./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix019_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix019_tso.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix019_tso.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix019_tso.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:27:22,167 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:27:22,217 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:27:22,220 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:27:22,220 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:27:22,234 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:27:22,234 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:27:22,234 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:27:22,235 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:27:22,235 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:27:22,235 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:27:22,236 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:27:22,236 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:27:22,237 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:27:22,237 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:27:22,237 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:27:22,237 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:27:22,238 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:27:22,238 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:27:22,238 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:27:22,239 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:27:22,239 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:27:22,239 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:27:22,239 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:27:22,240 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:27:22,240 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:27:22,240 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:27:22,240 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:27:22,241 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:27:22,241 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:27:22,241 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:27:22,241 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:27:22,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:27:22,242 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:27:22,242 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:27:22,242 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:27:22,242 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:27:22,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:27:22,243 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:27:22,243 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:27:22,243 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:27:22,243 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:27:22,244 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:27:22,244 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:27:22,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:27:22,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:27:22,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:27:22,499 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:27:22,499 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:27:22,500 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix019_tso.oepc.i [2024-06-28 01:27:23,593 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:27:23,782 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:27:23,782 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix019_tso.oepc.i [2024-06-28 01:27:23,794 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42eceb596/1c35177faadb4e8797e103615cd26a71/FLAG85e537b02 [2024-06-28 01:27:23,805 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42eceb596/1c35177faadb4e8797e103615cd26a71 [2024-06-28 01:27:23,807 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:27:23,807 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:27:23,808 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix019_tso.oepc.yml/witness.yml [2024-06-28 01:27:23,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:27:23,967 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:27:23,968 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:27:23,968 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:27:23,972 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:27:23,972 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:27:23" (1/2) ... [2024-06-28 01:27:23,973 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee65677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:27:23, skipping insertion in model container [2024-06-28 01:27:23,973 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:27:23" (1/2) ... [2024-06-28 01:27:23,974 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@19583c03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:27:23, skipping insertion in model container [2024-06-28 01:27:23,974 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:27:23" (2/2) ... [2024-06-28 01:27:23,975 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee65677 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:27:23, skipping insertion in model container [2024-06-28 01:27:23,975 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:27:23" (2/2) ... [2024-06-28 01:27:23,975 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:27:24,084 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:27:24,085 INFO L97 edCorrectnessWitness]: Location invariant before [L828-L828] ((((((((((((((((((! multithreaded || x$r_buff1_thd1 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (y == 0 || y == 1)) [2024-06-28 01:27:24,085 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ((((((((((((((((((! multithreaded || x$r_buff1_thd1 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (y == 0 || y == 1)) [2024-06-28 01:27:24,086 INFO L97 edCorrectnessWitness]: Location invariant before [L831-L831] ((((((((((((((((((! multithreaded || x$r_buff1_thd1 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (y == 0 || y == 1)) [2024-06-28 01:27:24,086 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:27:24,086 INFO L106 edCorrectnessWitness]: ghost_update [L826-L826] multithreaded = 1; [2024-06-28 01:27:24,112 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:27:24,253 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix019_tso.oepc.i[949,962] [2024-06-28 01:27:24,389 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:27:24,400 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:27:24,429 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix019_tso.oepc.i[949,962] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:27:24,582 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:27:24,617 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:27:24,617 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:27:24 WrapperNode [2024-06-28 01:27:24,618 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:27:24,619 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:27:24,619 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:27:24,619 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:27:24,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:27:24" (1/1) ... [2024-06-28 01:27:24,655 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:27:24" (1/1) ... [2024-06-28 01:27:24,698 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 141 [2024-06-28 01:27:24,699 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:27:24,711 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:27:24,712 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:27:24,712 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:27:24,720 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:27:24" (1/1) ... [2024-06-28 01:27:24,721 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:27:24" (1/1) ... [2024-06-28 01:27:24,723 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:27:24" (1/1) ... [2024-06-28 01:27:24,736 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 01:27:24,737 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:27:24" (1/1) ... [2024-06-28 01:27:24,737 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:27:24" (1/1) ... [2024-06-28 01:27:24,745 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:27:24" (1/1) ... [2024-06-28 01:27:24,746 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:27:24" (1/1) ... [2024-06-28 01:27:24,753 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:27:24" (1/1) ... [2024-06-28 01:27:24,754 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:27:24" (1/1) ... [2024-06-28 01:27:24,757 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:27:24,758 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:27:24,758 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:27:24,758 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:27:24,758 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:27:24" (1/1) ... [2024-06-28 01:27:24,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:27:24,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:27:24,781 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:27:24,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:27:24,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:27:24,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:27:24,823 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:27:24,823 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:27:24,823 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:27:24,824 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:27:24,824 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:27:24,824 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:27:24,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:27:24,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:27:24,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:27:24,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:27:24,826 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:27:24,940 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:27:24,943 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:27:25,283 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:27:25,283 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:27:25,406 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:27:25,407 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:27:25,407 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:27:25 BoogieIcfgContainer [2024-06-28 01:27:25,407 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:27:25,409 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:27:25,409 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:27:25,411 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:27:25,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:27:23" (1/4) ... [2024-06-28 01:27:25,412 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10c7efea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:27:25, skipping insertion in model container [2024-06-28 01:27:25,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:27:23" (2/4) ... [2024-06-28 01:27:25,412 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10c7efea and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:27:25, skipping insertion in model container [2024-06-28 01:27:25,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:27:24" (3/4) ... [2024-06-28 01:27:25,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10c7efea and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:27:25, skipping insertion in model container [2024-06-28 01:27:25,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:27:25" (4/4) ... [2024-06-28 01:27:25,414 INFO L112 eAbstractionObserver]: Analyzing ICFG mix019_tso.oepc.i [2024-06-28 01:27:25,428 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:27:25,428 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:27:25,428 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:27:25,464 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:27:25,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 01:27:25,515 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-28 01:27:25,516 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:27:25,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 78 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-28 01:27:25,519 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 01:27:25,522 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-06-28 01:27:25,546 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:27:25,553 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;@384d20f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:27:25,554 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:27:25,558 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:27:25,558 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 01:27:25,558 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:27:25,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:25,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:27:25,559 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:25,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:25,565 INFO L85 PathProgramCache]: Analyzing trace with hash 357946730, now seen corresponding path program 1 times [2024-06-28 01:27:25,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:25,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101369125] [2024-06-28 01:27:25,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:25,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:26,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:26,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:26,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101369125] [2024-06-28 01:27:26,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101369125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:26,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:26,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:27:26,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284259254] [2024-06-28 01:27:26,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:26,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:27:26,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:26,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:27:26,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:27:26,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-06-28 01:27:26,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:26,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:26,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-06-28 01:27:26,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:27,265 INFO L124 PetriNetUnfolderBase]: 3625/5980 cut-off events. [2024-06-28 01:27:27,265 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-06-28 01:27:27,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11302 conditions, 5980 events. 3625/5980 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 38729 event pairs, 2990 based on Foata normal form. 181/5595 useless extension candidates. Maximal degree in co-relation 11290. Up to 5218 conditions per place. [2024-06-28 01:27:27,299 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 42 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-06-28 01:27:27,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 227 flow [2024-06-28 01:27:27,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:27:27,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:27:27,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-06-28 01:27:27,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6879432624113475 [2024-06-28 01:27:27,311 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 97 transitions. [2024-06-28 01:27:27,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 227 flow [2024-06-28 01:27:27,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 59 transitions, 222 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:27:27,319 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 129 flow [2024-06-28 01:27:27,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-06-28 01:27:27,333 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-28 01:27:27,333 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 129 flow [2024-06-28 01:27:27,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:27,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:27,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:27,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:27:27,334 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:27,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:27,335 INFO L85 PathProgramCache]: Analyzing trace with hash 389796337, now seen corresponding path program 1 times [2024-06-28 01:27:27,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:27,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467057261] [2024-06-28 01:27:27,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:27,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:27,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:27,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:27,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:27,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467057261] [2024-06-28 01:27:27,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467057261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:27,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:27,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:27:27,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140565007] [2024-06-28 01:27:27,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:27,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:27:27,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:27,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:27:27,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:27:27,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:27:27,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:27,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:27,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:27:27,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:28,493 INFO L124 PetriNetUnfolderBase]: 4349/6519 cut-off events. [2024-06-28 01:27:28,493 INFO L125 PetriNetUnfolderBase]: For 833/833 co-relation queries the response was YES. [2024-06-28 01:27:28,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14357 conditions, 6519 events. 4349/6519 cut-off events. For 833/833 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 38184 event pairs, 2179 based on Foata normal form. 3/6210 useless extension candidates. Maximal degree in co-relation 14345. Up to 6202 conditions per place. [2024-06-28 01:27:28,522 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 55 selfloop transitions, 9 changer transitions 0/75 dead transitions. [2024-06-28 01:27:28,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 75 transitions, 327 flow [2024-06-28 01:27:28,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:27:28,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:27:28,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-06-28 01:27:28,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6542553191489362 [2024-06-28 01:27:28,526 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 129 flow. Second operand 4 states and 123 transitions. [2024-06-28 01:27:28,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 75 transitions, 327 flow [2024-06-28 01:27:28,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 75 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:27:28,528 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 175 flow [2024-06-28 01:27:28,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-06-28 01:27:28,529 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2024-06-28 01:27:28,529 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 175 flow [2024-06-28 01:27:28,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:28,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:28,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:28,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:27:28,532 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:28,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:28,538 INFO L85 PathProgramCache]: Analyzing trace with hash -801214551, now seen corresponding path program 1 times [2024-06-28 01:27:28,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:28,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730605080] [2024-06-28 01:27:28,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:28,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:29,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:29,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:29,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730605080] [2024-06-28 01:27:29,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730605080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:29,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:29,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:27:29,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573933278] [2024-06-28 01:27:29,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:29,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:27:29,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:29,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:27:29,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:27:29,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:27:29,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 175 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:29,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:29,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:27:29,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:29,770 INFO L124 PetriNetUnfolderBase]: 4333/7038 cut-off events. [2024-06-28 01:27:29,771 INFO L125 PetriNetUnfolderBase]: For 2521/2521 co-relation queries the response was YES. [2024-06-28 01:27:29,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16304 conditions, 7038 events. 