:26,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:26,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829431036] [2024-06-28 03:41:26,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:26,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:27,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:27,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:27,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829431036] [2024-06-28 03:41:27,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829431036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:27,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:27,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:41:27,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25389116] [2024-06-28 03:41:27,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:27,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:41:27,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:27,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:41:27,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:41:27,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:41:27,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:27,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:27,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:41:27,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:27,801 INFO L124 PetriNetUnfolderBase]: 1389/2124 cut-off events. [2024-06-28 03:41:27,801 INFO L125 PetriNetUnfolderBase]: For 400/405 co-relation queries the response was YES. [2024-06-28 03:41:27,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4858 conditions, 2124 events. 1389/2124 cut-off events. For 400/405 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9968 event pairs, 621 based on Foata normal form. 10/2128 useless extension candidates. Maximal degree in co-relation 4846. Up to 2033 conditions per place. [2024-06-28 03:41:27,812 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 41 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2024-06-28 03:41:27,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 53 transitions, 244 flow [2024-06-28 03:41:27,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:41:27,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:41:27,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-06-28 03:41:27,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56875 [2024-06-28 03:41:27,814 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 98 flow. Second operand 4 states and 91 transitions. [2024-06-28 03:41:27,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 53 transitions, 244 flow [2024-06-28 03:41:27,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:41:27,815 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 134 flow [2024-06-28 03:41:27,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-06-28 03:41:27,816 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2024-06-28 03:41:27,816 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 134 flow [2024-06-28 03:41:27,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:27,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:27,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:27,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:41:27,817 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:41:27,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:27,818 INFO L85 PathProgramCache]: Analyzing trace with hash 160299932, now seen corresponding path program 1 times [2024-06-28 03:41:27,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:27,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446141895] [2024-06-28 03:41:27,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:27,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:28,819 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 03:41:28,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:28,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446141895] [2024-06-28 03:41:28,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446141895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:28,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:28,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:41:28,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263224728] [2024-06-28 03:41:28,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:28,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:41:28,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:28,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:41:28,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:41:28,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:41:28,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 134 flow. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:28,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:28,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:41:28,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:29,162 INFO L124 PetriNetUnfolderBase]: 1380/2107 cut-off events. [2024-06-28 03:41:29,162 INFO L125 PetriNetUnfolderBase]: For 1135/1145 co-relation queries the response was YES. [2024-06-28 03:41:29,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5347 conditions, 2107 events. 1380/2107 cut-off events. For 1135/1145 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9882 event pairs, 481 based on Foata normal form. 14/2113 useless extension candidates. Maximal degree in co-relation 5333. Up to 1988 conditions per place. [2024-06-28 03:41:29,172 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 45 selfloop transitions, 9 changer transitions 0/59 dead transitions. [2024-06-28 03:41:29,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 59 transitions, 300 flow [2024-06-28 03:41:29,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:41:29,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:41:29,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2024-06-28 03:41:29,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.535 [2024-06-28 03:41:29,174 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 134 flow. Second operand 5 states and 107 transitions. [2024-06-28 03:41:29,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 59 transitions, 300 flow [2024-06-28 03:41:29,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 59 transitions, 286 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 03:41:29,177 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 155 flow [2024-06-28 03:41:29,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2024-06-28 03:41:29,177 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2024-06-28 03:41:29,178 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 155 flow [2024-06-28 03:41:29,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:29,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:29,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:29,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:41:29,178 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:41:29,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:29,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1494515606, now seen corresponding path program 1 times [2024-06-28 03:41:29,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:29,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537664267] [2024-06-28 03:41:29,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:29,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:29,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:29,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:29,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537664267] [2024-06-28 03:41:29,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537664267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:29,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:29,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:41:29,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235055876] [2024-06-28 03:41:29,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:29,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:41:29,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:29,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:41:29,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:41:29,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:41:29,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 155 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:29,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:29,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:41:29,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:30,030 INFO L124 PetriNetUnfolderBase]: 1126/1734 cut-off events. [2024-06-28 03:41:30,031 INFO L125 PetriNetUnfolderBase]: For 1698/1698 co-relation queries the response was YES. [2024-06-28 03:41:30,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4771 conditions, 1734 events. 1126/1734 cut-off events. For 1698/1698 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8160 event pairs, 594 based on Foata normal form. 2/1734 useless extension candidates. Maximal degree in co-relation 4755. Up to 1683 conditions per place. [2024-06-28 03:41:30,039 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 39 selfloop transitions, 8 changer transitions 0/52 dead transitions. [2024-06-28 03:41:30,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 52 transitions, 291 flow [2024-06-28 03:41:30,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:41:30,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:41:30,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-06-28 03:41:30,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445 [2024-06-28 03:41:30,041 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 155 flow. Second operand 5 states and 89 transitions. [2024-06-28 03:41:30,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 52 transitions, 291 flow [2024-06-28 03:41:30,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 52 transitions, 268 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:41:30,043 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 176 flow [2024-06-28 03:41:30,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=176, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-06-28 03:41:30,044 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 7 predicate places. [2024-06-28 03:41:30,044 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 176 flow [2024-06-28 03:41:30,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:30,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:30,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:30,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:41:30,045 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 03:41:30,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:30,045 INFO L85 PathProgramCache]: Analyzing trace with hash -906612192, now seen corresponding path program 1 times [2024-06-28 03:41:30,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:30,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685098191] [2024-06-28 03:41:30,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:30,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:30,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:30,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:30,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:30,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685098191] [2024-06-28 03:41:30,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685098191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:30,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:30,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:41:30,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659151426] [2024-06-28 03:41:30,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:30,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:41:30,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:30,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:41:30,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:41:30,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:41:30,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 176 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:30,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:30,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:41:30,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:31,262 INFO L124 PetriNetUnfolderBase]: 1121/1723 cut-off events. [2024-06-28 03:41:31,262 INFO L125 PetriNetUnfolderBase]: For 2508/2508 co-relation queries the response was YES. [2024-06-28 03:41:31,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5135 conditions, 1723 events. 1121/1723 cut-off events. For 2508/2508 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8162 event pairs, 579 based on Foata normal form. 2/1723 useless extension candidates. Maximal degree in co-relation 5117. Up to 1667 conditions per place. [2024-06-28 03:41:31,270 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 43 selfloop transitions, 11 changer transitions 0/59 dead transitions. [2024-06-28 03:41:31,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 59 transitions, 340 flow [2024-06-28 03:41:31,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:41:31,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:41:31,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-28 03:41:31,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 03:41:31,272 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 176 flow. Second operand 6 states and 105 transitions. [2024-06-28 03:41:31,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 59 transitions, 340 flow [2024-06-28 03:41:31,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 320 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:41:31,282 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 210 flow [2024-06-28 03:41:31,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=210, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-06-28 03:41:31,283 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-06-28 03:41:31,283 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 210 flow [2024-06-28 03:41:31,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:31,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:31,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:31,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:41:31,284 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 03:41:31,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:31,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1306634323, now seen corresponding path program 1 times [2024-06-28 03:41:31,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:31,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298748198] [2024-06-28 03:41:31,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:31,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:31,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:31,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:31,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298748198] [2024-06-28 03:41:31,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298748198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:31,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:31,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:41:31,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692070865] [2024-06-28 03:41:31,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:31,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:41:31,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:31,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:41:31,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:41:31,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:41:31,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 210 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:31,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:31,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:41:31,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:32,337 INFO L124 PetriNetUnfolderBase]: 1382/2113 cut-off events. [2024-06-28 03:41:32,338 INFO L125 PetriNetUnfolderBase]: For 4314/4328 co-relation queries the response was YES. [2024-06-28 03:41:32,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6705 conditions, 2113 events. 1382/2113 cut-off events. For 4314/4328 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9928 event pairs, 520 based on Foata normal form. 16/2126 useless extension candidates. Maximal degree in co-relation 6686. Up to 2004 conditions per place. [2024-06-28 03:41:32,349 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 52 selfloop transitions, 14 changer transitions 0/70 dead transitions. [2024-06-28 03:41:32,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 70 transitions, 422 flow [2024-06-28 03:41:32,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:41:32,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:41:32,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-28 03:41:32,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-28 03:41:32,351 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 210 flow. Second operand 6 states and 106 transitions. [2024-06-28 03:41:32,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 70 transitions, 422 flow [2024-06-28 03:41:32,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 70 transitions, 392 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 03:41:32,356 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 258 flow [2024-06-28 03:41:32,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2024-06-28 03:41:32,358 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-06-28 03:41:32,358 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 258 flow [2024-06-28 03:41:32,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:32,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:32,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:32,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:41:32,359 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 03:41:32,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:32,360 INFO L85 PathProgramCache]: Analyzing trace with hash 261661045, now seen corresponding path program 2 times [2024-06-28 03:41:32,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:32,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795989388] [2024-06-28 03:41:32,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:32,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:32,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:32,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:32,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795989388] [2024-06-28 03:41:32,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795989388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:32,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:32,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:41:32,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020556135] [2024-06-28 03:41:32,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:32,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:41:32,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:32,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:41:32,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:41:33,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:41:33,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 258 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:33,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:33,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:41:33,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:33,363 INFO L124 PetriNetUnfolderBase]: 1388/2127 cut-off events. [2024-06-28 03:41:33,363 INFO L125 PetriNetUnfolderBase]: For 6169/6176 co-relation queries the response was YES. [2024-06-28 03:41:33,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7362 conditions, 2127 events. 1388/2127 cut-off events. For 6169/6176 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9991 event pairs, 512 based on Foata normal form. 8/2132 useless extension candidates. Maximal degree in co-relation 7341. Up to 1961 conditions per place. [2024-06-28 03:41:33,375 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 52 selfloop transitions, 21 changer transitions 0/77 dead transitions. [2024-06-28 03:41:33,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 77 transitions, 534 flow [2024-06-28 03:41:33,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:41:33,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:41:33,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-28 03:41:33,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45416666666666666 [2024-06-28 03:41:33,411 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 258 flow. Second operand 6 states and 109 transitions. [2024-06-28 03:41:33,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 77 transitions, 534 flow [2024-06-28 03:41:33,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 77 transitions, 508 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-28 03:41:33,415 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 340 flow [2024-06-28 03:41:33,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=340, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2024-06-28 03:41:33,415 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 17 predicate places. [2024-06-28 03:41:33,415 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 340 flow [2024-06-28 03:41:33,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:33,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:33,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:33,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:41:33,416 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 03:41:33,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:33,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1484132077, now seen corresponding path program 1 times [2024-06-28 03:41:33,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:33,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174554989] [2024-06-28 03:41:33,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:33,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:33,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:34,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:34,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:34,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174554989] [2024-06-28 03:41:34,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174554989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:34,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:34,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:41:34,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693472221] [2024-06-28 03:41:34,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:34,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:41:34,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:34,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:41:34,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:41:34,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:41:34,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 340 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:34,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:34,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:41:34,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:34,994 INFO L124 PetriNetUnfolderBase]: 1345/2026 cut-off events. [2024-06-28 03:41:34,994 INFO L125 PetriNetUnfolderBase]: For 8149/8149 co-relation queries the response was YES. [2024-06-28 03:41:34,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7662 conditions, 2026 events. 1345/2026 cut-off events. For 8149/8149 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9423 event pairs, 524 based on Foata normal form. 2/2026 useless extension candidates. Maximal degree in co-relation 7639. Up to 1977 conditions per place. [2024-06-28 03:41:35,012 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 64 selfloop transitions, 17 changer transitions 0/85 dead transitions. [2024-06-28 03:41:35,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 85 transitions, 596 flow [2024-06-28 03:41:35,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:41:35,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:41:35,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 03:41:35,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:41:35,014 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 340 flow. Second operand 8 states and 130 transitions. [2024-06-28 03:41:35,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 85 transitions, 596 flow [2024-06-28 03:41:35,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 85 transitions, 566 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-28 03:41:35,021 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 400 flow [2024-06-28 03:41:35,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=400, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2024-06-28 03:41:35,023 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 24 predicate places. [2024-06-28 03:41:35,023 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 400 flow [2024-06-28 03:41:35,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:35,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:35,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:35,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:41:35,025 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:41:35,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:35,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1297703964, now seen corresponding path program 1 times [2024-06-28 03:41:35,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:35,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069611764] [2024-06-28 03:41:35,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:35,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:35,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:35,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:35,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:35,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069611764] [2024-06-28 03:41:35,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069611764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:35,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:35,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:41:35,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88486005] [2024-06-28 03:41:35,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:35,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:41:35,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:35,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:41:35,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:41:35,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:41:35,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 400 flow. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:35,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:35,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:41:35,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:35,923 INFO L124 PetriNetUnfolderBase]: 1613/2417 cut-off events. [2024-06-28 03:41:35,923 INFO L125 PetriNetUnfolderBase]: For 10746/10746 co-relation queries the response was YES. [2024-06-28 03:41:35,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9533 conditions, 2417 events. 1613/2417 cut-off events. For 10746/10746 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10942 event pairs, 559 based on Foata normal form. 2/2418 useless extension candidates. Maximal degree in co-relation 9507. Up to 2399 conditions per place. [2024-06-28 03:41:35,938 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 66 selfloop transitions, 8 changer transitions 0/77 dead transitions. [2024-06-28 03:41:35,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 77 transitions, 602 flow [2024-06-28 03:41:35,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:41:35,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:41:35,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2024-06-28 03:41:35,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39 [2024-06-28 03:41:35,939 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 400 flow. Second operand 5 states and 78 transitions. [2024-06-28 03:41:35,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 77 transitions, 602 flow [2024-06-28 03:41:35,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 77 transitions, 550 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 03:41:35,949 INFO L231 Difference]: Finished difference. Result has 66 places, 68 transitions, 416 flow [2024-06-28 03:41:35,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=416, PETRI_PLACES=66, PETRI_TRANSITIONS=68} [2024-06-28 03:41:35,950 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 25 predicate places. [2024-06-28 03:41:35,950 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 68 transitions, 416 flow [2024-06-28 03:41:35,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:35,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:35,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:35,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:41:35,951 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 03:41:35,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:35,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1959163430, now seen corresponding path program 1 times [2024-06-28 03:41:35,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:35,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610381052] [2024-06-28 03:41:35,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:35,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:36,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:36,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:36,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610381052] [2024-06-28 03:41:36,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610381052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:36,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:36,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:41:36,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419760584] [2024-06-28 03:41:36,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:36,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:41:36,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:36,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:41:36,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:41:37,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:41:37,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 68 transitions, 416 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:37,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:37,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:41:37,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:37,550 INFO L124 PetriNetUnfolderBase]: 1518/2314 cut-off events. [2024-06-28 03:41:37,551 INFO L125 PetriNetUnfolderBase]: For 11446/11459 co-relation queries the response was YES. [2024-06-28 03:41:37,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9450 conditions, 2314 events. 1518/2314 cut-off events. For 11446/11459 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10970 event pairs, 524 based on Foata normal form. 12/2324 useless extension candidates. Maximal degree in co-relation 9422. Up to 2194 conditions per place. [2024-06-28 03:41:37,563 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 64 selfloop transitions, 18 changer transitions 0/87 dead transitions. [2024-06-28 03:41:37,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 87 transitions, 630 flow [2024-06-28 03:41:37,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:41:37,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:41:37,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-28 03:41:37,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-28 03:41:37,566 INFO L175 Difference]: Start difference. First operand has 66 places, 68 transitions, 416 flow. Second operand 6 states and 106 transitions. [2024-06-28 03:41:37,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 87 transitions, 630 flow [2024-06-28 03:41:37,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 87 transitions, 612 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-28 03:41:37,576 INFO L231 Difference]: Finished difference. Result has 71 places, 68 transitions, 446 flow [2024-06-28 03:41:37,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=446, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2024-06-28 03:41:37,577 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 30 predicate places. [2024-06-28 03:41:37,578 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 446 flow [2024-06-28 03:41:37,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:37,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:37,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:37,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:41:37,579 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 03:41:37,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:37,579 INFO L85 PathProgramCache]: Analyzing trace with hash -229234969, now seen corresponding path program 1 times [2024-06-28 03:41:37,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:37,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031763819] [2024-06-28 03:41:37,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:37,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:37,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:38,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:38,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:38,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031763819] [2024-06-28 03:41:38,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031763819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:38,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:38,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:41:38,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156581292] [2024-06-28 03:41:38,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:38,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:41:38,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:38,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:41:38,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:41:38,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:41:38,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 446 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:38,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:38,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:41:38,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:38,864 INFO L124 PetriNetUnfolderBase]: 1561/2387 cut-off events. [2024-06-28 03:41:38,865 INFO L125 PetriNetUnfolderBase]: For 13954/13971 co-relation queries the response was YES. [2024-06-28 03:41:38,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10042 conditions, 2387 events. 1561/2387 cut-off events. For 13954/13971 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 11431 event pairs, 510 based on Foata normal form. 18/2402 useless extension candidates. Maximal degree in co-relation 10011. Up to 2241 conditions per place. [2024-06-28 03:41:38,879 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 71 selfloop transitions, 19 changer transitions 0/95 dead transitions. [2024-06-28 03:41:38,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 95 transitions, 720 flow [2024-06-28 03:41:38,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:41:38,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:41:38,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 03:41:38,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-06-28 03:41:38,881 INFO L175 Difference]: Start difference. First operand has 71 places, 68 transitions, 446 flow. Second operand 7 states and 122 transitions. [2024-06-28 03:41:38,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 95 transitions, 720 flow [2024-06-28 03:41:38,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 95 transitions, 675 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 03:41:38,891 INFO L231 Difference]: Finished difference. Result has 73 places, 71 transitions, 483 flow [2024-06-28 03:41:38,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=483, PETRI_PLACES=73, PETRI_TRANSITIONS=71} [2024-06-28 03:41:38,891 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 32 predicate places. [2024-06-28 03:41:38,891 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 71 transitions, 483 flow [2024-06-28 03:41:38,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:38,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:38,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:38,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:41:38,892 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 03:41:38,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:38,893 INFO L85 PathProgramCache]: Analyzing trace with hash -478435909, now seen corresponding path program 2 times [2024-06-28 03:41:38,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:38,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290440872] [2024-06-28 03:41:38,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:38,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:38,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:39,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:39,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:39,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290440872] [2024-06-28 03:41:39,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290440872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:39,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:39,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:41:39,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810131511] [2024-06-28 03:41:39,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:39,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:41:39,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:39,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:41:39,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:41:39,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:41:39,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 71 transitions, 483 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:39,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:39,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:41:39,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:40,135 INFO L124 PetriNetUnfolderBase]: 1633/2493 cut-off events. [2024-06-28 03:41:40,135 INFO L125 PetriNetUnfolderBase]: For 17759/17772 co-relation queries the response was YES. [2024-06-28 03:41:40,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11096 conditions, 2493 events. 1633/2493 cut-off events. For 17759/17772 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 12001 event pairs, 504 based on Foata normal form. 22/2513 useless extension candidates. Maximal degree in co-relation 11064. Up to 2263 conditions per place. [2024-06-28 03:41:40,148 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 74 selfloop transitions, 24 changer transitions 0/103 dead transitions. [2024-06-28 03:41:40,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 103 transitions, 863 flow [2024-06-28 03:41:40,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:41:40,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:41:40,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-28 03:41:40,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-28 03:41:40,150 INFO L175 Difference]: Start difference. First operand has 73 places, 71 transitions, 483 flow. Second operand 7 states and 125 transitions. [2024-06-28 03:41:40,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 103 transitions, 863 flow [2024-06-28 03:41:40,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 103 transitions, 805 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 03:41:40,161 INFO L231 Difference]: Finished difference. Result has 75 places, 78 transitions, 566 flow [2024-06-28 03:41:40,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=566, PETRI_PLACES=75, PETRI_TRANSITIONS=78} [2024-06-28 03:41:40,161 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 34 predicate places. [2024-06-28 03:41:40,162 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 78 transitions, 566 flow [2024-06-28 03:41:40,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:40,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:40,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:40,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:41:40,162 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 03:41:40,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:40,163 INFO L85 PathProgramCache]: Analyzing trace with hash -478441489, now seen corresponding path program 3 times [2024-06-28 03:41:40,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:40,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141972588] [2024-06-28 03:41:40,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:40,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:40,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:40,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:40,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141972588] [2024-06-28 03:41:40,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141972588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:40,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:40,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:41:40,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214345683] [2024-06-28 03:41:40,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:40,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:41:40,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:40,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:41:40,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:41:41,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:41:41,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 78 transitions, 566 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:41,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:41,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:41:41,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:41,377 INFO L124 PetriNetUnfolderBase]: 1639/2510 cut-off events. [2024-06-28 03:41:41,377 INFO L125 PetriNetUnfolderBase]: For 20913/20920 co-relation queries the response was YES. [2024-06-28 03:41:41,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11851 conditions, 2510 events. 1639/2510 cut-off events. For 20913/20920 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 12088 event pairs, 522 based on Foata normal form. 8/2515 useless extension candidates. Maximal degree in co-relation 11818. Up to 2303 conditions per place. [2024-06-28 03:41:41,392 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 73 selfloop transitions, 26 changer transitions 0/104 dead transitions. [2024-06-28 03:41:41,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 104 transitions, 870 flow [2024-06-28 03:41:41,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:41:41,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:41:41,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 03:41:41,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392857142857143 [2024-06-28 03:41:41,393 INFO L175 Difference]: Start difference. First operand has 75 places, 78 transitions, 566 flow. Second operand 7 states and 123 transitions. [2024-06-28 03:41:41,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 104 transitions, 870 flow [2024-06-28 03:41:41,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 104 transitions, 821 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 03:41:41,413 INFO L231 Difference]: Finished difference. Result has 79 places, 81 transitions, 625 flow [2024-06-28 03:41:41,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=625, PETRI_PLACES=79, PETRI_TRANSITIONS=81} [2024-06-28 03:41:41,413 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 38 predicate places. [2024-06-28 03:41:41,414 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 81 transitions, 625 flow [2024-06-28 03:41:41,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:41,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:41,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:41,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:41:41,414 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 03:41:41,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:41,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1236545068, now seen corresponding path program 1 times [2024-06-28 03:41:41,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:41,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91150544] [2024-06-28 03:41:41,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:41,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:42,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:42,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:42,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91150544] [2024-06-28 03:41:42,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91150544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:42,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:42,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:41:42,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38954794] [2024-06-28 03:41:42,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:42,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:41:42,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:42,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:41:42,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:41:42,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:41:42,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 81 transitions, 625 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 03:41:42,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:42,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:41:42,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:42,811 INFO L124 PetriNetUnfolderBase]: 1636/2493 cut-off events. [2024-06-28 03:41:42,811 INFO L125 PetriNetUnfolderBase]: For 24664/24664 co-relation queries the response was YES. [2024-06-28 03:41:42,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12259 conditions, 2493 events. 1636/2493 cut-off events. For 24664/24664 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 11540 event pairs, 533 based on Foata normal form. 8/2498 useless extension candidates. Maximal degree in co-relation 12224. Up to 2363 conditions per place. [2024-06-28 03:41:42,827 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 81 selfloop transitions, 20 changer transitions 0/107 dead transitions. [2024-06-28 03:41:42,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 107 transitions, 921 flow [2024-06-28 03:41:42,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:41:42,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:41:42,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 03:41:42,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-28 03:41:42,828 INFO L175 Difference]: Start difference. First operand has 79 places, 81 transitions, 625 flow. Second operand 8 states and 131 transitions. [2024-06-28 03:41:42,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 107 transitions, 921 flow [2024-06-28 03:41:42,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 107 transitions, 837 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 03:41:42,845 INFO L231 Difference]: Finished difference. Result has 82 places, 83 transitions, 626 flow [2024-06-28 03:41:42,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=626, PETRI_PLACES=82, PETRI_TRANSITIONS=83} [2024-06-28 03:41:42,846 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 41 predicate places. [2024-06-28 03:41:42,846 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 83 transitions, 626 flow [2024-06-28 03:41:42,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 03:41:42,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:42,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:42,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:41:42,847 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 03:41:42,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:42,847 INFO L85 PathProgramCache]: Analyzing trace with hash -2064936622, now seen corresponding path program 1 times [2024-06-28 03:41:42,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:42,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022198455] [2024-06-28 03:41:42,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:42,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:43,684 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 03:41:43,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:43,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022198455] [2024-06-28 03:41:43,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022198455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:43,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:43,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:41:43,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976708053] [2024-06-28 03:41:43,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:43,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:41:43,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:43,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:41:43,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:41:43,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:41:43,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 83 transitions, 626 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:43,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:43,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:41:43,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:44,229 INFO L124 PetriNetUnfolderBase]: 1640/2510 cut-off events. [2024-06-28 03:41:44,229 INFO L125 PetriNetUnfolderBase]: For 26507/26520 co-relation queries the response was YES. [2024-06-28 03:41:44,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12479 conditions, 2510 events. 1640/2510 cut-off events. For 26507/26520 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 12053 event pairs, 375 based on Foata normal form. 14/2522 useless extension candidates. Maximal degree in co-relation 12443. Up to 2344 conditions per place. [2024-06-28 03:41:44,243 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 88 selfloop transitions, 16 changer transitions 0/109 dead transitions. [2024-06-28 03:41:44,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 109 transitions, 928 flow [2024-06-28 03:41:44,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:41:44,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:41:44,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 03:41:44,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 03:41:44,245 INFO L175 Difference]: Start difference. First operand has 82 places, 83 transitions, 626 flow. Second operand 7 states and 120 transitions. [2024-06-28 03:41:44,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 109 transitions, 928 flow [2024-06-28 03:41:44,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 109 transitions, 861 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 03:41:44,261 INFO L231 Difference]: Finished difference. Result has 83 places, 85 transitions, 636 flow [2024-06-28 03:41:44,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=636, PETRI_PLACES=83, PETRI_TRANSITIONS=85} [2024-06-28 03:41:44,262 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 42 predicate places. [2024-06-28 03:41:44,262 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 85 transitions, 636 flow [2024-06-28 03:41:44,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:44,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:44,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:44,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:41:44,263 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 03:41:44,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:44,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1483531012, now seen corresponding path program 2 times [2024-06-28 03:41:44,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:44,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803953266] [2024-06-28 03:41:44,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:44,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:45,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:45,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:45,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803953266] [2024-06-28 03:41:45,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803953266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:45,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:45,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:41:45,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287262596] [2024-06-28 03:41:45,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:45,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:41:45,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:45,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:41:45,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:41:45,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:41:45,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 85 transitions, 636 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:45,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:45,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:41:45,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:45,778 INFO L124 PetriNetUnfolderBase]: 1657/2537 cut-off events. [2024-06-28 03:41:45,778 INFO L125 PetriNetUnfolderBase]: For 30015/30028 co-relation queries the response was YES. [2024-06-28 03:41:45,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12833 conditions, 2537 events. 1657/2537 cut-off events. For 30015/30028 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12210 event pairs, 475 based on Foata normal form. 14/2549 useless extension candidates. Maximal degree in co-relation 12796. Up to 2374 conditions per place. [2024-06-28 03:41:45,792 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 86 selfloop transitions, 20 changer transitions 0/111 dead transitions. [2024-06-28 03:41:45,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 111 transitions, 948 flow [2024-06-28 03:41:45,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:41:45,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:41:45,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-28 03:41:45,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43214285714285716 [2024-06-28 03:41:45,794 INFO L175 Difference]: Start difference. First operand has 83 places, 85 transitions, 636 flow. Second operand 7 states and 121 transitions. [2024-06-28 03:41:45,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 111 transitions, 948 flow [2024-06-28 03:41:45,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 111 transitions, 889 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 03:41:45,814 INFO L231 Difference]: Finished difference. Result has 85 places, 87 transitions, 667 flow [2024-06-28 03:41:45,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=667, PETRI_PLACES=85, PETRI_TRANSITIONS=87} [2024-06-28 03:41:45,814 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 44 predicate places. [2024-06-28 03:41:45,814 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 87 transitions, 667 flow [2024-06-28 03:41:45,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:45,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:45,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:45,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:41:45,815 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 03:41:45,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:45,816 INFO L85 PathProgramCache]: Analyzing trace with hash -2064876048, now seen corresponding path program 1 times [2024-06-28 03:41:45,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:45,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364540441] [2024-06-28 03:41:45,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:45,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:46,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:46,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:46,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364540441] [2024-06-28 03:41:46,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364540441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:46,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:46,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:41:46,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688147488] [2024-06-28 03:41:46,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:46,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:41:46,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:46,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:41:46,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:41:46,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:41:46,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 87 transitions, 667 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:46,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:46,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:41:46,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:47,276 INFO L124 PetriNetUnfolderBase]: 1652/2530 cut-off events. [2024-06-28 03:41:47,277 INFO L125 PetriNetUnfolderBase]: For 33345/33358 co-relation queries the response was YES. [2024-06-28 03:41:47,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13059 conditions, 2530 events. 1652/2530 cut-off events. For 33345/33358 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12194 event pairs, 460 based on Foata normal form. 12/2540 useless extension candidates. Maximal degree in co-relation 13021. Up to 2358 conditions per place. [2024-06-28 03:41:47,290 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 85 selfloop transitions, 24 changer transitions 0/114 dead transitions. [2024-06-28 03:41:47,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 114 transitions, 1003 flow [2024-06-28 03:41:47,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:41:47,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:41:47,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 03:41:47,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-06-28 03:41:47,292 INFO L175 Difference]: Start difference. First operand has 85 places, 87 transitions, 667 flow. Second operand 7 states and 122 transitions. [2024-06-28 03:41:47,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 114 transitions, 1003 flow [2024-06-28 03:41:47,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 114 transitions, 933 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 03:41:47,314 INFO L231 Difference]: Finished difference. Result has 87 places, 90 transitions, 717 flow [2024-06-28 03:41:47,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=717, PETRI_PLACES=87, PETRI_TRANSITIONS=90} [2024-06-28 03:41:47,315 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 46 predicate places. [2024-06-28 03:41:47,315 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 90 transitions, 717 flow [2024-06-28 03:41:47,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:47,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:47,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:47,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:41:47,316 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 03:41:47,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:47,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1946788492, now seen corresponding path program 3 times [2024-06-28 03:41:47,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:47,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160923807] [2024-06-28 03:41:47,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:47,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:48,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:48,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:48,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160923807] [2024-06-28 03:41:48,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160923807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:48,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:48,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:41:48,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190278885] [2024-06-28 03:41:48,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:48,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:41:48,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:48,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:41:48,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:41:48,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:41:48,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 90 transitions, 717 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:48,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:48,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:41:48,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:48,758 INFO L124 PetriNetUnfolderBase]: 1644/2521 cut-off events. [2024-06-28 03:41:48,758 INFO L125 PetriNetUnfolderBase]: For 37188/37195 co-relation queries the response was YES. [2024-06-28 03:41:48,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13378 conditions, 2521 events. 1644/2521 cut-off events. For 37188/37195 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 12144 event pairs, 467 based on Foata normal form. 8/2526 useless extension candidates. Maximal degree in co-relation 13339. Up to 2319 conditions per place. [2024-06-28 03:41:48,772 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 85 selfloop transitions, 25 changer transitions 0/115 dead transitions. [2024-06-28 03:41:48,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 115 transitions, 1043 flow [2024-06-28 03:41:48,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:41:48,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:41:48,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 03:41:48,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-06-28 03:41:48,774 INFO L175 Difference]: Start difference. First operand has 87 places, 90 transitions, 717 flow. Second operand 7 states and 122 transitions. [2024-06-28 03:41:48,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 115 transitions, 1043 flow [2024-06-28 03:41:48,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 115 transitions, 961 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 03:41:48,846 INFO L231 Difference]: Finished difference. Result has 89 places, 92 transitions, 740 flow [2024-06-28 03:41:48,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=740, PETRI_PLACES=89, PETRI_TRANSITIONS=92} [2024-06-28 03:41:48,847 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 48 predicate places. [2024-06-28 03:41:48,847 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 92 transitions, 740 flow [2024-06-28 03:41:48,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:48,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:48,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:48,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:41:48,847 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:41:48,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:48,848 INFO L85 PathProgramCache]: Analyzing trace with hash -2133031907, now seen corresponding path program 1 times [2024-06-28 03:41:48,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:48,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194119533] [2024-06-28 03:41:48,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:48,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:49,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:49,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:49,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194119533] [2024-06-28 03:41:49,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194119533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:49,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:49,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:41:49,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685293437] [2024-06-28 03:41:49,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:49,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:41:49,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:49,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:41:49,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:41:49,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:41:49,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 92 transitions, 740 flow. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:49,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:49,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:41:49,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:49,909 INFO L124 PetriNetUnfolderBase]: 1772/2654 cut-off events. [2024-06-28 03:41:49,909 INFO L125 PetriNetUnfolderBase]: For 42031/42044 co-relation queries the response was YES. [2024-06-28 03:41:49,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14105 conditions, 2654 events. 1772/2654 cut-off events. For 42031/42044 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12194 event pairs, 512 based on Foata normal form. 12/2664 useless extension candidates. Maximal degree in co-relation 14065. Up to 2613 conditions per place. [2024-06-28 03:41:49,923 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 88 selfloop transitions, 13 changer transitions 0/104 dead transitions. [2024-06-28 03:41:49,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 104 transitions, 990 flow [2024-06-28 03:41:49,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:41:49,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:41:49,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-06-28 03:41:49,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:41:49,928 INFO L175 Difference]: Start difference. First operand has 89 places, 92 transitions, 740 flow. Second operand 5 states and 80 transitions. [2024-06-28 03:41:49,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 104 transitions, 990 flow [2024-06-28 03:41:49,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 104 transitions, 903 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 03:41:49,961 INFO L231 Difference]: Finished difference. Result has 89 places, 95 transitions, 721 flow [2024-06-28 03:41:49,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=721, PETRI_PLACES=89, PETRI_TRANSITIONS=95} [2024-06-28 03:41:49,962 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 48 predicate places. [2024-06-28 03:41:49,962 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 95 transitions, 721 flow [2024-06-28 03:41:49,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:49,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:49,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:49,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:41:49,963 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:41:49,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:49,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1855375941, now seen corresponding path program 2 times [2024-06-28 03:41:49,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:49,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666360881] [2024-06-28 03:41:49,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:49,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:50,436 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 03:41:50,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:50,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666360881] [2024-06-28 03:41:50,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666360881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:50,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:50,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:41:50,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004833283] [2024-06-28 03:41:50,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:50,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:41:50,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:50,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:41:50,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:41:50,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:41:50,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 95 transitions, 721 flow. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:50,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:50,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:41:50,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:50,992 INFO L124 PetriNetUnfolderBase]: 1766/2646 cut-off events. [2024-06-28 03:41:50,992 INFO L125 PetriNetUnfolderBase]: For 43925/43938 co-relation queries the response was YES. [2024-06-28 03:41:50,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14323 conditions, 2646 events. 1766/2646 cut-off events. For 43925/43938 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12161 event pairs, 512 based on Foata normal form. 12/2656 useless extension candidates. Maximal degree in co-relation 14282. Up to 2597 conditions per place. [2024-06-28 03:41:51,004 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 90 selfloop transitions, 16 changer transitions 0/109 dead transitions. [2024-06-28 03:41:51,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 109 transitions, 991 flow [2024-06-28 03:41:51,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:41:51,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:41:51,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions. [2024-06-28 03:41:51,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-28 03:41:51,006 INFO L175 Difference]: Start difference. First operand has 89 places, 95 transitions, 721 flow. Second operand 6 states and 92 transitions. [2024-06-28 03:41:51,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 109 transitions, 991 flow [2024-06-28 03:41:51,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 109 transitions, 947 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-28 03:41:51,032 INFO L231 Difference]: Finished difference. Result has 92 places, 98 transitions, 753 flow [2024-06-28 03:41:51,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=753, PETRI_PLACES=92, PETRI_TRANSITIONS=98} [2024-06-28 03:41:51,033 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 51 predicate places. [2024-06-28 03:41:51,033 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 98 transitions, 753 flow [2024-06-28 03:41:51,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:51,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:51,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:51,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:41:51,034 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:41:51,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:51,034 INFO L85 PathProgramCache]: Analyzing trace with hash 327593707, now seen corresponding path program 1 times [2024-06-28 03:41:51,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:51,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593938570] [2024-06-28 03:41:51,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:51,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:51,664 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 03:41:51,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:51,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593938570] [2024-06-28 03:41:51,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593938570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:51,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:51,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:41:51,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815824136] [2024-06-28 03:41:51,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:51,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:41:51,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:51,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:41:51,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:41:51,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:41:51,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 98 transitions, 753 flow. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:51,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:51,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:41:51,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:52,086 INFO L124 PetriNetUnfolderBase]: 1784/2669 cut-off events. [2024-06-28 03:41:52,087 INFO L125 PetriNetUnfolderBase]: For 43637/43637 co-relation queries the response was YES. [2024-06-28 03:41:52,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14514 conditions, 2669 events. 1784/2669 cut-off events. For 43637/43637 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12182 event pairs, 505 based on Foata normal form. 2/2670 useless extension candidates. Maximal degree in co-relation 14472. Up to 2630 conditions per place. [2024-06-28 03:41:52,099 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 106 selfloop transitions, 15 changer transitions 0/124 dead transitions. [2024-06-28 03:41:52,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 124 transitions, 1153 flow [2024-06-28 03:41:52,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:41:52,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:41:52,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-06-28 03:41:52,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:41:52,101 INFO L175 Difference]: Start difference. First operand has 92 places, 98 transitions, 753 flow. Second operand 6 states and 96 transitions. [2024-06-28 03:41:52,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 124 transitions, 1153 flow [2024-06-28 03:41:52,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 124 transitions, 1100 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 03:41:52,127 INFO L231 Difference]: Finished difference. Result has 96 places, 109 transitions, 849 flow [2024-06-28 03:41:52,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=849, PETRI_PLACES=96, PETRI_TRANSITIONS=109} [2024-06-28 03:41:52,128 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 55 predicate places. [2024-06-28 03:41:52,128 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 109 transitions, 849 flow [2024-06-28 03:41:52,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:52,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:52,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:52,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:41:52,129 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:41:52,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:52,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1825156149, now seen corresponding path program 2 times [2024-06-28 03:41:52,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:52,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288008562] [2024-06-28 03:41:52,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:52,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:52,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:52,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:52,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288008562] [2024-06-28 03:41:52,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288008562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:52,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:52,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:41:52,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309671803] [2024-06-28 03:41:52,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:52,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:41:52,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:52,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:41:52,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:41:52,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:41:52,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 109 transitions, 849 flow. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:52,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:52,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:41:52,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:53,093 INFO L124 PetriNetUnfolderBase]: 1778/2661 cut-off events. [2024-06-28 03:41:53,094 INFO L125 PetriNetUnfolderBase]: For 47102/47102 co-relation queries the response was YES. [2024-06-28 03:41:53,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15065 conditions, 2661 events. 1778/2661 cut-off events. For 47102/47102 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12176 event pairs, 503 based on Foata normal form. 2/2662 useless extension candidates. Maximal degree in co-relation 15020. Up to 2640 conditions per place. [2024-06-28 03:41:53,111 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 106 selfloop transitions, 11 changer transitions 0/120 dead transitions. [2024-06-28 03:41:53,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 120 transitions, 1116 flow [2024-06-28 03:41:53,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:41:53,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:41:53,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-28 03:41:53,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37083333333333335 [2024-06-28 03:41:53,112 INFO L175 Difference]: Start difference. First operand has 96 places, 109 transitions, 849 flow. Second operand 6 states and 89 transitions. [2024-06-28 03:41:53,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 120 transitions, 1116 flow [2024-06-28 03:41:53,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 120 transitions, 1080 flow, removed 17 selfloop flow, removed 1 redundant places. [2024-06-28 03:41:53,145 INFO L231 Difference]: Finished difference. Result has 101 places, 110 transitions, 850 flow [2024-06-28 03:41:53,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=850, PETRI_PLACES=101, PETRI_TRANSITIONS=110} [2024-06-28 03:41:53,146 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 60 predicate places. [2024-06-28 03:41:53,146 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 110 transitions, 850 flow [2024-06-28 03:41:53,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:53,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:53,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:53,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:41:53,146 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:41:53,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:53,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1553026075, now seen corresponding path program 1 times [2024-06-28 03:41:53,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:53,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225635180] [2024-06-28 03:41:53,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:53,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:53,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:53,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:53,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225635180] [2024-06-28 03:41:53,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225635180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:53,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:53,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:41:53,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968180516] [2024-06-28 03:41:53,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:53,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:41:53,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:53,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:41:53,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:41:53,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:41:53,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 110 transitions, 850 flow. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:53,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:53,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:41:53,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:54,304 INFO L124 PetriNetUnfolderBase]: 1773/2654 cut-off events. [2024-06-28 03:41:54,305 INFO L125 PetriNetUnfolderBase]: For 50066/50066 co-relation queries the response was YES. [2024-06-28 03:41:54,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15164 conditions, 2654 events. 1773/2654 cut-off events. For 50066/50066 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12022 event pairs, 502 based on Foata normal form. 2/2655 useless extension candidates. Maximal degree in co-relation 15116. Up to 2630 conditions per place. [2024-06-28 03:41:54,318 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 107 selfloop transitions, 12 changer transitions 0/122 dead transitions. [2024-06-28 03:41:54,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 122 transitions, 1130 flow [2024-06-28 03:41:54,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:41:54,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:41:54,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-28 03:41:54,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37083333333333335 [2024-06-28 03:41:54,319 INFO L175 Difference]: Start difference. First operand has 101 places, 110 transitions, 850 flow. Second operand 6 states and 89 transitions. [2024-06-28 03:41:54,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 122 transitions, 1130 flow [2024-06-28 03:41:54,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 122 transitions, 1106 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 03:41:54,349 INFO L231 Difference]: Finished difference. Result has 103 places, 112 transitions, 877 flow [2024-06-28 03:41:54,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=877, PETRI_PLACES=103, PETRI_TRANSITIONS=112} [2024-06-28 03:41:54,350 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 62 predicate places. [2024-06-28 03:41:54,350 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 112 transitions, 877 flow [2024-06-28 03:41:54,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:54,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:54,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:54,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:41:54,351 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 03:41:54,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:54,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1308529306, now seen corresponding path program 1 times [2024-06-28 03:41:54,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:54,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034274272] [2024-06-28 03:41:54,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:54,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:55,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:55,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:55,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034274272] [2024-06-28 03:41:55,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034274272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:55,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:55,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:55,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036363293] [2024-06-28 03:41:55,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:55,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:55,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:55,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:55,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:55,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:41:55,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 112 transitions, 877 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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 03:41:55,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:55,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:41:55,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:56,081 INFO L124 PetriNetUnfolderBase]: 1672/2571 cut-off events. [2024-06-28 03:41:56,081 INFO L125 PetriNetUnfolderBase]: For 53449/53462 co-relation queries the response was YES. [2024-06-28 03:41:56,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15298 conditions, 2571 events. 1672/2571 cut-off events. For 53449/53462 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12362 event pairs, 330 based on Foata normal form. 14/2583 useless extension candidates. Maximal degree in co-relation 15250. Up to 2372 conditions per place. [2024-06-28 03:41:56,098 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 120 selfloop transitions, 18 changer transitions 0/143 dead transitions. [2024-06-28 03:41:56,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 143 transitions, 1271 flow [2024-06-28 03:41:56,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:41:56,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:41:56,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 03:41:56,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-28 03:41:56,100 INFO L175 Difference]: Start difference. First operand has 103 places, 112 transitions, 877 flow. Second operand 8 states and 135 transitions. [2024-06-28 03:41:56,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 143 transitions, 1271 flow [2024-06-28 03:41:56,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 143 transitions, 1236 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 03:41:56,135 INFO L231 Difference]: Finished difference. Result has 107 places, 114 transitions, 935 flow [2024-06-28 03:41:56,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=935, PETRI_PLACES=107, PETRI_TRANSITIONS=114} [2024-06-28 03:41:56,135 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 66 predicate places. [2024-06-28 03:41:56,135 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 114 transitions, 935 flow [2024-06-28 03:41:56,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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 03:41:56,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:56,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:56,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:41:56,136 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 03:41:56,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:56,136 INFO L85 PathProgramCache]: Analyzing trace with hash 413348816, now seen corresponding path program 2 times [2024-06-28 03:41:56,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:56,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814248827] [2024-06-28 03:41:56,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:56,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:57,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:57,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:57,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814248827] [2024-06-28 03:41:57,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814248827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:57,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:57,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:57,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574117819] [2024-06-28 03:41:57,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:57,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:57,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:57,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:57,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:57,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:41:57,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 114 transitions, 935 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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 03:41:57,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:57,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:41:57,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:57,987 INFO L124 PetriNetUnfolderBase]: 1714/2637 cut-off events. [2024-06-28 03:41:57,987 INFO L125 PetriNetUnfolderBase]: For 61487/61500 co-relation queries the response was YES. [2024-06-28 03:41:57,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16245 conditions, 2637 events. 1714/2637 cut-off events. For 61487/61500 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 12828 event pairs, 425 based on Foata normal form. 14/2649 useless extension candidates. Maximal degree in co-relation 16196. Up to 2441 conditions per place. [2024-06-28 03:41:58,003 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 118 selfloop transitions, 22 changer transitions 0/145 dead transitions. [2024-06-28 03:41:58,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 145 transitions, 1339 flow [2024-06-28 03:41:58,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:41:58,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:41:58,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 03:41:58,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 03:41:58,005 INFO L175 Difference]: Start difference. First operand has 107 places, 114 transitions, 935 flow. Second operand 8 states and 136 transitions. [2024-06-28 03:41:58,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 145 transitions, 1339 flow [2024-06-28 03:41:58,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 145 transitions, 1264 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 03:41:58,044 INFO L231 Difference]: Finished difference. Result has 109 places, 116 transitions, 965 flow [2024-06-28 03:41:58,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=965, PETRI_PLACES=109, PETRI_TRANSITIONS=116} [2024-06-28 03:41:58,045 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 68 predicate places. [2024-06-28 03:41:58,045 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 116 transitions, 965 flow [2024-06-28 03:41:58,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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 03:41:58,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:58,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:58,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:41:58,046 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 03:41:58,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:58,046 INFO L85 PathProgramCache]: Analyzing trace with hash 496469426, now seen corresponding path program 3 times [2024-06-28 03:41:58,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:58,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845920770] [2024-06-28 03:41:58,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:58,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:59,251 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 03:41:59,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:59,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845920770] [2024-06-28 03:41:59,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845920770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:59,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:59,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:59,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796704203] [2024-06-28 03:41:59,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:59,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:59,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:59,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:59,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:59,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:41:59,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 116 transitions, 965 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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 03:41:59,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:59,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:41:59,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:59,977 INFO L124 PetriNetUnfolderBase]: 1857/2869 cut-off events. [2024-06-28 03:41:59,978 INFO L125 PetriNetUnfolderBase]: For 68939/68943 co-relation queries the response was YES. [2024-06-28 03:41:59,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17677 conditions, 2869 events. 1857/2869 cut-off events. For 68939/68943 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14117 event pairs, 428 based on Foata normal form. 8/2876 useless extension candidates. Maximal degree in co-relation 17627. Up to 2602 conditions per place. [2024-06-28 03:41:59,995 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 138 selfloop transitions, 41 changer transitions 0/184 dead transitions. [2024-06-28 03:41:59,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 184 transitions, 1723 flow [2024-06-28 03:41:59,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:59,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:59,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-28 03:41:59,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43 [2024-06-28 03:41:59,997 INFO L175 Difference]: Start difference. First operand has 109 places, 116 transitions, 965 flow. Second operand 10 states and 172 transitions. [2024-06-28 03:41:59,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 184 transitions, 1723 flow [2024-06-28 03:42:00,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 184 transitions, 1598 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 03:42:00,104 INFO L231 Difference]: Finished difference. Result has 117 places, 145 transitions, 1290 flow [2024-06-28 03:42:00,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1290, PETRI_PLACES=117, PETRI_TRANSITIONS=145} [2024-06-28 03:42:00,105 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 76 predicate places. [2024-06-28 03:42:00,105 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 145 transitions, 1290 flow [2024-06-28 03:42:00,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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 03:42:00,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:00,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:00,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:42:00,106 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 03:42:00,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:00,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1393523866, now seen corresponding path program 4 times [2024-06-28 03:42:00,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:00,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205633422] [2024-06-28 03:42:00,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:00,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:00,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:01,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:01,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:01,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205633422] [2024-06-28 03:42:01,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205633422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:01,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:01,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:42:01,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966084158] [2024-06-28 03:42:01,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:01,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:42:01,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:01,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:42:01,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:42:01,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:42:01,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 145 transitions, 1290 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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 03:42:01,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:01,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:42:01,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:01,781 INFO L124 PetriNetUnfolderBase]: 1860/2884 cut-off events. [2024-06-28 03:42:01,781 INFO L125 PetriNetUnfolderBase]: For 74229/74250 co-relation queries the response was YES. [2024-06-28 03:42:01,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18314 conditions, 2884 events. 1860/2884 cut-off events. For 74229/74250 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 14323 event pairs, 428 based on Foata normal form. 22/2903 useless extension candidates. Maximal degree in co-relation 18259. Up to 2523 conditions per place. [2024-06-28 03:42:01,801 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 119 selfloop transitions, 53 changer transitions 0/177 dead transitions. [2024-06-28 03:42:01,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 177 transitions, 1790 flow [2024-06-28 03:42:01,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:42:01,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:42:01,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 03:42:01,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-28 03:42:01,802 INFO L175 Difference]: Start difference. First operand has 117 places, 145 transitions, 1290 flow. Second operand 8 states and 137 transitions. [2024-06-28 03:42:01,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 177 transitions, 1790 flow [2024-06-28 03:42:01,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 177 transitions, 1692 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-28 03:42:01,861 INFO L231 Difference]: Finished difference. Result has 121 places, 147 transitions, 1372 flow [2024-06-28 03:42:01,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1192, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1372, PETRI_PLACES=121, PETRI_TRANSITIONS=147} [2024-06-28 03:42:01,862 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 80 predicate places. [2024-06-28 03:42:01,862 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 147 transitions, 1372 flow [2024-06-28 03:42:01,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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 03:42:01,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:01,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:01,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:42:01,862 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 03:42:01,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:01,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1148925412, now seen corresponding path program 1 times [2024-06-28 03:42:01,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:01,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736474111] [2024-06-28 03:42:01,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:01,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:02,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:02,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:02,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736474111] [2024-06-28 03:42:02,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736474111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:02,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:02,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:42:02,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862721635] [2024-06-28 03:42:02,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:02,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:42:02,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:02,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:42:02,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:42:03,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:42:03,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 147 transitions, 1372 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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 03:42:03,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:03,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:42:03,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:03,642 INFO L124 PetriNetUnfolderBase]: 2090/3147 cut-off events. [2024-06-28 03:42:03,643 INFO L125 PetriNetUnfolderBase]: For 81280/81305 co-relation queries the response was YES. [2024-06-28 03:42:03,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19433 conditions, 3147 events. 2090/3147 cut-off events. For 81280/81305 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 14833 event pairs, 473 based on Foata normal form. 26/3168 useless extension candidates. Maximal degree in co-relation 19378. Up to 2870 conditions per place. [2024-06-28 03:42:03,663 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 141 selfloop transitions, 46 changer transitions 0/190 dead transitions. [2024-06-28 03:42:03,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 190 transitions, 1974 flow [2024-06-28 03:42:03,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:42:03,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:42:03,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 03:42:03,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40555555555555556 [2024-06-28 03:42:03,664 INFO L175 Difference]: Start difference. First operand has 121 places, 147 transitions, 1372 flow. Second operand 9 states and 146 transitions. [2024-06-28 03:42:03,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 190 transitions, 1974 flow [2024-06-28 03:42:03,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 190 transitions, 1810 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 03:42:03,744 INFO L231 Difference]: Finished difference. Result has 125 places, 155 transitions, 1436 flow [2024-06-28 03:42:03,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1436, PETRI_PLACES=125, PETRI_TRANSITIONS=155} [2024-06-28 03:42:03,745 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 84 predicate places. [2024-06-28 03:42:03,745 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 155 transitions, 1436 flow [2024-06-28 03:42:03,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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 03:42:03,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:03,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:03,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:42:03,746 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 03:42:03,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:03,746 INFO L85 PathProgramCache]: Analyzing trace with hash 323783089, now seen corresponding path program 1 times [2024-06-28 03:42:03,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:03,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167062784] [2024-06-28 03:42:03,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:03,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:04,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:04,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:04,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167062784] [2024-06-28 03:42:04,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167062784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:04,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:04,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:42:04,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125265360] [2024-06-28 03:42:04,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:04,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:42:04,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:04,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:42:04,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:42:04,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:42:04,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 155 transitions, 1436 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:04,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:04,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:42:04,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:04,958 INFO L124 PetriNetUnfolderBase]: 2142/3216 cut-off events. [2024-06-28 03:42:04,958 INFO L125 PetriNetUnfolderBase]: For 81454/81475 co-relation queries the response was YES. [2024-06-28 03:42:04,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20045 conditions, 3216 events. 2142/3216 cut-off events. For 81454/81475 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 15143 event pairs, 495 based on Foata normal form. 22/3235 useless extension candidates. Maximal degree in co-relation 19988. Up to 3046 conditions per place. [2024-06-28 03:42:04,976 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 143 selfloop transitions, 39 changer transitions 0/185 dead transitions. [2024-06-28 03:42:04,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 185 transitions, 2012 flow [2024-06-28 03:42:04,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:42:04,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:42:04,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-28 03:42:04,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-28 03:42:04,978 INFO L175 Difference]: Start difference. First operand has 125 places, 155 transitions, 1436 flow. Second operand 8 states and 125 transitions. [2024-06-28 03:42:04,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 185 transitions, 2012 flow [2024-06-28 03:42:05,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 185 transitions, 1869 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 03:42:05,049 INFO L231 Difference]: Finished difference. Result has 127 places, 161 transitions, 1468 flow [2024-06-28 03:42:05,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1293, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1468, PETRI_PLACES=127, PETRI_TRANSITIONS=161} [2024-06-28 03:42:05,050 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 86 predicate places. [2024-06-28 03:42:05,050 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 161 transitions, 1468 flow [2024-06-28 03:42:05,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:05,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:05,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:05,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:42:05,051 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 03:42:05,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:05,051 INFO L85 PathProgramCache]: Analyzing trace with hash 572920332, now seen corresponding path program 2 times [2024-06-28 03:42:05,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:05,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865879017] [2024-06-28 03:42:05,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:05,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:05,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:05,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:05,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865879017] [2024-06-28 03:42:05,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865879017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:05,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:05,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:42:05,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255789436] [2024-06-28 03:42:05,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:05,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:42:05,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:05,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:42:05,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:42:05,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:42:06,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 161 transitions, 1468 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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 03:42:06,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:06,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:42:06,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:06,563 INFO L124 PetriNetUnfolderBase]: 2186/3280 cut-off events. [2024-06-28 03:42:06,564 INFO L125 PetriNetUnfolderBase]: For 86856/86874 co-relation queries the response was YES. [2024-06-28 03:42:06,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20584 conditions, 3280 events. 2186/3280 cut-off events. For 86856/86874 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 15492 event pairs, 494 based on Foata normal form. 20/3297 useless extension candidates. Maximal degree in co-relation 20526. Up to 3014 conditions per place. [2024-06-28 03:42:06,586 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 167 selfloop transitions, 37 changer transitions 0/207 dead transitions. [2024-06-28 03:42:06,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 207 transitions, 2169 flow [2024-06-28 03:42:06,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:42:06,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:42:06,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 03:42:06,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41944444444444445 [2024-06-28 03:42:06,588 INFO L175 Difference]: Start difference. First operand has 127 places, 161 transitions, 1468 flow. Second operand 9 states and 151 transitions. [2024-06-28 03:42:06,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 207 transitions, 2169 flow [2024-06-28 03:42:06,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 207 transitions, 2090 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 03:42:06,680 INFO L231 Difference]: Finished difference. Result has 134 places, 170 transitions, 1555 flow [2024-06-28 03:42:06,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1389, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1555, PETRI_PLACES=134, PETRI_TRANSITIONS=170} [2024-06-28 03:42:06,681 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 93 predicate places. [2024-06-28 03:42:06,681 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 170 transitions, 1555 flow [2024-06-28 03:42:06,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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 03:42:06,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:06,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:06,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:42:06,682 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 03:42:06,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:06,682 INFO L85 PathProgramCache]: Analyzing trace with hash -319462136, now seen corresponding path program 5 times [2024-06-28 03:42:06,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:06,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734280587] [2024-06-28 03:42:06,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:06,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:07,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:07,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:07,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734280587] [2024-06-28 03:42:07,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734280587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:07,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:07,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:42:07,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161198052] [2024-06-28 03:42:07,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:07,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:42:07,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:07,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:42:07,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:42:07,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:42:07,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 170 transitions, 1555 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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 03:42:07,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:07,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:42:07,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:08,386 INFO L124 PetriNetUnfolderBase]: 2105/3245 cut-off events. [2024-06-28 03:42:08,387 INFO L125 PetriNetUnfolderBase]: For 104893/104921 co-relation queries the response was YES. [2024-06-28 03:42:08,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21404 conditions, 3245 events. 2105/3245 cut-off events. For 104893/104921 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 16314 event pairs, 445 based on Foata normal form. 44/3272 useless extension candidates. Maximal degree in co-relation 21342. Up to 2783 conditions per place. [2024-06-28 03:42:08,407 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 161 selfloop transitions, 39 changer transitions 0/207 dead transitions. [2024-06-28 03:42:08,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 207 transitions, 2253 flow [2024-06-28 03:42:08,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:42:08,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:42:08,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 03:42:08,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 03:42:08,409 INFO L175 Difference]: Start difference. First operand has 134 places, 170 transitions, 1555 flow. Second operand 8 states and 144 transitions. [2024-06-28 03:42:08,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 207 transitions, 2253 flow [2024-06-28 03:42:08,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 207 transitions, 2180 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 03:42:08,498 INFO L231 Difference]: Finished difference. Result has 138 places, 172 transitions, 1634 flow [2024-06-28 03:42:08,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1482, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1634, PETRI_PLACES=138, PETRI_TRANSITIONS=172} [2024-06-28 03:42:08,499 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 97 predicate places. [2024-06-28 03:42:08,499 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 172 transitions, 1634 flow [2024-06-28 03:42:08,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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 03:42:08,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:08,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:08,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:42:08,500 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 03:42:08,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:08,500 INFO L85 PathProgramCache]: Analyzing trace with hash 567206040, now seen corresponding path program 6 times [2024-06-28 03:42:08,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:08,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938449477] [2024-06-28 03:42:08,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:08,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:09,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:09,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:09,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938449477] [2024-06-28 03:42:09,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938449477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:09,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:09,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:42:09,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464040482] [2024-06-28 03:42:09,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:09,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:42:09,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:09,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:42:09,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:42:09,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:42:09,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 172 transitions, 1634 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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 03:42:09,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:09,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:42:09,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:10,245 INFO L124 PetriNetUnfolderBase]: 2122/3291 cut-off events. [2024-06-28 03:42:10,245 INFO L125 PetriNetUnfolderBase]: For 105167/105182 co-relation queries the response was YES. [2024-06-28 03:42:10,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22057 conditions, 3291 events. 2122/3291 cut-off events. For 105167/105182 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 16721 event pairs, 452 based on Foata normal form. 8/3287 useless extension candidates. Maximal degree in co-relation 21994. Up to 2932 conditions per place. [2024-06-28 03:42:10,270 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 146 selfloop transitions, 48 changer transitions 0/201 dead transitions. [2024-06-28 03:42:10,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 201 transitions, 2170 flow [2024-06-28 03:42:10,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:42:10,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:42:10,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 03:42:10,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-28 03:42:10,272 INFO L175 Difference]: Start difference. First operand has 138 places, 172 transitions, 1634 flow. Second operand 8 states and 138 transitions. [2024-06-28 03:42:10,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 201 transitions, 2170 flow [2024-06-28 03:42:10,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 201 transitions, 2066 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 03:42:10,376 INFO L231 Difference]: Finished difference. Result has 140 places, 174 transitions, 1701 flow [2024-06-28 03:42:10,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1530, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1701, PETRI_PLACES=140, PETRI_TRANSITIONS=174} [2024-06-28 03:42:10,377 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 99 predicate places. [2024-06-28 03:42:10,377 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 174 transitions, 1701 flow [2024-06-28 03:42:10,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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 03:42:10,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:10,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:10,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:42:10,378 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 03:42:10,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:10,378 INFO L85 PathProgramCache]: Analyzing trace with hash 572718522, now seen corresponding path program 3 times [2024-06-28 03:42:10,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:10,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491718944] [2024-06-28 03:42:10,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:10,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:11,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:11,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:11,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491718944] [2024-06-28 03:42:11,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491718944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:11,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:11,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:42:11,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97537375] [2024-06-28 03:42:11,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:11,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:42:11,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:11,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:42:11,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:42:11,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:42:11,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 174 transitions, 1701 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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 03:42:11,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:11,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:42:11,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:11,995 INFO L124 PetriNetUnfolderBase]: 2319/3499 cut-off events. [2024-06-28 03:42:11,995 INFO L125 PetriNetUnfolderBase]: For 107990/108008 co-relation queries the response was YES. [2024-06-28 03:42:12,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22787 conditions, 3499 events. 2319/3499 cut-off events. For 107990/108008 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 17003 event pairs, 539 based on Foata normal form. 20/3516 useless extension candidates. Maximal degree in co-relation 22723. Up to 3239 conditions per place. [2024-06-28 03:42:12,020 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 167 selfloop transitions, 38 changer transitions 0/208 dead transitions. [2024-06-28 03:42:12,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 208 transitions, 2229 flow [2024-06-28 03:42:12,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:42:12,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:42:12,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 03:42:12,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41388888888888886 [2024-06-28 03:42:12,021 INFO L175 Difference]: Start difference. First operand has 140 places, 174 transitions, 1701 flow. Second operand 9 states and 149 transitions. [2024-06-28 03:42:12,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 208 transitions, 2229 flow [2024-06-28 03:42:12,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 208 transitions, 2058 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-28 03:42:12,147 INFO L231 Difference]: Finished difference. Result has 143 places, 174 transitions, 1614 flow [2024-06-28 03:42:12,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1530, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1614, PETRI_PLACES=143, PETRI_TRANSITIONS=174} [2024-06-28 03:42:12,148 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 102 predicate places. [2024-06-28 03:42:12,148 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 174 transitions, 1614 flow [2024-06-28 03:42:12,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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 03:42:12,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:12,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:12,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:42:12,148 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:42:12,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:12,149 INFO L85 PathProgramCache]: Analyzing trace with hash 567202320, now seen corresponding path program 7 times [2024-06-28 03:42:12,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:12,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623133842] [2024-06-28 03:42:12,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:12,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:13,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:13,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:13,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623133842] [2024-06-28 03:42:13,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623133842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:13,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:13,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:42:13,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257493825] [2024-06-28 03:42:13,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:13,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:42:13,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:13,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:42:13,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:42:13,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:42:13,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 174 transitions, 1614 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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 03:42:13,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:13,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:42:13,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:13,830 INFO L124 PetriNetUnfolderBase]: 2104/3265 cut-off events. [2024-06-28 03:42:13,830 INFO L125 PetriNetUnfolderBase]: For 108349/108364 co-relation queries the response was YES. [2024-06-28 03:42:13,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21677 conditions, 3265 events. 2104/3265 cut-off events. For 108349/108364 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 16583 event pairs, 443 based on Foata normal form. 8/3261 useless extension candidates. Maximal degree in co-relation 21612. Up to 2906 conditions per place. [2024-06-28 03:42:13,854 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 149 selfloop transitions, 47 changer transitions 0/203 dead transitions. [2024-06-28 03:42:13,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 203 transitions, 2156 flow [2024-06-28 03:42:13,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:42:13,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:42:13,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 03:42:13,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-28 03:42:13,856 INFO L175 Difference]: Start difference. First operand has 143 places, 174 transitions, 1614 flow. Second operand 8 states and 137 transitions. [2024-06-28 03:42:13,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 203 transitions, 2156 flow [2024-06-28 03:42:13,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 203 transitions, 2016 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:13,996 INFO L231 Difference]: Finished difference. Result has 141 places, 176 transitions, 1647 flow [2024-06-28 03:42:13,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1478, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1647, PETRI_PLACES=141, PETRI_TRANSITIONS=176} [2024-06-28 03:42:13,997 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 100 predicate places. [2024-06-28 03:42:13,997 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 176 transitions, 1647 flow [2024-06-28 03:42:13,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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 03:42:13,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:13,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:13,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:42:13,998 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:42:13,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:13,998 INFO L85 PathProgramCache]: Analyzing trace with hash 567356142, now seen corresponding path program 4 times [2024-06-28 03:42:13,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:13,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255863418] [2024-06-28 03:42:13,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:13,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:14,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:14,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:14,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255863418] [2024-06-28 03:42:14,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255863418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:14,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:14,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:42:14,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508617658] [2024-06-28 03:42:14,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:14,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:42:14,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:14,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:42:14,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:42:14,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:42:14,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 176 transitions, 1647 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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 03:42:14,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:14,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:42:14,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:15,534 INFO L124 PetriNetUnfolderBase]: 2309/3488 cut-off events. [2024-06-28 03:42:15,534 INFO L125 PetriNetUnfolderBase]: For 107277/107287 co-relation queries the response was YES. [2024-06-28 03:42:15,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22048 conditions, 3488 events. 2309/3488 cut-off events. For 107277/107287 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 16880 event pairs, 524 based on Foata normal form. 8/3491 useless extension candidates. Maximal degree in co-relation 21984. Up to 3197 conditions per place. [2024-06-28 03:42:15,561 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 159 selfloop transitions, 52 changer transitions 0/214 dead transitions. [2024-06-28 03:42:15,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 214 transitions, 2259 flow [2024-06-28 03:42:15,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:42:15,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:42:15,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 03:42:15,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-28 03:42:15,562 INFO L175 Difference]: Start difference. First operand has 141 places, 176 transitions, 1647 flow. Second operand 9 states and 147 transitions. [2024-06-28 03:42:15,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 214 transitions, 2259 flow [2024-06-28 03:42:15,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 214 transitions, 2108 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 03:42:15,668 INFO L231 Difference]: Finished difference. Result has 145 places, 182 transitions, 1708 flow [2024-06-28 03:42:15,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1496, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1708, PETRI_PLACES=145, PETRI_TRANSITIONS=182} [2024-06-28 03:42:15,668 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 104 predicate places. [2024-06-28 03:42:15,669 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 182 transitions, 1708 flow [2024-06-28 03:42:15,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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 03:42:15,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:15,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:15,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:42:15,669 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:42:15,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:15,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1810528723, now seen corresponding path program 2 times [2024-06-28 03:42:15,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:15,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891046942] [2024-06-28 03:42:15,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:15,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:16,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:16,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:16,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891046942] [2024-06-28 03:42:16,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891046942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:16,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:16,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:42:16,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476632670] [2024-06-28 03:42:16,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:16,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:42:16,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:16,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:42:16,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:42:16,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:42:16,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 182 transitions, 1708 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:16,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:16,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:42:16,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:16,873 INFO L124 PetriNetUnfolderBase]: 2297/3472 cut-off events. [2024-06-28 03:42:16,874 INFO L125 PetriNetUnfolderBase]: For 110423/110433 co-relation queries the response was YES. [2024-06-28 03:42:16,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22245 conditions, 3472 events. 2297/3472 cut-off events. For 110423/110433 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 16818 event pairs, 556 based on Foata normal form. 8/3475 useless extension candidates. Maximal degree in co-relation 22179. Up to 3306 conditions per place. [2024-06-28 03:42:16,900 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 155 selfloop transitions, 37 changer transitions 0/195 dead transitions. [2024-06-28 03:42:16,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 195 transitions, 2134 flow [2024-06-28 03:42:16,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:42:16,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:42:16,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-06-28 03:42:16,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4041666666666667 [2024-06-28 03:42:16,902 INFO L175 Difference]: Start difference. First operand has 145 places, 182 transitions, 1708 flow. Second operand 6 states and 97 transitions. [2024-06-28 03:42:16,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 195 transitions, 2134 flow [2024-06-28 03:42:16,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 195 transitions, 1940 flow, removed 48 selfloop flow, removed 6 redundant places. [2024-06-28 03:42:16,994 INFO L231 Difference]: Finished difference. Result has 145 places, 182 transitions, 1594 flow [2024-06-28 03:42:16,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1514, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1594, PETRI_PLACES=145, PETRI_TRANSITIONS=182} [2024-06-28 03:42:16,995 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 104 predicate places. [2024-06-28 03:42:16,995 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 182 transitions, 1594 flow [2024-06-28 03:42:16,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:16,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:16,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:16,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:42:16,996 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:42:16,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:16,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1682078711, now seen corresponding path program 3 times [2024-06-28 03:42:16,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:16,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314953797] [2024-06-28 03:42:16,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:16,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:17,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:17,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:17,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314953797] [2024-06-28 03:42:17,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314953797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:17,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:17,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:42:17,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115551444] [2024-06-28 03:42:17,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:17,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:42:17,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:17,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:42:17,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:42:17,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:42:17,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 182 transitions, 1594 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:17,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:17,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:42:17,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:18,268 INFO L124 PetriNetUnfolderBase]: 2285/3456 cut-off events. [2024-06-28 03:42:18,269 INFO L125 PetriNetUnfolderBase]: For 112267/112277 co-relation queries the response was YES. [2024-06-28 03:42:18,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21873 conditions, 3456 events. 2285/3456 cut-off events. For 112267/112277 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 16719 event pairs, 552 based on Foata normal form. 8/3459 useless extension candidates. Maximal degree in co-relation 21806. Up to 3266 conditions per place. [2024-06-28 03:42:18,290 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 155 selfloop transitions, 42 changer transitions 0/200 dead transitions. [2024-06-28 03:42:18,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 200 transitions, 2082 flow [2024-06-28 03:42:18,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:42:18,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:42:18,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-06-28 03:42:18,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3892857142857143 [2024-06-28 03:42:18,292 INFO L175 Difference]: Start difference. First operand has 145 places, 182 transitions, 1594 flow. Second operand 7 states and 109 transitions. [2024-06-28 03:42:18,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 200 transitions, 2082 flow [2024-06-28 03:42:18,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 200 transitions, 2008 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 03:42:18,386 INFO L231 Difference]: Finished difference. Result has 147 places, 185 transitions, 1662 flow [2024-06-28 03:42:18,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1662, PETRI_PLACES=147, PETRI_TRANSITIONS=185} [2024-06-28 03:42:18,387 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 106 predicate places. [2024-06-28 03:42:18,387 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 185 transitions, 1662 flow [2024-06-28 03:42:18,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:18,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:18,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:18,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:42:18,387 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:42:18,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:18,388 INFO L85 PathProgramCache]: Analyzing trace with hash 692088929, now seen corresponding path program 1 times [2024-06-28 03:42:18,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:18,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142017364] [2024-06-28 03:42:18,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:18,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:19,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:19,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:19,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142017364] [2024-06-28 03:42:19,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142017364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:19,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:19,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:42:19,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848246699] [2024-06-28 03:42:19,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:19,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:42:19,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:19,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:42:19,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:42:19,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:42:19,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 185 transitions, 1662 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:19,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:19,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:42:19,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:19,720 INFO L124 PetriNetUnfolderBase]: 2303/3478 cut-off events. [2024-06-28 03:42:19,720 INFO L125 PetriNetUnfolderBase]: For 116918/116918 co-relation queries the response was YES. [2024-06-28 03:42:19,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22495 conditions, 3478 events. 2303/3478 cut-off events. For 116918/116918 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 16826 event pairs, 580 based on Foata normal form. 2/3479 useless extension candidates. Maximal degree in co-relation 22427. Up to 3403 conditions per place. [2024-06-28 03:42:19,747 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 187 selfloop transitions, 23 changer transitions 0/213 dead transitions. [2024-06-28 03:42:19,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 213 transitions, 2281 flow [2024-06-28 03:42:19,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:42:19,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:42:19,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-06-28 03:42:19,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:42:19,752 INFO L175 Difference]: Start difference. First operand has 147 places, 185 transitions, 1662 flow. Second operand 7 states and 112 transitions. [2024-06-28 03:42:19,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 213 transitions, 2281 flow [2024-06-28 03:42:19,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 213 transitions, 2161 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 03:42:19,876 INFO L231 Difference]: Finished difference. Result has 150 places, 193 transitions, 1681 flow [2024-06-28 03:42:19,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1681, PETRI_PLACES=150, PETRI_TRANSITIONS=193} [2024-06-28 03:42:19,877 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 109 predicate places. [2024-06-28 03:42:19,877 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 193 transitions, 1681 flow [2024-06-28 03:42:19,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:19,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:19,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:19,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:42:19,878 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 03:42:19,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:19,879 INFO L85 PathProgramCache]: Analyzing trace with hash 692238659, now seen corresponding path program 2 times [2024-06-28 03:42:19,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:19,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300229896] [2024-06-28 03:42:19,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:19,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:20,592 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 03:42:20,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:20,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300229896] [2024-06-28 03:42:20,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300229896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:20,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:20,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:42:20,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755465821] [2024-06-28 03:42:20,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:20,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:42:20,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:20,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:42:20,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:42:20,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:42:20,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 193 transitions, 1681 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:20,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:20,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:42:20,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:21,160 INFO L124 PetriNetUnfolderBase]: 2313/3492 cut-off events. [2024-06-28 03:42:21,160 INFO L125 PetriNetUnfolderBase]: For 123073/123073 co-relation queries the response was YES. [2024-06-28 03:42:21,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22968 conditions, 3492 events. 