4333/7038 cut-off events. For 2521/2521 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 45704 event pairs, 1996 based on Foata normal form. 6/6521 useless extension candidates. Maximal degree in co-relation 16290. Up to 6151 conditions per place. [2024-06-28 01:27:29,811 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 67 selfloop transitions, 16 changer transitions 0/94 dead transitions. [2024-06-28 01:27:29,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 94 transitions, 486 flow [2024-06-28 01:27:29,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:27:29,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:27:29,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-06-28 01:27:29,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6297872340425532 [2024-06-28 01:27:29,813 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 175 flow. Second operand 5 states and 148 transitions. [2024-06-28 01:27:29,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 94 transitions, 486 flow [2024-06-28 01:27:29,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 94 transitions, 450 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 01:27:29,817 INFO L231 Difference]: Finished difference. Result has 61 places, 66 transitions, 298 flow [2024-06-28 01:27:29,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=298, PETRI_PLACES=61, PETRI_TRANSITIONS=66} [2024-06-28 01:27:29,817 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2024-06-28 01:27:29,818 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 66 transitions, 298 flow [2024-06-28 01:27:29,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:29,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:29,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:29,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:27:29,835 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:29,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:29,835 INFO L85 PathProgramCache]: Analyzing trace with hash -812362965, now seen corresponding path program 1 times [2024-06-28 01:27:29,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:29,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803442703] [2024-06-28 01:27:29,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:29,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:29,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:29,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:29,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803442703] [2024-06-28 01:27:29,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803442703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:29,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:29,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:27:29,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772566832] [2024-06-28 01:27:29,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:29,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:27:29,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:29,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:27:29,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:27:29,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 47 [2024-06-28 01:27:29,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 66 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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 01:27:29,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:29,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 47 [2024-06-28 01:27:29,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:30,129 INFO L124 PetriNetUnfolderBase]: 1172/2484 cut-off events. [2024-06-28 01:27:30,130 INFO L125 PetriNetUnfolderBase]: For 1295/1449 co-relation queries the response was YES. [2024-06-28 01:27:30,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5395 conditions, 2484 events. 1172/2484 cut-off events. For 1295/1449 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 18888 event pairs, 379 based on Foata normal form. 21/2319 useless extension candidates. Maximal degree in co-relation 5378. Up to 1486 conditions per place. [2024-06-28 01:27:30,145 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 35 selfloop transitions, 7 changer transitions 0/73 dead transitions. [2024-06-28 01:27:30,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 73 transitions, 369 flow [2024-06-28 01:27:30,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:27:30,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:27:30,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-06-28 01:27:30,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7588652482269503 [2024-06-28 01:27:30,146 INFO L175 Difference]: Start difference. First operand has 61 places, 66 transitions, 298 flow. Second operand 3 states and 107 transitions. [2024-06-28 01:27:30,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 73 transitions, 369 flow [2024-06-28 01:27:30,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 73 transitions, 361 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-28 01:27:30,149 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 261 flow [2024-06-28 01:27:30,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2024-06-28 01:27:30,150 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 9 predicate places. [2024-06-28 01:27:30,150 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 261 flow [2024-06-28 01:27:30,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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 01:27:30,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:30,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:30,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:27:30,151 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:30,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:30,151 INFO L85 PathProgramCache]: Analyzing trace with hash -794875284, now seen corresponding path program 1 times [2024-06-28 01:27:30,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:30,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125109015] [2024-06-28 01:27:30,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:30,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:30,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:30,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:30,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125109015] [2024-06-28 01:27:30,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125109015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:30,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:30,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:27:30,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261072763] [2024-06-28 01:27:30,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:30,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:27:30,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:30,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:27:30,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:27:30,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:27:30,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 261 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:30,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:30,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:27:30,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:31,608 INFO L124 PetriNetUnfolderBase]: 3556/5752 cut-off events. [2024-06-28 01:27:31,608 INFO L125 PetriNetUnfolderBase]: For 5485/5485 co-relation queries the response was YES. [2024-06-28 01:27:31,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14459 conditions, 5752 events. 3556/5752 cut-off events. For 5485/5485 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 35177 event pairs, 1702 based on Foata normal form. 6/5576 useless extension candidates. Maximal degree in co-relation 14440. Up to 5018 conditions per place. [2024-06-28 01:27:31,629 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 69 selfloop transitions, 16 changer transitions 1/97 dead transitions. [2024-06-28 01:27:31,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 97 transitions, 531 flow [2024-06-28 01:27:31,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:27:31,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:27:31,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 167 transitions. [2024-06-28 01:27:31,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5921985815602837 [2024-06-28 01:27:31,631 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 261 flow. Second operand 6 states and 167 transitions. [2024-06-28 01:27:31,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 97 transitions, 531 flow [2024-06-28 01:27:31,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 97 transitions, 515 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:27:31,635 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 303 flow [2024-06-28 01:27:31,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=303, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2024-06-28 01:27:31,636 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 12 predicate places. [2024-06-28 01:27:31,636 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 303 flow [2024-06-28 01:27:31,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:31,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:31,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:31,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:27:31,637 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:31,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:31,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1002444529, now seen corresponding path program 1 times [2024-06-28 01:27:31,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:31,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476542658] [2024-06-28 01:27:31,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:31,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:31,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:32,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:32,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:32,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476542658] [2024-06-28 01:27:32,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476542658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:32,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:32,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:27:32,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930253515] [2024-06-28 01:27:32,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:32,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:27:32,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:32,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:27:32,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:27:32,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:27:32,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 303 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:32,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:32,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:27:32,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:32,787 INFO L124 PetriNetUnfolderBase]: 2957/5076 cut-off events. [2024-06-28 01:27:32,787 INFO L125 PetriNetUnfolderBase]: For 5769/5769 co-relation queries the response was YES. [2024-06-28 01:27:32,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13126 conditions, 5076 events. 2957/5076 cut-off events. For 5769/5769 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 32580 event pairs, 1511 based on Foata normal form. 2/4887 useless extension candidates. Maximal degree in co-relation 13105. Up to 4259 conditions per place. [2024-06-28 01:27:32,813 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 67 selfloop transitions, 9 changer transitions 0/86 dead transitions. [2024-06-28 01:27:32,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 86 transitions, 549 flow [2024-06-28 01:27:32,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:27:32,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:27:32,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-06-28 01:27:32,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5191489361702127 [2024-06-28 01:27:32,815 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 303 flow. Second operand 5 states and 122 transitions. [2024-06-28 01:27:32,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 86 transitions, 549 flow [2024-06-28 01:27:32,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 86 transitions, 501 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 01:27:32,820 INFO L231 Difference]: Finished difference. Result has 66 places, 68 transitions, 348 flow [2024-06-28 01:27:32,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=348, PETRI_PLACES=66, PETRI_TRANSITIONS=68} [2024-06-28 01:27:32,823 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 13 predicate places. [2024-06-28 01:27:32,823 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 68 transitions, 348 flow [2024-06-28 01:27:32,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:32,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:32,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:32,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:27:32,824 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:32,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:32,825 INFO L85 PathProgramCache]: Analyzing trace with hash 2043154662, now seen corresponding path program 1 times [2024-06-28 01:27:32,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:32,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442376669] [2024-06-28 01:27:32,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:32,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:33,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:33,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:33,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442376669] [2024-06-28 01:27:33,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442376669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:33,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:33,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:27:33,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112779168] [2024-06-28 01:27:33,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:33,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:27:33,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:33,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:27:33,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:27:33,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:27:33,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 68 transitions, 348 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:33,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:33,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:27:33,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:34,231 INFO L124 PetriNetUnfolderBase]: 3585/5886 cut-off events. [2024-06-28 01:27:34,232 INFO L125 PetriNetUnfolderBase]: For 9042/9042 co-relation queries the response was YES. [2024-06-28 01:27:34,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16396 conditions, 5886 events. 3585/5886 cut-off events. For 9042/9042 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 36544 event pairs, 1816 based on Foata normal form. 2/5706 useless extension candidates. Maximal degree in co-relation 16372. Up to 5118 conditions per place. [2024-06-28 01:27:34,262 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 80 selfloop transitions, 13 changer transitions 0/102 dead transitions. [2024-06-28 01:27:34,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 102 transitions, 650 flow [2024-06-28 01:27:34,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:27:34,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:27:34,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-28 01:27:34,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070921985815603 [2024-06-28 01:27:34,264 INFO L175 Difference]: Start difference. First operand has 66 places, 68 transitions, 348 flow. Second operand 6 states and 143 transitions. [2024-06-28 01:27:34,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 102 transitions, 650 flow [2024-06-28 01:27:34,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 102 transitions, 633 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 01:27:34,270 INFO L231 Difference]: Finished difference. Result has 71 places, 75 transitions, 430 flow [2024-06-28 01:27:34,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=430, PETRI_PLACES=71, PETRI_TRANSITIONS=75} [2024-06-28 01:27:34,271 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 18 predicate places. [2024-06-28 01:27:34,271 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 75 transitions, 430 flow [2024-06-28 01:27:34,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:34,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:34,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:34,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:27:34,272 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:34,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:34,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1276571472, now seen corresponding path program 2 times [2024-06-28 01:27:34,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:34,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462740564] [2024-06-28 01:27:34,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:34,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:34,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:34,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:34,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462740564] [2024-06-28 01:27:34,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462740564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:34,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:34,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:27:34,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49855184] [2024-06-28 01:27:34,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:34,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:27:34,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:34,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:27:34,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:27:34,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:27:34,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 75 transitions, 430 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:34,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:34,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:27:34,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:35,484 INFO L124 PetriNetUnfolderBase]: 3588/5924 cut-off events. [2024-06-28 01:27:35,484 INFO L125 PetriNetUnfolderBase]: For 12548/12568 co-relation queries the response was YES. [2024-06-28 01:27:35,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17618 conditions, 5924 events. 