2313/3492 cut-off events. For 123073/123073 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 16912 event pairs, 581 based on Foata normal form. 2/3493 useless extension candidates. Maximal degree in co-relation 22898. Up to 3439 conditions per place. [2024-06-28 03:42:21,189 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 190 selfloop transitions, 19 changer transitions 0/212 dead transitions. [2024-06-28 03:42:21,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 212 transitions, 2186 flow [2024-06-28 03:42:21,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:42:21,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:42:21,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2024-06-28 03:42:21,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3821428571428571 [2024-06-28 03:42:21,191 INFO L175 Difference]: Start difference. First operand has 150 places, 193 transitions, 1681 flow. Second operand 7 states and 107 transitions. [2024-06-28 03:42:21,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 212 transitions, 2186 flow [2024-06-28 03:42:21,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 212 transitions, 2122 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-28 03:42:21,322 INFO L231 Difference]: Finished difference. Result has 154 places, 196 transitions, 1704 flow [2024-06-28 03:42:21,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1629, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1704, PETRI_PLACES=154, PETRI_TRANSITIONS=196} [2024-06-28 03:42:21,323 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 113 predicate places. [2024-06-28 03:42:21,323 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 196 transitions, 1704 flow [2024-06-28 03:42:21,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:21,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:21,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:21,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:42:21,324 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 03:42:21,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:21,324 INFO L85 PathProgramCache]: Analyzing trace with hash -767341096, now seen corresponding path program 1 times [2024-06-28 03:42:21,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:21,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140189549] [2024-06-28 03:42:21,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:21,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:21,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:22,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:22,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:22,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140189549] [2024-06-28 03:42:22,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140189549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:22,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:22,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:42:22,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906469428] [2024-06-28 03:42:22,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:22,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:42:22,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:22,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:42:22,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:42:22,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:42:22,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 196 transitions, 1704 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:22,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:22,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:42:22,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:22,781 INFO L124 PetriNetUnfolderBase]: 2310/3488 cut-off events. [2024-06-28 03:42:22,781 INFO L125 PetriNetUnfolderBase]: For 128967/128967 co-relation queries the response was YES. [2024-06-28 03:42:22,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23068 conditions, 3488 events. 2310/3488 cut-off events. For 128967/128967 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 16915 event pairs, 581 based on Foata normal form. 1/3488 useless extension candidates. Maximal degree in co-relation 22996. Up to 3452 conditions per place. [2024-06-28 03:42:22,805 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 190 selfloop transitions, 16 changer transitions 0/209 dead transitions. [2024-06-28 03:42:22,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 209 transitions, 2186 flow [2024-06-28 03:42:22,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:42:22,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:42:22,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 90 transitions. [2024-06-28 03:42:22,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 03:42:22,806 INFO L175 Difference]: Start difference. First operand has 154 places, 196 transitions, 1704 flow. Second operand 6 states and 90 transitions. [2024-06-28 03:42:22,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 209 transitions, 2186 flow [2024-06-28 03:42:22,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 209 transitions, 2142 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 03:42:22,924 INFO L231 Difference]: Finished difference. Result has 155 places, 199 transitions, 1748 flow [2024-06-28 03:42:22,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1660, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1748, PETRI_PLACES=155, PETRI_TRANSITIONS=199} [2024-06-28 03:42:22,924 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 114 predicate places. [2024-06-28 03:42:22,924 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 199 transitions, 1748 flow [2024-06-28 03:42:22,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:22,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:22,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:22,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:42:22,925 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 03:42:22,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:22,925 INFO L85 PathProgramCache]: Analyzing trace with hash 898892099, now seen corresponding path program 3 times [2024-06-28 03:42:22,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:22,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614585794] [2024-06-28 03:42:22,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:22,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:22,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:23,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:23,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:23,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614585794] [2024-06-28 03:42:23,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614585794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:23,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:23,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:42:23,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660934011] [2024-06-28 03:42:23,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:23,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:42:23,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:23,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:42:23,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:42:23,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:42:23,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 199 transitions, 1748 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:23,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:23,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:42:23,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:24,149 INFO L124 PetriNetUnfolderBase]: 2304/3480 cut-off events. [2024-06-28 03:42:24,149 INFO L125 PetriNetUnfolderBase]: For 132275/132275 co-relation queries the response was YES. [2024-06-28 03:42:24,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23370 conditions, 3480 events. 2304/3480 cut-off events. For 132275/132275 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 16836 event pairs, 576 based on Foata normal form. 2/3481 useless extension candidates. Maximal degree in co-relation 23297. Up to 3442 conditions per place. [2024-06-28 03:42:24,177 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 195 selfloop transitions, 14 changer transitions 0/212 dead transitions. [2024-06-28 03:42:24,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 212 transitions, 2211 flow [2024-06-28 03:42:24,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:42:24,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:42:24,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 101 transitions. [2024-06-28 03:42:24,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3607142857142857 [2024-06-28 03:42:24,179 INFO L175 Difference]: Start difference. First operand has 155 places, 199 transitions, 1748 flow. Second operand 7 states and 101 transitions. [2024-06-28 03:42:24,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 212 transitions, 2211 flow [2024-06-28 03:42:24,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 212 transitions, 2153 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 03:42:24,289 INFO L231 Difference]: Finished difference. Result has 158 places, 200 transitions, 1735 flow [2024-06-28 03:42:24,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1692, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1735, PETRI_PLACES=158, PETRI_TRANSITIONS=200} [2024-06-28 03:42:24,289 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 117 predicate places. [2024-06-28 03:42:24,289 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 200 transitions, 1735 flow [2024-06-28 03:42:24,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:24,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:24,290 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 03:42:24,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:42:24,290 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:42:24,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:24,290 INFO L85 PathProgramCache]: Analyzing trace with hash 439761391, now seen corresponding path program 1 times [2024-06-28 03:42:24,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:24,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542494023] [2024-06-28 03:42:24,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:24,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:25,618 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 03:42:25,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:25,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542494023] [2024-06-28 03:42:25,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542494023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:25,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:25,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:25,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088618727] [2024-06-28 03:42:25,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:25,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:25,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:25,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:25,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:25,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:42:25,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 200 transitions, 1735 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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 03:42:25,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:25,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:42:25,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:26,414 INFO L124 PetriNetUnfolderBase]: 2299/3472 cut-off events. [2024-06-28 03:42:26,414 INFO L125 PetriNetUnfolderBase]: For 136694/136712 co-relation queries the response was YES. [2024-06-28 03:42:26,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23387 conditions, 3472 events. 2299/3472 cut-off events. For 136694/136712 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 16830 event pairs, 468 based on Foata normal form. 18/3487 useless extension candidates. Maximal degree in co-relation 23313. Up to 3125 conditions per place. [2024-06-28 03:42:26,443 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 175 selfloop transitions, 65 changer transitions 0/243 dead transitions. [2024-06-28 03:42:26,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 243 transitions, 2459 flow [2024-06-28 03:42:26,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:42:26,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:42:26,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 03:42:26,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40555555555555556 [2024-06-28 03:42:26,445 INFO L175 Difference]: Start difference. First operand has 158 places, 200 transitions, 1735 flow. Second operand 9 states and 146 transitions. [2024-06-28 03:42:26,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 243 transitions, 2459 flow [2024-06-28 03:42:26,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 243 transitions, 2427 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 03:42:26,616 INFO L231 Difference]: Finished difference. Result has 163 places, 208 transitions, 1997 flow [2024-06-28 03:42:26,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1703, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1997, PETRI_PLACES=163, PETRI_TRANSITIONS=208} [2024-06-28 03:42:26,616 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 122 predicate places. [2024-06-28 03:42:26,616 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 208 transitions, 1997 flow [2024-06-28 03:42:26,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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 03:42:26,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:26,617 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 03:42:26,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:42:26,617 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 03:42:26,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:26,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1256950205, now seen corresponding path program 1 times [2024-06-28 03:42:26,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:26,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143544786] [2024-06-28 03:42:26,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:26,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:26,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:27,531 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 03:42:27,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:27,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143544786] [2024-06-28 03:42:27,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143544786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:27,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:27,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:27,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320161388] [2024-06-28 03:42:27,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:27,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:27,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:27,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:27,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:27,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:42:27,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 208 transitions, 1997 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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 03:42:27,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:27,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:42:27,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:28,387 INFO L124 PetriNetUnfolderBase]: 2408/3654 cut-off events. [2024-06-28 03:42:28,387 INFO L125 PetriNetUnfolderBase]: For 160933/160955 co-relation queries the response was YES. [2024-06-28 03:42:28,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25396 conditions, 3654 events. 2408/3654 cut-off events. For 160933/160955 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 18042 event pairs, 478 based on Foata normal form. 40/3689 useless extension candidates. Maximal degree in co-relation 25320. Up to 3201 conditions per place. [2024-06-28 03:42:28,416 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 205 selfloop transitions, 49 changer transitions 0/257 dead transitions. [2024-06-28 03:42:28,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 257 transitions, 2751 flow [2024-06-28 03:42:28,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:28,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:28,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 03:42:28,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41 [2024-06-28 03:42:28,418 INFO L175 Difference]: Start difference. First operand has 163 places, 208 transitions, 1997 flow. Second operand 10 states and 164 transitions. [2024-06-28 03:42:28,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 257 transitions, 2751 flow [2024-06-28 03:42:28,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 257 transitions, 2559 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-28 03:42:28,560 INFO L231 Difference]: Finished difference. Result has 167 places, 211 transitions, 1982 flow [2024-06-28 03:42:28,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1805, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1982, PETRI_PLACES=167, PETRI_TRANSITIONS=211} [2024-06-28 03:42:28,561 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 126 predicate places. [2024-06-28 03:42:28,561 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 211 transitions, 1982 flow [2024-06-28 03:42:28,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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 03:42:28,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:28,561 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 03:42:28,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:42:28,561 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:42:28,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:28,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1447454588, now seen corresponding path program 1 times [2024-06-28 03:42:28,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:28,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134026245] [2024-06-28 03:42:28,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:28,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:29,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:29,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:29,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134026245] [2024-06-28 03:42:29,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134026245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:29,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:29,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:42:29,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256728218] [2024-06-28 03:42:29,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:29,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:42:29,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:29,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:42:29,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:42:29,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:42:29,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 211 transitions, 1982 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:29,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:29,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:42:29,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:29,825 INFO L124 PetriNetUnfolderBase]: 2445/3703 cut-off events. [2024-06-28 03:42:29,825 INFO L125 PetriNetUnfolderBase]: For 159797/159815 co-relation queries the response was YES. [2024-06-28 03:42:29,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25819 conditions, 3703 events. 2445/3703 cut-off events. For 159797/159815 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 18302 event pairs, 503 based on Foata normal form. 18/3718 useless extension candidates. Maximal degree in co-relation 25742. Up to 3605 conditions per place. [2024-06-28 03:42:29,856 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 204 selfloop transitions, 34 changer transitions 0/241 dead transitions. [2024-06-28 03:42:29,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 241 transitions, 2741 flow [2024-06-28 03:42:29,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:42:29,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:42:29,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2024-06-28 03:42:29,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-28 03:42:29,858 INFO L175 Difference]: Start difference. First operand has 167 places, 211 transitions, 1982 flow. Second operand 7 states and 110 transitions. [2024-06-28 03:42:29,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 241 transitions, 2741 flow [2024-06-28 03:42:30,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 241 transitions, 2624 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 03:42:30,045 INFO L231 Difference]: Finished difference. Result has 168 places, 223 transitions, 2130 flow [2024-06-28 03:42:30,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1865, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2130, PETRI_PLACES=168, PETRI_TRANSITIONS=223} [2024-06-28 03:42:30,046 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 127 predicate places. [2024-06-28 03:42:30,046 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 223 transitions, 2130 flow [2024-06-28 03:42:30,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:30,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:30,046 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 03:42:30,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:42:30,047 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:42:30,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:30,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1447691738, now seen corresponding path program 2 times [2024-06-28 03:42:30,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:30,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105894938] [2024-06-28 03:42:30,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:30,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:30,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:30,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:30,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:30,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105894938] [2024-06-28 03:42:30,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105894938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:30,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:30,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:42:30,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482828232] [2024-06-28 03:42:30,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:30,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:42:30,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:30,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:42:30,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:42:30,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:42:30,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 223 transitions, 2130 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:30,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:30,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:42:30,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:31,248 INFO L124 PetriNetUnfolderBase]: 2467/3737 cut-off events. [2024-06-28 03:42:31,248 INFO L125 PetriNetUnfolderBase]: For 165076/165084 co-relation queries the response was YES. [2024-06-28 03:42:31,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26318 conditions, 3737 events. 2467/3737 cut-off events. For 165076/165084 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 18620 event pairs, 816 based on Foata normal form. 10/3745 useless extension candidates. Maximal degree in co-relation 26238. Up to 3681 conditions per place. [2024-06-28 03:42:31,280 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 224 selfloop transitions, 23 changer transitions 0/250 dead transitions. [2024-06-28 03:42:31,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 250 transitions, 2831 flow [2024-06-28 03:42:31,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:42:31,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:42:31,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2024-06-28 03:42:31,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-28 03:42:31,282 INFO L175 Difference]: Start difference. First operand has 168 places, 223 transitions, 2130 flow. Second operand 8 states and 114 transitions. [2024-06-28 03:42:31,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 250 transitions, 2831 flow [2024-06-28 03:42:31,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 250 transitions, 2764 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-28 03:42:31,452 INFO L231 Difference]: Finished difference. Result has 176 places, 236 transitions, 2311 flow [2024-06-28 03:42:31,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2069, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2311, PETRI_PLACES=176, PETRI_TRANSITIONS=236} [2024-06-28 03:42:31,452 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 135 predicate places. [2024-06-28 03:42:31,453 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 236 transitions, 2311 flow [2024-06-28 03:42:31,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:31,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:31,453 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 03:42:31,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:42:31,453 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:42:31,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:31,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1150725602, now seen corresponding path program 3 times [2024-06-28 03:42:31,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:31,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358644501] [2024-06-28 03:42:31,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:31,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:32,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:32,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:32,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358644501] [2024-06-28 03:42:32,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358644501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:32,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:32,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:42:32,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032950042] [2024-06-28 03:42:32,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:32,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:42:32,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:32,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:42:32,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:42:32,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:42:32,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 236 transitions, 2311 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:32,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:32,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:42:32,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:32,760 INFO L124 PetriNetUnfolderBase]: 2461/3731 cut-off events. [2024-06-28 03:42:32,761 INFO L125 PetriNetUnfolderBase]: For 163561/163573 co-relation queries the response was YES. [2024-06-28 03:42:32,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26225 conditions, 3731 events. 2461/3731 cut-off events. For 163561/163573 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 18545 event pairs, 817 based on Foata normal form. 14/3742 useless extension candidates. Maximal degree in co-relation 26141. Up to 3655 conditions per place. [2024-06-28 03:42:32,793 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 211 selfloop transitions, 32 changer transitions 0/246 dead transitions. [2024-06-28 03:42:32,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 246 transitions, 2831 flow [2024-06-28 03:42:32,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:42:32,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:42:32,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions. [2024-06-28 03:42:32,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-28 03:42:32,794 INFO L175 Difference]: Start difference. First operand has 176 places, 236 transitions, 2311 flow. Second operand 6 states and 92 transitions. [2024-06-28 03:42:32,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 246 transitions, 2831 flow [2024-06-28 03:42:32,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 246 transitions, 2726 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-28 03:42:32,965 INFO L231 Difference]: Finished difference. Result has 179 places, 236 transitions, 2284 flow [2024-06-28 03:42:32,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2206, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2284, PETRI_PLACES=179, PETRI_TRANSITIONS=236} [2024-06-28 03:42:32,966 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 138 predicate places. [2024-06-28 03:42:32,966 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 236 transitions, 2284 flow [2024-06-28 03:42:32,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:32,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:32,966 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 03:42:32,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:42:32,966 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 03:42:32,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:32,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1746791475, now seen corresponding path program 2 times [2024-06-28 03:42:32,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:32,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486888705] [2024-06-28 03:42:32,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:32,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:34,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:34,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:34,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486888705] [2024-06-28 03:42:34,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486888705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:34,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:34,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:34,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252221810] [2024-06-28 03:42:34,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:34,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:34,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:34,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:34,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:34,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:42:34,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 236 transitions, 2284 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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 03:42:34,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:34,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:42:34,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:35,606 INFO L124 PetriNetUnfolderBase]: 2536/3856 cut-off events. [2024-06-28 03:42:35,607 INFO L125 PetriNetUnfolderBase]: For 186048/186052 co-relation queries the response was YES. [2024-06-28 03:42:35,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27285 conditions, 3856 events. 2536/3856 cut-off events. For 186048/186052 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 19306 event pairs, 490 based on Foata normal form. 24/3875 useless extension candidates. Maximal degree in co-relation 27200. Up to 3427 conditions per place. [2024-06-28 03:42:35,643 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 216 selfloop transitions, 58 changer transitions 0/277 dead transitions. [2024-06-28 03:42:35,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 277 transitions, 3038 flow [2024-06-28 03:42:35,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:35,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:35,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 03:42:35,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41 [2024-06-28 03:42:35,645 INFO L175 Difference]: Start difference. First operand has 179 places, 236 transitions, 2284 flow. Second operand 10 states and 164 transitions. [2024-06-28 03:42:35,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 277 transitions, 3038 flow [2024-06-28 03:42:35,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 277 transitions, 2978 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 03:42:35,814 INFO L231 Difference]: Finished difference. Result has 185 places, 237 transitions, 2401 flow [2024-06-28 03:42:35,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2224, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2401, PETRI_PLACES=185, PETRI_TRANSITIONS=237} [2024-06-28 03:42:35,814 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 144 predicate places. [2024-06-28 03:42:35,814 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 237 transitions, 2401 flow [2024-06-28 03:42:35,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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 03:42:35,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:35,816 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 03:42:35,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:42:35,816 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 03:42:35,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:35,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1919520375, now seen corresponding path program 3 times [2024-06-28 03:42:35,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:35,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861315166] [2024-06-28 03:42:35,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:35,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:36,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:36,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:36,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861315166] [2024-06-28 03:42:36,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861315166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:36,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:36,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:42:36,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594845330] [2024-06-28 03:42:36,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:36,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:42:36,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:36,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:42:36,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:42:36,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:42:36,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 237 transitions, 2401 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:36,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:36,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:42:36,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:37,597 INFO L124 PetriNetUnfolderBase]: 2697/4128 cut-off events. [2024-06-28 03:42:37,598 INFO L125 PetriNetUnfolderBase]: For 205820/205832 co-relation queries the response was YES. [2024-06-28 03:42:37,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30137 conditions, 4128 events. 2697/4128 cut-off events. For 205820/205832 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 21399 event pairs, 826 based on Foata normal form. 28/4153 useless extension candidates. Maximal degree in co-relation 30051. Up to 3372 conditions per place. [2024-06-28 03:42:37,638 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 232 selfloop transitions, 48 changer transitions 0/283 dead transitions. [2024-06-28 03:42:37,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 283 transitions, 3435 flow [2024-06-28 03:42:37,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:42:37,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:42:37,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 03:42:37,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 03:42:37,640 INFO L175 Difference]: Start difference. First operand has 185 places, 237 transitions, 2401 flow. Second operand 9 states and 156 transitions. [2024-06-28 03:42:37,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 283 transitions, 3435 flow [2024-06-28 03:42:37,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 283 transitions, 3292 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 03:42:37,888 INFO L231 Difference]: Finished difference. Result has 187 places, 240 transitions, 2504 flow [2024-06-28 03:42:37,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2258, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2504, PETRI_PLACES=187, PETRI_TRANSITIONS=240} [2024-06-28 03:42:37,888 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 146 predicate places. [2024-06-28 03:42:37,888 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 240 transitions, 2504 flow [2024-06-28 03:42:37,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:37,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:37,889 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 03:42:37,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:42:37,889 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 03:42:37,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:37,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1913025255, now seen corresponding path program 4 times [2024-06-28 03:42:37,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:37,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517454849] [2024-06-28 03:42:37,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:37,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:38,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:38,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:38,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517454849] [2024-06-28 03:42:38,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517454849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:38,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:38,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:38,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394126000] [2024-06-28 03:42:38,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:38,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:38,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:38,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:38,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:38,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:42:38,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 240 transitions, 2504 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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 03:42:38,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:38,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:42:38,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:39,786 INFO L124 PetriNetUnfolderBase]: 2789/4280 cut-off events. [2024-06-28 03:42:39,787 INFO L125 PetriNetUnfolderBase]: For 220479/220491 co-relation queries the response was YES. [2024-06-28 03:42:39,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31320 conditions, 4280 events. 2789/4280 cut-off events. For 220479/220491 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 22566 event pairs, 889 based on Foata normal form. 32/4309 useless extension candidates. Maximal degree in co-relation 31232. Up to 3848 conditions per place. [2024-06-28 03:42:39,831 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 233 selfloop transitions, 48 changer transitions 0/284 dead transitions. [2024-06-28 03:42:39,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 284 transitions, 3322 flow [2024-06-28 03:42:39,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:39,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:39,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 03:42:39,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175 [2024-06-28 03:42:39,832 INFO L175 Difference]: Start difference. First operand has 187 places, 240 transitions, 2504 flow. Second operand 10 states and 167 transitions. [2024-06-28 03:42:39,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 284 transitions, 3322 flow [2024-06-28 03:42:40,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 284 transitions, 3234 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 03:42:40,147 INFO L231 Difference]: Finished difference. Result has 192 places, 242 transitions, 2605 flow [2024-06-28 03:42:40,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2416, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2605, PETRI_PLACES=192, PETRI_TRANSITIONS=242} [2024-06-28 03:42:40,147 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 151 predicate places. [2024-06-28 03:42:40,147 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 242 transitions, 2605 flow [2024-06-28 03:42:40,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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 03:42:40,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:40,148 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 03:42:40,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:42:40,148 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 03:42:40,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:40,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1919281365, now seen corresponding path program 5 times [2024-06-28 03:42:40,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:40,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222623018] [2024-06-28 03:42:40,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:40,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:41,170 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 03:42:41,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:41,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222623018] [2024-06-28 03:42:41,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222623018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:41,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:41,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:41,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780683875] [2024-06-28 03:42:41,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:41,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:41,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:41,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:41,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:41,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:42:41,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 242 transitions, 2605 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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 03:42:41,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:41,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:42:41,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:42,034 INFO L124 PetriNetUnfolderBase]: 2753/4224 cut-off events. [2024-06-28 03:42:42,034 INFO L125 PetriNetUnfolderBase]: For 211865/211877 co-relation queries the response was YES. [2024-06-28 03:42:42,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30295 conditions, 4224 events. 2753/4224 cut-off events. For 211865/211877 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 22151 event pairs, 862 based on Foata normal form. 32/4253 useless extension candidates. Maximal degree in co-relation 30205. Up to 3672 conditions per place. [2024-06-28 03:42:42,074 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 233 selfloop transitions, 48 changer transitions 0/284 dead transitions. [2024-06-28 03:42:42,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 284 transitions, 3343 flow [2024-06-28 03:42:42,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:42,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:42,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 03:42:42,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175 [2024-06-28 03:42:42,076 INFO L175 Difference]: Start difference. First operand has 192 places, 242 transitions, 2605 flow. Second operand 10 states and 167 transitions. [2024-06-28 03:42:42,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 284 transitions, 3343 flow [2024-06-28 03:42:42,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 284 transitions, 3194 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-28 03:42:42,466 INFO L231 Difference]: Finished difference. Result has 194 places, 242 transitions, 2562 flow [2024-06-28 03:42:42,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2456, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2562, PETRI_PLACES=194, PETRI_TRANSITIONS=242} [2024-06-28 03:42:42,466 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 153 predicate places. [2024-06-28 03:42:42,467 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 242 transitions, 2562 flow [2024-06-28 03:42:42,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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 03:42:42,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:42,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:42,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:42:42,467 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:42:42,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:42,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1144229924, now seen corresponding path program 1 times [2024-06-28 03:42:42,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:42,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771353014] [2024-06-28 03:42:42,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:42,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:43,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:43,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:43,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771353014] [2024-06-28 03:42:43,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771353014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:43,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:43,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:42:43,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711519188] [2024-06-28 03:42:43,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:43,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:42:43,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:43,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:42:43,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:42:43,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:42:43,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 242 transitions, 2562 flow. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:43,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:43,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:42:43,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:43,984 INFO L124 PetriNetUnfolderBase]: 2761/4231 cut-off events. [2024-06-28 03:42:43,985 INFO L125 PetriNetUnfolderBase]: For 197159/197171 co-relation queries the response was YES. [2024-06-28 03:42:44,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30049 conditions, 4231 events. 2761/4231 cut-off events. For 197159/197171 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 22198 event pairs, 902 based on Foata normal form. 14/4242 useless extension candidates. Maximal degree in co-relation 29958. Up to 4153 conditions per place. [2024-06-28 03:42:44,021 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 221 selfloop transitions, 30 changer transitions 0/254 dead transitions. [2024-06-28 03:42:44,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 254 transitions, 3130 flow [2024-06-28 03:42:44,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:42:44,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:42:44,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions. [2024-06-28 03:42:44,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-28 03:42:44,023 INFO L175 Difference]: Start difference. First operand has 194 places, 242 transitions, 2562 flow. Second operand 6 states and 92 transitions. [2024-06-28 03:42:44,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 254 transitions, 3130 flow [2024-06-28 03:42:44,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 254 transitions, 3020 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 03:42:44,292 INFO L231 Difference]: Finished difference. Result has 191 places, 244 transitions, 2560 flow [2024-06-28 03:42:44,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2452, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2560, PETRI_PLACES=191, PETRI_TRANSITIONS=244} [2024-06-28 03:42:44,293 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 150 predicate places. [2024-06-28 03:42:44,293 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 244 transitions, 2560 flow [2024-06-28 03:42:44,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:44,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:44,294 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 03:42:44,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 03:42:44,294 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:42:44,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:44,294 INFO L85 PathProgramCache]: Analyzing trace with hash -15860868, now seen corresponding path program 4 times [2024-06-28 03:42:44,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:44,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573649093] [2024-06-28 03:42:44,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:44,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:44,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:44,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:44,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573649093] [2024-06-28 03:42:44,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573649093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:44,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:44,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:42:44,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796465084] [2024-06-28 03:42:44,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:44,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:42:44,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:44,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:42:44,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:42:44,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:42:44,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 244 transitions, 2560 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:44,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:44,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:42:44,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:45,675 INFO L124 PetriNetUnfolderBase]: 2771/4250 cut-off events. [2024-06-28 03:42:45,675 INFO L125 PetriNetUnfolderBase]: For 204059/204071 co-relation queries the response was YES. [2024-06-28 03:42:45,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30199 conditions, 4250 events. 2771/4250 cut-off events. For 204059/204071 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 22366 event pairs, 904 based on Foata normal form. 14/4261 useless extension candidates. Maximal degree in co-relation 30107. Up to 4157 conditions per place. [2024-06-28 03:42:45,719 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 235 selfloop transitions, 26 changer transitions 0/264 dead transitions. [2024-06-28 03:42:45,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 264 transitions, 3196 flow [2024-06-28 03:42:45,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:42:45,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:42:45,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 108 transitions. [2024-06-28 03:42:45,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38571428571428573 [2024-06-28 03:42:45,721 INFO L175 Difference]: Start difference. First operand has 191 places, 244 transitions, 2560 flow. Second operand 7 states and 108 transitions. [2024-06-28 03:42:45,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 264 transitions, 3196 flow [2024-06-28 03:42:46,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 264 transitions, 3112 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 03:42:46,048 INFO L231 Difference]: Finished difference. Result has 194 places, 247 transitions, 2598 flow [2024-06-28 03:42:46,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2476, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2598, PETRI_PLACES=194, PETRI_TRANSITIONS=247} [2024-06-28 03:42:46,048 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 153 predicate places. [2024-06-28 03:42:46,049 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 247 transitions, 2598 flow [2024-06-28 03:42:46,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:46,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:46,049 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 03:42:46,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 03:42:46,049 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:42:46,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:46,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1867943036, now seen corresponding path program 5 times [2024-06-28 03:42:46,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:46,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142830212] [2024-06-28 03:42:46,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:46,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:46,595 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 03:42:46,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:46,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142830212] [2024-06-28 03:42:46,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142830212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:46,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:46,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:42:46,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148055314] [2024-06-28 03:42:46,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:46,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:42:46,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:46,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:42:46,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:42:46,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:42:46,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 247 transitions, 2598 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:46,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:46,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:42:46,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:47,277 INFO L124 PetriNetUnfolderBase]: 2789/4275 cut-off events. [2024-06-28 03:42:47,277 INFO L125 PetriNetUnfolderBase]: For 212961/212973 co-relation queries the response was YES. [2024-06-28 03:42:47,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30864 conditions, 4275 events. 2789/4275 cut-off events. For 212961/212973 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 22541 event pairs, 901 based on Foata normal form. 14/4286 useless extension candidates. Maximal degree in co-relation 30771. Up to 4117 conditions per place. [2024-06-28 03:42:47,320 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 218 selfloop transitions, 52 changer transitions 0/273 dead transitions. [2024-06-28 03:42:47,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 273 transitions, 3436 flow [2024-06-28 03:42:47,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:42:47,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:42:47,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 111 transitions. [2024-06-28 03:42:47,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3964285714285714 [2024-06-28 03:42:47,321 INFO L175 Difference]: Start difference. First operand has 194 places, 247 transitions, 2598 flow. Second operand 7 states and 111 transitions. [2024-06-28 03:42:47,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 273 transitions, 3436 flow [2024-06-28 03:42:47,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 273 transitions, 3286 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 03:42:47,665 INFO L231 Difference]: Finished difference. Result has 196 places, 256 transitions, 2734 flow [2024-06-28 03:42:47,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2448, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2734, PETRI_PLACES=196, PETRI_TRANSITIONS=256} [2024-06-28 03:42:47,666 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 155 predicate places. [2024-06-28 03:42:47,666 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 256 transitions, 2734 flow [2024-06-28 03:42:47,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:47,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:47,666 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 03:42:47,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 03:42:47,667 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:42:47,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:47,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1968227836, now seen corresponding path program 6 times [2024-06-28 03:42:47,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:47,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59076940] [2024-06-28 03:42:47,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:47,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:48,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:48,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:48,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59076940] [2024-06-28 03:42:48,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59076940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:48,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:48,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:42:48,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997846780] [2024-06-28 03:42:48,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:48,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:42:48,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:48,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:42:48,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:42:48,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:42:48,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 256 transitions, 2734 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:48,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:48,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:42:48,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:49,002 INFO L124 PetriNetUnfolderBase]: 2799/4284 cut-off events. [2024-06-28 03:42:49,003 INFO L125 PetriNetUnfolderBase]: For 221989/222001 co-relation queries the response was YES. [2024-06-28 03:42:49,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31530 conditions, 4284 events. 2799/4284 cut-off events. For 221989/222001 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 22477 event pairs, 907 based on Foata normal form. 14/4295 useless extension candidates. Maximal degree in co-relation 31436. Up to 4217 conditions per place. [2024-06-28 03:42:49,043 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 236 selfloop transitions, 31 changer transitions 0/270 dead transitions. [2024-06-28 03:42:49,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 270 transitions, 3376 flow [2024-06-28 03:42:49,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:42:49,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:42:49,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2024-06-28 03:42:49,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-28 03:42:49,045 INFO L175 Difference]: Start difference. First operand has 196 places, 256 transitions, 2734 flow. Second operand 8 states and 111 transitions. [2024-06-28 03:42:49,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 270 transitions, 3376 flow [2024-06-28 03:42:49,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 270 transitions, 3288 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-06-28 03:42:49,406 INFO L231 Difference]: Finished difference. Result has 201 places, 259 transitions, 2790 flow [2024-06-28 03:42:49,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2648, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2790, PETRI_PLACES=201, PETRI_TRANSITIONS=259} [2024-06-28 03:42:49,406 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 160 predicate places. [2024-06-28 03:42:49,406 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 259 transitions, 2790 flow [2024-06-28 03:42:49,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:49,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:49,407 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 03:42:49,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 03:42:49,407 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:42:49,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:49,407 INFO L85 PathProgramCache]: Analyzing trace with hash -599113958, now seen corresponding path program 7 times [2024-06-28 03:42:49,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:49,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148037360] [2024-06-28 03:42:49,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:49,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:49,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:49,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:49,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:49,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148037360] [2024-06-28 03:42:49,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148037360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:49,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:49,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:42:49,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367816714] [2024-06-28 03:42:49,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:49,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:42:49,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:49,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:42:49,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:42:50,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:42:50,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 259 transitions, 2790 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:50,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:50,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:42:50,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:50,694 INFO L124 PetriNetUnfolderBase]: 2793/4276 cut-off events. [2024-06-28 03:42:50,695 INFO L125 PetriNetUnfolderBase]: For 217864/217876 co-relation queries the response was YES. [2024-06-28 03:42:50,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31095 conditions, 4276 events. 2793/4276 cut-off events. For 217864/217876 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 22447 event pairs, 902 based on Foata normal form. 14/4287 useless extension candidates. Maximal degree in co-relation 30999. Up to 4183 conditions per place. [2024-06-28 03:42:50,737 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 226 selfloop transitions, 42 changer transitions 0/271 dead transitions. [2024-06-28 03:42:50,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 271 transitions, 3372 flow [2024-06-28 03:42:50,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:42:50,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:42:50,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-06-28 03:42:50,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-28 03:42:50,739 INFO L175 Difference]: Start difference. First operand has 201 places, 259 transitions, 2790 flow. Second operand 8 states and 113 transitions. [2024-06-28 03:42:50,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 271 transitions, 3372 flow [2024-06-28 03:42:51,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 271 transitions, 3204 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-28 03:42:51,094 INFO L231 Difference]: Finished difference. Result has 203 places, 259 transitions, 2712 flow [2024-06-28 03:42:51,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2622, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2712, PETRI_PLACES=203, PETRI_TRANSITIONS=259} [2024-06-28 03:42:51,095 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 162 predicate places. [2024-06-28 03:42:51,095 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 259 transitions, 2712 flow [2024-06-28 03:42:51,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:51,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:51,095 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 03:42:51,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 03:42:51,096 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:42:51,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:51,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1191777760, now seen corresponding path program 2 times [2024-06-28 03:42:51,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:51,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166283126] [2024-06-28 03:42:51,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:51,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:51,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:51,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:51,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166283126] [2024-06-28 03:42:51,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166283126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:51,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:51,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:42:51,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217511612] [2024-06-28 03:42:51,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:51,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:42:51,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:51,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:42:51,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:42:52,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:42:52,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 259 transitions, 2712 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 03:42:52,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:52,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:42:52,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:52,833 INFO L124 PetriNetUnfolderBase]: 2801/4288 cut-off events. [2024-06-28 03:42:52,833 INFO L125 PetriNetUnfolderBase]: For 224866/224878 co-relation queries the response was YES. [2024-06-28 03:42:52,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31249 conditions, 4288 events. 2801/4288 cut-off events. For 224866/224878 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 22519 event pairs, 904 based on Foata normal form. 14/4299 useless extension candidates. Maximal degree in co-relation 31153. Up to 4185 conditions per place. [2024-06-28 03:42:52,873 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 236 selfloop transitions, 37 changer transitions 0/276 dead transitions. [2024-06-28 03:42:52,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 276 transitions, 3476 flow [2024-06-28 03:42:52,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:42:52,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:42:52,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2024-06-28 03:42:52,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-28 03:42:52,875 INFO L175 Difference]: Start difference. First operand has 203 places, 259 transitions, 2712 flow. Second operand 7 states and 104 transitions. [2024-06-28 03:42:52,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 276 transitions, 3476 flow [2024-06-28 03:42:53,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 276 transitions, 3308 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 03:42:53,208 INFO L231 Difference]: Finished difference. Result has 202 places, 263 transitions, 2711 flow [2024-06-28 03:42:53,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2544, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2711, PETRI_PLACES=202, PETRI_TRANSITIONS=263} [2024-06-28 03:42:53,209 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 161 predicate places. [2024-06-28 03:42:53,209 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 263 transitions, 2711 flow [2024-06-28 03:42:53,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 03:42:53,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:53,209 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 03:42:53,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 03:42:53,209 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:42:53,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:53,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1191791710, now seen corresponding path program 3 times [2024-06-28 03:42:53,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:53,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69919131] [2024-06-28 03:42:53,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:53,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:54,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:54,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:54,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69919131] [2024-06-28 03:42:54,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69919131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:54,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:54,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:42:54,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005774680] [2024-06-28 03:42:54,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:54,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:42:54,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:54,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:42:54,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:42:54,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:42:54,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 263 transitions, 2711 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:54,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:54,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:42:54,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:54,905 INFO L124 PetriNetUnfolderBase]: 2796/4281 cut-off events. [2024-06-28 03:42:54,905 INFO L125 PetriNetUnfolderBase]: For 230843/230855 co-relation queries the response was YES. [2024-06-28 03:42:54,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31193 conditions, 4281 events. 2796/4281 cut-off events. For 230843/230855 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 22521 event pairs, 903 based on Foata normal form. 14/4292 useless extension candidates. Maximal degree in co-relation 31097. Up to 4201 conditions per place. [2024-06-28 03:42:54,947 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 238 selfloop transitions, 33 changer transitions 0/274 dead transitions. [2024-06-28 03:42:54,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 274 transitions, 3285 flow [2024-06-28 03:42:54,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:42:54,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:42:54,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 103 transitions. [2024-06-28 03:42:54,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3678571428571429 [2024-06-28 03:42:54,948 INFO L175 Difference]: Start difference. First operand has 202 places, 263 transitions, 2711 flow. Second operand 7 states and 103 transitions. [2024-06-28 03:42:54,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 274 transitions, 3285 flow [2024-06-28 03:42:55,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 274 transitions, 3181 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-06-28 03:42:55,321 INFO L231 Difference]: Finished difference. Result has 206 places, 263 transitions, 2678 flow [2024-06-28 03:42:55,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2607, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2678, PETRI_PLACES=206, PETRI_TRANSITIONS=263} [2024-06-28 03:42:55,321 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 165 predicate places. [2024-06-28 03:42:55,321 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 263 transitions, 2678 flow [2024-06-28 03:42:55,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:55,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:55,322 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 03:42:55,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 03:42:55,322 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 03:42:55,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:55,322 INFO L85 PathProgramCache]: Analyzing trace with hash -20198822, now seen corresponding path program 1 times [2024-06-28 03:42:55,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:55,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397283296] [2024-06-28 03:42:55,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:55,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:55,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:56,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:56,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:56,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397283296] [2024-06-28 03:42:56,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397283296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:56,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:56,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:42:56,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492376235] [2024-06-28 03:42:56,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:56,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:42:56,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:56,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:42:56,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:42:56,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:42:56,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 263 transitions, 2678 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:56,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:56,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:42:56,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:57,002 INFO L124 PetriNetUnfolderBase]: 2816/4314 cut-off events. [2024-06-28 03:42:57,002 INFO L125 PetriNetUnfolderBase]: For 241562/241574 co-relation queries the response was YES. [2024-06-28 03:42:57,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31553 conditions, 4314 events. 2816/4314 cut-off events. For 241562/241574 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 22773 event pairs, 909 based on Foata normal form. 16/4327 useless extension candidates. Maximal degree in co-relation 31455. Up to 4164 conditions per place. [2024-06-28 03:42:57,044 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 252 selfloop transitions, 34 changer transitions 0/289 dead transitions. [2024-06-28 03:42:57,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 289 transitions, 3410 flow [2024-06-28 03:42:57,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:42:57,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:42:57,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-28 03:42:57,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-28 03:42:57,045 INFO L175 Difference]: Start difference. First operand has 206 places, 263 transitions, 2678 flow. Second operand 8 states and 125 transitions. [2024-06-28 03:42:57,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 289 transitions, 3410 flow [2024-06-28 03:42:57,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 289 transitions, 3332 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:42:57,463 INFO L231 Difference]: Finished difference. Result has 208 places, 267 transitions, 2761 flow [2024-06-28 03:42:57,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2600, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2761, PETRI_PLACES=208, PETRI_TRANSITIONS=267} [2024-06-28 03:42:57,464 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 167 predicate places. [2024-06-28 03:42:57,464 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 267 transitions, 2761 flow [2024-06-28 03:42:57,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:57,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:57,464 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 03:42:57,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 03:42:57,465 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 03:42:57,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:57,465 INFO L85 PathProgramCache]: Analyzing trace with hash -20078852, now seen corresponding path program 2 times [2024-06-28 03:42:57,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:57,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647680029] [2024-06-28 03:42:57,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:57,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:58,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:58,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:58,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647680029] [2024-06-28 03:42:58,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647680029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:58,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:58,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:42:58,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978746166] [2024-06-28 03:42:58,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:58,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:42:58,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:58,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:42:58,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:42:58,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:42:58,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 267 transitions, 2761 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:58,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:58,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:42:58,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:58,931 INFO L124 PetriNetUnfolderBase]: 2834/4339 cut-off events. [2024-06-28 03:42:58,931 INFO L125 PetriNetUnfolderBase]: For 249579/249579 co-relation queries the response was YES. [2024-06-28 03:42:58,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32377 conditions, 4339 events. 2834/4339 cut-off events. For 249579/249579 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 22920 event pairs, 1368 based on Foata normal form. 2/4340 useless extension candidates. Maximal degree in co-relation 32278. Up to 4216 conditions per place. [2024-06-28 03:42:58,972 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 259 selfloop transitions, 36 changer transitions 0/298 dead transitions. [2024-06-28 03:42:58,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 298 transitions, 3720 flow [2024-06-28 03:42:58,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:42:58,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:42:58,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-28 03:42:58,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-28 03:42:58,974 INFO L175 Difference]: Start difference. First operand has 208 places, 267 transitions, 2761 flow. Second operand 8 states and 126 transitions. [2024-06-28 03:42:58,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 298 transitions, 3720 flow [2024-06-28 03:42:59,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 298 transitions, 3544 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-06-28 03:42:59,360 INFO L231 Difference]: Finished difference. Result has 212 places, 277 transitions, 2884 flow [2024-06-28 03:42:59,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2628, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2884, PETRI_PLACES=212, PETRI_TRANSITIONS=277} [2024-06-28 03:42:59,361 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 171 predicate places. [2024-06-28 03:42:59,361 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 277 transitions, 2884 flow [2024-06-28 03:42:59,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:59,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:59,361 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 03:42:59,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 03:42:59,361 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 03:42:59,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:59,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1284965386, now seen corresponding path program 3 times [2024-06-28 03:42:59,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:59,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917174984] [2024-06-28 03:42:59,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:59,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:59,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:00,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:00,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:00,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917174984] [2024-06-28 03:43:00,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917174984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:00,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:00,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:43:00,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919438745] [2024-06-28 03:43:00,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:00,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:43:00,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:00,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:43:00,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:43:00,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:43:00,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 277 transitions, 2884 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:00,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:00,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:43:00,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:00,861 INFO L124 PetriNetUnfolderBase]: 2844/4355 cut-off events. [2024-06-28 03:43:00,862 INFO L125 PetriNetUnfolderBase]: For 259794/259794 co-relation queries the response was YES. [2024-06-28 03:43:00,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32846 conditions, 4355 events. 2844/4355 cut-off events. For 259794/259794 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 23043 event pairs, 1370 based on Foata normal form. 2/4356 useless extension candidates. Maximal degree in co-relation 32744. Up to 4283 conditions per place. [2024-06-28 03:43:00,901 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 271 selfloop transitions, 23 changer transitions 0/297 dead transitions. [2024-06-28 03:43:00,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 297 transitions, 3609 flow [2024-06-28 03:43:00,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:43:00,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:43:00,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions. [2024-06-28 03:43:00,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-28 03:43:00,902 INFO L175 Difference]: Start difference. First operand has 212 places, 277 transitions, 2884 flow. Second operand 8 states and 119 transitions. [2024-06-28 03:43:00,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 297 transitions, 3609 flow [2024-06-28 03:43:01,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 297 transitions, 3516 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-28 03:43:01,347 INFO L231 Difference]: Finished difference. Result has 217 places, 280 transitions, 2918 flow [2024-06-28 03:43:01,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2801, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2918, PETRI_PLACES=217, PETRI_TRANSITIONS=280} [2024-06-28 03:43:01,347 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 176 predicate places. [2024-06-28 03:43:01,347 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 280 transitions, 2918 flow [2024-06-28 03:43:01,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:01,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:01,348 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 03:43:01,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 03:43:01,348 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 03:43:01,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:01,348 INFO L85 PathProgramCache]: Analyzing trace with hash -829973458, now seen corresponding path program 1 times [2024-06-28 03:43:01,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:01,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609500192] [2024-06-28 03:43:01,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:01,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:02,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:02,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:02,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609500192] [2024-06-28 03:43:02,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609500192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:02,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:02,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:43:02,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239819483] [2024-06-28 03:43:02,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:02,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:43:02,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:02,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:43:02,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:43:02,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:43:02,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 280 transitions, 2918 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 03:43:02,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:02,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:43:02,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:03,128 INFO L124 PetriNetUnfolderBase]: 2852/4367 cut-off events. [2024-06-28 03:43:03,129 INFO L125 PetriNetUnfolderBase]: For 267821/267821 co-relation queries the response was YES. [2024-06-28 03:43:03,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33062 conditions, 4367 events. 2852/4367 cut-off events. For 267821/267821 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 23071 event pairs, 1370 based on Foata normal form. 2/4368 useless extension candidates. Maximal degree in co-relation 32958. Up to 4305 conditions per place. [2024-06-28 03:43:03,168 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 275 selfloop transitions, 19 changer transitions 0/297 dead transitions. [2024-06-28 03:43:03,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 297 transitions, 3596 flow [2024-06-28 03:43:03,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:43:03,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:43:03,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 106 transitions. [2024-06-28 03:43:03,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37857142857142856 [2024-06-28 03:43:03,169 INFO L175 Difference]: Start difference. First operand has 217 places, 280 transitions, 2918 flow. Second operand 7 states and 106 transitions. [2024-06-28 03:43:03,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 297 transitions, 3596 flow [2024-06-28 03:43:03,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 297 transitions, 3510 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 03:43:03,722 INFO L231 Difference]: Finished difference. Result has 218 places, 282 transitions, 2917 flow [2024-06-28 03:43:03,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2832, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2917, PETRI_PLACES=218, PETRI_TRANSITIONS=282} [2024-06-28 03:43:03,723 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 177 predicate places. [2024-06-28 03:43:03,723 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 282 transitions, 2917 flow [2024-06-28 03:43:03,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 03:43:03,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:03,724 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 03:43:03,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 03:43:03,724 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 03:43:03,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:03,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1973949692, now seen corresponding path program 4 times [2024-06-28 03:43:03,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:03,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143414772] [2024-06-28 03:43:03,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:03,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:04,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:04,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:04,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143414772] [2024-06-28 03:43:04,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143414772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:04,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:04,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:43:04,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098501665] [2024-06-28 03:43:04,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:04,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:43:04,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:04,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:43:04,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:43:04,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:43:04,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 282 transitions, 2917 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:04,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:04,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:43:04,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:05,405 INFO L124 PetriNetUnfolderBase]: 2846/4359 cut-off events. [2024-06-28 03:43:05,405 INFO L125 PetriNetUnfolderBase]: For 273809/273809 co-relation queries the response was YES. [2024-06-28 03:43:05,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33107 conditions, 4359 events. 2846/4359 cut-off events. For 273809/273809 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 23083 event pairs, 1375 based on Foata normal form. 2/4360 useless extension candidates. Maximal degree in co-relation 33002. Up to 4302 conditions per place. [2024-06-28 03:43:05,443 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 275 selfloop transitions, 18 changer transitions 0/296 dead transitions. [2024-06-28 03:43:05,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 296 transitions, 3568 flow [2024-06-28 03:43:05,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:43:05,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:43:05,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-06-28 03:43:05,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-28 03:43:05,444 INFO L175 Difference]: Start difference. First operand has 218 places, 282 transitions, 2917 flow. Second operand 8 states and 113 transitions. [2024-06-28 03:43:05,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 296 transitions, 3568 flow [2024-06-28 03:43:05,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 296 transitions, 3455 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-28 03:43:05,974 INFO L231 Difference]: Finished difference. Result has 221 places, 283 transitions, 2863 flow [2024-06-28 03:43:05,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2810, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2863, PETRI_PLACES=221, PETRI_TRANSITIONS=283} [2024-06-28 03:43:05,975 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 180 predicate places. [2024-06-28 03:43:05,975 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 283 transitions, 2863 flow [2024-06-28 03:43:05,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:05,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:05,975 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 03:43:05,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 03:43:05,976 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:43:05,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:05,976 INFO L85 PathProgramCache]: Analyzing trace with hash -590825116, now seen corresponding path program 1 times [2024-06-28 03:43:05,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:05,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182098789] [2024-06-28 03:43:05,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:05,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:06,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:06,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:06,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182098789] [2024-06-28 03:43:06,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182098789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:06,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:06,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:43:06,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081528795] [2024-06-28 03:43:06,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:06,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:43:06,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:06,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:43:06,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:43:06,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:43:06,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 283 transitions, 2863 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:06,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:06,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:43:06,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:07,733 INFO L124 PetriNetUnfolderBase]: 2843/4355 cut-off events. [2024-06-28 03:43:07,734 INFO L125 PetriNetUnfolderBase]: For 278511/278511 co-relation queries the response was YES. [2024-06-28 03:43:07,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33042 conditions, 4355 events. 2843/4355 cut-off events. For 278511/278511 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 23033 event pairs, 1374 based on Foata normal form. 1/4355 useless extension candidates. Maximal degree in co-relation 32936. Up to 4297 conditions per place. [2024-06-28 03:43:07,773 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 271 selfloop transitions, 23 changer transitions 0/297 dead transitions. [2024-06-28 03:43:07,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 297 transitions, 3543 flow [2024-06-28 03:43:07,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:43:07,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:43:07,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions. [2024-06-28 03:43:07,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36428571428571427 [2024-06-28 03:43:07,774 INFO L175 Difference]: Start difference. First operand has 221 places, 283 transitions, 2863 flow. Second operand 7 states and 102 transitions. [2024-06-28 03:43:07,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 297 transitions, 3543 flow [2024-06-28 03:43:08,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 297 transitions, 3499 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 03:43:08,245 INFO L231 Difference]: Finished difference. Result has 222 places, 286 transitions, 2933 flow [2024-06-28 03:43:08,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2819, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2933, PETRI_PLACES=222, PETRI_TRANSITIONS=286} [2024-06-28 03:43:08,246 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 181 predicate places. [2024-06-28 03:43:08,246 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 286 transitions, 2933 flow [2024-06-28 03:43:08,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:08,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:08,246 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 03:43:08,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 03:43:08,247 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:43:08,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:08,247 INFO L85 PathProgramCache]: Analyzing trace with hash -590824868, now seen corresponding path program 2 times [2024-06-28 03:43:08,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:08,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127748993] [2024-06-28 03:43:08,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:08,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:09,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:09,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:09,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127748993] [2024-06-28 03:43:09,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127748993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:09,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:09,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:43:09,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079569380] [2024-06-28 03:43:09,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:09,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:43:09,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:09,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:43:09,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:43:09,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:43:09,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 286 transitions, 2933 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 03:43:09,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:09,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:43:09,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:09,999 INFO L124 PetriNetUnfolderBase]: 2851/4367 cut-off events. [2024-06-28 03:43:09,999 INFO L125 PetriNetUnfolderBase]: For 288910/288910 co-relation queries the response was YES. [2024-06-28 03:43:10,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33627 conditions, 4367 events. 2851/4367 cut-off events. For 288910/288910 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 23104 event pairs, 1378 based on Foata normal form. 2/4368 useless extension candidates. Maximal degree in co-relation 33520. Up to 4312 conditions per place. [2024-06-28 03:43:10,044 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 276 selfloop transitions, 20 changer transitions 0/299 dead transitions. [2024-06-28 03:43:10,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 299 transitions, 3603 flow [2024-06-28 03:43:10,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:43:10,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:43:10,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-28 03:43:10,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-28 03:43:10,046 INFO L175 Difference]: Start difference. First operand has 222 places, 286 transitions, 2933 flow. Second operand 8 states and 109 transitions. [2024-06-28 03:43:10,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 299 transitions, 3603 flow [2024-06-28 03:43:10,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 299 transitions, 3529 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 03:43:10,518 INFO L231 Difference]: Finished difference. Result has 225 places, 288 transitions, 2953 flow [2024-06-28 03:43:10,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2859, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2953, PETRI_PLACES=225, PETRI_TRANSITIONS=288} [2024-06-28 03:43:10,519 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 184 predicate places. [2024-06-28 03:43:10,519 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 288 transitions, 2953 flow [2024-06-28 03:43:10,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 03:43:10,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:10,520 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 03:43:10,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 03:43:10,520 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:43:10,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:10,520 INFO L85 PathProgramCache]: Analyzing trace with hash 2104429946, now seen corresponding path program 3 times [2024-06-28 03:43:10,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:10,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319087543] [2024-06-28 03:43:10,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:10,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:11,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:11,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:11,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319087543] [2024-06-28 03:43:11,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319087543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:11,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:11,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:43:11,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796443802] [2024-06-28 03:43:11,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:11,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:43:11,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:11,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:43:11,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:43:11,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:43:11,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 288 transitions, 2953 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:11,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:11,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:43:11,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:12,072 INFO L124 PetriNetUnfolderBase]: 2846/4360 cut-off events. [2024-06-28 03:43:12,073 INFO L125 PetriNetUnfolderBase]: For 295002/295002 co-relation queries the response was YES. [2024-06-28 03:43:12,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33718 conditions, 4360 events. 2846/4360 cut-off events. For 295002/295002 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 23032 event pairs, 1377 based on Foata normal form. 2/4361 useless extension candidates. Maximal degree in co-relation 33610. Up to 4308 conditions per place. [2024-06-28 03:43:12,117 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 283 selfloop transitions, 15 changer transitions 0/301 dead transitions. [2024-06-28 03:43:12,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 301 transitions, 3625 flow [2024-06-28 03:43:12,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:43:12,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:43:12,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 100 transitions. [2024-06-28 03:43:12,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-28 03:43:12,119 INFO L175 Difference]: Start difference. First operand has 225 places, 288 transitions, 2953 flow. Second operand 7 states and 100 transitions. [2024-06-28 03:43:12,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 301 transitions, 3625 flow [2024-06-28 03:43:12,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 301 transitions, 3539 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 03:43:12,636 INFO L231 Difference]: Finished difference. Result has 226 places, 290 transitions, 2954 flow [2024-06-28 03:43:12,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2867, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2954, PETRI_PLACES=226, PETRI_TRANSITIONS=290} [2024-06-28 03:43:12,637 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 185 predicate places. [2024-06-28 03:43:12,637 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 290 transitions, 2954 flow [2024-06-28 03:43:12,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:12,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:12,638 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 03:43:12,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 03:43:12,638 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 03:43:12,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:12,639 INFO L85 PathProgramCache]: Analyzing trace with hash -997869429, now seen corresponding path program 1 times [2024-06-28 03:43:12,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:12,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979752593] [2024-06-28 03:43:12,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:12,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:13,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:13,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:13,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979752593] [2024-06-28 03:43:13,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979752593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:13,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:13,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:13,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3754231] [2024-06-28 03:43:13,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:13,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:13,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:13,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:13,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:14,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:43:14,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 290 transitions, 2954 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:14,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:14,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:43:14,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:15,022 INFO L124 PetriNetUnfolderBase]: 2970/4559 cut-off events. [2024-06-28 03:43:15,023 INFO L125 PetriNetUnfolderBase]: For 318108/318120 co-relation queries the response was YES. [2024-06-28 03:43:15,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34895 conditions, 4559 events. 2970/4559 cut-off events. For 318108/318120 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 24368 event pairs, 883 based on Foata normal form. 24/4582 useless extension candidates. Maximal degree in co-relation 34787. Up to 4267 conditions per place. [2024-06-28 03:43:15,070 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 306 selfloop transitions, 48 changer transitions 0/357 dead transitions. [2024-06-28 03:43:15,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 357 transitions, 3985 flow [2024-06-28 03:43:15,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:43:15,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:43:15,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 190 transitions. [2024-06-28 03:43:15,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-28 03:43:15,072 INFO L175 Difference]: Start difference. First operand has 226 places, 290 transitions, 2954 flow. Second operand 12 states and 190 transitions. [2024-06-28 03:43:15,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 357 transitions, 3985 flow [2024-06-28 03:43:15,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 357 transitions, 3914 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 03:43:15,615 INFO L231 Difference]: Finished difference. Result has 238 places, 306 transitions, 3199 flow [2024-06-28 03:43:15,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2883, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3199, PETRI_PLACES=238, PETRI_TRANSITIONS=306} [2024-06-28 03:43:15,615 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 197 predicate places. [2024-06-28 03:43:15,615 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 306 transitions, 3199 flow [2024-06-28 03:43:15,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:15,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:15,616 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 03:43:15,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 03:43:15,616 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:43:15,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:15,616 INFO L85 PathProgramCache]: Analyzing trace with hash -90367477, now seen corresponding path program 2 times [2024-06-28 03:43:15,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:15,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841069986] [2024-06-28 03:43:15,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:15,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:16,977 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 03:43:16,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:16,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841069986] [2024-06-28 03:43:16,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841069986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:16,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:16,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:16,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457357207] [2024-06-28 03:43:16,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:16,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:16,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:16,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:16,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:17,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:43:17,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 306 transitions, 3199 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:17,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:17,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:43:17,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:18,134 INFO L124 PetriNetUnfolderBase]: 3116/4792 cut-off events. [2024-06-28 03:43:18,134 INFO L125 PetriNetUnfolderBase]: For 332837/332841 co-relation queries the response was YES. [2024-06-28 03:43:18,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36943 conditions, 4792 events. 3116/4792 cut-off events. For 332837/332841 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 26011 event pairs, 866 based on Foata normal form. 16/4807 useless extension candidates. Maximal degree in co-relation 36829. Up to 4474 conditions per place. [2024-06-28 03:43:18,187 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 314 selfloop transitions, 58 changer transitions 0/375 dead transitions. [2024-06-28 03:43:18,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 375 transitions, 4348 flow [2024-06-28 03:43:18,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:43:18,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:43:18,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 190 transitions. [2024-06-28 03:43:18,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-28 03:43:18,188 INFO L175 Difference]: Start difference. First operand has 238 places, 306 transitions, 3199 flow. Second operand 12 states and 190 transitions. [2024-06-28 03:43:18,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 375 transitions, 4348 flow [2024-06-28 03:43:18,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 375 transitions, 4261 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 03:43:18,819 INFO L231 Difference]: Finished difference. Result has 251 places, 325 transitions, 3530 flow [2024-06-28 03:43:18,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3112, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3530, PETRI_PLACES=251, PETRI_TRANSITIONS=325} [2024-06-28 03:43:18,820 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 210 predicate places. [2024-06-28 03:43:18,820 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 325 transitions, 3530 flow [2024-06-28 03:43:18,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:18,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:18,820 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 03:43:18,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 03:43:18,820 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:43:18,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:18,821 INFO L85 PathProgramCache]: Analyzing trace with hash 218119320, now seen corresponding path program 1 times [2024-06-28 03:43:18,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:18,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822223728] [2024-06-28 03:43:18,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:18,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:20,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:20,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:20,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822223728] [2024-06-28 03:43:20,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822223728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:20,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:20,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:20,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989809676] [2024-06-28 03:43:20,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:20,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:20,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:20,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:20,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:20,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:43:20,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 325 transitions, 3530 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:20,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:20,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:43:20,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:21,642 INFO L124 PetriNetUnfolderBase]: 3446/5312 cut-off events. [2024-06-28 03:43:21,643 INFO L125 PetriNetUnfolderBase]: For 364131/364135 co-relation queries the response was YES. [2024-06-28 03:43:21,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40265 conditions, 5312 events. 3446/5312 cut-off events. For 364131/364135 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 29339 event pairs, 903 based on Foata normal form. 20/5331 useless extension candidates. Maximal degree in co-relation 40145. Up to 4724 conditions per place. [2024-06-28 03:43:21,707 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 323 selfloop transitions, 87 changer transitions 0/413 dead transitions. [2024-06-28 03:43:21,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 413 transitions, 4954 flow [2024-06-28 03:43:21,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:43:21,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:43:21,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 196 transitions. [2024-06-28 03:43:21,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-28 03:43:21,709 INFO L175 Difference]: Start difference. First operand has 251 places, 325 transitions, 3530 flow. Second operand 12 states and 196 transitions. [2024-06-28 03:43:21,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 413 transitions, 4954 flow [2024-06-28 03:43:22,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 413 transitions, 4847 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 03:43:22,494 INFO L231 Difference]: Finished difference. Result has 261 places, 361 transitions, 4124 flow [2024-06-28 03:43:22,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3423, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4124, PETRI_PLACES=261, PETRI_TRANSITIONS=361} [2024-06-28 03:43:22,495 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 220 predicate places. [2024-06-28 03:43:22,495 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 361 transitions, 4124 flow [2024-06-28 03:43:22,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:22,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:22,496 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 03:43:22,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 03:43:22,496 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:43:22,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:22,496 INFO L85 PathProgramCache]: Analyzing trace with hash 229052183, now seen corresponding path program 3 times [2024-06-28 03:43:22,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:22,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068551750] [2024-06-28 03:43:22,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:22,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:24,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:24,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:24,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068551750] [2024-06-28 03:43:24,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068551750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:24,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:24,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:24,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898215691] [2024-06-28 03:43:24,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:24,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:24,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:24,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:24,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:24,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:43:24,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 361 transitions, 4124 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:24,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:24,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:43:24,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:25,471 INFO L124 PetriNetUnfolderBase]: 3528/5450 cut-off events. [2024-06-28 03:43:25,471 INFO L125 PetriNetUnfolderBase]: For 373207/373211 co-relation queries the response was YES. [2024-06-28 03:43:25,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41896 conditions, 5450 events. 3528/5450 cut-off events. For 373207/373211 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 30409 event pairs, 922 based on Foata normal form. 16/5465 useless extension candidates. Maximal degree in co-relation 41771. Up to 4716 conditions per place. [2024-06-28 03:43:25,526 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 324 selfloop transitions, 83 changer transitions 0/410 dead transitions. [2024-06-28 03:43:25,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 410 transitions, 5217 flow [2024-06-28 03:43:25,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:25,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:25,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-28 03:43:25,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41363636363636364 [2024-06-28 03:43:25,528 INFO L175 Difference]: Start difference. First operand has 261 places, 361 transitions, 4124 flow. Second operand 11 states and 182 transitions. [2024-06-28 03:43:25,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 410 transitions, 5217 flow [2024-06-28 03:43:26,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 410 transitions, 5063 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 03:43:26,488 INFO L231 Difference]: Finished difference. Result has 265 places, 363 transitions, 4250 flow [2024-06-28 03:43:26,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3970, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4250, PETRI_PLACES=265, PETRI_TRANSITIONS=363} [2024-06-28 03:43:26,489 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 224 predicate places. [2024-06-28 03:43:26,489 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 363 transitions, 4250 flow [2024-06-28 03:43:26,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:26,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:26,489 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 03:43:26,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 03:43:26,490 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:43:26,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:26,490 INFO L85 PathProgramCache]: Analyzing trace with hash 224225483, now seen corresponding path program 4 times [2024-06-28 03:43:26,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:26,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548939463] [2024-06-28 03:43:26,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:26,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:28,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:28,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:28,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548939463] [2024-06-28 03:43:28,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548939463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:28,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:28,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:28,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834215572] [2024-06-28 03:43:28,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:28,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:28,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:28,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:28,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:28,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:43:28,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 363 transitions, 4250 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:28,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:28,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:43:28,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:29,514 INFO L124 PetriNetUnfolderBase]: 3625/5614 cut-off events. [2024-06-28 03:43:29,514 INFO L125 PetriNetUnfolderBase]: For 383850/383854 co-relation queries the response was YES. [2024-06-28 03:43:29,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43007 conditions, 5614 events. 3625/5614 cut-off events. For 383850/383854 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 31712 event pairs, 1015 based on Foata normal form. 16/5629 useless extension candidates. Maximal degree in co-relation 42881. Up to 5131 conditions per place. [2024-06-28 03:43:29,584 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 333 selfloop transitions, 85 changer transitions 0/421 dead transitions. [2024-06-28 03:43:29,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 421 transitions, 5397 flow [2024-06-28 03:43:29,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:43:29,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:43:29,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 193 transitions. [2024-06-28 03:43:29,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40208333333333335 [2024-06-28 03:43:29,586 INFO L175 Difference]: Start difference. First operand has 265 places, 363 transitions, 4250 flow. Second operand 12 states and 193 transitions. [2024-06-28 03:43:29,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 421 transitions, 5397 flow [2024-06-28 03:43:30,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 421 transitions, 5213 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 03:43:30,582 INFO L231 Difference]: Finished difference. Result has 270 places, 371 transitions, 4413 flow [2024-06-28 03:43:30,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4066, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4413, PETRI_PLACES=270, PETRI_TRANSITIONS=371} [2024-06-28 03:43:30,583 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 229 predicate places. [2024-06-28 03:43:30,583 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 371 transitions, 4413 flow [2024-06-28 03:43:30,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:30,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:30,584 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 03:43:30,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 03:43:30,584 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:43:30,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:30,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1518685667, now seen corresponding path program 5 times [2024-06-28 03:43:30,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:30,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994304281] [2024-06-28 03:43:30,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:30,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:32,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:32,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:32,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994304281] [2024-06-28 03:43:32,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994304281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:32,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:32,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:32,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365642108] [2024-06-28 03:43:32,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:32,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:32,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:32,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:32,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:32,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:43:32,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 371 transitions, 4413 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:32,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:32,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:43:32,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:33,809 INFO L124 PetriNetUnfolderBase]: 3806/5904 cut-off events. [2024-06-28 03:43:33,809 INFO L125 PetriNetUnfolderBase]: For 399635/399645 co-relation queries the response was YES. [2024-06-28 03:43:33,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44875 conditions, 5904 events. 3806/5904 cut-off events. For 399635/399645 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 33579 event pairs, 1014 based on Foata normal form. 22/5925 useless extension candidates. Maximal degree in co-relation 44746. Up to 5471 conditions per place. [2024-06-28 03:43:33,882 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 377 selfloop transitions, 60 changer transitions 0/440 dead transitions. [2024-06-28 03:43:33,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 440 transitions, 5668 flow [2024-06-28 03:43:33,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:43:33,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:43:33,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 188 transitions. [2024-06-28 03:43:33,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39166666666666666 [2024-06-28 03:43:33,883 INFO L175 Difference]: Start difference. First operand has 270 places, 371 transitions, 4413 flow. Second operand 12 states and 188 transitions. [2024-06-28 03:43:33,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 440 transitions, 5668 flow [2024-06-28 03:43:34,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 440 transitions, 5501 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-28 03:43:34,731 INFO L231 Difference]: Finished difference. Result has 279 places, 390 transitions, 4643 flow [2024-06-28 03:43:34,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4246, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4643, PETRI_PLACES=279, PETRI_TRANSITIONS=390} [2024-06-28 03:43:34,732 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 238 predicate places. [2024-06-28 03:43:34,732 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 390 transitions, 4643 flow [2024-06-28 03:43:34,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:34,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:34,733 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 03:43:34,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 03:43:34,733 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 03:43:34,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:34,733 INFO L85 PathProgramCache]: Analyzing trace with hash -656342676, now seen corresponding path program 1 times [2024-06-28 03:43:34,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:34,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181585380] [2024-06-28 03:43:34,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:34,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:35,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:35,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:35,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181585380] [2024-06-28 03:43:35,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181585380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:35,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:35,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:43:35,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131644239] [2024-06-28 03:43:35,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:35,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:43:35,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:35,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:43:35,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:43:35,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:43:35,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 390 transitions, 4643 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:35,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:35,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:43:35,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:36,844 INFO L124 PetriNetUnfolderBase]: 3906/6059 cut-off events. [2024-06-28 03:43:36,844 INFO L125 PetriNetUnfolderBase]: For 434136/434146 co-relation queries the response was YES. [2024-06-28 03:43:36,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47263 conditions, 6059 events. 3906/6059 cut-off events. For 434136/434146 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 34558 event pairs, 686 based on Foata normal form. 18/6073 useless extension candidates. Maximal degree in co-relation 47128. Up to 5626 conditions per place. [2024-06-28 03:43:36,919 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 356 selfloop transitions, 58 changer transitions 0/417 dead transitions. [2024-06-28 03:43:36,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 417 transitions, 5805 flow [2024-06-28 03:43:36,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:43:36,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:43:36,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-28 03:43:36,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 03:43:36,920 INFO L175 Difference]: Start difference. First operand has 279 places, 390 transitions, 4643 flow. Second operand 7 states and 119 transitions. [2024-06-28 03:43:36,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 417 transitions, 5805 flow [2024-06-28 03:43:37,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 417 transitions, 5672 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-28 03:43:37,926 INFO L231 Difference]: Finished difference. Result has 280 places, 392 transitions, 4679 flow [2024-06-28 03:43:37,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4510, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4679, PETRI_PLACES=280, PETRI_TRANSITIONS=392} [2024-06-28 03:43:37,935 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 239 predicate places. [2024-06-28 03:43:37,935 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 392 transitions, 4679 flow [2024-06-28 03:43:37,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:37,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:37,936 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 03:43:37,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 03:43:37,936 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 03:43:37,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:37,936 INFO L85 PathProgramCache]: Analyzing trace with hash 2000593702, now seen corresponding path program 2 times [2024-06-28 03:43:37,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:37,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259441273] [2024-06-28 03:43:37,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:37,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:37,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:38,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:38,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:38,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259441273] [2024-06-28 03:43:38,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259441273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:38,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:38,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:43:38,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616750821] [2024-06-28 03:43:38,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:38,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:43:38,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:38,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:43:38,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:43:38,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:43:38,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 392 transitions, 4679 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:38,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:38,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:43:38,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:39,812 INFO L124 PetriNetUnfolderBase]: 3793/5918 cut-off events. [2024-06-28 03:43:39,812 INFO L125 PetriNetUnfolderBase]: For 425186/425216 co-relation queries the response was YES. [2024-06-28 03:43:39,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45546 conditions, 5918 events. 3793/5918 cut-off events. For 425186/425216 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 34175 event pairs, 866 based on Foata normal form. 39/5935 useless extension candidates. Maximal degree in co-relation 45410. Up to 5564 conditions per place. [2024-06-28 03:43:39,891 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 329 selfloop transitions, 49 changer transitions 0/408 dead transitions. [2024-06-28 03:43:39,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 408 transitions, 5539 flow [2024-06-28 03:43:39,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:43:39,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:43:39,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-28 03:43:39,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42916666666666664 [2024-06-28 03:43:39,892 INFO L175 Difference]: Start difference. First operand has 280 places, 392 transitions, 4679 flow. Second operand 6 states and 103 transitions. [2024-06-28 03:43:39,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 408 transitions, 5539 flow [2024-06-28 03:43:40,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 408 transitions, 5467 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 03:43:40,862 INFO L231 Difference]: Finished difference. Result has 283 places, 392 transitions, 4717 flow [2024-06-28 03:43:40,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4607, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4717, PETRI_PLACES=283, PETRI_TRANSITIONS=392} [2024-06-28 03:43:40,862 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 242 predicate places. [2024-06-28 03:43:40,862 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 392 transitions, 4717 flow [2024-06-28 03:43:40,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:40,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:40,863 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 03:43:40,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 03:43:40,863 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:43:40,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:40,863 INFO L85 PathProgramCache]: Analyzing trace with hash 350262150, now seen corresponding path program 1 times [2024-06-28 03:43:40,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:40,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219399535] [2024-06-28 03:43:40,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:40,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:41,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:41,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:41,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219399535] [2024-06-28 03:43:41,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219399535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:41,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:41,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:43:41,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116514960] [2024-06-28 03:43:41,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:41,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:43:41,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:41,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:43:41,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:43:41,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:43:41,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 392 transitions, 4717 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 03:43:41,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:41,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:43:41,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:42,943 INFO L124 PetriNetUnfolderBase]: 3940/6104 cut-off events. [2024-06-28 03:43:42,944 INFO L125 PetriNetUnfolderBase]: For 427844/427858 co-relation queries the response was YES. [2024-06-28 03:43:43,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47487 conditions, 6104 events. 3940/6104 cut-off events. For 427844/427858 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 35079 event pairs, 951 based on Foata normal form. 18/6121 useless extension candidates. Maximal degree in co-relation 47349. Up to 5832 conditions per place. [2024-06-28 03:43:43,026 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 370 selfloop transitions, 74 changer transitions 0/447 dead transitions. [2024-06-28 03:43:43,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 447 transitions, 6122 flow [2024-06-28 03:43:43,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:43:43,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:43:43,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 184 transitions. [2024-06-28 03:43:43,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-28 03:43:43,028 INFO L175 Difference]: Start difference. First operand has 283 places, 392 transitions, 4717 flow. Second operand 12 states and 184 transitions. [2024-06-28 03:43:43,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 447 transitions, 6122 flow [2024-06-28 03:43:44,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 447 transitions, 6002 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-28 03:43:44,100 INFO L231 Difference]: Finished difference. Result has 293 places, 410 transitions, 5042 flow [2024-06-28 03:43:44,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4605, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5042, PETRI_PLACES=293, PETRI_TRANSITIONS=410} [2024-06-28 03:43:44,101 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 252 predicate places. [2024-06-28 03:43:44,101 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 410 transitions, 5042 flow [2024-06-28 03:43:44,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 03:43:44,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:44,101 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 03:43:44,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 03:43:44,102 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 03:43:44,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:44,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1369502564, now seen corresponding path program 2 times [2024-06-28 03:43:44,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:44,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589290080] [2024-06-28 03:43:44,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:44,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:44,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:44,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:44,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:44,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589290080] [2024-06-28 03:43:44,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589290080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:44,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:44,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:43:44,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701646693] [2024-06-28 03:43:44,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:44,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:43:44,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:44,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:43:44,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:43:44,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:43:44,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 410 transitions, 5042 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:44,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:44,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:43:44,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:46,083 INFO L124 PetriNetUnfolderBase]: 3928/6085 cut-off events. [2024-06-28 03:43:46,083 INFO L125 PetriNetUnfolderBase]: For 434766/434780 co-relation queries the response was YES. [2024-06-28 03:43:46,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48587 conditions, 6085 events. 