3588/5924 cut-off events. For 12548/12568 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 37095 event pairs, 1719 based on Foata normal form. 18/5759 useless extension candidates. Maximal degree in co-relation 17591. Up to 5087 conditions per place. [2024-06-28 01:27:35,572 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 78 selfloop transitions, 18 changer transitions 0/105 dead transitions. [2024-06-28 01:27:35,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 105 transitions, 726 flow [2024-06-28 01:27:35,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:27:35,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:27:35,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-28 01:27:35,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-28 01:27:35,574 INFO L175 Difference]: Start difference. First operand has 71 places, 75 transitions, 430 flow. Second operand 6 states and 144 transitions. [2024-06-28 01:27:35,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 105 transitions, 726 flow [2024-06-28 01:27:35,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 105 transitions, 695 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 01:27:35,582 INFO L231 Difference]: Finished difference. Result has 74 places, 78 transitions, 475 flow [2024-06-28 01:27:35,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=475, PETRI_PLACES=74, PETRI_TRANSITIONS=78} [2024-06-28 01:27:35,584 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 21 predicate places. [2024-06-28 01:27:35,584 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 78 transitions, 475 flow [2024-06-28 01:27:35,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:35,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:35,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:35,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:27:35,585 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:35,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:35,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1276580400, now seen corresponding path program 1 times [2024-06-28 01:27:35,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:35,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675077736] [2024-06-28 01:27:35,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:35,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:36,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:36,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:36,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675077736] [2024-06-28 01:27:36,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675077736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:36,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:36,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:27:36,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394867910] [2024-06-28 01:27:36,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:36,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:27:36,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:36,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:27:36,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:27:36,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:27:36,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 78 transitions, 475 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 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 01:27:36,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:36,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:27:36,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:37,238 INFO L124 PetriNetUnfolderBase]: 3659/6125 cut-off events. [2024-06-28 01:27:37,238 INFO L125 PetriNetUnfolderBase]: For 16807/16807 co-relation queries the response was YES. [2024-06-28 01:27:37,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18979 conditions, 6125 events. 3659/6125 cut-off events. For 16807/16807 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 38998 event pairs, 2320 based on Foata normal form. 2/5880 useless extension candidates. Maximal degree in co-relation 18951. Up to 5214 conditions per place. [2024-06-28 01:27:37,265 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 89 selfloop transitions, 28 changer transitions 0/126 dead transitions. [2024-06-28 01:27:37,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 126 transitions, 937 flow [2024-06-28 01:27:37,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:27:37,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:27:37,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-06-28 01:27:37,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47074468085106386 [2024-06-28 01:27:37,267 INFO L175 Difference]: Start difference. First operand has 74 places, 78 transitions, 475 flow. Second operand 8 states and 177 transitions. [2024-06-28 01:27:37,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 126 transitions, 937 flow [2024-06-28 01:27:37,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 126 transitions, 879 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 01:27:37,276 INFO L231 Difference]: Finished difference. Result has 81 places, 97 transitions, 670 flow [2024-06-28 01:27:37,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=670, PETRI_PLACES=81, PETRI_TRANSITIONS=97} [2024-06-28 01:27:37,277 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 28 predicate places. [2024-06-28 01:27:37,277 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 97 transitions, 670 flow [2024-06-28 01:27:37,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 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 01:27:37,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:37,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:37,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:27:37,281 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:37,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:37,281 INFO L85 PathProgramCache]: Analyzing trace with hash -948355922, now seen corresponding path program 1 times [2024-06-28 01:27:37,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:37,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277766785] [2024-06-28 01:27:37,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:37,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:37,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:37,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:37,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277766785] [2024-06-28 01:27:37,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277766785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:37,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:37,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:27:37,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314910740] [2024-06-28 01:27:37,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:37,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:27:37,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:37,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:27:37,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:27:37,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:27:37,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 97 transitions, 670 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 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 01:27:37,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:37,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:27:37,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:38,869 INFO L124 PetriNetUnfolderBase]: 4301/7041 cut-off events. [2024-06-28 01:27:38,869 INFO L125 PetriNetUnfolderBase]: For 25527/25548 co-relation queries the response was YES. [2024-06-28 01:27:38,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24085 conditions, 7041 events. 4301/7041 cut-off events. For 25527/25548 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 44598 event pairs, 1908 based on Foata normal form. 25/6846 useless extension candidates. Maximal degree in co-relation 24053. Up to 6040 conditions per place. [2024-06-28 01:27:38,912 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 106 selfloop transitions, 37 changer transitions 0/153 dead transitions. [2024-06-28 01:27:38,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 153 transitions, 1153 flow [2024-06-28 01:27:38,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:27:38,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:27:38,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 01:27:38,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-28 01:27:38,914 INFO L175 Difference]: Start difference. First operand has 81 places, 97 transitions, 670 flow. Second operand 8 states and 196 transitions. [2024-06-28 01:27:38,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 153 transitions, 1153 flow [2024-06-28 01:27:38,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 153 transitions, 1076 flow, removed 33 selfloop flow, removed 2 redundant places. [2024-06-28 01:27:38,937 INFO L231 Difference]: Finished difference. Result has 89 places, 113 transitions, 804 flow [2024-06-28 01:27:38,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=804, PETRI_PLACES=89, PETRI_TRANSITIONS=113} [2024-06-28 01:27:38,939 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 36 predicate places. [2024-06-28 01:27:38,939 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 113 transitions, 804 flow [2024-06-28 01:27:38,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 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 01:27:38,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:38,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:38,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:27:38,940 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:38,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:38,940 INFO L85 PathProgramCache]: Analyzing trace with hash 102969588, now seen corresponding path program 2 times [2024-06-28 01:27:38,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:38,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532271853] [2024-06-28 01:27:38,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:38,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:39,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:39,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:39,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532271853] [2024-06-28 01:27:39,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532271853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:39,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:39,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:27:39,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095581779] [2024-06-28 01:27:39,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:39,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:27:39,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:39,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:27:39,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:27:39,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:27:39,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 113 transitions, 804 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 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 01:27:39,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:39,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:27:39,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:40,730 INFO L124 PetriNetUnfolderBase]: 4489/7293 cut-off events. [2024-06-28 01:27:40,731 INFO L125 PetriNetUnfolderBase]: For 36320/36347 co-relation queries the response was YES. [2024-06-28 01:27:40,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28499 conditions, 7293 events. 4489/7293 cut-off events. For 36320/36347 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 45810 event pairs, 1872 based on Foata normal form. 19/7087 useless extension candidates. Maximal degree in co-relation 28463. Up to 6229 conditions per place. [2024-06-28 01:27:40,790 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 118 selfloop transitions, 58 changer transitions 0/186 dead transitions. [2024-06-28 01:27:40,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 186 transitions, 1610 flow [2024-06-28 01:27:40,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:27:40,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:27:40,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 01:27:40,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-28 01:27:40,794 INFO L175 Difference]: Start difference. First operand has 89 places, 113 transitions, 804 flow. Second operand 8 states and 197 transitions. [2024-06-28 01:27:40,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 186 transitions, 1610 flow [2024-06-28 01:27:40,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 186 transitions, 1475 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-28 01:27:40,833 INFO L231 Difference]: Finished difference. Result has 97 places, 146 transitions, 1196 flow [2024-06-28 01:27:40,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1196, PETRI_PLACES=97, PETRI_TRANSITIONS=146} [2024-06-28 01:27:40,833 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 44 predicate places. [2024-06-28 01:27:40,834 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 146 transitions, 1196 flow [2024-06-28 01:27:40,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 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 01:27:40,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:40,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:40,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:27:40,834 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:40,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:40,835 INFO L85 PathProgramCache]: Analyzing trace with hash 127221198, now seen corresponding path program 3 times [2024-06-28 01:27:40,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:40,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239673082] [2024-06-28 01:27:40,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:40,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:40,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:41,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:41,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:41,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239673082] [2024-06-28 01:27:41,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239673082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:41,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:41,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:27:41,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420976651] [2024-06-28 01:27:41,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:41,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:27:41,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:41,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:27:41,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:27:41,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:27:41,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 146 transitions, 1196 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 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 01:27:41,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:41,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:27:41,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:42,473 INFO L124 PetriNetUnfolderBase]: 4670/7576 cut-off events. [2024-06-28 01:27:42,474 INFO L125 PetriNetUnfolderBase]: For 45729/45748 co-relation queries the response was YES. [2024-06-28 01:27:42,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31680 conditions, 7576 events. 4670/7576 cut-off events. For 45729/45748 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 47474 event pairs, 1670 based on Foata normal form. 27/7382 useless extension candidates. Maximal degree in co-relation 31640. Up to 6232 conditions per place. [2024-06-28 01:27:42,525 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 129 selfloop transitions, 65 changer transitions 0/204 dead transitions. [2024-06-28 01:27:42,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 204 transitions, 1952 flow [2024-06-28 01:27:42,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:27:42,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:27:42,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 01:27:42,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372340425531915 [2024-06-28 01:27:42,527 INFO L175 Difference]: Start difference. First operand has 97 places, 146 transitions, 1196 flow. Second operand 8 states and 202 transitions. [2024-06-28 01:27:42,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 204 transitions, 1952 flow [2024-06-28 01:27:42,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 204 transitions, 1867 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 01:27:42,564 INFO L231 Difference]: Finished difference. Result has 103 places, 158 transitions, 1415 flow [2024-06-28 01:27:42,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1111, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1415, PETRI_PLACES=103, PETRI_TRANSITIONS=158} [2024-06-28 01:27:42,565 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 50 predicate places. [2024-06-28 01:27:42,565 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 158 transitions, 1415 flow [2024-06-28 01:27:42,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 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 01:27:42,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:42,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:42,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:27:42,566 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:42,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:42,566 INFO L85 PathProgramCache]: Analyzing trace with hash 740836718, now seen corresponding path program 4 times [2024-06-28 01:27:42,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:42,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424901064] [2024-06-28 01:27:42,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:42,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:43,142 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 01:27:43,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:43,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424901064] [2024-06-28 01:27:43,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424901064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:43,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:43,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:27:43,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178214040] [2024-06-28 01:27:43,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:43,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:27:43,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:43,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:27:43,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:27:43,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:27:43,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 158 transitions, 1415 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 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 01:27:43,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:43,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:27:43,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:44,152 INFO L124 PetriNetUnfolderBase]: 4736/7699 cut-off events. [2024-06-28 01:27:44,153 INFO L125 PetriNetUnfolderBase]: For 58767/58808 co-relation queries the response was YES. [2024-06-28 01:27:44,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34736 conditions, 7699 events. 