3928/6085 cut-off events. For 434766/434780 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 34919 event pairs, 1005 based on Foata normal form. 18/6102 useless extension candidates. Maximal degree in co-relation 48445. Up to 5872 conditions per place. [2024-06-28 03:43:46,155 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 372 selfloop transitions, 65 changer transitions 0/440 dead transitions. [2024-06-28 03:43:46,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 440 transitions, 6042 flow [2024-06-28 03:43:46,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:46,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:46,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2024-06-28 03:43:46,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37727272727272726 [2024-06-28 03:43:46,157 INFO L175 Difference]: Start difference. First operand has 293 places, 410 transitions, 5042 flow. Second operand 11 states and 166 transitions. [2024-06-28 03:43:46,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 440 transitions, 6042 flow [2024-06-28 03:43:47,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 440 transitions, 5830 flow, removed 79 selfloop flow, removed 5 redundant places. [2024-06-28 03:43:47,291 INFO L231 Difference]: Finished difference. Result has 299 places, 410 transitions, 4966 flow [2024-06-28 03:43:47,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4830, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4966, PETRI_PLACES=299, PETRI_TRANSITIONS=410} [2024-06-28 03:43:47,292 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 258 predicate places. [2024-06-28 03:43:47,292 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 410 transitions, 4966 flow [2024-06-28 03:43:47,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:47,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:47,292 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 03:43:47,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 03:43:47,293 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:43:47,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:47,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1240587595, now seen corresponding path program 6 times [2024-06-28 03:43:47,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:47,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228887985] [2024-06-28 03:43:47,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:47,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:48,526 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 03:43:48,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:48,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228887985] [2024-06-28 03:43:48,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228887985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:48,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:48,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:48,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205185384] [2024-06-28 03:43:48,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:48,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:48,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:48,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:48,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:48,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:43:48,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 410 transitions, 4966 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:48,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:48,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:43:48,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:50,138 INFO L124 PetriNetUnfolderBase]: 3969/6157 cut-off events. [2024-06-28 03:43:50,138 INFO L125 PetriNetUnfolderBase]: For 459949/459963 co-relation queries the response was YES. [2024-06-28 03:43:50,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49162 conditions, 6157 events. 3969/6157 cut-off events. For 459949/459963 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 35384 event pairs, 1001 based on Foata normal form. 26/6180 useless extension candidates. Maximal degree in co-relation 49020. Up to 5448 conditions per place. [2024-06-28 03:43:50,222 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 379 selfloop transitions, 70 changer transitions 0/452 dead transitions. [2024-06-28 03:43:50,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 452 transitions, 6108 flow [2024-06-28 03:43:50,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:43:50,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:43:50,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 03:43:50,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3925 [2024-06-28 03:43:50,223 INFO L175 Difference]: Start difference. First operand has 299 places, 410 transitions, 4966 flow. Second operand 10 states and 157 transitions. [2024-06-28 03:43:50,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 452 transitions, 6108 flow [2024-06-28 03:43:51,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 452 transitions, 5974 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 03:43:51,512 INFO L231 Difference]: Finished difference. Result has 301 places, 413 transitions, 5096 flow [2024-06-28 03:43:51,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4832, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5096, PETRI_PLACES=301, PETRI_TRANSITIONS=413} [2024-06-28 03:43:51,513 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 260 predicate places. [2024-06-28 03:43:51,513 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 413 transitions, 5096 flow [2024-06-28 03:43:51,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:51,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:51,514 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 03:43:51,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 03:43:51,514 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:43:51,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:51,514 INFO L85 PathProgramCache]: Analyzing trace with hash 2091244623, now seen corresponding path program 7 times [2024-06-28 03:43:51,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:51,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8038524] [2024-06-28 03:43:51,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:51,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:51,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:52,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:52,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:52,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8038524] [2024-06-28 03:43:52,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8038524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:52,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:52,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:52,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736525058] [2024-06-28 03:43:52,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:52,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:52,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:52,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:52,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:53,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:43:53,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 413 transitions, 5096 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:53,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:53,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:43:53,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:54,558 INFO L124 PetriNetUnfolderBase]: 4010/6235 cut-off events. [2024-06-28 03:43:54,558 INFO L125 PetriNetUnfolderBase]: For 477376/477384 co-relation queries the response was YES. [2024-06-28 03:43:54,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50333 conditions, 6235 events. 4010/6235 cut-off events. For 477376/477384 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 36227 event pairs, 1161 based on Foata normal form. 20/6253 useless extension candidates. Maximal degree in co-relation 50189. Up to 5707 conditions per place. [2024-06-28 03:43:54,645 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 380 selfloop transitions, 72 changer transitions 0/455 dead transitions. [2024-06-28 03:43:54,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 455 transitions, 6252 flow [2024-06-28 03:43:54,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:43:54,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:43:54,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 03:43:54,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.395 [2024-06-28 03:43:54,646 INFO L175 Difference]: Start difference. First operand has 301 places, 413 transitions, 5096 flow. Second operand 10 states and 158 transitions. [2024-06-28 03:43:54,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 455 transitions, 6252 flow [2024-06-28 03:43:56,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 455 transitions, 6038 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-28 03:43:56,177 INFO L231 Difference]: Finished difference. Result has 305 places, 416 transitions, 5142 flow [2024-06-28 03:43:56,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4890, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5142, PETRI_PLACES=305, PETRI_TRANSITIONS=416} [2024-06-28 03:43:56,178 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 264 predicate places. [2024-06-28 03:43:56,178 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 416 transitions, 5142 flow [2024-06-28 03:43:56,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:56,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:56,178 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 03:43:56,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 03:43:56,178 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:43:56,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:56,179 INFO L85 PathProgramCache]: Analyzing trace with hash 365921939, now seen corresponding path program 8 times [2024-06-28 03:43:56,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:56,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001321902] [2024-06-28 03:43:56,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:56,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:57,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:57,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:57,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001321902] [2024-06-28 03:43:57,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001321902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:57,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:57,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:57,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799344457] [2024-06-28 03:43:57,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:57,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:57,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:57,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:57,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:57,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:43:57,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 416 transitions, 5142 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:57,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:57,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:43:57,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:59,059 INFO L124 PetriNetUnfolderBase]: 4118/6423 cut-off events. [2024-06-28 03:43:59,059 INFO L125 PetriNetUnfolderBase]: For 469010/469018 co-relation queries the response was YES. [2024-06-28 03:43:59,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50603 conditions, 6423 events. 4118/6423 cut-off events. For 469010/469018 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 37642 event pairs, 1121 based on Foata normal form. 24/6445 useless extension candidates. Maximal degree in co-relation 50457. Up to 5315 conditions per place. [2024-06-28 03:43:59,135 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 333 selfloop transitions, 122 changer transitions 0/458 dead transitions. [2024-06-28 03:43:59,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 458 transitions, 6376 flow [2024-06-28 03:43:59,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:43:59,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:43:59,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 03:43:59,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:43:59,137 INFO L175 Difference]: Start difference. First operand has 305 places, 416 transitions, 5142 flow. Second operand 9 states and 150 transitions. [2024-06-28 03:43:59,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 458 transitions, 6376 flow [2024-06-28 03:44:00,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 458 transitions, 6164 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:00,368 INFO L231 Difference]: Finished difference. Result has 307 places, 422 transitions, 5364 flow [2024-06-28 03:44:00,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4932, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5364, PETRI_PLACES=307, PETRI_TRANSITIONS=422} [2024-06-28 03:44:00,372 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 266 predicate places. [2024-06-28 03:44:00,372 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 422 transitions, 5364 flow [2024-06-28 03:44:00,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:00,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:00,372 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 03:44:00,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 03:44:00,373 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:44:00,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:00,373 INFO L85 PathProgramCache]: Analyzing trace with hash 2094963693, now seen corresponding path program 9 times [2024-06-28 03:44:00,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:00,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877811160] [2024-06-28 03:44:00,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:00,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:01,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:01,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:01,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877811160] [2024-06-28 03:44:01,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877811160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:01,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:01,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:01,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810069231] [2024-06-28 03:44:01,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:01,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:01,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:01,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:01,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:01,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:44:01,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 422 transitions, 5364 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:01,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:01,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:44:01,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:03,194 INFO L124 PetriNetUnfolderBase]: 4159/6493 cut-off events. [2024-06-28 03:44:03,194 INFO L125 PetriNetUnfolderBase]: For 458844/458852 co-relation queries the response was YES. [2024-06-28 03:44:03,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51275 conditions, 6493 events. 4159/6493 cut-off events. For 458844/458852 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 38269 event pairs, 1136 based on Foata normal form. 20/6511 useless extension candidates. Maximal degree in co-relation 51128. Up to 5590 conditions per place. [2024-06-28 03:44:03,283 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 341 selfloop transitions, 118 changer transitions 0/462 dead transitions. [2024-06-28 03:44:03,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 462 transitions, 6516 flow [2024-06-28 03:44:03,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:44:03,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:44:03,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 03:44:03,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:44:03,285 INFO L175 Difference]: Start difference. First operand has 307 places, 422 transitions, 5364 flow. Second operand 10 states and 160 transitions. [2024-06-28 03:44:03,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 462 transitions, 6516 flow [2024-06-28 03:44:04,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 462 transitions, 6264 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:04,713 INFO L231 Difference]: Finished difference. Result has 310 places, 423 transitions, 5430 flow [2024-06-28 03:44:04,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5112, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5430, PETRI_PLACES=310, PETRI_TRANSITIONS=423} [2024-06-28 03:44:04,714 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 269 predicate places. [2024-06-28 03:44:04,714 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 423 transitions, 5430 flow [2024-06-28 03:44:04,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:04,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:04,714 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 03:44:04,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 03:44:04,714 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:44:04,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:04,715 INFO L85 PathProgramCache]: Analyzing trace with hash 2094819543, now seen corresponding path program 10 times [2024-06-28 03:44:04,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:04,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13764305] [2024-06-28 03:44:04,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:04,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:06,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:06,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:06,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13764305] [2024-06-28 03:44:06,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13764305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:06,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:06,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:06,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599452447] [2024-06-28 03:44:06,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:06,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:06,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:06,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:06,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:06,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:44:06,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 423 transitions, 5430 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:06,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:06,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:44:06,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:07,636 INFO L124 PetriNetUnfolderBase]: 4200/6564 cut-off events. [2024-06-28 03:44:07,637 INFO L125 PetriNetUnfolderBase]: For 472321/472329 co-relation queries the response was YES. [2024-06-28 03:44:07,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51858 conditions, 6564 events. 4200/6564 cut-off events. For 472321/472329 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 38837 event pairs, 1141 based on Foata normal form. 20/6582 useless extension candidates. Maximal degree in co-relation 51710. Up to 5651 conditions per place. [2024-06-28 03:44:07,726 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 337 selfloop transitions, 126 changer transitions 0/466 dead transitions. [2024-06-28 03:44:07,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 466 transitions, 6632 flow [2024-06-28 03:44:07,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:44:07,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:44:07,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 03:44:07,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025 [2024-06-28 03:44:07,727 INFO L175 Difference]: Start difference. First operand has 310 places, 423 transitions, 5430 flow. Second operand 10 states and 161 transitions. [2024-06-28 03:44:07,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 466 transitions, 6632 flow [2024-06-28 03:44:09,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 466 transitions, 6328 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:09,144 INFO L231 Difference]: Finished difference. Result has 314 places, 427 transitions, 5542 flow [2024-06-28 03:44:09,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5126, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5542, PETRI_PLACES=314, PETRI_TRANSITIONS=427} [2024-06-28 03:44:09,144 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 273 predicate places. [2024-06-28 03:44:09,144 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 427 transitions, 5542 flow [2024-06-28 03:44:09,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:09,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:09,145 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 03:44:09,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 03:44:09,145 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 03:44:09,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:09,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1433938332, now seen corresponding path program 3 times [2024-06-28 03:44:09,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:09,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996923309] [2024-06-28 03:44:09,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:09,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:09,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:09,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:09,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996923309] [2024-06-28 03:44:09,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996923309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:09,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:09,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:44:09,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632692237] [2024-06-28 03:44:09,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:09,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:44:09,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:09,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:44:09,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:44:09,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:44:09,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 427 transitions, 5542 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:09,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:09,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:44:09,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:11,360 INFO L124 PetriNetUnfolderBase]: 4252/6629 cut-off events. [2024-06-28 03:44:11,360 INFO L125 PetriNetUnfolderBase]: For 483104/483122 co-relation queries the response was YES. [2024-06-28 03:44:11,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52903 conditions, 6629 events. 4252/6629 cut-off events. For 483104/483122 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 39082 event pairs, 1021 based on Foata normal form. 22/6648 useless extension candidates. Maximal degree in co-relation 52753. Up to 6276 conditions per place. [2024-06-28 03:44:11,451 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 370 selfloop transitions, 86 changer transitions 0/459 dead transitions. [2024-06-28 03:44:11,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 459 transitions, 6892 flow [2024-06-28 03:44:11,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:11,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:11,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-28 03:44:11,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3972222222222222 [2024-06-28 03:44:11,452 INFO L175 Difference]: Start difference. First operand has 314 places, 427 transitions, 5542 flow. Second operand 9 states and 143 transitions. [2024-06-28 03:44:11,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 459 transitions, 6892 flow [2024-06-28 03:44:12,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 459 transitions, 6550 flow, removed 50 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:12,938 INFO L231 Difference]: Finished difference. Result has 316 places, 433 transitions, 5560 flow [2024-06-28 03:44:12,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5202, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5560, PETRI_PLACES=316, PETRI_TRANSITIONS=433} [2024-06-28 03:44:12,939 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 275 predicate places. [2024-06-28 03:44:12,939 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 433 transitions, 5560 flow [2024-06-28 03:44:12,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:12,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:12,939 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 03:44:12,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 03:44:12,940 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 03:44:12,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:12,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1427272092, now seen corresponding path program 4 times [2024-06-28 03:44:12,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:12,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125528700] [2024-06-28 03:44:12,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:12,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:13,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:13,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:13,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125528700] [2024-06-28 03:44:13,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125528700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:13,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:13,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:13,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309867907] [2024-06-28 03:44:13,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:13,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:13,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:13,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:13,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:13,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:44:13,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 433 transitions, 5560 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 03:44:13,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:13,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:44:13,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:15,189 INFO L124 PetriNetUnfolderBase]: 4272/6655 cut-off events. [2024-06-28 03:44:15,189 INFO L125 PetriNetUnfolderBase]: For 478976/478994 co-relation queries the response was YES. [2024-06-28 03:44:15,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52728 conditions, 6655 events. 4272/6655 cut-off events. For 478976/478994 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 39277 event pairs, 1116 based on Foata normal form. 22/6674 useless extension candidates. Maximal degree in co-relation 52577. Up to 6420 conditions per place. [2024-06-28 03:44:15,286 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 385 selfloop transitions, 70 changer transitions 0/458 dead transitions. [2024-06-28 03:44:15,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 458 transitions, 6666 flow [2024-06-28 03:44:15,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:15,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:15,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-28 03:44:15,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-28 03:44:15,288 INFO L175 Difference]: Start difference. First operand has 316 places, 433 transitions, 5560 flow. Second operand 9 states and 136 transitions. [2024-06-28 03:44:15,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 458 transitions, 6666 flow [2024-06-28 03:44:16,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 458 transitions, 6453 flow, removed 58 selfloop flow, removed 6 redundant places. [2024-06-28 03:44:16,647 INFO L231 Difference]: Finished difference. Result has 319 places, 438 transitions, 5607 flow [2024-06-28 03:44:16,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5369, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5607, PETRI_PLACES=319, PETRI_TRANSITIONS=438} [2024-06-28 03:44:16,648 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 278 predicate places. [2024-06-28 03:44:16,648 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 438 transitions, 5607 flow [2024-06-28 03:44:16,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 03:44:16,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:16,648 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 03:44:16,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 03:44:16,649 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 03:44:16,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:16,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1318647162, now seen corresponding path program 5 times [2024-06-28 03:44:16,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:16,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619344152] [2024-06-28 03:44:16,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:16,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:17,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:17,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:17,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619344152] [2024-06-28 03:44:17,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619344152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:17,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:17,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:17,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774595136] [2024-06-28 03:44:17,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:17,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:17,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:17,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:17,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:17,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:44:17,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 438 transitions, 5607 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 03:44:17,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:17,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:44:17,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:18,823 INFO L124 PetriNetUnfolderBase]: 4378/6803 cut-off events. [2024-06-28 03:44:18,823 INFO L125 PetriNetUnfolderBase]: For 497955/497965 co-relation queries the response was YES. [2024-06-28 03:44:18,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54252 conditions, 6803 events. 4378/6803 cut-off events. For 497955/497965 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 40125 event pairs, 890 based on Foata normal form. 14/6813 useless extension candidates. Maximal degree in co-relation 54100. Up to 6244 conditions per place. [2024-06-28 03:44:18,917 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 359 selfloop transitions, 115 changer transitions 0/477 dead transitions. [2024-06-28 03:44:18,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 477 transitions, 7279 flow [2024-06-28 03:44:18,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:44:18,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:44:18,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 03:44:18,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-28 03:44:18,920 INFO L175 Difference]: Start difference. First operand has 319 places, 438 transitions, 5607 flow. Second operand 8 states and 135 transitions. [2024-06-28 03:44:18,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 477 transitions, 7279 flow [2024-06-28 03:44:20,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 477 transitions, 7100 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 03:44:20,388 INFO L231 Difference]: Finished difference. Result has 323 places, 451 transitions, 6070 flow [2024-06-28 03:44:20,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5432, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6070, PETRI_PLACES=323, PETRI_TRANSITIONS=451} [2024-06-28 03:44:20,388 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 282 predicate places. [2024-06-28 03:44:20,388 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 451 transitions, 6070 flow [2024-06-28 03:44:20,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 03:44:20,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:20,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:20,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 03:44:20,390 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 03:44:20,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:20,390 INFO L85 PathProgramCache]: Analyzing trace with hash -445235952, now seen corresponding path program 1 times [2024-06-28 03:44:20,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:20,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825595256] [2024-06-28 03:44:20,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:20,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:20,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:21,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:21,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:21,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825595256] [2024-06-28 03:44:21,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825595256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:21,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:21,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:44:21,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953964151] [2024-06-28 03:44:21,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:21,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:44:21,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:21,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:44:21,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:44:21,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:44:21,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 451 transitions, 6070 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:21,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:21,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:44:21,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:22,703 INFO L124 PetriNetUnfolderBase]: 4415/6860 cut-off events. [2024-06-28 03:44:22,704 INFO L125 PetriNetUnfolderBase]: For 503370/503378 co-relation queries the response was YES. [2024-06-28 03:44:22,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55727 conditions, 6860 events. 4415/6860 cut-off events. For 503370/503378 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 40623 event pairs, 1452 based on Foata normal form. 10/6868 useless extension candidates. Maximal degree in co-relation 55573. Up to 6667 conditions per place. [2024-06-28 03:44:22,804 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 414 selfloop transitions, 63 changer transitions 0/480 dead transitions. [2024-06-28 03:44:22,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 480 transitions, 7438 flow [2024-06-28 03:44:22,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:44:22,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:44:22,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 03:44:22,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-28 03:44:22,806 INFO L175 Difference]: Start difference. First operand has 323 places, 451 transitions, 6070 flow. Second operand 8 states and 127 transitions. [2024-06-28 03:44:22,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 480 transitions, 7438 flow [2024-06-28 03:44:24,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 480 transitions, 7258 flow, removed 59 selfloop flow, removed 3 redundant places. [2024-06-28 03:44:24,580 INFO L231 Difference]: Finished difference. Result has 329 places, 460 transitions, 6236 flow [2024-06-28 03:44:24,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5894, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6236, PETRI_PLACES=329, PETRI_TRANSITIONS=460} [2024-06-28 03:44:24,581 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 288 predicate places. [2024-06-28 03:44:24,581 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 460 transitions, 6236 flow [2024-06-28 03:44:24,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:24,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:24,582 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 03:44:24,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 03:44:24,582 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 03:44:24,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:24,583 INFO L85 PathProgramCache]: Analyzing trace with hash -445086222, now seen corresponding path program 2 times [2024-06-28 03:44:24,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:24,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175239493] [2024-06-28 03:44:24,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:24,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:24,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:25,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:25,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:25,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175239493] [2024-06-28 03:44:25,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175239493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:25,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:25,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:44:25,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192349630] [2024-06-28 03:44:25,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:25,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:44:25,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:25,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:44:25,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:44:25,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:44:25,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 460 transitions, 6236 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:25,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:25,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:44:25,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:26,803 INFO L124 PetriNetUnfolderBase]: 4425/6874 cut-off events. [2024-06-28 03:44:26,803 INFO L125 PetriNetUnfolderBase]: For 510897/510905 co-relation queries the response was YES. [2024-06-28 03:44:26,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55954 conditions, 6874 events. 4425/6874 cut-off events. For 510897/510905 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 40748 event pairs, 1456 based on Foata normal form. 10/6882 useless extension candidates. Maximal degree in co-relation 55797. Up to 6730 conditions per place. [2024-06-28 03:44:26,904 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 426 selfloop transitions, 50 changer transitions 0/479 dead transitions. [2024-06-28 03:44:26,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 479 transitions, 7351 flow [2024-06-28 03:44:26,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:44:26,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:44:26,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 122 transitions. [2024-06-28 03:44:26,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-28 03:44:26,905 INFO L175 Difference]: Start difference. First operand has 329 places, 460 transitions, 6236 flow. Second operand 8 states and 122 transitions. [2024-06-28 03:44:26,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 479 transitions, 7351 flow [2024-06-28 03:44:28,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 479 transitions, 7177 flow, removed 58 selfloop flow, removed 5 redundant places. [2024-06-28 03:44:28,831 INFO L231 Difference]: Finished difference. Result has 332 places, 463 transitions, 6261 flow [2024-06-28 03:44:28,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6086, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6261, PETRI_PLACES=332, PETRI_TRANSITIONS=463} [2024-06-28 03:44:28,833 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 291 predicate places. [2024-06-28 03:44:28,833 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 463 transitions, 6261 flow [2024-06-28 03:44:28,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:28,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:28,834 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 03:44:28,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 03:44:28,834 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 03:44:28,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:28,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1318318872, now seen corresponding path program 6 times [2024-06-28 03:44:28,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:28,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80126320] [2024-06-28 03:44:28,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:28,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:29,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:29,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:29,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80126320] [2024-06-28 03:44:29,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80126320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:29,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:29,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:44:29,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057495567] [2024-06-28 03:44:29,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:29,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:44:29,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:29,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:44:29,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:44:29,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:44:29,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 463 transitions, 6261 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:29,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:29,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:44:29,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:31,139 INFO L124 PetriNetUnfolderBase]: 4461/6919 cut-off events. [2024-06-28 03:44:31,139 INFO L125 PetriNetUnfolderBase]: For 522806/522816 co-relation queries the response was YES. [2024-06-28 03:44:31,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56580 conditions, 6919 events. 4461/6919 cut-off events. For 522806/522816 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 40804 event pairs, 885 based on Foata normal form. 14/6929 useless extension candidates. Maximal degree in co-relation 56422. Up to 6341 conditions per place. [2024-06-28 03:44:31,224 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 362 selfloop transitions, 127 changer transitions 0/492 dead transitions. [2024-06-28 03:44:31,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 492 transitions, 7813 flow [2024-06-28 03:44:31,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:44:31,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:44:31,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 03:44:31,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-28 03:44:31,226 INFO L175 Difference]: Start difference. First operand has 332 places, 463 transitions, 6261 flow. Second operand 8 states and 133 transitions. [2024-06-28 03:44:31,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 492 transitions, 7813 flow [2024-06-28 03:44:32,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 492 transitions, 7683 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 03:44:32,647 INFO L231 Difference]: Finished difference. Result has 334 places, 469 transitions, 6549 flow [2024-06-28 03:44:32,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6131, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6549, PETRI_PLACES=334, PETRI_TRANSITIONS=469} [2024-06-28 03:44:32,648 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 293 predicate places. [2024-06-28 03:44:32,648 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 469 transitions, 6549 flow [2024-06-28 03:44:32,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:32,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:32,648 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 03:44:32,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 03:44:32,648 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 03:44:32,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:32,649 INFO L85 PathProgramCache]: Analyzing trace with hash 602515938, now seen corresponding path program 3 times [2024-06-28 03:44:32,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:32,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292438420] [2024-06-28 03:44:32,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:32,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:33,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:33,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:33,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292438420] [2024-06-28 03:44:33,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292438420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:33,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:33,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:44:33,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128486682] [2024-06-28 03:44:33,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:33,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:44:33,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:33,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:44:33,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:44:33,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:44:33,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 469 transitions, 6549 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:33,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:33,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:44:33,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:34,899 INFO L124 PetriNetUnfolderBase]: 4455/6913 cut-off events. [2024-06-28 03:44:34,899 INFO L125 PetriNetUnfolderBase]: For 526415/526423 co-relation queries the response was YES. [2024-06-28 03:44:34,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56886 conditions, 6913 events. 4455/6913 cut-off events. For 526415/526423 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 40918 event pairs, 1477 based on Foata normal form. 10/6921 useless extension candidates. Maximal degree in co-relation 56727. Up to 6806 conditions per place. [2024-06-28 03:44:34,994 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 439 selfloop transitions, 38 changer transitions 0/480 dead transitions. [2024-06-28 03:44:34,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 480 transitions, 7555 flow [2024-06-28 03:44:34,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:44:34,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:44:34,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 105 transitions. [2024-06-28 03:44:34,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 03:44:34,995 INFO L175 Difference]: Start difference. First operand has 334 places, 469 transitions, 6549 flow. Second operand 7 states and 105 transitions. [2024-06-28 03:44:34,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 480 transitions, 7555 flow [2024-06-28 03:44:36,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 480 transitions, 7323 flow, removed 45 selfloop flow, removed 4 redundant places. [2024-06-28 03:44:36,880 INFO L231 Difference]: Finished difference. Result has 337 places, 469 transitions, 6404 flow [2024-06-28 03:44:36,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6317, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6404, PETRI_PLACES=337, PETRI_TRANSITIONS=469} [2024-06-28 03:44:36,881 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 296 predicate places. [2024-06-28 03:44:36,881 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 469 transitions, 6404 flow [2024-06-28 03:44:36,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:36,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:36,881 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 03:44:36,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 03:44:36,881 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 03:44:36,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:36,882 INFO L85 PathProgramCache]: Analyzing trace with hash 447057942, now seen corresponding path program 7 times [2024-06-28 03:44:36,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:36,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939321546] [2024-06-28 03:44:36,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:36,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:37,405 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 03:44:37,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:37,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939321546] [2024-06-28 03:44:37,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939321546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:37,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:37,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:44:37,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679159382] [2024-06-28 03:44:37,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:37,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:44:37,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:37,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:44:37,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:44:37,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:44:37,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 469 transitions, 6404 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:37,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:37,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:44:37,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:39,185 INFO L124 PetriNetUnfolderBase]: 4447/6901 cut-off events. [2024-06-28 03:44:39,185 INFO L125 PetriNetUnfolderBase]: For 532032/532042 co-relation queries the response was YES. [2024-06-28 03:44:39,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56177 conditions, 6901 events. 4447/6901 cut-off events. For 532032/532042 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 40794 event pairs, 995 based on Foata normal form. 14/6911 useless extension candidates. Maximal degree in co-relation 56017. Up to 6569 conditions per place. [2024-06-28 03:44:39,278 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 405 selfloop transitions, 77 changer transitions 0/485 dead transitions. [2024-06-28 03:44:39,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 485 transitions, 7606 flow [2024-06-28 03:44:39,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:44:39,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:44:39,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-28 03:44:39,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4035714285714286 [2024-06-28 03:44:39,279 INFO L175 Difference]: Start difference. First operand has 337 places, 469 transitions, 6404 flow. Second operand 7 states and 113 transitions. [2024-06-28 03:44:39,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 485 transitions, 7606 flow [2024-06-28 03:44:41,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 485 transitions, 7479 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 03:44:41,209 INFO L231 Difference]: Finished difference. Result has 339 places, 469 transitions, 6439 flow [2024-06-28 03:44:41,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6277, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6439, PETRI_PLACES=339, PETRI_TRANSITIONS=469} [2024-06-28 03:44:41,209 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 298 predicate places. [2024-06-28 03:44:41,209 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 469 transitions, 6439 flow [2024-06-28 03:44:41,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:41,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:41,210 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 03:44:41,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 03:44:41,210 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 03:44:41,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:41,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1111657589, now seen corresponding path program 1 times [2024-06-28 03:44:41,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:41,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972893006] [2024-06-28 03:44:41,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:41,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:41,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:41,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:41,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972893006] [2024-06-28 03:44:41,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972893006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:41,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:41,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:41,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165442736] [2024-06-28 03:44:41,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:41,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:41,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:41,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:41,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:41,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:44:41,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 469 transitions, 6439 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 03:44:41,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:41,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:44:41,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:43,594 INFO L124 PetriNetUnfolderBase]: 4440/6893 cut-off events. [2024-06-28 03:44:43,595 INFO L125 PetriNetUnfolderBase]: For 532784/532792 co-relation queries the response was YES. [2024-06-28 03:44:43,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56199 conditions, 6893 events. 4440/6893 cut-off events. For 532784/532792 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 40805 event pairs, 1476 based on Foata normal form. 9/6900 useless extension candidates. Maximal degree in co-relation 56038. Up to 6792 conditions per place. [2024-06-28 03:44:43,690 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 436 selfloop transitions, 41 changer transitions 0/480 dead transitions. [2024-06-28 03:44:43,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 480 transitions, 7499 flow [2024-06-28 03:44:43,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:44:43,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:44:43,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2024-06-28 03:44:43,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-28 03:44:43,693 INFO L175 Difference]: Start difference. First operand has 339 places, 469 transitions, 6439 flow. Second operand 6 states and 93 transitions. [2024-06-28 03:44:43,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 480 transitions, 7499 flow [2024-06-28 03:44:45,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 480 transitions, 7368 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 03:44:45,615 INFO L231 Difference]: Finished difference. Result has 341 places, 471 transitions, 6484 flow [2024-06-28 03:44:45,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6312, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6484, PETRI_PLACES=341, PETRI_TRANSITIONS=471} [2024-06-28 03:44:45,616 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 300 predicate places. [2024-06-28 03:44:45,616 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 471 transitions, 6484 flow [2024-06-28 03:44:45,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 03:44:45,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:45,616 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 03:44:45,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 03:44:45,616 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 03:44:45,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:45,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1111785402, now seen corresponding path program 8 times [2024-06-28 03:44:45,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:45,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870569347] [2024-06-28 03:44:45,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:45,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:46,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:46,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:46,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870569347] [2024-06-28 03:44:46,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870569347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:46,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:46,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:46,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515639838] [2024-06-28 03:44:46,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:46,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:46,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:46,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:46,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:46,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:44:46,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 471 transitions, 6484 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 03:44:46,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:46,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:44:46,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:47,809 INFO L124 PetriNetUnfolderBase]: 4428/6875 cut-off events. [2024-06-28 03:44:47,809 INFO L125 PetriNetUnfolderBase]: For 541402/541412 co-relation queries the response was YES. [2024-06-28 03:44:47,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55760 conditions, 6875 events. 4428/6875 cut-off events. For 541402/541412 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 40587 event pairs, 1005 based on Foata normal form. 14/6885 useless extension candidates. Maximal degree in co-relation 55598. Up to 6652 conditions per place. [2024-06-28 03:44:47,902 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 424 selfloop transitions, 57 changer transitions 0/484 dead transitions. [2024-06-28 03:44:47,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 484 transitions, 7514 flow [2024-06-28 03:44:47,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:44:47,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:44:47,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-06-28 03:44:47,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3892857142857143 [2024-06-28 03:44:47,904 INFO L175 Difference]: Start difference. First operand has 341 places, 471 transitions, 6484 flow. Second operand 7 states and 109 transitions. [2024-06-28 03:44:47,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 484 transitions, 7514 flow [2024-06-28 03:44:49,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 484 transitions, 7338 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-06-28 03:44:49,912 INFO L231 Difference]: Finished difference. Result has 343 places, 471 transitions, 6428 flow [2024-06-28 03:44:49,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6308, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6428, PETRI_PLACES=343, PETRI_TRANSITIONS=471} [2024-06-28 03:44:49,913 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 302 predicate places. [2024-06-28 03:44:49,913 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 471 transitions, 6428 flow [2024-06-28 03:44:49,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 03:44:49,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:49,914 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 03:44:49,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 03:44:49,914 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:44:49,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:49,914 INFO L85 PathProgramCache]: Analyzing trace with hash -831480263, now seen corresponding path program 11 times [2024-06-28 03:44:49,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:49,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245754208] [2024-06-28 03:44:49,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:49,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:51,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:51,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:51,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245754208] [2024-06-28 03:44:51,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245754208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:51,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:51,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:51,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539674053] [2024-06-28 03:44:51,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:51,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:51,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:51,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:51,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:51,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:44:51,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 471 transitions, 6428 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:51,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:51,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:44:51,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:53,164 INFO L124 PetriNetUnfolderBase]: 4469/6951 cut-off events. [2024-06-28 03:44:53,164 INFO L125 PetriNetUnfolderBase]: For 556651/556659 co-relation queries the response was YES. [2024-06-28 03:44:53,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56285 conditions, 6951 events. 4469/6951 cut-off events. For 556651/556659 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 41345 event pairs, 1441 based on Foata normal form. 20/6969 useless extension candidates. Maximal degree in co-relation 56123. Up to 6378 conditions per place. [2024-06-28 03:44:53,269 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 458 selfloop transitions, 56 changer transitions 0/517 dead transitions. [2024-06-28 03:44:53,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 517 transitions, 7802 flow [2024-06-28 03:44:53,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:44:53,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:44:53,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 03:44:53,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175 [2024-06-28 03:44:53,271 INFO L175 Difference]: Start difference. First operand has 343 places, 471 transitions, 6428 flow. Second operand 10 states and 167 transitions. [2024-06-28 03:44:53,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 517 transitions, 7802 flow [2024-06-28 03:44:55,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 517 transitions, 7648 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 03:44:55,245 INFO L231 Difference]: Finished difference. Result has 348 places, 475 transitions, 6525 flow [2024-06-28 03:44:55,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6274, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6525, PETRI_PLACES=348, PETRI_TRANSITIONS=475} [2024-06-28 03:44:55,245 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 307 predicate places. [2024-06-28 03:44:55,246 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 475 transitions, 6525 flow [2024-06-28 03:44:55,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:55,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:55,246 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 03:44:55,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 03:44:55,246 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:44:55,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:55,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1828144147, now seen corresponding path program 12 times [2024-06-28 03:44:55,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:55,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14047601] [2024-06-28 03:44:55,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:55,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:55,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:56,722 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 03:44:56,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:56,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14047601] [2024-06-28 03:44:56,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14047601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:56,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:56,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:56,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556098005] [2024-06-28 03:44:56,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:56,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:56,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:56,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:56,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:56,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:44:56,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 475 transitions, 6525 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:56,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:56,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:44:56,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:58,648 INFO L124 PetriNetUnfolderBase]: 4527/7044 cut-off events. [2024-06-28 03:44:58,648 INFO L125 PetriNetUnfolderBase]: For 577667/577677 co-relation queries the response was YES. [2024-06-28 03:44:58,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57404 conditions, 7044 events. 4527/7044 cut-off events. For 577667/577677 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 41943 event pairs, 926 based on Foata normal form. 22/7062 useless extension candidates. Maximal degree in co-relation 57240. Up to 6050 conditions per place. [2024-06-28 03:44:58,749 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 375 selfloop transitions, 139 changer transitions 0/517 dead transitions. [2024-06-28 03:44:58,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 517 transitions, 7825 flow [2024-06-28 03:44:58,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:44:58,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:44:58,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 03:44:58,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175 [2024-06-28 03:44:58,751 INFO L175 Difference]: Start difference. First operand has 348 places, 475 transitions, 6525 flow. Second operand 10 states and 167 transitions. [2024-06-28 03:44:58,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 517 transitions, 7825 flow [2024-06-28 03:45:01,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 517 transitions, 7619 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-28 03:45:01,233 INFO L231 Difference]: Finished difference. Result has 352 places, 478 transitions, 6692 flow [2024-06-28 03:45:01,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6319, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6692, PETRI_PLACES=352, PETRI_TRANSITIONS=478} [2024-06-28 03:45:01,234 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 311 predicate places. [2024-06-28 03:45:01,234 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 478 transitions, 6692 flow [2024-06-28 03:45:01,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:01,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:01,235 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 03:45:01,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 03:45:01,235 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:45:01,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:01,235 INFO L85 PathProgramCache]: Analyzing trace with hash -214721563, now seen corresponding path program 13 times [2024-06-28 03:45:01,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:01,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947592924] [2024-06-28 03:45:01,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:01,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:02,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:02,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:02,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947592924] [2024-06-28 03:45:02,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947592924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:02,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:02,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:02,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457967107] [2024-06-28 03:45:02,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:02,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:02,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:02,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:02,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:02,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:45:02,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 478 transitions, 6692 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:02,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:02,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:45:02,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:04,759 INFO L124 PetriNetUnfolderBase]: 4568/7115 cut-off events. [2024-06-28 03:45:04,759 INFO L125 PetriNetUnfolderBase]: For 593075/593085 co-relation queries the response was YES. [2024-06-28 03:45:04,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58131 conditions, 7115 events. 4568/7115 cut-off events. For 593075/593085 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 42475 event pairs, 925 based on Foata normal form. 22/7133 useless extension candidates. Maximal degree in co-relation 57965. Up to 6630 conditions per place. [2024-06-28 03:45:04,854 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 436 selfloop transitions, 80 changer transitions 0/519 dead transitions. [2024-06-28 03:45:04,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 519 transitions, 7988 flow [2024-06-28 03:45:04,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:04,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:04,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 03:45:04,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405 [2024-06-28 03:45:04,856 INFO L175 Difference]: Start difference. First operand has 352 places, 478 transitions, 6692 flow. Second operand 10 states and 162 transitions. [2024-06-28 03:45:04,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 519 transitions, 7988 flow [2024-06-28 03:45:07,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 519 transitions, 7655 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-28 03:45:07,121 INFO L231 Difference]: Finished difference. Result has 356 places, 481 transitions, 6637 flow [2024-06-28 03:45:07,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6359, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6637, PETRI_PLACES=356, PETRI_TRANSITIONS=481} [2024-06-28 03:45:07,121 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 315 predicate places. [2024-06-28 03:45:07,122 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 481 transitions, 6637 flow [2024-06-28 03:45:07,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:07,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:07,122 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 03:45:07,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 03:45:07,122 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:45:07,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:07,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1831863217, now seen corresponding path program 14 times [2024-06-28 03:45:07,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:07,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868703271] [2024-06-28 03:45:07,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:07,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:07,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:08,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:08,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:08,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868703271] [2024-06-28 03:45:08,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868703271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:08,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:08,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:08,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833843805] [2024-06-28 03:45:08,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:08,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:08,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:08,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:08,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:08,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:45:08,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 481 transitions, 6637 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:08,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:08,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:45:08,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:10,300 INFO L124 PetriNetUnfolderBase]: 4548/7083 cut-off events. [2024-06-28 03:45:10,301 INFO L125 PetriNetUnfolderBase]: For 576862/576872 co-relation queries the response was YES. [2024-06-28 03:45:10,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56793 conditions, 7083 events. 4548/7083 cut-off events. For 576862/576872 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 42240 event pairs, 922 based on Foata normal form. 22/7101 useless extension candidates. Maximal degree in co-relation 56625. Up to 5841 conditions per place. [2024-06-28 03:45:10,408 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 375 selfloop transitions, 147 changer transitions 0/525 dead transitions. [2024-06-28 03:45:10,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 525 transitions, 7851 flow [2024-06-28 03:45:10,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:10,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:10,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 03:45:10,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 03:45:10,409 INFO L175 Difference]: Start difference. First operand has 356 places, 481 transitions, 6637 flow. Second operand 10 states and 170 transitions. [2024-06-28 03:45:10,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 525 transitions, 7851 flow [2024-06-28 03:45:12,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 525 transitions, 7609 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-28 03:45:12,530 INFO L231 Difference]: Finished difference. Result has 359 places, 482 transitions, 6640 flow [2024-06-28 03:45:12,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6309, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6640, PETRI_PLACES=359, PETRI_TRANSITIONS=482} [2024-06-28 03:45:12,530 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 318 predicate places. [2024-06-28 03:45:12,530 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 482 transitions, 6640 flow [2024-06-28 03:45:12,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:12,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:12,531 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 03:45:12,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 03:45:12,531 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 03:45:12,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:12,531 INFO L85 PathProgramCache]: Analyzing trace with hash -862912536, now seen corresponding path program 9 times [2024-06-28 03:45:12,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:12,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043127993] [2024-06-28 03:45:12,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:12,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:13,170 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 03:45:13,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:13,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043127993] [2024-06-28 03:45:13,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043127993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:13,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:13,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:45:13,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454321126] [2024-06-28 03:45:13,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:13,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:45:13,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:13,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:45:13,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:45:13,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:45:13,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 482 transitions, 6640 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:13,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:13,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:45:13,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:14,913 INFO L124 PetriNetUnfolderBase]: 4600/7155 cut-off events. [2024-06-28 03:45:14,913 INFO L125 PetriNetUnfolderBase]: For 587300/587306 co-relation queries the response was YES. [2024-06-28 03:45:14,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57994 conditions, 7155 events. 4600/7155 cut-off events. For 587300/587306 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 42715 event pairs, 944 based on Foata normal form. 10/7161 useless extension candidates. Maximal degree in co-relation 57824. Up to 6808 conditions per place. [2024-06-28 03:45:15,017 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 437 selfloop transitions, 77 changer transitions 0/517 dead transitions. [2024-06-28 03:45:15,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 517 transitions, 8146 flow [2024-06-28 03:45:15,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:15,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:15,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 03:45:15,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3825 [2024-06-28 03:45:15,018 INFO L175 Difference]: Start difference. First operand has 359 places, 482 transitions, 6640 flow. Second operand 10 states and 153 transitions. [2024-06-28 03:45:15,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 517 transitions, 8146 flow [2024-06-28 03:45:17,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 517 transitions, 7738 flow, removed 43 selfloop flow, removed 8 redundant places. [2024-06-28 03:45:17,270 INFO L231 Difference]: Finished difference. Result has 361 places, 488 transitions, 6570 flow [2024-06-28 03:45:17,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6232, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6570, PETRI_PLACES=361, PETRI_TRANSITIONS=488} [2024-06-28 03:45:17,278 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 320 predicate places. [2024-06-28 03:45:17,278 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 488 transitions, 6570 flow [2024-06-28 03:45:17,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:17,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:17,278 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 03:45:17,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 03:45:17,279 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 03:45:17,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:17,279 INFO L85 PathProgramCache]: Analyzing trace with hash -862733790, now seen corresponding path program 4 times [2024-06-28 03:45:17,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:17,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181125803] [2024-06-28 03:45:17,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:17,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:18,094 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 03:45:18,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:18,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181125803] [2024-06-28 03:45:18,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181125803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:18,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:18,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:45:18,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367813934] [2024-06-28 03:45:18,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:18,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:45:18,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:18,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:45:18,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:45:18,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:45:18,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 488 transitions, 6570 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:18,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:18,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:45:18,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:19,772 INFO L124 PetriNetUnfolderBase]: 4637/7212 cut-off events. [2024-06-28 03:45:19,772 INFO L125 PetriNetUnfolderBase]: For 597867/597875 co-relation queries the response was YES. [2024-06-28 03:45:19,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58168 conditions, 7212 events. 4637/7212 cut-off events. For 597867/597875 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 43222 event pairs, 1528 based on Foata normal form. 10/7220 useless extension candidates. Maximal degree in co-relation 57998. Up to 7084 conditions per place. [2024-06-28 03:45:19,876 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 483 selfloop transitions, 35 changer transitions 0/521 dead transitions. [2024-06-28 03:45:19,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 521 transitions, 8081 flow [2024-06-28 03:45:19,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:45:19,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:45:19,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-28 03:45:19,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-28 03:45:19,877 INFO L175 Difference]: Start difference. First operand has 361 places, 488 transitions, 6570 flow. Second operand 9 states and 136 transitions. [2024-06-28 03:45:19,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 521 transitions, 8081 flow [2024-06-28 03:45:21,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 521 transitions, 7831 flow, removed 58 selfloop flow, removed 6 redundant places. [2024-06-28 03:45:21,997 INFO L231 Difference]: Finished difference. Result has 365 places, 497 transitions, 6617 flow [2024-06-28 03:45:21,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6320, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6617, PETRI_PLACES=365, PETRI_TRANSITIONS=497} [2024-06-28 03:45:21,997 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 324 predicate places. [2024-06-28 03:45:21,997 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 497 transitions, 6617 flow [2024-06-28 03:45:21,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:21,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:21,998 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 03:45:21,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 03:45:21,998 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 03:45:21,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:21,998 INFO L85 PathProgramCache]: Analyzing trace with hash -862584060, now seen corresponding path program 5 times [2024-06-28 03:45:21,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:21,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275964555] [2024-06-28 03:45:21,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:21,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:22,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:22,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:22,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275964555] [2024-06-28 03:45:22,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275964555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:22,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:22,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:45:22,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786377672] [2024-06-28 03:45:22,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:22,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:45:22,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:22,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:45:22,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:45:22,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:45:22,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 497 transitions, 6617 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:22,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:22,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:45:22,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:24,317 INFO L124 PetriNetUnfolderBase]: 4631/7204 cut-off events. [2024-06-28 03:45:24,317 INFO L125 PetriNetUnfolderBase]: For 602745/602753 co-relation queries the response was YES. [2024-06-28 03:45:24,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58002 conditions, 7204 events. 4631/7204 cut-off events. For 602745/602753 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 43183 event pairs, 1528 based on Foata normal form. 10/7212 useless extension candidates. Maximal degree in co-relation 57830. Up to 7094 conditions per place. [2024-06-28 03:45:24,423 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 483 selfloop transitions, 29 changer transitions 0/515 dead transitions. [2024-06-28 03:45:24,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 515 transitions, 7723 flow [2024-06-28 03:45:24,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:45:24,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:45:24,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions. [2024-06-28 03:45:24,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-28 03:45:24,424 INFO L175 Difference]: Start difference. First operand has 365 places, 497 transitions, 6617 flow. Second operand 8 states and 119 transitions. [2024-06-28 03:45:24,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 515 transitions, 7723 flow [2024-06-28 03:45:26,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 515 transitions, 7524 flow, removed 83 selfloop flow, removed 5 redundant places. [2024-06-28 03:45:26,672 INFO L231 Difference]: Finished difference. Result has 368 places, 497 transitions, 6482 flow [2024-06-28 03:45:26,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6418, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6482, PETRI_PLACES=368, PETRI_TRANSITIONS=497} [2024-06-28 03:45:26,673 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 327 predicate places. [2024-06-28 03:45:26,673 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 497 transitions, 6482 flow [2024-06-28 03:45:26,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:26,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:26,673 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 03:45:26,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 03:45:26,674 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 03:45:26,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:26,674 INFO L85 PathProgramCache]: Analyzing trace with hash -491686296, now seen corresponding path program 10 times [2024-06-28 03:45:26,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:26,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529910669] [2024-06-28 03:45:26,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:26,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:27,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:27,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:27,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529910669] [2024-06-28 03:45:27,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529910669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:27,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:27,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:45:27,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272608567] [2024-06-28 03:45:27,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:27,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:45:27,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:27,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:45:27,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:45:27,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:45:27,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 497 transitions, 6482 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:27,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:27,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:45:27,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:28,945 INFO L124 PetriNetUnfolderBase]: 4619/7183 cut-off events. [2024-06-28 03:45:28,945 INFO L125 PetriNetUnfolderBase]: For 605844/605850 co-relation queries the response was YES. [2024-06-28 03:45:29,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57510 conditions, 7183 events. 4619/7183 cut-off events. For 605844/605850 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 42901 event pairs, 942 based on Foata normal form. 10/7189 useless extension candidates. Maximal degree in co-relation 57336. Up to 6844 conditions per place. [2024-06-28 03:45:29,066 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 440 selfloop transitions, 76 changer transitions 0/519 dead transitions. [2024-06-28 03:45:29,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 519 transitions, 7628 flow [2024-06-28 03:45:29,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:45:29,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:45:29,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-28 03:45:29,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:45:29,068 INFO L175 Difference]: Start difference. First operand has 368 places, 497 transitions, 6482 flow. Second operand 8 states and 128 transitions. [2024-06-28 03:45:29,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 519 transitions, 7628 flow [2024-06-28 03:45:31,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 519 transitions, 7520 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 03:45:31,703 INFO L231 Difference]: Finished difference. Result has 370 places, 497 transitions, 6532 flow [2024-06-28 03:45:31,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6374, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6532, PETRI_PLACES=370, PETRI_TRANSITIONS=497} [2024-06-28 03:45:31,704 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 329 predicate places. [2024-06-28 03:45:31,704 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 497 transitions, 6532 flow [2024-06-28 03:45:31,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:31,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:31,704 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 03:45:31,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 03:45:31,705 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 03:45:31,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:31,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1034906994, now seen corresponding path program 6 times [2024-06-28 03:45:31,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:31,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879899965] [2024-06-28 03:45:31,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:31,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:32,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:32,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:32,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879899965] [2024-06-28 03:45:32,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879899965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:32,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:32,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:45:32,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236726100] [2024-06-28 03:45:32,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:32,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:45:32,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:32,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:45:32,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:45:32,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:45:32,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 497 transitions, 6532 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:32,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:32,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:45:32,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:34,326 INFO L124 PetriNetUnfolderBase]: 4650/7232 cut-off events. [2024-06-28 03:45:34,326 INFO L125 PetriNetUnfolderBase]: For 614135/614143 co-relation queries the response was YES. [2024-06-28 03:45:34,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58074 conditions, 7232 events. 4650/7232 cut-off events. For 614135/614143 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 43424 event pairs, 1528 based on Foata normal form. 10/7240 useless extension candidates. Maximal degree in co-relation 57899. Up to 7051 conditions per place. [2024-06-28 03:45:34,440 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 478 selfloop transitions, 45 changer transitions 0/526 dead transitions. [2024-06-28 03:45:34,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 526 transitions, 7796 flow [2024-06-28 03:45:34,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:45:34,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:45:34,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-28 03:45:34,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-28 03:45:34,442 INFO L175 Difference]: Start difference. First operand has 370 places, 497 transitions, 6532 flow. Second operand 8 states and 125 transitions. [2024-06-28 03:45:34,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 526 transitions, 7796 flow [2024-06-28 03:45:36,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 526 transitions, 7644 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 03:45:36,810 INFO L231 Difference]: Finished difference. Result has 371 places, 506 transitions, 6626 flow [2024-06-28 03:45:36,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6380, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6626, PETRI_PLACES=371, PETRI_TRANSITIONS=506} [2024-06-28 03:45:36,810 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 330 predicate places. [2024-06-28 03:45:36,811 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 506 transitions, 6626 flow [2024-06-28 03:45:36,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:36,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:36,811 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 03:45:36,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 03:45:36,811 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 03:45:36,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:36,812 INFO L85 PathProgramCache]: Analyzing trace with hash 127210996, now seen corresponding path program 7 times [2024-06-28 03:45:36,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:36,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214753120] [2024-06-28 03:45:36,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:36,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:37,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:37,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:37,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214753120] [2024-06-28 03:45:37,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214753120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:37,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:37,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:45:37,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25624518] [2024-06-28 03:45:37,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:37,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:45:37,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:37,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:45:37,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:45:37,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:45:37,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 506 transitions, 6626 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:37,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:37,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:45:37,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:39,151 INFO L124 PetriNetUnfolderBase]: 4668/7257 cut-off events. [2024-06-28 03:45:39,151 INFO L125 PetriNetUnfolderBase]: For 631613/631621 co-relation queries the response was YES. [2024-06-28 03:45:39,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58786 conditions, 7257 events. 4668/7257 cut-off events. For 631613/631621 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 43549 event pairs, 1496 based on Foata normal form. 10/7265 useless extension candidates. Maximal degree in co-relation 58610. Up to 6950 conditions per place. [2024-06-28 03:45:39,267 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 437 selfloop transitions, 93 changer transitions 0/533 dead transitions. [2024-06-28 03:45:39,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 533 transitions, 8164 flow [2024-06-28 03:45:39,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:45:39,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:45:39,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 03:45:39,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-28 03:45:39,270 INFO L175 Difference]: Start difference. First operand has 371 places, 506 transitions, 6626 flow. Second operand 8 states and 127 transitions. [2024-06-28 03:45:39,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 533 transitions, 8164 flow [2024-06-28 03:45:41,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 533 transitions, 8004 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-06-28 03:45:41,595 INFO L231 Difference]: Finished difference. Result has 375 places, 512 transitions, 6864 flow [2024-06-28 03:45:41,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6466, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6864, PETRI_PLACES=375, PETRI_TRANSITIONS=512} [2024-06-28 03:45:41,596 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 334 predicate places. [2024-06-28 03:45:41,596 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 512 transitions, 6864 flow [2024-06-28 03:45:41,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:41,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:41,596 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 03:45:41,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 03:45:41,596 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 03:45:41,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:41,597 INFO L85 PathProgramCache]: Analyzing trace with hash -478561950, now seen corresponding path program 8 times [2024-06-28 03:45:41,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:41,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706571842] [2024-06-28 03:45:41,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:41,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:42,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:42,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:42,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706571842] [2024-06-28 03:45:42,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706571842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:42,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:42,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:45:42,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292777269] [2024-06-28 03:45:42,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:42,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:45:42,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:42,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:45:42,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:45:42,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:45:42,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 512 transitions, 6864 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:42,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:42,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:45:42,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:44,070 INFO L124 PetriNetUnfolderBase]: 4694/7293 cut-off events. [2024-06-28 03:45:44,070 INFO L125 PetriNetUnfolderBase]: For 656321/656329 co-relation queries the response was YES. [2024-06-28 03:45:44,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59889 conditions, 7293 events. 4694/7293 cut-off events. For 656321/656329 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 43739 event pairs, 1508 based on Foata normal form. 10/7301 useless extension candidates. Maximal degree in co-relation 59712. Up to 7082 conditions per place. [2024-06-28 03:45:44,193 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 464 selfloop transitions, 69 changer transitions 0/536 dead transitions. [2024-06-28 03:45:44,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 536 transitions, 8408 flow [2024-06-28 03:45:44,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:45:44,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:45:44,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-06-28 03:45:44,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-28 03:45:44,194 INFO L175 Difference]: Start difference. First operand has 375 places, 512 transitions, 6864 flow. Second operand 8 states and 123 transitions. [2024-06-28 03:45:44,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 536 transitions, 8408 flow [2024-06-28 03:45:46,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 536 transitions, 8126 flow, removed 107 selfloop flow, removed 5 redundant places. [2024-06-28 03:45:46,957 INFO L231 Difference]: Finished difference. Result has 378 places, 518 transitions, 6948 flow [2024-06-28 03:45:46,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6650, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6948, PETRI_PLACES=378, PETRI_TRANSITIONS=518} [2024-06-28 03:45:46,958 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 337 predicate places. [2024-06-28 03:45:46,958 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 518 transitions, 6948 flow [2024-06-28 03:45:46,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:46,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:46,958 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 03:45:46,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 03:45:46,959 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 03:45:46,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:46,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1178975898, now seen corresponding path program 11 times [2024-06-28 03:45:46,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:46,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434380896] [2024-06-28 03:45:46,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:46,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:47,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:47,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:47,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434380896] [2024-06-28 03:45:47,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434380896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:47,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:47,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:45:47,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412048189] [2024-06-28 03:45:47,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:47,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:45:47,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:47,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:45:47,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:45:47,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:45:47,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 518 transitions, 6948 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 03:45:47,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:47,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:45:47,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:49,392 INFO L124 PetriNetUnfolderBase]: 4714/7316 cut-off events. [2024-06-28 03:45:49,393 INFO L125 PetriNetUnfolderBase]: For 642744/642750 co-relation queries the response was YES. [2024-06-28 03:45:49,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59390 conditions, 7316 events. 4714/7316 cut-off events. For 642744/642750 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 43709 event pairs, 940 based on Foata normal form. 10/7322 useless extension candidates. Maximal degree in co-relation 59213. Up to 6584 conditions per place. [2024-06-28 03:45:49,520 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 403 selfloop transitions, 143 changer transitions 0/549 dead transitions. [2024-06-28 03:45:49,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 549 transitions, 8740 flow [2024-06-28 03:45:49,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:45:49,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:45:49,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 03:45:49,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-28 03:45:49,521 INFO L175 Difference]: Start difference. First operand has 378 places, 518 transitions, 6948 flow. Second operand 8 states and 131 transitions. [2024-06-28 03:45:49,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 549 transitions, 8740 flow [2024-06-28 03:45:51,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 549 transitions, 8610 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-28 03:45:51,848 INFO L231 Difference]: Finished difference. Result has 382 places, 524 transitions, 7304 flow [2024-06-28 03:45:51,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6818, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7304, PETRI_PLACES=382, PETRI_TRANSITIONS=524} [2024-06-28 03:45:51,849 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 341 predicate places. [2024-06-28 03:45:51,849 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 524 transitions, 7304 flow [2024-06-28 03:45:51,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 03:45:51,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:51,849 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 03:45:51,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 03:45:51,850 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 03:45:51,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:51,850 INFO L85 PathProgramCache]: Analyzing trace with hash -851484510, now seen corresponding path program 9 times [2024-06-28 03:45:51,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:51,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599286869] [2024-06-28 03:45:51,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:51,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:52,592 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 03:45:52,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:52,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599286869] [2024-06-28 03:45:52,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599286869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:52,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:52,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:45:52,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18099275] [2024-06-28 03:45:52,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:52,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:45:52,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:52,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:45:52,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:45:52,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:45:52,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 524 transitions, 7304 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:52,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:52,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:45:52,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:54,377 INFO L124 PetriNetUnfolderBase]: 4708/7313 cut-off events. [2024-06-28 03:45:54,377 INFO L125 PetriNetUnfolderBase]: For 647315/647323 co-relation queries the response was YES. [2024-06-28 03:45:54,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60131 conditions, 7313 events. 4708/7313 cut-off events. For 647315/647323 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 43903 event pairs, 1500 based on Foata normal form. 10/7321 useless extension candidates. Maximal degree in co-relation 59952. Up to 7137 conditions per place. [2024-06-28 03:45:54,509 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 480 selfloop transitions, 58 changer transitions 0/541 dead transitions. [2024-06-28 03:45:54,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 541 transitions, 8472 flow [2024-06-28 03:45:54,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:45:54,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:45:54,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-06-28 03:45:54,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-28 03:45:54,511 INFO L175 Difference]: Start difference. First operand has 382 places, 524 transitions, 7304 flow. Second operand 8 states and 121 transitions. [2024-06-28 03:45:54,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 541 transitions, 8472 flow [2024-06-28 03:45:57,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 541 transitions, 8239 flow, removed 73 selfloop flow, removed 4 redundant places. [2024-06-28 03:45:57,124 INFO L231 Difference]: Finished difference. Result has 386 places, 524 transitions, 7193 flow [2024-06-28 03:45:57,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7071, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7193, PETRI_PLACES=386, PETRI_TRANSITIONS=524} [2024-06-28 03:45:57,125 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 345 predicate places. [2024-06-28 03:45:57,125 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 524 transitions, 7193 flow [2024-06-28 03:45:57,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:57,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:57,125 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 03:45:57,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 03:45:57,125 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 03:45:57,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:57,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1059679860, now seen corresponding path program 10 times [2024-06-28 03:45:57,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:57,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218789465] [2024-06-28 03:45:57,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:57,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:57,809 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 03:45:57,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:57,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218789465] [2024-06-28 03:45:57,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218789465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:57,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:57,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:45:57,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104991184] [2024-06-28 03:45:57,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:57,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:45:57,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:57,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:45:57,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:45:57,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:45:57,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 524 transitions, 7193 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:57,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:57,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:45:57,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:59,530 INFO L124 PetriNetUnfolderBase]: 4718/7324 cut-off events. [2024-06-28 03:45:59,530 INFO L125 PetriNetUnfolderBase]: For 650564/650572 co-relation queries the response was YES. [2024-06-28 03:45:59,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59645 conditions, 7324 events. 4718/7324 cut-off events. For 650564/650572 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 43925 event pairs, 1539 based on Foata normal form. 10/7332 useless extension candidates. Maximal degree in co-relation 59464. Up to 7212 conditions per place. [2024-06-28 03:45:59,644 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 494 selfloop transitions, 43 changer transitions 0/540 dead transitions. [2024-06-28 03:45:59,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 540 transitions, 8413 flow [2024-06-28 03:45:59,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:45:59,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:45:59,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 115 transitions. [2024-06-28 03:45:59,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-28 03:45:59,646 INFO L175 Difference]: Start difference. First operand has 386 places, 524 transitions, 7193 flow. Second operand 8 states and 115 transitions. [2024-06-28 03:45:59,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 540 transitions, 8413 flow [2024-06-28 03:46:02,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 540 transitions, 8267 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 03:46:02,329 INFO L231 Difference]: Finished difference. Result has 387 places, 527 transitions, 7225 flow [2024-06-28 03:46:02,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7047, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7225, PETRI_PLACES=387, PETRI_TRANSITIONS=527} [2024-06-28 03:46:02,330 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 346 predicate places. [2024-06-28 03:46:02,330 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 527 transitions, 7225 flow [2024-06-28 03:46:02,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:02,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:02,330 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 03:46:02,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 03:46:02,331 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 03:46:02,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:02,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1569914392, now seen corresponding path program 12 times [2024-06-28 03:46:02,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:02,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357507165] [2024-06-28 03:46:02,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:02,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:02,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:02,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:02,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357507165] [2024-06-28 03:46:02,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357507165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:02,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:02,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:46:02,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79050033] [2024-06-28 03:46:02,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:02,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:46:02,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:02,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:46:02,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:46:02,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:46:02,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 527 transitions, 7225 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 03:46:02,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:02,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:46:02,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:04,645 INFO L124 PetriNetUnfolderBase]: 4743/7357 cut-off events. [2024-06-28 03:46:04,645 INFO L125 PetriNetUnfolderBase]: For 673105/673111 co-relation queries the response was YES. [2024-06-28 03:46:04,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60084 conditions, 7357 events. 4743/7357 cut-off events. For 673105/673111 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 43984 event pairs, 1068 based on Foata normal form. 10/7363 useless extension candidates. Maximal degree in co-relation 59902. Up to 7107 conditions per place. [2024-06-28 03:46:04,761 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 483 selfloop transitions, 64 changer transitions 0/550 dead transitions. [2024-06-28 03:46:04,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 550 transitions, 8535 flow [2024-06-28 03:46:04,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:46:04,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:46:04,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 122 transitions. [2024-06-28 03:46:04,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-28 03:46:04,762 INFO L175 Difference]: Start difference. First operand has 387 places, 527 transitions, 7225 flow. Second operand 8 states and 122 transitions. [2024-06-28 03:46:04,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 550 transitions, 8535 flow [2024-06-28 03:46:07,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 550 transitions, 8385 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 03:46:07,179 INFO L231 Difference]: Finished difference. Result has 390 places, 534 transitions, 7351 flow [2024-06-28 03:46:07,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7075, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7351, PETRI_PLACES=390, PETRI_TRANSITIONS=534} [2024-06-28 03:46:07,180 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 349 predicate places. [2024-06-28 03:46:07,180 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 534 transitions, 7351 flow [2024-06-28 03:46:07,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 03:46:07,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:07,180 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 03:46:07,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 03:46:07,180 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 03:46:07,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:07,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1392425566, now seen corresponding path program 11 times [2024-06-28 03:46:07,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:07,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642044713] [2024-06-28 03:46:07,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:07,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:08,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:08,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:08,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642044713] [2024-06-28 03:46:08,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642044713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:08,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:08,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:46:08,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178703495] [2024-06-28 03:46:08,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:08,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:46:08,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:08,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:46:08,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:46:08,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:46:08,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 534 transitions, 7351 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:08,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:08,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:46:08,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:09,746 INFO L124 PetriNetUnfolderBase]: 4753/7373 cut-off events. [2024-06-28 03:46:09,746 INFO L125 PetriNetUnfolderBase]: For 682428/682436 co-relation queries the response was YES. [2024-06-28 03:46:09,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61002 conditions, 7373 events. 4753/7373 cut-off events. For 682428/682436 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 44224 event pairs, 1526 based on Foata normal form. 10/7381 useless extension candidates. Maximal degree in co-relation 60818. Up to 7222 conditions per place. [2024-06-28 03:46:09,868 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 494 selfloop transitions, 54 changer transitions 0/551 dead transitions. [2024-06-28 03:46:09,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 551 transitions, 8785 flow [2024-06-28 03:46:09,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:46:09,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:46:09,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 117 transitions. [2024-06-28 03:46:09,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-28 03:46:09,870 INFO L175 Difference]: Start difference. First operand has 390 places, 534 transitions, 7351 flow. Second operand 8 states and 117 transitions. [2024-06-28 03:46:09,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 551 transitions, 8785 flow [2024-06-28 03:46:13,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 551 transitions, 8579 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-06-28 03:46:13,213 INFO L231 Difference]: Finished difference. Result has 394 places, 537 transitions, 7345 flow [2024-06-28 03:46:13,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7145, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7345, PETRI_PLACES=394, PETRI_TRANSITIONS=537} [2024-06-28 03:46:13,213 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 353 predicate places. [2024-06-28 03:46:13,213 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 537 transitions, 7345 flow [2024-06-28 03:46:13,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:13,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:13,214 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 03:46:13,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 03:46:13,214 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 03:46:13,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:13,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1569794422, now seen corresponding path program 13 times [2024-06-28 03:46:13,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:13,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608386243] [2024-06-28 03:46:13,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:13,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:13,780 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 03:46:13,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:13,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608386243] [2024-06-28 03:46:13,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608386243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:13,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:13,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:46:13,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471315527] [2024-06-28 03:46:13,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:13,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:46:13,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:13,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:46:13,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:46:13,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:46:13,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 537 transitions, 7345 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:13,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:13,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:46:13,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:15,585 INFO L124 PetriNetUnfolderBase]: 4809/7449 cut-off events. [2024-06-28 03:46:15,585 INFO L125 PetriNetUnfolderBase]: For 721970/721976 co-relation queries the response was YES. [2024-06-28 03:46:15,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62308 conditions, 7449 events. 4809/7449 cut-off events. For 721970/721976 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 44487 event pairs, 1070 based on Foata normal form. 10/7455 useless extension candidates. Maximal degree in co-relation 62123. Up to 7151 conditions per place. [2024-06-28 03:46:15,706 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 487 selfloop transitions, 75 changer transitions 0/565 dead transitions. [2024-06-28 03:46:15,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 565 transitions, 9040 flow [2024-06-28 03:46:15,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:46:15,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:46:15,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-28 03:46:15,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-28 03:46:15,707 INFO L175 Difference]: Start difference. First operand has 394 places, 537 transitions, 7345 flow. Second operand 9 states and 136 transitions. [2024-06-28 03:46:15,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 565 transitions, 9040 flow [2024-06-28 03:46:18,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 565 transitions, 8737 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-28 03:46:18,201 INFO L231 Difference]: Finished difference. Result has 396 places, 545 transitions, 7478 flow [2024-06-28 03:46:18,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7042, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7478, PETRI_PLACES=396, PETRI_TRANSITIONS=545} [2024-06-28 03:46:18,201 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 355 predicate places. [2024-06-28 03:46:18,201 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 545 transitions, 7478 flow [2024-06-28 03:46:18,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:18,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:18,202 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 03:46:18,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 03:46:18,202 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 03:46:18,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:18,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1392662902, now seen corresponding path program 14 times [2024-06-28 03:46:18,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:18,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353038508] [2024-06-28 03:46:18,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:18,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:18,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:18,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:18,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353038508] [2024-06-28 03:46:18,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353038508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:18,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:18,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:46:18,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227742735] [2024-06-28 03:46:18,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:18,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:46:18,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:18,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:46:18,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:46:18,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:46:18,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 545 transitions, 7478 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:18,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:18,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:46:18,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:20,637 INFO L124 PetriNetUnfolderBase]: 4801/7439 cut-off events. [2024-06-28 03:46:20,637 INFO L125 PetriNetUnfolderBase]: For 721699/721705 co-relation queries the response was YES. [2024-06-28 03:46:20,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61850 conditions, 7439 events. 4801/7439 cut-off events. For 721699/721705 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 44479 event pairs, 1050 based on Foata normal form. 10/7445 useless extension candidates. Maximal degree in co-relation 61665. Up to 6995 conditions per place. [2024-06-28 03:46:20,761 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 461 selfloop transitions, 103 changer transitions 0/567 dead transitions. [2024-06-28 03:46:20,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 567 transitions, 9200 flow [2024-06-28 03:46:20,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:46:20,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:46:20,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-28 03:46:20,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-28 03:46:20,762 INFO L175 Difference]: Start difference. First operand has 396 places, 545 transitions, 7478 flow. Second operand 8 states and 125 transitions. [2024-06-28 03:46:20,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 567 transitions, 9200 flow [2024-06-28 03:46:23,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 567 transitions, 9037 flow, removed 60 selfloop flow, removed 3 redundant places. [2024-06-28 03:46:23,892 INFO L231 Difference]: Finished difference. Result has 402 places, 548 transitions, 7648 flow [2024-06-28 03:46:23,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7315, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7648, PETRI_PLACES=402, PETRI_TRANSITIONS=548} [2024-06-28 03:46:23,892 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 361 predicate places. [2024-06-28 03:46:23,893 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 548 transitions, 7648 flow [2024-06-28 03:46:23,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:23,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:23,893 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 03:46:23,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 03:46:23,893 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 03:46:23,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:23,894 INFO L85 PathProgramCache]: Analyzing trace with hash 382308951, now seen corresponding path program 2 times [2024-06-28 03:46:23,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:23,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297153550] [2024-06-28 03:46:23,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:23,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:24,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:24,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:24,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297153550] [2024-06-28 03:46:24,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297153550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:24,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:24,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:46:24,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625388737] [2024-06-28 03:46:24,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:24,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:46:24,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:24,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:46:24,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:46:24,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:46:24,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 548 transitions, 7648 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 03:46:24,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:24,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:46:24,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:26,505 INFO L124 PetriNetUnfolderBase]: 4794/7431 cut-off events. [2024-06-28 03:46:26,506 INFO L125 PetriNetUnfolderBase]: For 717879/717887 co-relation queries the response was YES. [2024-06-28 03:46:26,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61865 conditions, 7431 events. 4794/7431 cut-off events. For 717879/717887 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 44576 event pairs, 1536 based on Foata normal form. 9/7438 useless extension candidates. Maximal degree in co-relation 61676. Up to 7337 conditions per place. [2024-06-28 03:46:26,630 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 518 selfloop transitions, 39 changer transitions 0/560 dead transitions. [2024-06-28 03:46:26,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 560 transitions, 8868 flow [2024-06-28 03:46:26,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:46:26,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:46:26,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-28 03:46:26,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 03:46:26,632 INFO L175 Difference]: Start difference. First operand has 402 places, 548 transitions, 7648 flow. Second operand 8 states and 112 transitions. [2024-06-28 03:46:26,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 560 transitions, 8868 flow [2024-06-28 03:46:29,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 560 transitions, 8245 flow, removed 62 selfloop flow, removed 9 redundant places. [2024-06-28 03:46:29,858 INFO L231 Difference]: Finished difference. Result has 401 places, 550 transitions, 7181 flow [2024-06-28 03:46:29,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7033, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7181, PETRI_PLACES=401, PETRI_TRANSITIONS=550} [2024-06-28 03:46:29,859 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 360 predicate places. [2024-06-28 03:46:29,859 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 550 transitions, 7181 flow [2024-06-28 03:46:29,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 03:46:29,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:29,860 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 03:46:29,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 03:46:29,860 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 03:46:29,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:29,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1569794236, now seen corresponding path program 12 times [2024-06-28 03:46:29,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:29,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263569259] [2024-06-28 03:46:29,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:29,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:30,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:30,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:30,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263569259] [2024-06-28 03:46:30,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263569259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:30,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:30,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:46:30,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961930155] [2024-06-28 03:46:30,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:30,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:46:30,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:30,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:46:30,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:46:30,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:46:30,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 550 transitions, 7181 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:30,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:30,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:46:30,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:32,458 INFO L124 PetriNetUnfolderBase]: 4788/7423 cut-off events. [2024-06-28 03:46:32,458 INFO L125 PetriNetUnfolderBase]: For 721597/721605 co-relation queries the response was YES. [2024-06-28 03:46:32,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60176 conditions, 7423 events. 4788/7423 cut-off events. For 721597/721605 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 44538 event pairs, 1539 based on Foata normal form. 10/7431 useless extension candidates. Maximal degree in co-relation 59989. Up to 7337 conditions per place. [2024-06-28 03:46:32,558 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 527 selfloop transitions, 32 changer transitions 0/562 dead transitions. [2024-06-28 03:46:32,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 562 transitions, 8357 flow [2024-06-28 03:46:32,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:46:32,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:46:32,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-06-28 03:46:32,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-28 03:46:32,559 INFO L175 Difference]: Start difference. First operand has 401 places, 550 transitions, 7181 flow. Second operand 8 states and 113 transitions. [2024-06-28 03:46:32,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 562 transitions, 8357 flow [2024-06-28 03:46:35,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 562 transitions, 8181 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-06-28 03:46:35,957 INFO L231 Difference]: Finished difference. Result has 402 places, 550 transitions, 7075 flow [2024-06-28 03:46:35,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7005, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=518, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7075, PETRI_PLACES=402, PETRI_TRANSITIONS=550} [2024-06-28 03:46:35,957 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 361 predicate places. [2024-06-28 03:46:35,957 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 550 transitions, 7075 flow [2024-06-28 03:46:35,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:35,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:35,958 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 03:46:35,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 03:46:35,958 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 03:46:35,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:35,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1385067189, now seen corresponding path program 3 times [2024-06-28 03:46:35,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:35,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547604904] [2024-06-28 03:46:35,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:35,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:36,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:36,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:36,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547604904] [2024-06-28 03:46:36,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547604904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:36,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:36,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:46:36,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729230947] [2024-06-28 03:46:36,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:36,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:46:36,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:36,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:46:36,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:46:36,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:46:36,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 550 transitions, 7075 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 03:46:36,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:36,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:46:36,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:38,533 INFO L124 PetriNetUnfolderBase]: 4781/7413 cut-off events. [2024-06-28 03:46:38,533 INFO L125 PetriNetUnfolderBase]: For 712514/712522 co-relation queries the response was YES. [2024-06-28 03:46:38,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59879 conditions, 7413 events. 