4736/7699 cut-off events. For 58767/58808 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 48614 event pairs, 1628 based on Foata normal form. 24/7494 useless extension candidates. Maximal degree in co-relation 34694. Up to 6513 conditions per place. [2024-06-28 01:27:44,211 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 120 selfloop transitions, 66 changer transitions 0/196 dead transitions. [2024-06-28 01:27:44,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 196 transitions, 1989 flow [2024-06-28 01:27:44,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:27:44,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:27:44,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 01:27:44,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258358662613982 [2024-06-28 01:27:44,214 INFO L175 Difference]: Start difference. First operand has 103 places, 158 transitions, 1415 flow. Second operand 7 states and 173 transitions. [2024-06-28 01:27:44,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 196 transitions, 1989 flow [2024-06-28 01:27:44,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 196 transitions, 1841 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 01:27:44,332 INFO L231 Difference]: Finished difference. Result has 105 places, 162 transitions, 1495 flow [2024-06-28 01:27:44,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1269, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1495, PETRI_PLACES=105, PETRI_TRANSITIONS=162} [2024-06-28 01:27:44,333 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 52 predicate places. [2024-06-28 01:27:44,333 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 162 transitions, 1495 flow [2024-06-28 01:27:44,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 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 01:27:44,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:44,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:44,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:27:44,334 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:44,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:44,335 INFO L85 PathProgramCache]: Analyzing trace with hash 740957618, now seen corresponding path program 5 times [2024-06-28 01:27:44,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:44,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457511469] [2024-06-28 01:27:44,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:44,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:44,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:44,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:44,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457511469] [2024-06-28 01:27:44,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457511469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:44,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:44,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:27:44,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791431424] [2024-06-28 01:27:44,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:44,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:27:44,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:44,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:27:44,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:27:45,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:27:45,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 162 transitions, 1495 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 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 01:27:45,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:45,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:27:45,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:45,990 INFO L124 PetriNetUnfolderBase]: 4950/8002 cut-off events. [2024-06-28 01:27:45,990 INFO L125 PetriNetUnfolderBase]: For 70421/70454 co-relation queries the response was YES. [2024-06-28 01:27:46,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38051 conditions, 8002 events. 4950/8002 cut-off events. For 70421/70454 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 50332 event pairs, 1560 based on Foata normal form. 41/7820 useless extension candidates. Maximal degree in co-relation 38008. Up to 6412 conditions per place. [2024-06-28 01:27:46,053 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 128 selfloop transitions, 74 changer transitions 0/212 dead transitions. [2024-06-28 01:27:46,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 212 transitions, 2279 flow [2024-06-28 01:27:46,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:27:46,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:27:46,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 01:27:46,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349544072948328 [2024-06-28 01:27:46,055 INFO L175 Difference]: Start difference. First operand has 105 places, 162 transitions, 1495 flow. Second operand 7 states and 176 transitions. [2024-06-28 01:27:46,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 212 transitions, 2279 flow [2024-06-28 01:27:46,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 212 transitions, 2135 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 01:27:46,131 INFO L231 Difference]: Finished difference. Result has 108 places, 174 transitions, 1729 flow [2024-06-28 01:27:46,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1351, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1729, PETRI_PLACES=108, PETRI_TRANSITIONS=174} [2024-06-28 01:27:46,131 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 55 predicate places. [2024-06-28 01:27:46,132 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 174 transitions, 1729 flow [2024-06-28 01:27:46,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 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 01:27:46,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:46,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:46,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:27:46,132 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:46,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:46,133 INFO L85 PathProgramCache]: Analyzing trace with hash 919011698, now seen corresponding path program 6 times [2024-06-28 01:27:46,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:46,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195674393] [2024-06-28 01:27:46,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:46,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:46,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:46,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:46,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195674393] [2024-06-28 01:27:46,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195674393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:46,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:46,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:27:46,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856637496] [2024-06-28 01:27:46,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:46,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:27:46,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:46,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:27:46,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:27:46,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:27:46,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 174 transitions, 1729 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 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 01:27:46,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:46,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:27:46,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:47,966 INFO L124 PetriNetUnfolderBase]: 4980/8043 cut-off events. [2024-06-28 01:27:47,966 INFO L125 PetriNetUnfolderBase]: For 85771/85818 co-relation queries the response was YES. [2024-06-28 01:27:47,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40825 conditions, 8043 events. 4980/8043 cut-off events. For 85771/85818 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 50675 event pairs, 1344 based on Foata normal form. 31/7848 useless extension candidates. Maximal degree in co-relation 40780. Up to 6219 conditions per place. [2024-06-28 01:27:48,030 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 126 selfloop transitions, 95 changer transitions 0/231 dead transitions. [2024-06-28 01:27:48,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 231 transitions, 2697 flow [2024-06-28 01:27:48,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:27:48,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:27:48,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 01:27:48,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-28 01:27:48,033 INFO L175 Difference]: Start difference. First operand has 108 places, 174 transitions, 1729 flow. Second operand 8 states and 196 transitions. [2024-06-28 01:27:48,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 231 transitions, 2697 flow [2024-06-28 01:27:48,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 231 transitions, 2542 flow, removed 56 selfloop flow, removed 3 redundant places. [2024-06-28 01:27:48,112 INFO L231 Difference]: Finished difference. Result has 114 places, 187 transitions, 2002 flow [2024-06-28 01:27:48,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1607, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2002, PETRI_PLACES=114, PETRI_TRANSITIONS=187} [2024-06-28 01:27:48,112 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 61 predicate places. [2024-06-28 01:27:48,113 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 187 transitions, 2002 flow [2024-06-28 01:27:48,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 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 01:27:48,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:48,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:48,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:27:48,113 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:48,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:48,114 INFO L85 PathProgramCache]: Analyzing trace with hash 919288745, now seen corresponding path program 1 times [2024-06-28 01:27:48,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:48,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956920073] [2024-06-28 01:27:48,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:48,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:48,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:48,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:48,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956920073] [2024-06-28 01:27:48,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956920073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:48,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:48,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:27:48,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3955020] [2024-06-28 01:27:48,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:48,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:27:48,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:48,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:27:48,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:27:49,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:27:49,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 187 transitions, 2002 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:49,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:49,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:27:49,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:50,076 INFO L124 PetriNetUnfolderBase]: 4694/7634 cut-off events. [2024-06-28 01:27:50,076 INFO L125 PetriNetUnfolderBase]: For 72345/72345 co-relation queries the response was YES. [2024-06-28 01:27:50,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38068 conditions, 7634 events. 4694/7634 cut-off events. For 72345/72345 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 47243 event pairs, 2042 based on Foata normal form. 4/7385 useless extension candidates. Maximal degree in co-relation 38020. Up to 6617 conditions per place. [2024-06-28 01:27:50,142 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 188 selfloop transitions, 30 changer transitions 0/227 dead transitions. [2024-06-28 01:27:50,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 227 transitions, 2648 flow [2024-06-28 01:27:50,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:27:50,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:27:50,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-28 01:27:50,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973404255319149 [2024-06-28 01:27:50,144 INFO L175 Difference]: Start difference. First operand has 114 places, 187 transitions, 2002 flow. Second operand 8 states and 187 transitions. [2024-06-28 01:27:50,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 227 transitions, 2648 flow [2024-06-28 01:27:50,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 227 transitions, 2443 flow, removed 46 selfloop flow, removed 3 redundant places. [2024-06-28 01:27:50,308 INFO L231 Difference]: Finished difference. Result has 119 places, 190 transitions, 1923 flow [2024-06-28 01:27:50,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1801, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1923, PETRI_PLACES=119, PETRI_TRANSITIONS=190} [2024-06-28 01:27:50,308 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 66 predicate places. [2024-06-28 01:27:50,309 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 190 transitions, 1923 flow [2024-06-28 01:27:50,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:50,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:50,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:50,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:27:50,309 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:50,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:50,310 INFO L85 PathProgramCache]: Analyzing trace with hash -470666933, now seen corresponding path program 1 times [2024-06-28 01:27:50,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:50,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551883339] [2024-06-28 01:27:50,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:50,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:50,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:50,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:50,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:50,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551883339] [2024-06-28 01:27:50,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551883339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:50,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:50,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:27:50,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562260871] [2024-06-28 01:27:50,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:50,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:27:50,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:50,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:27:50,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:27:50,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:27:50,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 190 transitions, 1923 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 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 01:27:50,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:50,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:27:50,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:51,853 INFO L124 PetriNetUnfolderBase]: 5423/8632 cut-off events. [2024-06-28 01:27:51,854 INFO L125 PetriNetUnfolderBase]: For 77758/77758 co-relation queries the response was YES. [2024-06-28 01:27:51,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41139 conditions, 8632 events. 5423/8632 cut-off events. For 77758/77758 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 52704 event pairs, 2534 based on Foata normal form. 1/8410 useless extension candidates. Maximal degree in co-relation 41089. Up to 7695 conditions per place. [2024-06-28 01:27:51,933 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 185 selfloop transitions, 15 changer transitions 0/208 dead transitions. [2024-06-28 01:27:51,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 208 transitions, 2413 flow [2024-06-28 01:27:51,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:27:51,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:27:51,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-06-28 01:27:51,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765957446808511 [2024-06-28 01:27:51,935 INFO L175 Difference]: Start difference. First operand has 119 places, 190 transitions, 1923 flow. Second operand 5 states and 112 transitions. [2024-06-28 01:27:51,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 208 transitions, 2413 flow [2024-06-28 01:27:52,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 208 transitions, 2315 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 01:27:52,014 INFO L231 Difference]: Finished difference. Result has 118 places, 193 transitions, 1891 flow [2024-06-28 01:27:52,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1825, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1891, PETRI_PLACES=118, PETRI_TRANSITIONS=193} [2024-06-28 01:27:52,014 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 65 predicate places. [2024-06-28 01:27:52,014 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 193 transitions, 1891 flow [2024-06-28 01:27:52,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 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 01:27:52,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:52,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:52,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:27:52,015 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:52,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:52,016 INFO L85 PathProgramCache]: Analyzing trace with hash 602866959, now seen corresponding path program 1 times [2024-06-28 01:27:52,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:52,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498536033] [2024-06-28 01:27:52,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:52,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:52,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:52,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:52,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:52,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498536033] [2024-06-28 01:27:52,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498536033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:52,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:52,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:27:52,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044347754] [2024-06-28 01:27:52,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:52,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:27:52,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:52,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:27:52,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:27:52,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:27:52,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 193 transitions, 1891 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:52,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:52,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:27:52,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:53,910 INFO L124 PetriNetUnfolderBase]: 5432/8739 cut-off events. [2024-06-28 01:27:53,911 INFO L125 PetriNetUnfolderBase]: For 97445/97514 co-relation queries the response was YES. [2024-06-28 01:27:53,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44114 conditions, 8739 events. 5432/8739 cut-off events. For 97445/97514 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 56091 event pairs, 2068 based on Foata normal form. 25/8440 useless extension candidates. Maximal degree in co-relation 44063. Up to 7476 conditions per place. [2024-06-28 01:27:53,980 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 160 selfloop transitions, 82 changer transitions 0/253 dead transitions. [2024-06-28 01:27:53,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 253 transitions, 2770 flow [2024-06-28 01:27:53,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:27:53,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:27:53,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 01:27:53,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526595744680851 [2024-06-28 01:27:53,982 INFO L175 Difference]: Start difference. First operand has 118 places, 193 transitions, 1891 flow. Second operand 8 states and 198 transitions. [2024-06-28 01:27:53,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 253 transitions, 2770 flow [2024-06-28 01:27:54,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 253 transitions, 2736 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 01:27:54,069 INFO L231 Difference]: Finished difference. Result has 125 places, 215 transitions, 2367 flow [2024-06-28 01:27:54,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1857, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2367, PETRI_PLACES=125, PETRI_TRANSITIONS=215} [2024-06-28 01:27:54,070 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 72 predicate places. [2024-06-28 01:27:54,070 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 215 transitions, 2367 flow [2024-06-28 01:27:54,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:54,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:54,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:54,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:27:54,070 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:54,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:54,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1099338037, now seen corresponding path program 2 times [2024-06-28 01:27:54,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:54,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32642907] [2024-06-28 01:27:54,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:54,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:54,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:54,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:54,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32642907] [2024-06-28 01:27:54,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32642907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:54,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:54,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:27:54,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340606790] [2024-06-28 01:27:54,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:54,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:27:54,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:54,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:27:54,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:27:55,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:27:55,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 215 transitions, 2367 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:55,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:55,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:27:55,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:56,268 INFO L124 PetriNetUnfolderBase]: 5349/8630 cut-off events. [2024-06-28 01:27:56,268 INFO L125 PetriNetUnfolderBase]: For 107323/107380 co-relation queries the response was YES. [2024-06-28 01:27:56,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45900 conditions, 8630 events. 5349/8630 cut-off events. For 107323/107380 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 55083 event pairs, 1775 based on Foata normal form. 29/8367 useless extension candidates. Maximal degree in co-relation 45846. Up to 7335 conditions per place. [2024-06-28 01:27:56,345 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 176 selfloop transitions, 84 changer transitions 0/271 dead transitions. [2024-06-28 01:27:56,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 271 transitions, 3345 flow [2024-06-28 01:27:56,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:27:56,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:27:56,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 01:27:56,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526595744680851 [2024-06-28 01:27:56,347 INFO L175 Difference]: Start difference. First operand has 125 places, 215 transitions, 2367 flow. Second operand 8 states and 198 transitions. [2024-06-28 01:27:56,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 271 transitions, 3345 flow [2024-06-28 01:27:56,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 271 transitions, 3189 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-06-28 01:27:56,465 INFO L231 Difference]: Finished difference. Result has 130 places, 230 transitions, 2694 flow [2024-06-28 01:27:56,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2261, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2694, PETRI_PLACES=130, PETRI_TRANSITIONS=230} [2024-06-28 01:27:56,466 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 77 predicate places. [2024-06-28 01:27:56,466 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 230 transitions, 2694 flow [2024-06-28 01:27:56,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:56,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:56,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:56,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:27:56,468 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:56,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:56,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1099153463, now seen corresponding path program 1 times [2024-06-28 01:27:56,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:56,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73063202] [2024-06-28 01:27:56,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:56,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:57,287 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 01:27:57,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:57,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73063202] [2024-06-28 01:27:57,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73063202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:57,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:57,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:27:57,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685098050] [2024-06-28 01:27:57,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:57,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:27:57,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:57,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:27:57,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:27:57,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:27:57,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 230 transitions, 2694 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:57,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:57,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:27:57,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:58,757 INFO L124 PetriNetUnfolderBase]: 6065/9521 cut-off events. [2024-06-28 01:27:58,757 INFO L125 PetriNetUnfolderBase]: For 116868/116892 co-relation queries the response was YES. [2024-06-28 01:27:58,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49600 conditions, 9521 events. 6065/9521 cut-off events. For 116868/116892 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 58449 event pairs, 2463 based on Foata normal form. 14/9215 useless extension candidates. Maximal degree in co-relation 49545. Up to 8472 conditions per place. [2024-06-28 01:27:58,827 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 249 selfloop transitions, 35 changer transitions 0/293 dead transitions. [2024-06-28 01:27:58,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 293 transitions, 3686 flow [2024-06-28 01:27:58,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:27:58,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:27:58,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 206 transitions. [2024-06-28 01:27:58,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48699763593380613 [2024-06-28 01:27:58,831 INFO L175 Difference]: Start difference. First operand has 130 places, 230 transitions, 2694 flow. Second operand 9 states and 206 transitions. [2024-06-28 01:27:58,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 293 transitions, 3686 flow [2024-06-28 01:27:58,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 293 transitions, 3552 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 01:27:58,934 INFO L231 Difference]: Finished difference. Result has 137 places, 246 transitions, 2860 flow [2024-06-28 01:27:58,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2560, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2860, PETRI_PLACES=137, PETRI_TRANSITIONS=246} [2024-06-28 01:27:58,940 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 84 predicate places. [2024-06-28 01:27:58,940 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 246 transitions, 2860 flow [2024-06-28 01:27:58,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:58,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:58,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:58,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:27:58,941 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:58,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:58,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1491012399, now seen corresponding path program 3 times [2024-06-28 01:27:58,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:58,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253382507] [2024-06-28 01:27:58,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:58,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:59,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:59,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:59,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253382507] [2024-06-28 01:27:59,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253382507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:59,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:59,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:27:59,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274107748] [2024-06-28 01:27:59,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:59,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:27:59,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:59,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:27:59,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:27:59,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:27:59,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 246 transitions, 2860 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:59,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:59,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:27:59,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:01,148 INFO L124 PetriNetUnfolderBase]: 5447/8747 cut-off events. [2024-06-28 01:28:01,149 INFO L125 PetriNetUnfolderBase]: For 128588/128624 co-relation queries the response was YES. [2024-06-28 01:28:01,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48079 conditions, 8747 events. 5447/8747 cut-off events. For 128588/128624 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 55992 event pairs, 2018 based on Foata normal form. 18/8451 useless extension candidates. Maximal degree in co-relation 48021. Up to 7381 conditions per place. [2024-06-28 01:28:01,230 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 178 selfloop transitions, 96 changer transitions 0/286 dead transitions. [2024-06-28 01:28:01,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 286 transitions, 3707 flow [2024-06-28 01:28:01,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:28:01,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:28:01,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 01:28:01,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227963525835866 [2024-06-28 01:28:01,231 INFO L175 Difference]: Start difference. First operand has 137 places, 246 transitions, 2860 flow. Second operand 7 states and 172 transitions. [2024-06-28 01:28:01,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 286 transitions, 3707 flow [2024-06-28 01:28:01,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 286 transitions, 3599 flow, removed 45 selfloop flow, removed 3 redundant places. [2024-06-28 01:28:01,372 INFO L231 Difference]: Finished difference. Result has 141 places, 253 transitions, 3159 flow [2024-06-28 01:28:01,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2752, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3159, PETRI_PLACES=141, PETRI_TRANSITIONS=253} [2024-06-28 01:28:01,373 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 88 predicate places. [2024-06-28 01:28:01,373 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 253 transitions, 3159 flow [2024-06-28 01:28:01,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:01,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:01,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:01,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:28:01,374 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:01,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:01,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1494858383, now seen corresponding path program 2 times [2024-06-28 01:28:01,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:01,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133375686] [2024-06-28 01:28:01,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:01,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:02,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:02,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:02,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133375686] [2024-06-28 01:28:02,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133375686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:02,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:02,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:02,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824051559] [2024-06-28 01:28:02,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:02,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:02,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:02,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:02,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:02,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:28:02,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 253 transitions, 3159 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:02,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:02,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:28:02,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:03,861 INFO L124 PetriNetUnfolderBase]: 6112/9588 cut-off events. [2024-06-28 01:28:03,861 INFO L125 PetriNetUnfolderBase]: For 136235/136259 co-relation queries the response was YES. [2024-06-28 01:28:03,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52783 conditions, 9588 events. 6112/9588 cut-off events. For 136235/136259 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 58836 event pairs, 2405 based on Foata normal form. 14/9282 useless extension candidates. Maximal degree in co-relation 52723. Up to 8490 conditions per place. [2024-06-28 01:28:03,952 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 265 selfloop transitions, 55 changer transitions 0/329 dead transitions. [2024-06-28 01:28:03,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 329 transitions, 4496 flow [2024-06-28 01:28:03,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:28:03,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:28:03,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 196 transitions. [2024-06-28 01:28:03,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46335697399527187 [2024-06-28 01:28:03,954 INFO L175 Difference]: Start difference. First operand has 141 places, 253 transitions, 3159 flow. Second operand 9 states and 196 transitions. [2024-06-28 01:28:03,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 329 transitions, 4496 flow [2024-06-28 01:28:04,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 329 transitions, 4258 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-28 01:28:04,173 INFO L231 Difference]: Finished difference. Result has 147 places, 287 transitions, 3572 flow [2024-06-28 01:28:04,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2937, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3572, PETRI_PLACES=147, PETRI_TRANSITIONS=287} [2024-06-28 01:28:04,174 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 94 predicate places. [2024-06-28 01:28:04,174 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 287 transitions, 3572 flow [2024-06-28 01:28:04,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:04,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:04,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:04,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:28:04,175 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:04,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:04,175 INFO L85 PathProgramCache]: Analyzing trace with hash 43043449, now seen corresponding path program 3 times [2024-06-28 01:28:04,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:04,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960835208] [2024-06-28 01:28:04,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:04,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:05,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:05,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:05,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960835208] [2024-06-28 01:28:05,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960835208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:05,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:05,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:05,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780226838] [2024-06-28 01:28:05,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:05,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:05,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:05,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:05,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:05,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:28:05,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 287 transitions, 3572 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:05,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:05,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:28:05,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:06,451 INFO L124 PetriNetUnfolderBase]: 6141/9658 cut-off events. [2024-06-28 01:28:06,451 INFO L125 PetriNetUnfolderBase]: For 129684/129718 co-relation queries the response was YES. [2024-06-28 01:28:06,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53053 conditions, 9658 events. 6141/9658 cut-off events. For 129684/129718 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 59631 event pairs, 2330 based on Foata normal form. 24/9361 useless extension candidates. Maximal degree in co-relation 52990. Up to 8418 conditions per place. [2024-06-28 01:28:06,549 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 268 selfloop transitions, 71 changer transitions 0/348 dead transitions. [2024-06-28 01:28:06,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 348 transitions, 4697 flow [2024-06-28 01:28:06,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:06,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:06,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-28 01:28:06,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973404255319149 [2024-06-28 01:28:06,550 INFO L175 Difference]: Start difference. First operand has 147 places, 287 transitions, 3572 flow. Second operand 8 states and 187 transitions. [2024-06-28 01:28:06,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 348 transitions, 4697 flow [2024-06-28 01:28:06,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 348 transitions, 4544 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-28 01:28:06,741 INFO L231 Difference]: Finished difference. Result has 153 places, 300 transitions, 3756 flow [2024-06-28 01:28:06,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3419, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3756, PETRI_PLACES=153, PETRI_TRANSITIONS=300} [2024-06-28 01:28:06,742 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 100 predicate places. [2024-06-28 01:28:06,742 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 300 transitions, 3756 flow [2024-06-28 01:28:06,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:06,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:06,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:06,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:28:06,743 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:06,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:06,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1566828849, now seen corresponding path program 4 times [2024-06-28 01:28:06,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:06,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550703688] [2024-06-28 01:28:06,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:06,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:07,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:07,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:07,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550703688] [2024-06-28 01:28:07,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550703688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:07,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:07,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:07,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771538454] [2024-06-28 01:28:07,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:07,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:07,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:07,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:07,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:07,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:28:07,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 300 transitions, 3756 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:07,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:07,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:28:07,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:09,153 INFO L124 PetriNetUnfolderBase]: 6146/9645 cut-off events. [2024-06-28 01:28:09,153 INFO L125 PetriNetUnfolderBase]: For 141774/141808 co-relation queries the response was YES. [2024-06-28 01:28:09,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54754 conditions, 9645 events. 