4781/7413 cut-off events. For 712514/712522 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 44466 event pairs, 1525 based on Foata normal form. 9/7420 useless extension candidates. Maximal degree in co-relation 59692. Up to 7284 conditions per place. [2024-06-28 03:46:38,642 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 502 selfloop transitions, 56 changer transitions 0/561 dead transitions. [2024-06-28 03:46:38,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 561 transitions, 8247 flow [2024-06-28 03:46:38,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:46:38,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:46:38,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2024-06-28 03:46:38,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-28 03:46:38,644 INFO L175 Difference]: Start difference. First operand has 402 places, 550 transitions, 7075 flow. Second operand 7 states and 104 transitions. [2024-06-28 03:46:38,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 561 transitions, 8247 flow [2024-06-28 03:46:41,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 561 transitions, 8041 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-28 03:46:41,886 INFO L231 Difference]: Finished difference. Result has 401 places, 550 transitions, 6991 flow [2024-06-28 03:46:41,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6869, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6991, PETRI_PLACES=401, PETRI_TRANSITIONS=550} [2024-06-28 03:46:41,887 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 360 predicate places. [2024-06-28 03:46:41,887 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 550 transitions, 6991 flow [2024-06-28 03:46:41,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 03:46:41,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:41,888 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 03:46:41,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 03:46:41,888 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 03:46:41,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:41,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1126688854, now seen corresponding path program 1 times [2024-06-28 03:46:41,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:41,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418719894] [2024-06-28 03:46:41,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:41,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:42,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:42,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:42,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418719894] [2024-06-28 03:46:42,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418719894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:42,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:42,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:46:42,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999116212] [2024-06-28 03:46:42,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:42,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:46:42,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:42,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:46:42,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:46:42,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:46:42,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 550 transitions, 6991 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:42,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:42,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:46:42,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:44,479 INFO L124 PetriNetUnfolderBase]: 4809/7455 cut-off events. [2024-06-28 03:46:44,480 INFO L125 PetriNetUnfolderBase]: For 756415/756421 co-relation queries the response was YES. [2024-06-28 03:46:44,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60170 conditions, 7455 events. 4809/7455 cut-off events. For 756415/756421 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 44632 event pairs, 1050 based on Foata normal form. 14/7465 useless extension candidates. Maximal degree in co-relation 59983. Up to 7011 conditions per place. [2024-06-28 03:46:44,594 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 507 selfloop transitions, 65 changer transitions 0/575 dead transitions. [2024-06-28 03:46:44,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 575 transitions, 8531 flow [2024-06-28 03:46:44,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:46:44,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:46:44,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-28 03:46:44,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-28 03:46:44,595 INFO L175 Difference]: Start difference. First operand has 401 places, 550 transitions, 6991 flow. Second operand 8 states and 125 transitions. [2024-06-28 03:46:44,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 575 transitions, 8531 flow [2024-06-28 03:46:47,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 575 transitions, 8411 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 03:46:47,777 INFO L231 Difference]: Finished difference. Result has 402 places, 551 transitions, 7031 flow [2024-06-28 03:46:47,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6873, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7031, PETRI_PLACES=402, PETRI_TRANSITIONS=551} [2024-06-28 03:46:47,777 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 361 predicate places. [2024-06-28 03:46:47,778 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 551 transitions, 7031 flow [2024-06-28 03:46:47,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:47,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:47,778 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 03:46:47,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 03:46:47,778 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 03:46:47,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:47,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1569530674, now seen corresponding path program 2 times [2024-06-28 03:46:47,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:47,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863422776] [2024-06-28 03:46:47,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:47,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:48,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:48,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:48,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863422776] [2024-06-28 03:46:48,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863422776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:48,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:48,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:46:48,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297458348] [2024-06-28 03:46:48,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:48,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:46:48,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:48,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:46:48,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:46:48,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:46:48,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 551 transitions, 7031 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:48,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:48,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:46:48,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:50,385 INFO L124 PetriNetUnfolderBase]: 4827/7485 cut-off events. [2024-06-28 03:46:50,386 INFO L125 PetriNetUnfolderBase]: For 758543/758549 co-relation queries the response was YES. [2024-06-28 03:46:50,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60158 conditions, 7485 events. 4827/7485 cut-off events. For 758543/758549 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 44907 event pairs, 1070 based on Foata normal form. 18/7499 useless extension candidates. Maximal degree in co-relation 59971. Up to 7197 conditions per place. [2024-06-28 03:46:50,499 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 508 selfloop transitions, 61 changer transitions 0/572 dead transitions. [2024-06-28 03:46:50,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 572 transitions, 8359 flow [2024-06-28 03:46:50,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:46:50,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:46:50,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-06-28 03:46:50,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-28 03:46:50,501 INFO L175 Difference]: Start difference. First operand has 402 places, 551 transitions, 7031 flow. Second operand 8 states and 123 transitions. [2024-06-28 03:46:50,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 572 transitions, 8359 flow [2024-06-28 03:46:54,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 572 transitions, 8231 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 03:46:54,357 INFO L231 Difference]: Finished difference. Result has 405 places, 552 transitions, 7059 flow [2024-06-28 03:46:54,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6904, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7059, PETRI_PLACES=405, PETRI_TRANSITIONS=552} [2024-06-28 03:46:54,358 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 364 predicate places. [2024-06-28 03:46:54,358 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 552 transitions, 7059 flow [2024-06-28 03:46:54,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:54,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:54,358 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 03:46:54,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 03:46:54,359 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 03:46:54,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:54,359 INFO L85 PathProgramCache]: Analyzing trace with hash 369806186, now seen corresponding path program 3 times [2024-06-28 03:46:54,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:54,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4105050] [2024-06-28 03:46:54,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:54,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:54,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:55,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:55,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:55,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4105050] [2024-06-28 03:46:55,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4105050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:55,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:55,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:46:55,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429400813] [2024-06-28 03:46:55,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:55,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:46:55,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:55,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:46:55,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:46:55,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:46:55,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 552 transitions, 7059 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:55,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:55,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:46:55,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:56,909 INFO L124 PetriNetUnfolderBase]: 4809/7459 cut-off events. [2024-06-28 03:46:56,909 INFO L125 PetriNetUnfolderBase]: For 719686/719692 co-relation queries the response was YES. [2024-06-28 03:46:56,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59243 conditions, 7459 events. 4809/7459 cut-off events. For 719686/719692 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 44681 event pairs, 1050 based on Foata normal form. 14/7469 useless extension candidates. Maximal degree in co-relation 59055. Up to 7133 conditions per place. [2024-06-28 03:46:57,022 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 511 selfloop transitions, 62 changer transitions 0/576 dead transitions. [2024-06-28 03:46:57,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 576 transitions, 8409 flow [2024-06-28 03:46:57,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:46:57,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:46:57,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-28 03:46:57,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-28 03:46:57,023 INFO L175 Difference]: Start difference. First operand has 405 places, 552 transitions, 7059 flow. Second operand 8 states and 126 transitions. [2024-06-28 03:46:57,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 576 transitions, 8409 flow [2024-06-28 03:47:00,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 576 transitions, 8275 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 03:47:00,837 INFO L231 Difference]: Finished difference. Result has 407 places, 552 transitions, 7053 flow [2024-06-28 03:47:00,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6925, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7053, PETRI_PLACES=407, PETRI_TRANSITIONS=552} [2024-06-28 03:47:00,838 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 366 predicate places. [2024-06-28 03:47:00,838 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 552 transitions, 7053 flow [2024-06-28 03:47:00,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:00,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:00,839 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 03:47:00,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 03:47:00,839 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 03:47:00,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:00,839 INFO L85 PathProgramCache]: Analyzing trace with hash -626252832, now seen corresponding path program 1 times [2024-06-28 03:47:00,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:00,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285459124] [2024-06-28 03:47:00,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:00,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:02,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:02,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:02,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285459124] [2024-06-28 03:47:02,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285459124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:02,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:02,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:47:02,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756580305] [2024-06-28 03:47:02,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:02,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:47:02,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:02,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:47:02,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:47:02,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:47:02,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 552 transitions, 7053 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:02,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:02,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:47:02,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:04,020 INFO L124 PetriNetUnfolderBase]: 4872/7552 cut-off events. [2024-06-28 03:47:04,020 INFO L125 PetriNetUnfolderBase]: For 733965/733973 co-relation queries the response was YES. [2024-06-28 03:47:04,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60446 conditions, 7552 events. 4872/7552 cut-off events. For 733965/733973 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 45481 event pairs, 1549 based on Foata normal form. 12/7562 useless extension candidates. Maximal degree in co-relation 60257. Up to 7304 conditions per place. [2024-06-28 03:47:04,141 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 527 selfloop transitions, 61 changer transitions 0/591 dead transitions. [2024-06-28 03:47:04,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 591 transitions, 8783 flow [2024-06-28 03:47:04,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:47:04,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:47:04,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 03:47:04,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-28 03:47:04,142 INFO L175 Difference]: Start difference. First operand has 407 places, 552 transitions, 7053 flow. Second operand 10 states and 155 transitions. [2024-06-28 03:47:04,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 591 transitions, 8783 flow [2024-06-28 03:47:08,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 591 transitions, 8595 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 03:47:08,263 INFO L231 Difference]: Finished difference. Result has 410 places, 563 transitions, 7249 flow [2024-06-28 03:47:08,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6865, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7249, PETRI_PLACES=410, PETRI_TRANSITIONS=563} [2024-06-28 03:47:08,264 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 369 predicate places. [2024-06-28 03:47:08,264 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 563 transitions, 7249 flow [2024-06-28 03:47:08,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:08,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:08,264 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 03:47:08,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 03:47:08,265 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 03:47:08,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:08,265 INFO L85 PathProgramCache]: Analyzing trace with hash -626162622, now seen corresponding path program 2 times [2024-06-28 03:47:08,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:08,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003760101] [2024-06-28 03:47:08,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:08,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:09,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:09,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:09,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003760101] [2024-06-28 03:47:09,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003760101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:09,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:09,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:47:09,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916942157] [2024-06-28 03:47:09,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:09,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:47:09,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:09,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:47:09,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:47:09,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:47:09,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 563 transitions, 7249 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:09,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:09,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:47:09,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:11,223 INFO L124 PetriNetUnfolderBase]: 4860/7536 cut-off events. [2024-06-28 03:47:11,224 INFO L125 PetriNetUnfolderBase]: For 730987/730995 co-relation queries the response was YES. [2024-06-28 03:47:11,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60357 conditions, 7536 events. 4860/7536 cut-off events. For 730987/730995 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 45300 event pairs, 1549 based on Foata normal form. 12/7546 useless extension candidates. Maximal degree in co-relation 60167. Up to 7329 conditions per place. [2024-06-28 03:47:11,330 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 529 selfloop transitions, 54 changer transitions 0/586 dead transitions. [2024-06-28 03:47:11,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 586 transitions, 8544 flow [2024-06-28 03:47:11,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:47:11,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:47:11,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-06-28 03:47:11,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38055555555555554 [2024-06-28 03:47:11,332 INFO L175 Difference]: Start difference. First operand has 410 places, 563 transitions, 7249 flow. Second operand 9 states and 137 transitions. [2024-06-28 03:47:11,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 586 transitions, 8544 flow [2024-06-28 03:47:14,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 586 transitions, 8271 flow, removed 104 selfloop flow, removed 6 redundant places. [2024-06-28 03:47:14,573 INFO L231 Difference]: Finished difference. Result has 413 places, 564 transitions, 7122 flow [2024-06-28 03:47:14,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6998, 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=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7122, PETRI_PLACES=413, PETRI_TRANSITIONS=564} [2024-06-28 03:47:14,574 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 372 predicate places. [2024-06-28 03:47:14,574 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 564 transitions, 7122 flow [2024-06-28 03:47:14,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:14,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:14,575 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 03:47:14,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 03:47:14,575 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 03:47:14,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:14,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1035337584, now seen corresponding path program 1 times [2024-06-28 03:47:14,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:14,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716132725] [2024-06-28 03:47:14,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:14,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:15,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:15,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:15,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716132725] [2024-06-28 03:47:15,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716132725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:15,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:15,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:47:15,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499507546] [2024-06-28 03:47:15,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:15,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:47:15,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:15,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:47:15,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:47:15,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:47:15,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 564 transitions, 7122 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:15,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:15,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:47:15,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:17,378 INFO L124 PetriNetUnfolderBase]: 4868/7557 cut-off events. [2024-06-28 03:47:17,379 INFO L125 PetriNetUnfolderBase]: For 736229/736229 co-relation queries the response was YES. [2024-06-28 03:47:17,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60335 conditions, 7557 events. 4868/7557 cut-off events. For 736229/736229 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 45645 event pairs, 2394 based on Foata normal form. 2/7558 useless extension candidates. Maximal degree in co-relation 60143. Up to 7448 conditions per place. [2024-06-28 03:47:17,496 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 553 selfloop transitions, 30 changer transitions 0/586 dead transitions. [2024-06-28 03:47:17,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 586 transitions, 8444 flow [2024-06-28 03:47:17,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:47:17,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:47:17,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-06-28 03:47:17,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-28 03:47:17,497 INFO L175 Difference]: Start difference. First operand has 413 places, 564 transitions, 7122 flow. Second operand 8 states and 121 transitions. [2024-06-28 03:47:17,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 586 transitions, 8444 flow [2024-06-28 03:47:21,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 586 transitions, 8337 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 03:47:21,804 INFO L231 Difference]: Finished difference. Result has 414 places, 566 transitions, 7138 flow [2024-06-28 03:47:21,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7015, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7138, PETRI_PLACES=414, PETRI_TRANSITIONS=566} [2024-06-28 03:47:21,805 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 373 predicate places. [2024-06-28 03:47:21,805 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 566 transitions, 7138 flow [2024-06-28 03:47:21,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:21,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:21,805 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 03:47:21,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 03:47:21,805 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 03:47:21,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:21,806 INFO L85 PathProgramCache]: Analyzing trace with hash -622443552, now seen corresponding path program 3 times [2024-06-28 03:47:21,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:21,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577568880] [2024-06-28 03:47:21,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:21,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:23,113 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 03:47:23,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:23,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577568880] [2024-06-28 03:47:23,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577568880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:23,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:23,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:47:23,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833916989] [2024-06-28 03:47:23,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:23,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:47:23,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:23,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:47:23,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:47:23,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:47:23,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 566 transitions, 7138 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:23,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:23,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:47:23,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:25,005 INFO L124 PetriNetUnfolderBase]: 4878/7569 cut-off events. [2024-06-28 03:47:25,005 INFO L125 PetriNetUnfolderBase]: For 750902/750902 co-relation queries the response was YES. [2024-06-28 03:47:25,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60645 conditions, 7569 events. 4878/7569 cut-off events. For 750902/750902 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 45762 event pairs, 2392 based on Foata normal form. 2/7570 useless extension candidates. Maximal degree in co-relation 60452. Up to 7421 conditions per place. [2024-06-28 03:47:25,132 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 545 selfloop transitions, 43 changer transitions 0/591 dead transitions. [2024-06-28 03:47:25,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 591 transitions, 8520 flow [2024-06-28 03:47:25,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:47:25,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:47:25,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-28 03:47:25,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-28 03:47:25,133 INFO L175 Difference]: Start difference. First operand has 414 places, 566 transitions, 7138 flow. Second operand 9 states and 136 transitions. [2024-06-28 03:47:25,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 591 transitions, 8520 flow [2024-06-28 03:47:29,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 591 transitions, 8413 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 03:47:29,837 INFO L231 Difference]: Finished difference. Result has 417 places, 569 transitions, 7205 flow [2024-06-28 03:47:29,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7031, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7205, PETRI_PLACES=417, PETRI_TRANSITIONS=569} [2024-06-28 03:47:29,837 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 376 predicate places. [2024-06-28 03:47:29,837 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 569 transitions, 7205 flow [2024-06-28 03:47:29,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:29,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:29,838 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 03:47:29,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 03:47:29,838 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 03:47:29,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:29,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1179429924, now seen corresponding path program 2 times [2024-06-28 03:47:29,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:29,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191137404] [2024-06-28 03:47:29,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:29,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:30,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:30,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:30,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191137404] [2024-06-28 03:47:30,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191137404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:30,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:30,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:47:30,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148782170] [2024-06-28 03:47:30,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:30,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:47:30,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:30,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:47:30,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:47:31,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:47:31,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 569 transitions, 7205 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:31,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:31,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:47:31,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:32,767 INFO L124 PetriNetUnfolderBase]: 4886/7581 cut-off events. [2024-06-28 03:47:32,767 INFO L125 PetriNetUnfolderBase]: For 765363/765363 co-relation queries the response was YES. [2024-06-28 03:47:32,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61347 conditions, 7581 events. 4886/7581 cut-off events. For 765363/765363 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 45798 event pairs, 2402 based on Foata normal form. 2/7582 useless extension candidates. Maximal degree in co-relation 61153. Up to 7497 conditions per place. [2024-06-28 03:47:32,889 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 563 selfloop transitions, 22 changer transitions 0/588 dead transitions. [2024-06-28 03:47:32,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 588 transitions, 8523 flow [2024-06-28 03:47:32,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:47:32,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:47:32,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 117 transitions. [2024-06-28 03:47:32,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-28 03:47:32,891 INFO L175 Difference]: Start difference. First operand has 417 places, 569 transitions, 7205 flow. Second operand 8 states and 117 transitions. [2024-06-28 03:47:32,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 588 transitions, 8523 flow [2024-06-28 03:47:36,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 588 transitions, 8371 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-28 03:47:36,047 INFO L231 Difference]: Finished difference. Result has 418 places, 571 transitions, 7166 flow [2024-06-28 03:47:36,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7053, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7166, PETRI_PLACES=418, PETRI_TRANSITIONS=571} [2024-06-28 03:47:36,048 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 377 predicate places. [2024-06-28 03:47:36,048 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 571 transitions, 7166 flow [2024-06-28 03:47:36,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:36,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:36,048 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 03:47:36,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 03:47:36,048 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 03:47:36,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:36,049 INFO L85 PathProgramCache]: Analyzing trace with hash -478553022, now seen corresponding path program 4 times [2024-06-28 03:47:36,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:36,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751479861] [2024-06-28 03:47:36,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:36,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:36,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:36,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:36,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751479861] [2024-06-28 03:47:36,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751479861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:36,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:36,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:47:36,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067624894] [2024-06-28 03:47:36,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:36,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:47:36,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:36,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:47:36,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:47:36,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:47:36,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 571 transitions, 7166 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:36,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:36,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:47:36,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:38,678 INFO L124 PetriNetUnfolderBase]: 4896/7595 cut-off events. [2024-06-28 03:47:38,678 INFO L125 PetriNetUnfolderBase]: For 779289/779289 co-relation queries the response was YES. [2024-06-28 03:47:38,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61605 conditions, 7595 events. 4896/7595 cut-off events. For 779289/779289 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 45889 event pairs, 2403 based on Foata normal form. 2/7596 useless extension candidates. Maximal degree in co-relation 61410. Up to 7501 conditions per place. [2024-06-28 03:47:38,805 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 563 selfloop transitions, 25 changer transitions 0/591 dead transitions. [2024-06-28 03:47:38,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 591 transitions, 8526 flow [2024-06-28 03:47:38,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:47:38,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:47:38,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions. [2024-06-28 03:47:38,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-28 03:47:38,807 INFO L175 Difference]: Start difference. First operand has 418 places, 571 transitions, 7166 flow. Second operand 8 states and 119 transitions. [2024-06-28 03:47:38,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 591 transitions, 8526 flow [2024-06-28 03:47:42,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 591 transitions, 8429 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 03:47:42,030 INFO L231 Difference]: Finished difference. Result has 420 places, 574 transitions, 7217 flow [2024-06-28 03:47:42,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7069, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7217, PETRI_PLACES=420, PETRI_TRANSITIONS=574} [2024-06-28 03:47:42,031 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 379 predicate places. [2024-06-28 03:47:42,031 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 574 transitions, 7217 flow [2024-06-28 03:47:42,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:42,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:42,031 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 03:47:42,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 03:47:42,031 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 03:47:42,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:42,032 INFO L85 PathProgramCache]: Analyzing trace with hash -478337820, now seen corresponding path program 3 times [2024-06-28 03:47:42,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:42,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155917693] [2024-06-28 03:47:42,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:42,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:43,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:43,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:43,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155917693] [2024-06-28 03:47:43,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155917693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:43,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:43,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:47:43,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911421606] [2024-06-28 03:47:43,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:43,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:47:43,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:43,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:47:43,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:47:43,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:47:43,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 574 transitions, 7217 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:43,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:43,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:47:43,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:44,915 INFO L124 PetriNetUnfolderBase]: 4904/7607 cut-off events. [2024-06-28 03:47:44,915 INFO L125 PetriNetUnfolderBase]: For 795805/795805 co-relation queries the response was YES. [2024-06-28 03:47:45,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62280 conditions, 7607 events. 4904/7607 cut-off events. For 795805/795805 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 46037 event pairs, 2400 based on Foata normal form. 2/7608 useless extension candidates. Maximal degree in co-relation 62084. Up to 7523 conditions per place. [2024-06-28 03:47:45,037 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 569 selfloop transitions, 21 changer transitions 0/593 dead transitions. [2024-06-28 03:47:45,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 593 transitions, 8539 flow [2024-06-28 03:47:45,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:47:45,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:47:45,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 116 transitions. [2024-06-28 03:47:45,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-28 03:47:45,038 INFO L175 Difference]: Start difference. First operand has 420 places, 574 transitions, 7217 flow. Second operand 8 states and 116 transitions. [2024-06-28 03:47:45,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 593 transitions, 8539 flow [2024-06-28 03:47:48,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 593 transitions, 8415 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 03:47:48,520 INFO L231 Difference]: Finished difference. Result has 421 places, 576 transitions, 7210 flow [2024-06-28 03:47:48,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7093, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7210, PETRI_PLACES=421, PETRI_TRANSITIONS=576} [2024-06-28 03:47:48,521 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 380 predicate places. [2024-06-28 03:47:48,521 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 576 transitions, 7210 flow [2024-06-28 03:47:48,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:48,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:48,521 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 03:47:48,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 03:47:48,521 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 03:47:48,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:48,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1063106930, now seen corresponding path program 4 times [2024-06-28 03:47:48,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:48,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702757470] [2024-06-28 03:47:48,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:48,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:49,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:49,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:49,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702757470] [2024-06-28 03:47:49,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702757470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:49,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:49,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:47:49,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431344790] [2024-06-28 03:47:49,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:49,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:47:49,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:49,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:47:49,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:47:49,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:47:49,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 576 transitions, 7210 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:49,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:49,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:47:49,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:51,459 INFO L124 PetriNetUnfolderBase]: 4912/7619 cut-off events. [2024-06-28 03:47:51,460 INFO L125 PetriNetUnfolderBase]: For 796277/796277 co-relation queries the response was YES. [2024-06-28 03:47:51,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62436 conditions, 7619 events. 4912/7619 cut-off events. For 796277/796277 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 46081 event pairs, 2422 based on Foata normal form. 2/7620 useless extension candidates. Maximal degree in co-relation 62240. Up to 7550 conditions per place. [2024-06-28 03:47:51,585 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 571 selfloop transitions, 17 changer transitions 0/591 dead transitions. [2024-06-28 03:47:51,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 591 transitions, 8516 flow [2024-06-28 03:47:51,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:47:51,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:47:51,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2024-06-28 03:47:51,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-28 03:47:51,586 INFO L175 Difference]: Start difference. First operand has 421 places, 576 transitions, 7210 flow. Second operand 8 states and 111 transitions. [2024-06-28 03:47:51,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 591 transitions, 8516 flow [2024-06-28 03:47:54,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 591 transitions, 8415 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 03:47:54,857 INFO L231 Difference]: Finished difference. Result has 423 places, 578 transitions, 7222 flow [2024-06-28 03:47:54,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7109, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7222, PETRI_PLACES=423, PETRI_TRANSITIONS=578} [2024-06-28 03:47:54,858 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 382 predicate places. [2024-06-28 03:47:54,858 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 578 transitions, 7222 flow [2024-06-28 03:47:54,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:54,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:54,859 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 03:47:54,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 03:47:54,859 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 03:47:54,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:54,859 INFO L85 PathProgramCache]: Analyzing trace with hash 812819684, now seen corresponding path program 5 times [2024-06-28 03:47:54,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:54,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169595662] [2024-06-28 03:47:54,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:54,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:55,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:55,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:55,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169595662] [2024-06-28 03:47:55,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169595662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:55,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:55,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:47:55,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786993791] [2024-06-28 03:47:55,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:55,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:47:55,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:55,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:47:55,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:47:55,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:47:55,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 578 transitions, 7222 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:55,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:55,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:47:55,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:57,753 INFO L124 PetriNetUnfolderBase]: 4920/7631 cut-off events. [2024-06-28 03:47:57,753 INFO L125 PetriNetUnfolderBase]: For 812971/812971 co-relation queries the response was YES. [2024-06-28 03:47:57,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62733 conditions, 7631 events. 4920/7631 cut-off events. For 812971/812971 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 46094 event pairs, 2424 based on Foata normal form. 2/7632 useless extension candidates. Maximal degree in co-relation 62536. Up to 7557 conditions per place. [2024-06-28 03:47:57,889 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 573 selfloop transitions, 17 changer transitions 0/593 dead transitions. [2024-06-28 03:47:57,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 593 transitions, 8512 flow [2024-06-28 03:47:57,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:47:57,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:47:57,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-28 03:47:57,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 03:47:57,891 INFO L175 Difference]: Start difference. First operand has 423 places, 578 transitions, 7222 flow. Second operand 8 states and 110 transitions. [2024-06-28 03:47:57,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 593 transitions, 8512 flow [2024-06-28 03:48:01,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 593 transitions, 8419 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-28 03:48:01,454 INFO L231 Difference]: Finished difference. Result has 426 places, 580 transitions, 7246 flow [2024-06-28 03:48:01,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7129, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7246, PETRI_PLACES=426, PETRI_TRANSITIONS=580} [2024-06-28 03:48:01,455 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 385 predicate places. [2024-06-28 03:48:01,455 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 580 transitions, 7246 flow [2024-06-28 03:48:01,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:01,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:01,456 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 03:48:01,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 03:48:01,456 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 03:48:01,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:01,456 INFO L85 PathProgramCache]: Analyzing trace with hash 547122404, now seen corresponding path program 6 times [2024-06-28 03:48:01,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:01,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522497797] [2024-06-28 03:48:01,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:01,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:02,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:02,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:02,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522497797] [2024-06-28 03:48:02,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522497797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:02,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:02,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:48:02,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031676603] [2024-06-28 03:48:02,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:02,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:48:02,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:02,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:48:02,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:48:02,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:48:02,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 580 transitions, 7246 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:02,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:02,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:48:02,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:04,370 INFO L124 PetriNetUnfolderBase]: 4936/7655 cut-off events. [2024-06-28 03:48:04,370 INFO L125 PetriNetUnfolderBase]: For 829163/829163 co-relation queries the response was YES. [2024-06-28 03:48:04,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63080 conditions, 7655 events. 4936/7655 cut-off events. For 829163/829163 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 46328 event pairs, 2432 based on Foata normal form. 2/7656 useless extension candidates. Maximal degree in co-relation 62882. Up to 7586 conditions per place. [2024-06-28 03:48:04,500 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 578 selfloop transitions, 16 changer transitions 0/597 dead transitions. [2024-06-28 03:48:04,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 597 transitions, 8568 flow [2024-06-28 03:48:04,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:48:04,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:48:04,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-28 03:48:04,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 03:48:04,501 INFO L175 Difference]: Start difference. First operand has 426 places, 580 transitions, 7246 flow. Second operand 8 states and 110 transitions. [2024-06-28 03:48:04,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 597 transitions, 8568 flow [2024-06-28 03:48:07,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 597 transitions, 8467 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-28 03:48:07,819 INFO L231 Difference]: Finished difference. Result has 429 places, 584 transitions, 7279 flow [2024-06-28 03:48:07,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7145, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7279, PETRI_PLACES=429, PETRI_TRANSITIONS=584} [2024-06-28 03:48:07,820 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 388 predicate places. [2024-06-28 03:48:07,820 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 584 transitions, 7279 flow [2024-06-28 03:48:07,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:07,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:07,820 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 03:48:07,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 03:48:07,821 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 03:48:07,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:07,821 INFO L85 PathProgramCache]: Analyzing trace with hash 546907202, now seen corresponding path program 5 times [2024-06-28 03:48:07,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:07,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180116638] [2024-06-28 03:48:07,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:07,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:07,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:08,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:08,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:08,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180116638] [2024-06-28 03:48:08,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180116638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:08,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:08,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:48:08,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671096162] [2024-06-28 03:48:08,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:08,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:48:08,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:08,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:48:08,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:48:08,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:48:08,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 584 transitions, 7279 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:08,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:08,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:48:08,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:10,854 INFO L124 PetriNetUnfolderBase]: 4938/7658 cut-off events. [2024-06-28 03:48:10,854 INFO L125 PetriNetUnfolderBase]: For 837958/837958 co-relation queries the response was YES. [2024-06-28 03:48:10,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63189 conditions, 7658 events. 4938/7658 cut-off events. For 837958/837958 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 46391 event pairs, 2428 based on Foata normal form. 2/7659 useless extension candidates. Maximal degree in co-relation 62989. Up to 7579 conditions per place. [2024-06-28 03:48:11,004 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 578 selfloop transitions, 21 changer transitions 0/602 dead transitions. [2024-06-28 03:48:11,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 602 transitions, 8663 flow [2024-06-28 03:48:11,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:48:11,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:48:11,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-28 03:48:11,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34444444444444444 [2024-06-28 03:48:11,006 INFO L175 Difference]: Start difference. First operand has 429 places, 584 transitions, 7279 flow. Second operand 9 states and 124 transitions. [2024-06-28 03:48:11,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 602 transitions, 8663 flow [2024-06-28 03:48:14,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 602 transitions, 8563 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-28 03:48:14,896 INFO L231 Difference]: Finished difference. Result has 433 places, 587 transitions, 7331 flow [2024-06-28 03:48:14,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7179, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7331, PETRI_PLACES=433, PETRI_TRANSITIONS=587} [2024-06-28 03:48:14,896 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 392 predicate places. [2024-06-28 03:48:14,896 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 587 transitions, 7331 flow [2024-06-28 03:48:14,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:14,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:14,897 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 03:48:14,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 03:48:14,897 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 03:48:14,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:14,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1135708366, now seen corresponding path program 7 times [2024-06-28 03:48:14,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:14,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248570891] [2024-06-28 03:48:14,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:14,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:15,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:15,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:15,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248570891] [2024-06-28 03:48:15,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248570891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:15,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:15,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:48:15,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091985] [2024-06-28 03:48:15,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:15,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:48:15,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:15,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:48:15,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:48:16,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:48:16,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 587 transitions, 7331 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:16,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:16,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:48:16,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:18,135 INFO L124 PetriNetUnfolderBase]: 4946/7670 cut-off events. [2024-06-28 03:48:18,135 INFO L125 PetriNetUnfolderBase]: For 854338/854338 co-relation queries the response was YES. [2024-06-28 03:48:18,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63861 conditions, 7670 events. 4946/7670 cut-off events. For 854338/854338 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 46455 event pairs, 2428 based on Foata normal form. 2/7671 useless extension candidates. Maximal degree in co-relation 63660. Up to 7586 conditions per place. [2024-06-28 03:48:18,246 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 572 selfloop transitions, 27 changer transitions 0/602 dead transitions. [2024-06-28 03:48:18,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 602 transitions, 8673 flow [2024-06-28 03:48:18,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:48:18,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:48:18,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-28 03:48:18,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 03:48:18,247 INFO L175 Difference]: Start difference. First operand has 433 places, 587 transitions, 7331 flow. Second operand 8 states and 112 transitions. [2024-06-28 03:48:18,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 602 transitions, 8673 flow [2024-06-28 03:48:22,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 602 transitions, 8543 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-28 03:48:22,159 INFO L231 Difference]: Finished difference. Result has 434 places, 589 transitions, 7351 flow [2024-06-28 03:48:22,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7201, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=560, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7351, PETRI_PLACES=434, PETRI_TRANSITIONS=589} [2024-06-28 03:48:22,159 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 393 predicate places. [2024-06-28 03:48:22,160 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 589 transitions, 7351 flow [2024-06-28 03:48:22,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:22,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:22,160 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 03:48:22,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 03:48:22,160 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 03:48:22,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:22,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1135708583, now seen corresponding path program 1 times [2024-06-28 03:48:22,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:22,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445543722] [2024-06-28 03:48:22,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:22,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:22,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:23,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:23,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:23,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445543722] [2024-06-28 03:48:23,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445543722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:23,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:23,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:48:23,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404420196] [2024-06-28 03:48:23,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:23,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:48:23,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:23,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:48:23,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:48:23,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:48:23,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 589 transitions, 7351 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:23,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:23,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:48:23,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:25,151 INFO L124 PetriNetUnfolderBase]: 4943/7666 cut-off events. [2024-06-28 03:48:25,151 INFO L125 PetriNetUnfolderBase]: For 857836/857836 co-relation queries the response was YES. [2024-06-28 03:48:25,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63836 conditions, 7666 events. 4943/7666 cut-off events. For 857836/857836 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 46408 event pairs, 2429 based on Foata normal form. 1/7666 useless extension candidates. Maximal degree in co-relation 63634. Up to 7583 conditions per place. [2024-06-28 03:48:25,277 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 573 selfloop transitions, 29 changer transitions 0/605 dead transitions. [2024-06-28 03:48:25,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 605 transitions, 8739 flow [2024-06-28 03:48:25,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:48:25,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:48:25,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-06-28 03:48:25,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-28 03:48:25,279 INFO L175 Difference]: Start difference. First operand has 434 places, 589 transitions, 7351 flow. Second operand 8 states and 113 transitions. [2024-06-28 03:48:25,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 605 transitions, 8739 flow [2024-06-28 03:48:29,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 605 transitions, 8607 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-28 03:48:29,192 INFO L231 Difference]: Finished difference. Result has 436 places, 592 transitions, 7405 flow [2024-06-28 03:48:29,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7221, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=560, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7405, PETRI_PLACES=436, PETRI_TRANSITIONS=592} [2024-06-28 03:48:29,192 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 395 predicate places. [2024-06-28 03:48:29,193 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 592 transitions, 7405 flow [2024-06-28 03:48:29,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:29,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:29,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:29,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 03:48:29,193 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 03:48:29,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:29,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1135700926, now seen corresponding path program 8 times [2024-06-28 03:48:29,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:29,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278787231] [2024-06-28 03:48:29,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:29,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:30,203 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 03:48:30,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:30,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278787231] [2024-06-28 03:48:30,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278787231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:30,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:30,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:48:30,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169626250] [2024-06-28 03:48:30,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:30,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:48:30,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:30,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:48:30,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:48:30,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:48:30,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 592 transitions, 7405 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:30,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:30,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:48:30,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:32,240 INFO L124 PetriNetUnfolderBase]: 4938/7659 cut-off events. [2024-06-28 03:48:32,241 INFO L125 PetriNetUnfolderBase]: For 848681/848681 co-relation queries the response was YES. [2024-06-28 03:48:32,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63498 conditions, 7659 events. 4938/7659 cut-off events. For 848681/848681 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 46358 event pairs, 2430 based on Foata normal form. 2/7660 useless extension candidates. Maximal degree in co-relation 63295. Up to 7570 conditions per place. [2024-06-28 03:48:32,369 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 578 selfloop transitions, 26 changer transitions 0/607 dead transitions. [2024-06-28 03:48:32,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 607 transitions, 8747 flow [2024-06-28 03:48:32,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:48:32,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:48:32,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-28 03:48:32,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33055555555555555 [2024-06-28 03:48:32,373 INFO L175 Difference]: Start difference. First operand has 436 places, 592 transitions, 7405 flow. Second operand 9 states and 119 transitions. [2024-06-28 03:48:32,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 607 transitions, 8747 flow [2024-06-28 03:48:36,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 607 transitions, 8593 flow, removed 50 selfloop flow, removed 7 redundant places. [2024-06-28 03:48:36,435 INFO L231 Difference]: Finished difference. Result has 438 places, 594 transitions, 7401 flow [2024-06-28 03:48:36,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7251, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7401, PETRI_PLACES=438, PETRI_TRANSITIONS=594} [2024-06-28 03:48:36,436 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 397 predicate places. [2024-06-28 03:48:36,437 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 594 transitions, 7401 flow [2024-06-28 03:48:36,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:36,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:36,437 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 03:48:36,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 03:48:36,439 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 03:48:36,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:36,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1364405445, now seen corresponding path program 1 times [2024-06-28 03:48:36,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:36,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711768157] [2024-06-28 03:48:36,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:36,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:37,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:37,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:37,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711768157] [2024-06-28 03:48:37,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711768157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:37,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:37,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:48:37,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959516576] [2024-06-28 03:48:37,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:37,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:48:37,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:37,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:48:37,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:48:37,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:48:37,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 594 transitions, 7401 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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 03:48:37,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:37,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:48:37,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:39,363 INFO L124 PetriNetUnfolderBase]: 5250/8115 cut-off events. [2024-06-28 03:48:39,363 INFO L125 PetriNetUnfolderBase]: For 894996/895108 co-relation queries the response was YES. [2024-06-28 03:48:39,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67194 conditions, 8115 events. 