6146/9645 cut-off events. For 141774/141808 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 59362 event pairs, 2305 based on Foata normal form. 24/9354 useless extension candidates. Maximal degree in co-relation 54688. Up to 8327 conditions per place. [2024-06-28 01:28:09,234 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 255 selfloop transitions, 115 changer transitions 0/379 dead transitions. [2024-06-28 01:28:09,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 379 transitions, 5161 flow [2024-06-28 01:28:09,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:28:09,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:28:09,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-06-28 01:28:09,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2024-06-28 01:28:09,236 INFO L175 Difference]: Start difference. First operand has 153 places, 300 transitions, 3756 flow. Second operand 9 states and 210 transitions. [2024-06-28 01:28:09,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 379 transitions, 5161 flow [2024-06-28 01:28:09,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 379 transitions, 4929 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-28 01:28:09,437 INFO L231 Difference]: Finished difference. Result has 160 places, 322 transitions, 4191 flow [2024-06-28 01:28:09,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3536, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4191, PETRI_PLACES=160, PETRI_TRANSITIONS=322} [2024-06-28 01:28:09,437 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 107 predicate places. [2024-06-28 01:28:09,437 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 322 transitions, 4191 flow [2024-06-28 01:28:09,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:09,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:09,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:09,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:28:09,438 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:09,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:09,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1672703882, now seen corresponding path program 1 times [2024-06-28 01:28:09,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:09,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837310621] [2024-06-28 01:28:09,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:09,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:09,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:09,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:09,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837310621] [2024-06-28 01:28:09,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837310621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:09,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:09,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:28:09,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894335] [2024-06-28 01:28:09,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:09,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:28:09,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:09,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:28:09,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:28:09,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:28:09,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 322 transitions, 4191 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:09,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:09,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:28:09,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:11,310 INFO L124 PetriNetUnfolderBase]: 5671/8958 cut-off events. [2024-06-28 01:28:11,311 INFO L125 PetriNetUnfolderBase]: For 142072/142072 co-relation queries the response was YES. [2024-06-28 01:28:11,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52995 conditions, 8958 events. 5671/8958 cut-off events. For 142072/142072 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 54433 event pairs, 2427 based on Foata normal form. 2/8730 useless extension candidates. Maximal degree in co-relation 52925. Up to 8003 conditions per place. [2024-06-28 01:28:11,397 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 321 selfloop transitions, 18 changer transitions 0/347 dead transitions. [2024-06-28 01:28:11,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 347 transitions, 5021 flow [2024-06-28 01:28:11,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:28:11,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:28:11,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-28 01:28:11,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716312056737589 [2024-06-28 01:28:11,398 INFO L175 Difference]: Start difference. First operand has 160 places, 322 transitions, 4191 flow. Second operand 6 states and 133 transitions. [2024-06-28 01:28:11,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 347 transitions, 5021 flow [2024-06-28 01:28:11,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 347 transitions, 4872 flow, removed 65 selfloop flow, removed 2 redundant places. [2024-06-28 01:28:11,615 INFO L231 Difference]: Finished difference. Result has 164 places, 325 transitions, 4118 flow [2024-06-28 01:28:11,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4042, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4118, PETRI_PLACES=164, PETRI_TRANSITIONS=325} [2024-06-28 01:28:11,616 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 111 predicate places. [2024-06-28 01:28:11,616 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 325 transitions, 4118 flow [2024-06-28 01:28:11,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:11,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:11,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:11,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:28:11,617 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:11,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:11,617 INFO L85 PathProgramCache]: Analyzing trace with hash 64057463, now seen corresponding path program 1 times [2024-06-28 01:28:11,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:11,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368645665] [2024-06-28 01:28:11,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:11,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:12,224 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 01:28:12,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:12,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368645665] [2024-06-28 01:28:12,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368645665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:12,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:12,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:28:12,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397396714] [2024-06-28 01:28:12,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:12,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:28:12,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:12,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:28:12,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:28:12,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:28:12,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 325 transitions, 4118 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:12,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:12,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:28:12,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:13,779 INFO L124 PetriNetUnfolderBase]: 5737/9163 cut-off events. [2024-06-28 01:28:13,780 INFO L125 PetriNetUnfolderBase]: For 164992/165065 co-relation queries the response was YES. [2024-06-28 01:28:13,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55446 conditions, 9163 events. 5737/9163 cut-off events. For 164992/165065 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 58560 event pairs, 1647 based on Foata normal form. 45/8887 useless extension candidates. Maximal degree in co-relation 55374. Up to 7804 conditions per place. [2024-06-28 01:28:13,884 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 288 selfloop transitions, 78 changer transitions 0/383 dead transitions. [2024-06-28 01:28:13,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 383 transitions, 5176 flow [2024-06-28 01:28:13,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:28:13,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:28:13,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-28 01:28:13,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130023640661938 [2024-06-28 01:28:13,885 INFO L175 Difference]: Start difference. First operand has 164 places, 325 transitions, 4118 flow. Second operand 9 states and 217 transitions. [2024-06-28 01:28:13,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 383 transitions, 5176 flow [2024-06-28 01:28:14,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 383 transitions, 5128 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 01:28:14,138 INFO L231 Difference]: Finished difference. Result has 171 places, 337 transitions, 4413 flow [2024-06-28 01:28:14,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4070, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4413, PETRI_PLACES=171, PETRI_TRANSITIONS=337} [2024-06-28 01:28:14,139 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 118 predicate places. [2024-06-28 01:28:14,139 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 337 transitions, 4413 flow [2024-06-28 01:28:14,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:14,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:14,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:14,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:28:14,139 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:14,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:14,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1507128807, now seen corresponding path program 2 times [2024-06-28 01:28:14,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:14,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115390274] [2024-06-28 01:28:14,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:14,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:14,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:14,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:14,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115390274] [2024-06-28 01:28:14,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115390274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:14,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:14,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:28:14,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467705414] [2024-06-28 01:28:14,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:14,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:28:14,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:14,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:28:14,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:28:15,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:28:15,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 337 transitions, 4413 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:15,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:15,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:28:15,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:16,514 INFO L124 PetriNetUnfolderBase]: 5827/9175 cut-off events. [2024-06-28 01:28:16,515 INFO L125 PetriNetUnfolderBase]: For 189550/189621 co-relation queries the response was YES. [2024-06-28 01:28:16,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58723 conditions, 9175 events. 5827/9175 cut-off events. For 189550/189621 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 57851 event pairs, 1972 based on Foata normal form. 45/8947 useless extension candidates. Maximal degree in co-relation 58648. Up to 7947 conditions per place. [2024-06-28 01:28:16,617 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 286 selfloop transitions, 93 changer transitions 0/396 dead transitions. [2024-06-28 01:28:16,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 396 transitions, 5625 flow [2024-06-28 01:28:16,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:28:16,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:28:16,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-28 01:28:16,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5200945626477541 [2024-06-28 01:28:16,618 INFO L175 Difference]: Start difference. First operand has 171 places, 337 transitions, 4413 flow. Second operand 9 states and 220 transitions. [2024-06-28 01:28:16,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 396 transitions, 5625 flow [2024-06-28 01:28:16,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 396 transitions, 5341 flow, removed 103 selfloop flow, removed 5 redundant places. [2024-06-28 01:28:16,915 INFO L231 Difference]: Finished difference. Result has 176 places, 349 transitions, 4597 flow [2024-06-28 01:28:16,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4229, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4597, PETRI_PLACES=176, PETRI_TRANSITIONS=349} [2024-06-28 01:28:16,915 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 123 predicate places. [2024-06-28 01:28:16,915 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 349 transitions, 4597 flow [2024-06-28 01:28:16,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:16,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:16,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:16,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:28:16,916 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:16,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:16,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1509008337, now seen corresponding path program 3 times [2024-06-28 01:28:16,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:16,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784248911] [2024-06-28 01:28:16,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:16,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:17,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:17,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:17,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784248911] [2024-06-28 01:28:17,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784248911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:17,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:17,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:28:17,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7055898] [2024-06-28 01:28:17,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:17,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:28:17,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:17,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:28:17,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:28:17,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:28:17,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 349 transitions, 4597 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:17,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:17,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:28:17,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:19,388 INFO L124 PetriNetUnfolderBase]: 5844/9322 cut-off events. [2024-06-28 01:28:19,389 INFO L125 PetriNetUnfolderBase]: For 199991/200060 co-relation queries the response was YES. [2024-06-28 01:28:19,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59805 conditions, 9322 events. 5844/9322 cut-off events. For 199991/200060 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 59490 event pairs, 1965 based on Foata normal form. 41/9057 useless extension candidates. Maximal degree in co-relation 59728. Up to 7960 conditions per place. [2024-06-28 01:28:19,481 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 281 selfloop transitions, 100 changer transitions 0/398 dead transitions. [2024-06-28 01:28:19,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 398 transitions, 5677 flow [2024-06-28 01:28:19,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:28:19,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:28:19,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-28 01:28:19,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224586288416075 [2024-06-28 01:28:19,482 INFO L175 Difference]: Start difference. First operand has 176 places, 349 transitions, 4597 flow. Second operand 9 states and 221 transitions. [2024-06-28 01:28:19,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 398 transitions, 5677 flow [2024-06-28 01:28:19,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 398 transitions, 5462 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-28 01:28:19,799 INFO L231 Difference]: Finished difference. Result has 180 places, 352 transitions, 4685 flow [2024-06-28 01:28:19,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4382, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4685, PETRI_PLACES=180, PETRI_TRANSITIONS=352} [2024-06-28 01:28:19,800 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 127 predicate places. [2024-06-28 01:28:19,800 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 352 transitions, 4685 flow [2024-06-28 01:28:19,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:19,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:19,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:19,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:28:19,801 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:19,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:19,801 INFO L85 PathProgramCache]: Analyzing trace with hash 801554231, now seen corresponding path program 1 times [2024-06-28 01:28:19,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:19,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491166975] [2024-06-28 01:28:19,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:19,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:20,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:20,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:20,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491166975] [2024-06-28 01:28:20,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491166975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:20,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:20,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:28:20,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483204414] [2024-06-28 01:28:20,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:20,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:28:20,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:20,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:28:20,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:28:20,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:28:20,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 352 transitions, 4685 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:20,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:20,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:28:20,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:22,508 INFO L124 PetriNetUnfolderBase]: 6463/10136 cut-off events. [2024-06-28 01:28:22,509 INFO L125 PetriNetUnfolderBase]: For 210906/210940 co-relation queries the response was YES. [2024-06-28 01:28:22,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64114 conditions, 10136 events. 6463/10136 cut-off events. For 210906/210940 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 62530 event pairs, 1863 based on Foata normal form. 32/9868 useless extension candidates. Maximal degree in co-relation 64036. Up to 8796 conditions per place. [2024-06-28 01:28:22,602 INFO L140 encePairwiseOnDemand]: 29/47 looper letters, 311 selfloop transitions, 97 changer transitions 0/417 dead transitions. [2024-06-28 01:28:22,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 417 transitions, 6003 flow [2024-06-28 01:28:22,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:28:22,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:28:22,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 235 transitions. [2024-06-28 01:28:22,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:28:22,604 INFO L175 Difference]: Start difference. First operand has 180 places, 352 transitions, 4685 flow. Second operand 10 states and 235 transitions. [2024-06-28 01:28:22,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 417 transitions, 6003 flow [2024-06-28 01:28:22,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 417 transitions, 5720 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-28 01:28:22,924 INFO L231 Difference]: Finished difference. Result has 184 places, 363 transitions, 4837 flow [2024-06-28 01:28:22,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4412, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4837, PETRI_PLACES=184, PETRI_TRANSITIONS=363} [2024-06-28 01:28:22,926 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 131 predicate places. [2024-06-28 01:28:22,926 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 363 transitions, 4837 flow [2024-06-28 01:28:22,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:22,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:22,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:22,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:28:22,926 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:22,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:22,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1768303593, now seen corresponding path program 4 times [2024-06-28 01:28:22,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:22,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166418978] [2024-06-28 01:28:22,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:22,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:23,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:23,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:23,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166418978] [2024-06-28 01:28:23,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166418978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:23,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:23,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:28:23,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789738278] [2024-06-28 01:28:23,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:23,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:28:23,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:23,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:28:23,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:28:23,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:28:23,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 363 transitions, 4837 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:23,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:23,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:28:23,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:25,780 INFO L124 PetriNetUnfolderBase]: 6069/9711 cut-off events. [2024-06-28 01:28:25,781 INFO L125 PetriNetUnfolderBase]: For 219667/219724 co-relation queries the response was YES. [2024-06-28 01:28:25,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62992 conditions, 9711 events. 6069/9711 cut-off events. For 219667/219724 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 62141 event pairs, 1778 based on Foata normal form. 53/9446 useless extension candidates. Maximal degree in co-relation 62912. Up to 8237 conditions per place. [2024-06-28 01:28:25,886 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 323 selfloop transitions, 96 changer transitions 0/437 dead transitions. [2024-06-28 01:28:25,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 437 transitions, 6181 flow [2024-06-28 01:28:25,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:28:25,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:28:25,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-28 01:28:25,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224586288416075 [2024-06-28 01:28:25,890 INFO L175 Difference]: Start difference. First operand has 184 places, 363 transitions, 4837 flow. Second operand 9 states and 221 transitions. [2024-06-28 01:28:25,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 437 transitions, 6181 flow [2024-06-28 01:28:26,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 437 transitions, 5958 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 01:28:26,208 INFO L231 Difference]: Finished difference. Result has 188 places, 388 transitions, 5165 flow [2024-06-28 01:28:26,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4614, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5165, PETRI_PLACES=188, PETRI_TRANSITIONS=388} [2024-06-28 01:28:26,210 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 135 predicate places. [2024-06-28 01:28:26,210 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 388 transitions, 5165 flow [2024-06-28 01:28:26,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:26,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:26,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:26,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:28:26,210 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:26,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:26,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1470815153, now seen corresponding path program 5 times [2024-06-28 01:28:26,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:26,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984475348] [2024-06-28 01:28:26,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:26,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:27,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:27,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:27,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984475348] [2024-06-28 01:28:27,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984475348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:27,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:27,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:28:27,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150885603] [2024-06-28 01:28:27,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:27,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:28:27,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:27,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:28:27,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:28:27,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:28:27,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 388 transitions, 5165 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:27,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:27,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:28:27,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:29,059 INFO L124 PetriNetUnfolderBase]: 6164/9868 cut-off events. [2024-06-28 01:28:29,059 INFO L125 PetriNetUnfolderBase]: For 239729/239786 co-relation queries the response was YES. [2024-06-28 01:28:29,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65148 conditions, 9868 events. 6164/9868 cut-off events. For 239729/239786 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 63361 event pairs, 1818 based on Foata normal form. 53/9598 useless extension candidates. Maximal degree in co-relation 65066. Up to 8376 conditions per place. [2024-06-28 01:28:29,149 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 328 selfloop transitions, 96 changer transitions 0/442 dead transitions. [2024-06-28 01:28:29,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 442 transitions, 6372 flow [2024-06-28 01:28:29,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:28:29,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:28:29,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-28 01:28:29,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224586288416075 [2024-06-28 01:28:29,152 INFO L175 Difference]: Start difference. First operand has 188 places, 388 transitions, 5165 flow. Second operand 9 states and 221 transitions. [2024-06-28 01:28:29,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 442 transitions, 6372 flow [2024-06-28 01:28:29,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 442 transitions, 6157 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-28 01:28:29,564 INFO L231 Difference]: Finished difference. Result has 192 places, 394 transitions, 5279 flow [2024-06-28 01:28:29,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4950, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5279, PETRI_PLACES=192, PETRI_TRANSITIONS=394} [2024-06-28 01:28:29,565 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 139 predicate places. [2024-06-28 01:28:29,565 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 394 transitions, 5279 flow [2024-06-28 01:28:29,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:29,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:29,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:29,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:28:29,566 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:29,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:29,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1467983861, now seen corresponding path program 2 times [2024-06-28 01:28:29,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:29,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914119267] [2024-06-28 01:28:29,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:29,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:30,376 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 01:28:30,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:30,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914119267] [2024-06-28 01:28:30,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914119267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:30,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:30,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:28:30,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364291800] [2024-06-28 01:28:30,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:30,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:28:30,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:30,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:28:30,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:28:30,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:28:30,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 394 transitions, 5279 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:30,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:30,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:28:30,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:32,346 INFO L124 PetriNetUnfolderBase]: 6928/10820 cut-off events. [2024-06-28 01:28:32,347 INFO L125 PetriNetUnfolderBase]: For 253536/253566 co-relation queries the response was YES. [2024-06-28 01:28:32,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70564 conditions, 10820 events. 6928/10820 cut-off events. For 253536/253566 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 66739 event pairs, 2101 based on Foata normal form. 34/10559 useless extension candidates. Maximal degree in co-relation 70481. Up to 9448 conditions per place. [2024-06-28 01:28:32,648 INFO L140 encePairwiseOnDemand]: 29/47 looper letters, 353 selfloop transitions, 99 changer transitions 0/461 dead transitions. [2024-06-28 01:28:32,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 461 transitions, 6674 flow [2024-06-28 01:28:32,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:28:32,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:28:32,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 236 transitions. [2024-06-28 01:28:32,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502127659574468 [2024-06-28 01:28:32,650 INFO L175 Difference]: Start difference. First operand has 192 places, 394 transitions, 5279 flow. Second operand 10 states and 236 transitions. [2024-06-28 01:28:32,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 461 transitions, 6674 flow [2024-06-28 01:28:33,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 461 transitions, 6430 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-28 01:28:33,120 INFO L231 Difference]: Finished difference. Result has 197 places, 407 transitions, 5477 flow [2024-06-28 01:28:33,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5040, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5477, PETRI_PLACES=197, PETRI_TRANSITIONS=407} [2024-06-28 01:28:33,121 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 144 predicate places. [2024-06-28 01:28:33,121 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 407 transitions, 5477 flow [2024-06-28 01:28:33,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:33,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:33,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:33,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:28:33,122 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:33,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:33,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1351804913, now seen corresponding path program 6 times [2024-06-28 01:28:33,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:33,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413045472] [2024-06-28 01:28:33,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:33,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:33,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:33,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:33,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:33,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413045472] [2024-06-28 01:28:33,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413045472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:33,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:33,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:28:33,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872994494] [2024-06-28 01:28:33,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:33,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:28:33,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:33,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:28:33,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:28:34,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:28:34,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 407 transitions, 5477 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:34,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:34,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:28:34,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:35,871 INFO L124 PetriNetUnfolderBase]: 6459/10331 cut-off events. [2024-06-28 01:28:35,871 INFO L125 PetriNetUnfolderBase]: For 281803/281865 co-relation queries the response was YES. [2024-06-28 01:28:36,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69857 conditions, 10331 events. 6459/10331 cut-off events. For 281803/281865 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 66546 event pairs, 1747 based on Foata normal form. 61/10068 useless extension candidates. Maximal degree in co-relation 69772. Up to 8296 conditions per place. [2024-06-28 01:28:36,189 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 309 selfloop transitions, 139 changer transitions 0/468 dead transitions. [2024-06-28 01:28:36,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 468 transitions, 6960 flow [2024-06-28 01:28:36,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:28:36,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:28:36,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-28 01:28:36,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541371158392435 [2024-06-28 01:28:36,191 INFO L175 Difference]: Start difference. First operand has 197 places, 407 transitions, 5477 flow. Second operand 9 states and 229 transitions. [2024-06-28 01:28:36,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 468 transitions, 6960 flow [2024-06-28 01:28:36,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 468 transitions, 6726 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-28 01:28:36,670 INFO L231 Difference]: Finished difference. Result has 199 places, 410 transitions, 5640 flow [2024-06-28 01:28:36,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5243, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5640, PETRI_PLACES=199, PETRI_TRANSITIONS=410} [2024-06-28 01:28:36,670 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 146 predicate places. [2024-06-28 01:28:36,670 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 410 transitions, 5640 flow [2024-06-28 01:28:36,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:36,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:36,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:36,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:28:36,671 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:36,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:36,672 INFO L85 PathProgramCache]: Analyzing trace with hash 285773495, now seen corresponding path program 3 times [2024-06-28 01:28:36,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:36,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957865631] [2024-06-28 01:28:36,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:36,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:37,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:37,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:37,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957865631] [2024-06-28 01:28:37,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957865631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:37,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:37,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:28:37,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712021759] [2024-06-28 01:28:37,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:37,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:28:37,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:37,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:28:37,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:28:37,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:28:37,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 410 transitions, 5640 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:37,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:37,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:28:37,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:39,711 INFO L124 PetriNetUnfolderBase]: 7282/11313 cut-off events. [2024-06-28 01:28:39,711 INFO L125 PetriNetUnfolderBase]: For 300006/300024 co-relation queries the response was YES. [2024-06-28 01:28:39,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76743 conditions, 11313 events. 7282/11313 cut-off events. For 300006/300024 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 69665 event pairs, 2155 based on Foata normal form. 22/11030 useless extension candidates. Maximal degree in co-relation 76657. Up to 9434 conditions per place. [2024-06-28 01:28:39,854 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 330 selfloop transitions, 145 changer transitions 0/484 dead transitions. [2024-06-28 01:28:39,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 484 transitions, 7296 flow [2024-06-28 01:28:39,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:28:39,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:28:39,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 243 transitions. [2024-06-28 01:28:39,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170212765957447 [2024-06-28 01:28:39,857 INFO L175 Difference]: Start difference. First operand has 199 places, 410 transitions, 5640 flow. Second operand 10 states and 243 transitions. [2024-06-28 01:28:39,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 484 transitions, 7296 flow [2024-06-28 01:28:40,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 484 transitions, 6942 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 01:28:40,635 INFO L231 Difference]: Finished difference. Result has 203 places, 419 transitions, 5755 flow [2024-06-28 01:28:40,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5301, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5755, PETRI_PLACES=203, PETRI_TRANSITIONS=419} [2024-06-28 01:28:40,636 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 150 predicate places. [2024-06-28 01:28:40,636 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 419 transitions, 5755 flow [2024-06-28 01:28:40,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:40,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:40,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:40,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:28:40,636 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:40,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:40,637 INFO L85 PathProgramCache]: Analyzing trace with hash 285983024, now seen corresponding path program 1 times [2024-06-28 01:28:40,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:40,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236407600] [2024-06-28 01:28:40,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:40,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:41,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:41,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:41,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236407600] [2024-06-28 01:28:41,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236407600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:41,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:41,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:28:41,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956569304] [2024-06-28 01:28:41,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:41,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:28:41,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:41,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:28:41,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:28:41,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:28:41,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 419 transitions, 5755 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:41,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:41,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:28:41,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:43,404 INFO L124 PetriNetUnfolderBase]: 7505/11637 cut-off events. [2024-06-28 01:28:43,405 INFO L125 PetriNetUnfolderBase]: For 320862/320880 co-relation queries the response was YES. [2024-06-28 01:28:43,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79248 conditions, 11637 events. 7505/11637 cut-off events. For 320862/320880 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 71882 event pairs, 2128 based on Foata normal form. 46/11368 useless extension candidates. Maximal degree in co-relation 79160. Up to 9484 conditions per place. [2024-06-28 01:28:43,557 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 326 selfloop transitions, 178 changer transitions 0/513 dead transitions. [2024-06-28 01:28:43,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 513 transitions, 7806 flow [2024-06-28 01:28:43,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:28:43,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:28:43,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 244 transitions. [2024-06-28 01:28:43,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5191489361702127 [2024-06-28 01:28:43,559 INFO L175 Difference]: Start difference. First operand has 203 places, 419 transitions, 5755 flow. Second operand 10 states and 244 transitions. [2024-06-28 01:28:43,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 513 transitions, 7806 flow [2024-06-28 01:28:44,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 513 transitions, 7352 flow, removed 59 selfloop flow, removed 7 redundant places. [2024-06-28 01:28:44,288 INFO L231 Difference]: Finished difference. Result has 209 places, 452 transitions, 6520 flow [2024-06-28 01:28:44,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5373, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6520, PETRI_PLACES=209, PETRI_TRANSITIONS=452} [2024-06-28 01:28:44,289 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 156 predicate places. [2024-06-28 01:28:44,289 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 452 transitions, 6520 flow [2024-06-28 01:28:44,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:44,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:44,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:44,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:28:44,290 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:44,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:44,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1103972654, now seen corresponding path program 1 times [2024-06-28 01:28:44,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:44,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811434402] [2024-06-28 01:28:44,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:44,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:44,691 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 01:28:44,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:44,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811434402] [2024-06-28 01:28:44,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811434402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:44,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:44,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:28:44,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823583414] [2024-06-28 01:28:44,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:44,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:28:44,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:44,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:28:44,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:28:44,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:28:44,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 452 transitions, 6520 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:44,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:44,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:28:44,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:46,714 INFO L124 PetriNetUnfolderBase]: 7814/12011 cut-off events. [2024-06-28 01:28:46,714 INFO L125 PetriNetUnfolderBase]: For 348852/348864 co-relation queries the response was YES. [2024-06-28 01:28:46,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84248 conditions, 12011 events. 7814/12011 cut-off events. For 348852/348864 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 73021 event pairs, 2990 based on Foata normal form. 13/11755 useless extension candidates. Maximal degree in co-relation 84156. Up to 11025 conditions per place. [2024-06-28 01:28:46,867 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 451 selfloop transitions, 44 changer transitions 0/502 dead transitions. [2024-06-28 01:28:46,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 502 transitions, 8024 flow [2024-06-28 01:28:46,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:28:46,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:28:46,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 01:28:46,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48632218844984804 [2024-06-28 01:28:46,868 INFO L175 Difference]: Start difference. First operand has 209 places, 452 transitions, 6520 flow. Second operand 7 states and 160 transitions. [2024-06-28 01:28:46,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 502 transitions, 8024 flow [2024-06-28 01:28:48,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 502 transitions, 7792 flow, removed 73 selfloop flow, removed 5 redundant places. [2024-06-28 01:28:48,024 INFO L231 Difference]: Finished difference. Result has 213 places, 465 transitions, 6583 flow [2024-06-28 01:28:48,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6290, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6583, PETRI_PLACES=213, PETRI_TRANSITIONS=465} [2024-06-28 01:28:48,025 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 160 predicate places. [2024-06-28 01:28:48,025 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 465 transitions, 6583 flow [2024-06-28 01:28:48,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:48,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:48,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:48,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:28:48,025 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:48,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:48,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1023315475, now seen corresponding path program 7 times [2024-06-28 01:28:48,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:48,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646588387] [2024-06-28 01:28:48,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:48,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:48,853 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 01:28:48,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:48,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646588387] [2024-06-28 01:28:48,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646588387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:48,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:48,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:28:48,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592950451] [2024-06-28 01:28:48,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:48,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:28:48,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:48,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:28:48,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:28:48,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:28:48,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 465 transitions, 6583 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:48,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:48,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:28:48,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:51,047 INFO L124 PetriNetUnfolderBase]: 7024/11101 cut-off events. [2024-06-28 01:28:51,047 INFO L125 PetriNetUnfolderBase]: For 359484/359606 co-relation queries the response was YES. [2024-06-28 01:28:51,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80442 conditions, 11101 events. 7024/11101 cut-off events. For 359484/359606 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 71551 event pairs, 1919 based on Foata normal form. 47/10780 useless extension candidates. Maximal degree in co-relation 80347. Up to 9312 conditions per place. [2024-06-28 01:28:51,211 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 366 selfloop transitions, 115 changer transitions 0/508 dead transitions. [2024-06-28 01:28:51,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 508 transitions, 7867 flow [2024-06-28 01:28:51,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:51,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:51,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 01:28:51,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159574468085106 [2024-06-28 01:28:51,213 INFO L175 Difference]: Start difference. First operand has 213 places, 465 transitions, 6583 flow. Second operand 8 states and 194 transitions. [2024-06-28 01:28:51,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 508 transitions, 7867 flow [2024-06-28 01:28:52,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 508 transitions, 7784 flow, removed 35 selfloop flow, removed 2 redundant places. [2024-06-28 01:28:52,018 INFO L231 Difference]: Finished difference. Result has 219 places, 468 transitions, 6888 flow [2024-06-28 01:28:52,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6500, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6888, PETRI_PLACES=219, PETRI_TRANSITIONS=468} [2024-06-28 01:28:52,019 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 166 predicate places. [2024-06-28 01:28:52,019 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 468 transitions, 6888 flow [2024-06-28 01:28:52,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:52,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:52,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:52,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:28:52,020 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:52,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:52,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1023254095, now seen corresponding path program 8 times [2024-06-28 01:28:52,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:52,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618572447] [2024-06-28 01:28:52,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:52,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:52,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:52,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:52,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618572447] [2024-06-28 01:28:52,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618572447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:52,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:52,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:28:52,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030777206] [2024-06-28 01:28:52,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:52,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:28:52,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:52,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:28:52,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:28:53,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:28:53,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 468 transitions, 6888 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:53,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:53,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:28:53,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:55,259 INFO L124 PetriNetUnfolderBase]: 6996/11049 cut-off events. [2024-06-28 01:28:55,259 INFO L125 PetriNetUnfolderBase]: For 369780/369910 co-relation queries the response was YES. [2024-06-28 01:28:55,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81767 conditions, 11049 events. 6996/11049 cut-off events. For 369780/369910 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 71189 event pairs, 2141 based on Foata normal form. 59/10752 useless extension candidates. Maximal degree in co-relation 81670. Up to 9336 conditions per place. [2024-06-28 01:28:55,397 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 351 selfloop transitions, 134 changer transitions 0/512 dead transitions. [2024-06-28 01:28:55,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 512 transitions, 8208 flow [2024-06-28 01:28:55,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:55,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:55,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:28:55,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186170212765957 [2024-06-28 01:28:55,399 INFO L175 Difference]: Start difference. First operand has 219 places, 468 transitions, 6888 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:28:55,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 512 transitions, 8208 flow [2024-06-28 01:28:56,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 512 transitions, 7870 flow, removed 70 selfloop flow, removed 6 redundant places. [2024-06-28 01:28:56,466 INFO L231 Difference]: Finished difference. Result has 221 places, 471 transitions, 6978 flow [2024-06-28 01:28:56,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6568, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6978, PETRI_PLACES=221, PETRI_TRANSITIONS=471} [2024-06-28 01:28:56,466 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 168 predicate places. [2024-06-28 01:28:56,467 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 471 transitions, 6978 flow [2024-06-28 01:28:56,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:56,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:56,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:56,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:28:56,467 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:56,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:56,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1020422803, now seen corresponding path program 4 times [2024-06-28 01:28:56,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:56,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461410981] [2024-06-28 01:28:56,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:56,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:57,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:57,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:57,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461410981] [2024-06-28 01:28:57,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461410981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:57,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:57,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:57,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654959915] [2024-06-28 01:28:57,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:57,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:57,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:57,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:57,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:57,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:28:57,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 471 transitions, 6978 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:57,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:57,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:28:57,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:59,595 INFO L124 PetriNetUnfolderBase]: 7625/11831 cut-off events. [2024-06-28 01:28:59,595 INFO L125 PetriNetUnfolderBase]: For 306723/306765 co-relation queries the response was YES. [2024-06-28 01:28:59,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82009 conditions, 11831 events. 7625/11831 cut-off events. For 306723/306765 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 73554 event pairs, 1930 based on Foata normal form. 22/11536 useless extension candidates. Maximal degree in co-relation 81912. Up to 9676 conditions per place. [2024-06-28 01:28:59,782 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 317 selfloop transitions, 206 changer transitions 0/535 dead transitions. [2024-06-28 01:28:59,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 535 transitions, 8642 flow [2024-06-28 01:28:59,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:59,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:59,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 01:28:59,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079787234042553 [2024-06-28 01:28:59,791 INFO L175 Difference]: Start difference. First operand has 221 places, 471 transitions, 6978 flow. Second operand 8 states and 191 transitions. [2024-06-28 01:28:59,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 535 transitions, 8642 flow [2024-06-28 01:29:00,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 535 transitions, 8238 flow, removed 77 selfloop flow, removed 6 redundant places. [2024-06-28 01:29:00,890 INFO L231 Difference]: Finished difference. Result has 225 places, 492 transitions, 7530 flow [2024-06-28 01:29:00,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6612, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7530, PETRI_PLACES=225, PETRI_TRANSITIONS