5250/8115 cut-off events. For 894996/895108 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 49305 event pairs, 984 based on Foata normal form. 30/8104 useless extension candidates. Maximal degree in co-relation 66991. Up to 7346 conditions per place. [2024-06-28 03:48:39,501 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 511 selfloop transitions, 153 changer transitions 0/716 dead transitions. [2024-06-28 03:48:39,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 716 transitions, 10320 flow [2024-06-28 03:48:39,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:48:39,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:48:39,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-28 03:48:39,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068181818181818 [2024-06-28 03:48:39,503 INFO L175 Difference]: Start difference. First operand has 438 places, 594 transitions, 7401 flow. Second operand 11 states and 179 transitions. [2024-06-28 03:48:39,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 716 transitions, 10320 flow [2024-06-28 03:48:43,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 716 transitions, 10188 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-28 03:48:43,010 INFO L231 Difference]: Finished difference. Result has 444 places, 674 transitions, 8901 flow [2024-06-28 03:48:43,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7271, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8901, PETRI_PLACES=444, PETRI_TRANSITIONS=674} [2024-06-28 03:48:43,011 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 403 predicate places. [2024-06-28 03:48:43,011 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 674 transitions, 8901 flow [2024-06-28 03:48:43,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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 03:48:43,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:43,012 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 03:48:43,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 03:48:43,012 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 03:48:43,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:43,012 INFO L85 PathProgramCache]: Analyzing trace with hash 463101603, now seen corresponding path program 2 times [2024-06-28 03:48:43,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:43,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513848404] [2024-06-28 03:48:43,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:43,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:43,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:43,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:43,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513848404] [2024-06-28 03:48:43,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513848404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:43,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:43,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:48:43,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818760064] [2024-06-28 03:48:43,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:43,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:48:43,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:43,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:48:43,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:48:44,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:48:44,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 674 transitions, 8901 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:44,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:44,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:48:44,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:46,360 INFO L124 PetriNetUnfolderBase]: 5433/8358 cut-off events. [2024-06-28 03:48:46,360 INFO L125 PetriNetUnfolderBase]: For 908304/908308 co-relation queries the response was YES. [2024-06-28 03:48:46,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70912 conditions, 8358 events. 5433/8358 cut-off events. For 908304/908308 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 50572 event pairs, 1503 based on Foata normal form. 6/8363 useless extension candidates. Maximal degree in co-relation 70706. Up to 7966 conditions per place. [2024-06-28 03:48:46,507 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 611 selfloop transitions, 111 changer transitions 0/725 dead transitions. [2024-06-28 03:48:46,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 725 transitions, 11098 flow [2024-06-28 03:48:46,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:48:46,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:48:46,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 185 transitions. [2024-06-28 03:48:46,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-28 03:48:46,509 INFO L175 Difference]: Start difference. First operand has 444 places, 674 transitions, 8901 flow. Second operand 12 states and 185 transitions. [2024-06-28 03:48:46,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 725 transitions, 11098 flow [2024-06-28 03:48:50,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 725 transitions, 10860 flow, removed 95 selfloop flow, removed 4 redundant places. [2024-06-28 03:48:50,287 INFO L231 Difference]: Finished difference. Result has 453 places, 686 transitions, 9288 flow [2024-06-28 03:48:50,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8743, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9288, PETRI_PLACES=453, PETRI_TRANSITIONS=686} [2024-06-28 03:48:50,288 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 412 predicate places. [2024-06-28 03:48:50,288 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 686 transitions, 9288 flow [2024-06-28 03:48:50,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:50,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:50,288 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 03:48:50,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 03:48:50,289 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 03:48:50,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:50,289 INFO L85 PathProgramCache]: Analyzing trace with hash 10094777, now seen corresponding path program 3 times [2024-06-28 03:48:50,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:50,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639205821] [2024-06-28 03:48:50,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:50,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:51,013 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 03:48:51,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:51,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639205821] [2024-06-28 03:48:51,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639205821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:51,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:51,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:48:51,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178255855] [2024-06-28 03:48:51,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:51,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:48:51,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:51,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:48:51,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:48:51,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:48:51,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 686 transitions, 9288 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:51,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:51,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:48:51,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:53,377 INFO L124 PetriNetUnfolderBase]: 5445/8375 cut-off events. [2024-06-28 03:48:53,378 INFO L125 PetriNetUnfolderBase]: For 918873/918877 co-relation queries the response was YES. [2024-06-28 03:48:53,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71404 conditions, 8375 events. 5445/8375 cut-off events. For 918873/918877 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 50699 event pairs, 1571 based on Foata normal form. 6/8380 useless extension candidates. Maximal degree in co-relation 71195. Up to 8094 conditions per place. [2024-06-28 03:48:53,530 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 631 selfloop transitions, 98 changer transitions 0/732 dead transitions. [2024-06-28 03:48:53,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 732 transitions, 11184 flow [2024-06-28 03:48:53,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:48:53,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:48:53,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-06-28 03:48:53,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-28 03:48:53,531 INFO L175 Difference]: Start difference. First operand has 453 places, 686 transitions, 9288 flow. Second operand 11 states and 168 transitions. [2024-06-28 03:48:53,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 732 transitions, 11184 flow [2024-06-28 03:48:57,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 732 transitions, 10957 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 03:48:57,456 INFO L231 Difference]: Finished difference. Result has 459 places, 703 transitions, 9624 flow [2024-06-28 03:48:57,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9079, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=686, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9624, PETRI_PLACES=459, PETRI_TRANSITIONS=703} [2024-06-28 03:48:57,456 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 418 predicate places. [2024-06-28 03:48:57,456 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 703 transitions, 9624 flow [2024-06-28 03:48:57,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:57,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:57,457 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 03:48:57,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 03:48:57,457 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 03:48:57,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:57,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1157648810, now seen corresponding path program 1 times [2024-06-28 03:48:57,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:57,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347571579] [2024-06-28 03:48:57,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:57,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:58,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:58,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:58,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347571579] [2024-06-28 03:48:58,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347571579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:58,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:58,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:48:58,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016920595] [2024-06-28 03:48:58,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:58,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:48:58,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:58,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:48:58,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:48:58,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:48:58,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 703 transitions, 9624 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:58,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:58,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:48:58,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:00,865 INFO L124 PetriNetUnfolderBase]: 5487/8431 cut-off events. [2024-06-28 03:49:00,865 INFO L125 PetriNetUnfolderBase]: For 957201/957211 co-relation queries the response was YES. [2024-06-28 03:49:00,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72832 conditions, 8431 events. 5487/8431 cut-off events. For 957201/957211 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 50922 event pairs, 1213 based on Foata normal form. 14/8444 useless extension candidates. Maximal degree in co-relation 72620. Up to 8094 conditions per place. [2024-06-28 03:49:01,018 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 653 selfloop transitions, 111 changer transitions 0/767 dead transitions. [2024-06-28 03:49:01,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 767 transitions, 12059 flow [2024-06-28 03:49:01,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 03:49:01,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 03:49:01,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 209 transitions. [2024-06-28 03:49:01,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3732142857142857 [2024-06-28 03:49:01,019 INFO L175 Difference]: Start difference. First operand has 459 places, 703 transitions, 9624 flow. Second operand 14 states and 209 transitions. [2024-06-28 03:49:01,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 767 transitions, 12059 flow [2024-06-28 03:49:05,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 767 transitions, 11864 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-28 03:49:05,736 INFO L231 Difference]: Finished difference. Result has 470 places, 722 transitions, 10135 flow [2024-06-28 03:49:05,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9430, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=10135, PETRI_PLACES=470, PETRI_TRANSITIONS=722} [2024-06-28 03:49:05,737 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 429 predicate places. [2024-06-28 03:49:05,737 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 722 transitions, 10135 flow [2024-06-28 03:49:05,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:05,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:05,737 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 03:49:05,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 03:49:05,737 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 03:49:05,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:05,738 INFO L85 PathProgramCache]: Analyzing trace with hash -701895848, now seen corresponding path program 2 times [2024-06-28 03:49:05,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:05,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943605045] [2024-06-28 03:49:05,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:05,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:06,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:06,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:06,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943605045] [2024-06-28 03:49:06,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943605045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:06,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:06,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:49:06,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206411137] [2024-06-28 03:49:06,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:06,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:49:06,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:06,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:49:06,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:49:06,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:49:06,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 722 transitions, 10135 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:06,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:06,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:49:06,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:09,329 INFO L124 PetriNetUnfolderBase]: 5531/8488 cut-off events. [2024-06-28 03:49:09,330 INFO L125 PetriNetUnfolderBase]: For 1007565/1007575 co-relation queries the response was YES. [2024-06-28 03:49:09,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76382 conditions, 8488 events. 5531/8488 cut-off events. For 1007565/1007575 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 51232 event pairs, 1222 based on Foata normal form. 14/8501 useless extension candidates. Maximal degree in co-relation 76166. Up to 8020 conditions per place. [2024-06-28 03:49:09,488 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 637 selfloop transitions, 133 changer transitions 0/773 dead transitions. [2024-06-28 03:49:09,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 773 transitions, 12456 flow [2024-06-28 03:49:09,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:49:09,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:49:09,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 200 transitions. [2024-06-28 03:49:09,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-28 03:49:09,489 INFO L175 Difference]: Start difference. First operand has 470 places, 722 transitions, 10135 flow. Second operand 13 states and 200 transitions. [2024-06-28 03:49:09,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 773 transitions, 12456 flow [2024-06-28 03:49:14,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 773 transitions, 12106 flow, removed 113 selfloop flow, removed 8 redundant places. [2024-06-28 03:49:14,497 INFO L231 Difference]: Finished difference. Result has 475 places, 729 transitions, 10364 flow [2024-06-28 03:49:14,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9829, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=722, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10364, PETRI_PLACES=475, PETRI_TRANSITIONS=729} [2024-06-28 03:49:14,512 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 434 predicate places. [2024-06-28 03:49:14,512 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 729 transitions, 10364 flow [2024-06-28 03:49:14,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:14,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:14,512 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 03:49:14,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 03:49:14,513 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 03:49:14,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:14,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1934936718, now seen corresponding path program 3 times [2024-06-28 03:49:14,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:14,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017365279] [2024-06-28 03:49:14,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:14,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:15,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:15,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:15,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017365279] [2024-06-28 03:49:15,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017365279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:15,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:15,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:49:15,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373041806] [2024-06-28 03:49:15,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:15,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:49:15,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:15,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:49:15,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:49:15,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:49:15,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 729 transitions, 10364 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:15,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:15,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:49:15,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:17,651 INFO L124 PetriNetUnfolderBase]: 5551/8518 cut-off events. [2024-06-28 03:49:17,651 INFO L125 PetriNetUnfolderBase]: For 1028519/1028529 co-relation queries the response was YES. [2024-06-28 03:49:17,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77110 conditions, 8518 events. 5551/8518 cut-off events. For 1028519/1028529 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 51430 event pairs, 1236 based on Foata normal form. 14/8531 useless extension candidates. Maximal degree in co-relation 76892. Up to 8149 conditions per place. [2024-06-28 03:49:17,805 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 652 selfloop transitions, 120 changer transitions 0/775 dead transitions. [2024-06-28 03:49:17,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 775 transitions, 12309 flow [2024-06-28 03:49:17,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:49:17,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:49:17,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 195 transitions. [2024-06-28 03:49:17,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 03:49:17,807 INFO L175 Difference]: Start difference. First operand has 475 places, 729 transitions, 10364 flow. Second operand 13 states and 195 transitions. [2024-06-28 03:49:17,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 775 transitions, 12309 flow [2024-06-28 03:49:22,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 775 transitions, 11956 flow, removed 105 selfloop flow, removed 8 redundant places. [2024-06-28 03:49:22,591 INFO L231 Difference]: Finished difference. Result has 480 places, 733 transitions, 10414 flow [2024-06-28 03:49:22,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10055, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10414, PETRI_PLACES=480, PETRI_TRANSITIONS=733} [2024-06-28 03:49:22,592 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 439 predicate places. [2024-06-28 03:49:22,592 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 733 transitions, 10414 flow [2024-06-28 03:49:22,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:22,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:22,592 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 03:49:22,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 03:49:22,593 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 03:49:22,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:22,593 INFO L85 PathProgramCache]: Analyzing trace with hash -2138475060, now seen corresponding path program 4 times [2024-06-28 03:49:22,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:22,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55747555] [2024-06-28 03:49:22,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:22,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:23,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:23,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:23,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55747555] [2024-06-28 03:49:23,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55747555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:23,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:23,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:49:23,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923473928] [2024-06-28 03:49:23,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:23,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:49:23,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:23,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:49:23,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:49:23,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:49:23,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 733 transitions, 10414 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:23,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:23,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:49:23,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:25,777 INFO L124 PetriNetUnfolderBase]: 5539/8501 cut-off events. [2024-06-28 03:49:25,778 INFO L125 PetriNetUnfolderBase]: For 1013250/1013260 co-relation queries the response was YES. [2024-06-28 03:49:25,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76404 conditions, 8501 events. 5539/8501 cut-off events. For 1013250/1013260 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 51379 event pairs, 1244 based on Foata normal form. 14/8514 useless extension candidates. Maximal degree in co-relation 76184. Up to 8212 conditions per place. [2024-06-28 03:49:25,939 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 666 selfloop transitions, 100 changer transitions 0/769 dead transitions. [2024-06-28 03:49:25,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 769 transitions, 12152 flow [2024-06-28 03:49:25,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:49:25,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:49:25,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 178 transitions. [2024-06-28 03:49:25,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37083333333333335 [2024-06-28 03:49:25,940 INFO L175 Difference]: Start difference. First operand has 480 places, 733 transitions, 10414 flow. Second operand 12 states and 178 transitions. [2024-06-28 03:49:25,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 769 transitions, 12152 flow [2024-06-28 03:49:30,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 769 transitions, 11761 flow, removed 77 selfloop flow, removed 12 redundant places. [2024-06-28 03:49:30,684 INFO L231 Difference]: Finished difference. Result has 480 places, 733 transitions, 10231 flow [2024-06-28 03:49:30,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10023, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=633, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10231, PETRI_PLACES=480, PETRI_TRANSITIONS=733} [2024-06-28 03:49:30,697 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 439 predicate places. [2024-06-28 03:49:30,697 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 733 transitions, 10231 flow [2024-06-28 03:49:30,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:30,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:30,698 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 03:49:30,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 03:49:30,698 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 03:49:30,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:30,698 INFO L85 PathProgramCache]: Analyzing trace with hash -2138237693, now seen corresponding path program 1 times [2024-06-28 03:49:30,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:30,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029855878] [2024-06-28 03:49:30,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:30,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:31,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:31,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:31,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029855878] [2024-06-28 03:49:31,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029855878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:31,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:31,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:49:31,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830998382] [2024-06-28 03:49:31,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:31,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:49:31,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:31,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:49:31,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:49:31,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:49:31,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 733 transitions, 10231 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:31,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:31,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:49:31,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:34,649 INFO L124 PetriNetUnfolderBase]: 5533/8501 cut-off events. [2024-06-28 03:49:34,649 INFO L125 PetriNetUnfolderBase]: For 1003156/1003160 co-relation queries the response was YES. [2024-06-28 03:49:34,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75868 conditions, 8501 events. 5533/8501 cut-off events. For 1003156/1003160 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 51522 event pairs, 1560 based on Foata normal form. 6/8506 useless extension candidates. Maximal degree in co-relation 75647. Up to 8210 conditions per place. [2024-06-28 03:49:34,794 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 665 selfloop transitions, 97 changer transitions 0/765 dead transitions. [2024-06-28 03:49:34,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 765 transitions, 11927 flow [2024-06-28 03:49:34,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:49:34,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:49:34,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-06-28 03:49:34,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3795454545454545 [2024-06-28 03:49:34,795 INFO L175 Difference]: Start difference. First operand has 480 places, 733 transitions, 10231 flow. Second operand 11 states and 167 transitions. [2024-06-28 03:49:34,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 765 transitions, 11927 flow [2024-06-28 03:49:40,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 765 transitions, 11669 flow, removed 32 selfloop flow, removed 10 redundant places. [2024-06-28 03:49:40,064 INFO L231 Difference]: Finished difference. Result has 481 places, 733 transitions, 10182 flow [2024-06-28 03:49:40,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9973, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=636, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10182, PETRI_PLACES=481, PETRI_TRANSITIONS=733} [2024-06-28 03:49:40,064 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 440 predicate places. [2024-06-28 03:49:40,064 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 733 transitions, 10182 flow [2024-06-28 03:49:40,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:40,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:40,065 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 03:49:40,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 03:49:40,065 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 03:49:40,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:40,065 INFO L85 PathProgramCache]: Analyzing trace with hash -2121922333, now seen corresponding path program 4 times [2024-06-28 03:49:40,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:40,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435131821] [2024-06-28 03:49:40,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:40,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:40,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:40,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:40,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435131821] [2024-06-28 03:49:40,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435131821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:40,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:40,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:49:40,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120462325] [2024-06-28 03:49:40,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:40,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:49:40,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:40,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:49:40,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:49:41,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:49:41,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 733 transitions, 10182 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:41,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:41,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:49:41,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:44,058 INFO L124 PetriNetUnfolderBase]: 5537/8508 cut-off events. [2024-06-28 03:49:44,059 INFO L125 PetriNetUnfolderBase]: For 1018765/1018773 co-relation queries the response was YES. [2024-06-28 03:49:44,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75792 conditions, 8508 events. 5537/8508 cut-off events. For 1018765/1018773 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 51474 event pairs, 1479 based on Foata normal form. 12/8517 useless extension candidates. Maximal degree in co-relation 75570. Up to 7902 conditions per place. [2024-06-28 03:49:44,199 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 579 selfloop transitions, 185 changer transitions 0/767 dead transitions. [2024-06-28 03:49:44,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 767 transitions, 12313 flow [2024-06-28 03:49:44,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:49:44,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:49:44,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-28 03:49:44,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3972222222222222 [2024-06-28 03:49:44,201 INFO L175 Difference]: Start difference. First operand has 481 places, 733 transitions, 10182 flow. Second operand 9 states and 143 transitions. [2024-06-28 03:49:44,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 767 transitions, 12313 flow [2024-06-28 03:49:49,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 767 transitions, 11986 flow, removed 54 selfloop flow, removed 10 redundant places. [2024-06-28 03:49:49,595 INFO L231 Difference]: Finished difference. Result has 481 places, 739 transitions, 10560 flow [2024-06-28 03:49:49,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9857, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10560, PETRI_PLACES=481, PETRI_TRANSITIONS=739} [2024-06-28 03:49:49,596 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 440 predicate places. [2024-06-28 03:49:49,596 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 739 transitions, 10560 flow [2024-06-28 03:49:49,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:49,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:49,597 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 03:49:49,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 03:49:49,597 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 03:49:49,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:49,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1582738789, now seen corresponding path program 5 times [2024-06-28 03:49:49,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:49,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707256566] [2024-06-28 03:49:49,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:49,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:49,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:50,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:50,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:50,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707256566] [2024-06-28 03:49:50,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707256566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:50,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:50,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:49:50,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502263497] [2024-06-28 03:49:50,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:50,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:49:50,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:50,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:49:50,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:49:50,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:49:50,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 739 transitions, 10560 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:50,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:50,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:49:50,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:53,489 INFO L124 PetriNetUnfolderBase]: 5557/8534 cut-off events. [2024-06-28 03:49:53,490 INFO L125 PetriNetUnfolderBase]: For 1022415/1022423 co-relation queries the response was YES. [2024-06-28 03:49:53,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76862 conditions, 8534 events. 5557/8534 cut-off events. For 1022415/1022423 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 51663 event pairs, 1571 based on Foata normal form. 12/8544 useless extension candidates. Maximal degree in co-relation 76638. Up to 8206 conditions per place. [2024-06-28 03:49:53,631 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 655 selfloop transitions, 109 changer transitions 0/767 dead transitions. [2024-06-28 03:49:53,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 767 transitions, 12428 flow [2024-06-28 03:49:53,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:49:53,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:49:53,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-06-28 03:49:53,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38055555555555554 [2024-06-28 03:49:53,633 INFO L175 Difference]: Start difference. First operand has 481 places, 739 transitions, 10560 flow. Second operand 9 states and 137 transitions. [2024-06-28 03:49:53,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 767 transitions, 12428 flow [2024-06-28 03:49:58,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 767 transitions, 11861 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-28 03:49:58,659 INFO L231 Difference]: Finished difference. Result has 481 places, 746 transitions, 10470 flow [2024-06-28 03:49:58,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10023, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=739, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=631, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10470, PETRI_PLACES=481, PETRI_TRANSITIONS=746} [2024-06-28 03:49:58,660 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 440 predicate places. [2024-06-28 03:49:58,660 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 746 transitions, 10470 flow [2024-06-28 03:49:58,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:58,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:58,660 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 03:49:58,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 03:49:58,661 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 03:49:58,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:58,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1502420114, now seen corresponding path program 5 times [2024-06-28 03:49:58,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:58,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726047742] [2024-06-28 03:49:58,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:58,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:59,373 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 03:49:59,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:59,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726047742] [2024-06-28 03:49:59,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726047742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:59,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:59,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:49:59,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328742970] [2024-06-28 03:49:59,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:59,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:49:59,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:59,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:49:59,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:49:59,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:49:59,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 746 transitions, 10470 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:59,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:59,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:49:59,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:02,568 INFO L124 PetriNetUnfolderBase]: 5714/8743 cut-off events. [2024-06-28 03:50:02,568 INFO L125 PetriNetUnfolderBase]: For 1034750/1034760 co-relation queries the response was YES. [2024-06-28 03:50:02,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78830 conditions, 8743 events. 5714/8743 cut-off events. For 1034750/1034760 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 52740 event pairs, 1097 based on Foata normal form. 14/8756 useless extension candidates. Maximal degree in co-relation 78606. Up to 8193 conditions per place. [2024-06-28 03:50:02,718 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 687 selfloop transitions, 146 changer transitions 0/836 dead transitions. [2024-06-28 03:50:02,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 836 transitions, 13362 flow [2024-06-28 03:50:02,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:50:02,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:50:02,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 204 transitions. [2024-06-28 03:50:02,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923076923076923 [2024-06-28 03:50:02,719 INFO L175 Difference]: Start difference. First operand has 481 places, 746 transitions, 10470 flow. Second operand 13 states and 204 transitions. [2024-06-28 03:50:02,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 836 transitions, 13362 flow [2024-06-28 03:50:08,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 836 transitions, 13064 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-28 03:50:08,024 INFO L231 Difference]: Finished difference. Result has 493 places, 786 transitions, 11359 flow [2024-06-28 03:50:08,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10190, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=746, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11359, PETRI_PLACES=493, PETRI_TRANSITIONS=786} [2024-06-28 03:50:08,041 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 452 predicate places. [2024-06-28 03:50:08,041 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 786 transitions, 11359 flow [2024-06-28 03:50:08,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:08,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:08,041 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 03:50:08,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 03:50:08,042 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 03:50:08,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:08,042 INFO L85 PathProgramCache]: Analyzing trace with hash 54313056, now seen corresponding path program 6 times [2024-06-28 03:50:08,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:08,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661403630] [2024-06-28 03:50:08,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:08,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:08,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:08,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:08,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661403630] [2024-06-28 03:50:08,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661403630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:08,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:08,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:50:08,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679527156] [2024-06-28 03:50:08,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:08,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:50:08,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:08,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:50:08,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:50:08,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:50:08,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 786 transitions, 11359 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:08,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:08,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:50:08,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:11,860 INFO L124 PetriNetUnfolderBase]: 5754/8805 cut-off events. [2024-06-28 03:50:11,860 INFO L125 PetriNetUnfolderBase]: For 1073523/1073537 co-relation queries the response was YES. [2024-06-28 03:50:11,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80498 conditions, 8805 events. 5754/8805 cut-off events. For 1073523/1073537 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 53231 event pairs, 1190 based on Foata normal form. 22/8823 useless extension candidates. Maximal degree in co-relation 80269. Up to 8178 conditions per place. [2024-06-28 03:50:12,010 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 642 selfloop transitions, 179 changer transitions 0/824 dead transitions. [2024-06-28 03:50:12,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 824 transitions, 13480 flow [2024-06-28 03:50:12,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:50:12,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:50:12,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-28 03:50:12,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.385 [2024-06-28 03:50:12,012 INFO L175 Difference]: Start difference. First operand has 493 places, 786 transitions, 11359 flow. Second operand 10 states and 154 transitions. [2024-06-28 03:50:12,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 824 transitions, 13480 flow [2024-06-28 03:50:17,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 824 transitions, 13206 flow, removed 99 selfloop flow, removed 5 redundant places. [2024-06-28 03:50:17,890 INFO L231 Difference]: Finished difference. Result has 498 places, 792 transitions, 11731 flow [2024-06-28 03:50:17,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11129, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=786, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=607, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11731, PETRI_PLACES=498, PETRI_TRANSITIONS=792} [2024-06-28 03:50:17,891 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 457 predicate places. [2024-06-28 03:50:17,891 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 792 transitions, 11731 flow [2024-06-28 03:50:17,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:17,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:17,891 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 03:50:17,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 03:50:17,892 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 03:50:17,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:17,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1295761094, now seen corresponding path program 7 times [2024-06-28 03:50:17,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:17,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811547329] [2024-06-28 03:50:17,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:17,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:18,592 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 03:50:18,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:18,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811547329] [2024-06-28 03:50:18,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811547329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:18,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:18,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:50:18,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169810068] [2024-06-28 03:50:18,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:18,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:50:18,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:18,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:50:18,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:50:18,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:50:18,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 792 transitions, 11731 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:18,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:18,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:50:18,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:21,538 INFO L124 PetriNetUnfolderBase]: 5794/8858 cut-off events. [2024-06-28 03:50:21,538 INFO L125 PetriNetUnfolderBase]: For 1093019/1093033 co-relation queries the response was YES. [2024-06-28 03:50:21,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81868 conditions, 8858 events. 5794/8858 cut-off events. For 1093019/1093033 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 53517 event pairs, 1306 based on Foata normal form. 22/8877 useless extension candidates. Maximal degree in co-relation 81637. Up to 8456 conditions per place. [2024-06-28 03:50:21,697 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 690 selfloop transitions, 131 changer transitions 0/824 dead transitions. [2024-06-28 03:50:21,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 824 transitions, 13760 flow [2024-06-28 03:50:21,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:50:21,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:50:21,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-28 03:50:21,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37 [2024-06-28 03:50:21,699 INFO L175 Difference]: Start difference. First operand has 498 places, 792 transitions, 11731 flow. Second operand 10 states and 148 transitions. [2024-06-28 03:50:21,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 824 transitions, 13760 flow [2024-06-28 03:50:26,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 824 transitions, 13241 flow, removed 85 selfloop flow, removed 9 redundant places. [2024-06-28 03:50:26,963 INFO L231 Difference]: Finished difference. Result has 499 places, 798 transitions, 11727 flow [2024-06-28 03:50:26,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11212, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=792, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11727, PETRI_PLACES=499, PETRI_TRANSITIONS=798} [2024-06-28 03:50:26,963 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 458 predicate places. [2024-06-28 03:50:26,963 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 798 transitions, 11727 flow [2024-06-28 03:50:26,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:26,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:26,964 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 03:50:26,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 03:50:26,964 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 03:50:26,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:26,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1295493967, now seen corresponding path program 2 times [2024-06-28 03:50:26,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:26,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089089530] [2024-06-28 03:50:26,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:26,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:27,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:27,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:27,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089089530] [2024-06-28 03:50:27,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089089530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:27,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:27,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:50:27,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132089421] [2024-06-28 03:50:27,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:27,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:50:27,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:27,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:50:27,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:50:27,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:50:27,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 798 transitions, 11727 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:27,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:27,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:50:27,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:31,088 INFO L124 PetriNetUnfolderBase]: 5814/8893 cut-off events. [2024-06-28 03:50:31,088 INFO L125 PetriNetUnfolderBase]: For 1068759/1068767 co-relation queries the response was YES. [2024-06-28 03:50:31,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82054 conditions, 8893 events. 5814/8893 cut-off events. For 1068759/1068767 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 53936 event pairs, 1621 based on Foata normal form. 12/8903 useless extension candidates. Maximal degree in co-relation 81823. Up to 8522 conditions per place. [2024-06-28 03:50:31,237 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 704 selfloop transitions, 119 changer transitions 0/826 dead transitions. [2024-06-28 03:50:31,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 826 transitions, 13706 flow [2024-06-28 03:50:31,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:50:31,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:50:31,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-28 03:50:31,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-28 03:50:31,238 INFO L175 Difference]: Start difference. First operand has 499 places, 798 transitions, 11727 flow. Second operand 9 states and 136 transitions. [2024-06-28 03:50:31,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 826 transitions, 13706 flow [2024-06-28 03:50:36,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 826 transitions, 13270 flow, removed 91 selfloop flow, removed 9 redundant places. [2024-06-28 03:50:36,686 INFO L231 Difference]: Finished difference. Result has 499 places, 804 transitions, 11784 flow [2024-06-28 03:50:36,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11291, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=798, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=679, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11784, PETRI_PLACES=499, PETRI_TRANSITIONS=804} [2024-06-28 03:50:36,686 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 458 predicate places. [2024-06-28 03:50:36,687 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 804 transitions, 11784 flow [2024-06-28 03:50:36,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:36,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:36,687 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 03:50:36,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 03:50:36,687 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 03:50:36,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:36,688 INFO L85 PathProgramCache]: Analyzing trace with hash -917740302, now seen corresponding path program 8 times [2024-06-28 03:50:36,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:36,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745203028] [2024-06-28 03:50:36,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:36,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:37,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:37,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:37,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745203028] [2024-06-28 03:50:37,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745203028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:37,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:37,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:50:37,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644777149] [2024-06-28 03:50:37,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:37,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:50:37,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:37,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:50:37,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:50:37,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:50:37,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 804 transitions, 11784 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:37,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:37,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:50:37,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:40,697 INFO L124 PetriNetUnfolderBase]: 5888/8997 cut-off events. [2024-06-28 03:50:40,698 INFO L125 PetriNetUnfolderBase]: For 1097656/1097664 co-relation queries the response was YES. [2024-06-28 03:50:40,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83473 conditions, 8997 events. 5888/8997 cut-off events. For 1097656/1097664 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 54538 event pairs, 1612 based on Foata normal form. 12/9007 useless extension candidates. Maximal degree in co-relation 83242. Up to 8680 conditions per place. [2024-06-28 03:50:41,047 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 755 selfloop transitions, 83 changer transitions 0/841 dead transitions. [2024-06-28 03:50:41,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 841 transitions, 14197 flow [2024-06-28 03:50:41,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:50:41,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:50:41,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-28 03:50:41,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3972222222222222 [2024-06-28 03:50:41,048 INFO L175 Difference]: Start difference. First operand has 499 places, 804 transitions, 11784 flow. Second operand 9 states and 143 transitions. [2024-06-28 03:50:41,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 841 transitions, 14197 flow [2024-06-28 03:50:46,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 841 transitions, 13855 flow, removed 64 selfloop flow, removed 8 redundant places. [2024-06-28 03:50:46,280 INFO L231 Difference]: Finished difference. Result has 501 places, 813 transitions, 11933 flow [2024-06-28 03:50:46,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11444, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=804, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=724, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11933, PETRI_PLACES=501, PETRI_TRANSITIONS=813} [2024-06-28 03:50:46,281 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 460 predicate places. [2024-06-28 03:50:46,281 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 813 transitions, 11933 flow [2024-06-28 03:50:46,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:46,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:46,281 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 03:50:46,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 03:50:46,281 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 03:50:46,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:46,282 INFO L85 PathProgramCache]: Analyzing trace with hash 2077152893, now seen corresponding path program 1 times [2024-06-28 03:50:46,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:46,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378411747] [2024-06-28 03:50:46,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:46,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:47,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:47,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:47,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378411747] [2024-06-28 03:50:47,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378411747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:47,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:47,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:50:47,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167966405] [2024-06-28 03:50:47,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:47,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:50:47,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:47,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:50:47,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:50:47,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:50:47,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 813 transitions, 11933 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:47,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:47,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:50:47,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:50,241 INFO L124 PetriNetUnfolderBase]: 5992/9143 cut-off events. [2024-06-28 03:50:50,242 INFO L125 PetriNetUnfolderBase]: For 1129349/1129357 co-relation queries the response was YES. [2024-06-28 03:50:50,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85543 conditions, 9143 events. 5992/9143 cut-off events. For 1129349/1129357 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 55456 event pairs, 1634 based on Foata normal form. 12/9153 useless extension candidates. Maximal degree in co-relation 85311. Up to 8724 conditions per place. [2024-06-28 03:50:50,416 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 745 selfloop transitions, 111 changer transitions 0/859 dead transitions. [2024-06-28 03:50:50,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 859 transitions, 14445 flow [2024-06-28 03:50:50,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:50:50,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:50:50,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-28 03:50:50,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:50:50,418 INFO L175 Difference]: Start difference. First operand has 501 places, 813 transitions, 11933 flow. Second operand 9 states and 144 transitions. [2024-06-28 03:50:50,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 859 transitions, 14445 flow [2024-06-28 03:50:55,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 859 transitions, 14162 flow, removed 92 selfloop flow, removed 5 redundant places. [2024-06-28 03:50:55,922 INFO L231 Difference]: Finished difference. Result has 507 places, 832 transitions, 12309 flow [2024-06-28 03:50:55,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11650, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=813, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=705, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12309, PETRI_PLACES=507, PETRI_TRANSITIONS=832} [2024-06-28 03:50:55,923 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 466 predicate places. [2024-06-28 03:50:55,923 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 832 transitions, 12309 flow [2024-06-28 03:50:55,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:55,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:55,923 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 03:50:55,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 03:50:55,923 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 03:50:55,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:55,924 INFO L85 PathProgramCache]: Analyzing trace with hash 2077152676, now seen corresponding path program 9 times [2024-06-28 03:50:55,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:55,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693081623] [2024-06-28 03:50:55,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:55,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:55,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:56,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:56,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:56,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693081623] [2024-06-28 03:50:56,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693081623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:56,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:56,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:50:56,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138586868] [2024-06-28 03:50:56,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:56,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:50:56,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:56,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:50:56,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:50:56,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:50:56,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 832 transitions, 12309 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:56,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:56,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:50:56,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:59,789 INFO L124 PetriNetUnfolderBase]: 6012/9171 cut-off events. [2024-06-28 03:50:59,789 INFO L125 PetriNetUnfolderBase]: For 1148601/1148609 co-relation queries the response was YES. [2024-06-28 03:50:59,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86544 conditions, 9171 events. 6012/9171 cut-off events. For 1148601/1148609 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 55580 event pairs, 1626 based on Foata normal form. 12/9181 useless extension candidates. Maximal degree in co-relation 86308. Up to 8842 conditions per place. [2024-06-28 03:50:59,970 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 773 selfloop transitions, 85 changer transitions 0/861 dead transitions. [2024-06-28 03:50:59,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 861 transitions, 14556 flow [2024-06-28 03:50:59,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:50:59,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:50:59,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-28 03:50:59,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3972222222222222 [2024-06-28 03:50:59,971 INFO L175 Difference]: Start difference. First operand has 507 places, 832 transitions, 12309 flow. Second operand 9 states and 143 transitions. [2024-06-28 03:50:59,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 861 transitions, 14556 flow [2024-06-28 03:51:05,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 861 transitions, 14369 flow, removed 59 selfloop flow, removed 5 redundant places. [2024-06-28 03:51:05,758 INFO L231 Difference]: Finished difference. Result has 511 places, 835 transitions, 12391 flow [2024-06-28 03:51:05,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12124, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=832, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=750, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12391, PETRI_PLACES=511, PETRI_TRANSITIONS=835} [2024-06-28 03:51:05,759 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 470 predicate places. [2024-06-28 03:51:05,759 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 835 transitions, 12391 flow [2024-06-28 03:51:05,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:05,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:51:05,760 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 03:51:05,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 03:51:05,760 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 03:51:05,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:51:05,760 INFO L85 PathProgramCache]: Analyzing trace with hash 2071462006, now seen corresponding path program 10 times [2024-06-28 03:51:05,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:51:05,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772462722] [2024-06-28 03:51:05,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:51:05,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:51:05,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:51:06,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:51:06,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:51:06,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772462722] [2024-06-28 03:51:06,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772462722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:51:06,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:51:06,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:51:06,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492489205] [2024-06-28 03:51:06,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:51:06,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:51:06,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:51:06,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:51:06,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:51:06,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:51:06,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 835 transitions, 12391 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:06,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:51:06,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:51:06,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:51:09,758 INFO L124 PetriNetUnfolderBase]: 6142/9342 cut-off events. [2024-06-28 03:51:09,759 INFO L125 PetriNetUnfolderBase]: For 1235208/1235214 co-relation queries the response was YES. [2024-06-28 03:51:09,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90538 conditions, 9342 events. 6142/9342 cut-off events. For 1235208/1235214 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 56497 event pairs, 1070 based on Foata normal form. 10/9348 useless extension candidates. Maximal degree in co-relation 90301. Up to 7555 conditions per place. [2024-06-28 03:51:09,950 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 572 selfloop transitions, 309 changer transitions 0/884 dead transitions. [2024-06-28 03:51:09,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 884 transitions, 15737 flow [2024-06-28 03:51:09,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:51:09,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:51:09,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 03:51:09,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-28 03:51:09,951 INFO L175 Difference]: Start difference. First operand has 511 places, 835 transitions, 12391 flow. Second operand 9 states and 154 transitions. [2024-06-28 03:51:09,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 884 transitions, 15737 flow [2024-06-28 03:51:15,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 884 transitions, 15528 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-28 03:51:15,715 INFO L231 Difference]: Finished difference. Result has 516 places, 851 transitions, 13684 flow [2024-06-28 03:51:15,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12182, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=835, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=296, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13684, PETRI_PLACES=516, PETRI_TRANSITIONS=851} [2024-06-28 03:51:15,716 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 475 predicate places. [2024-06-28 03:51:15,716 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 851 transitions, 13684 flow [2024-06-28 03:51:15,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:15,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:51:15,716 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 03:51:15,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 03:51:15,717 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 03:51:15,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:51:15,717 INFO L85 PathProgramCache]: Analyzing trace with hash -922952952, now seen corresponding path program 11 times [2024-06-28 03:51:15,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:51:15,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024637197] [2024-06-28 03:51:15,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:51:15,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:51:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:51:16,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:51:16,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:51:16,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024637197] [2024-06-28 03:51:16,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024637197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:51:16,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:51:16,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:51:16,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060983052] [2024-06-28 03:51:16,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:51:16,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:51:16,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:51:16,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:51:16,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:51:16,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 03:51:16,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 851 transitions, 13684 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:16,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:51:16,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 03:51:16,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand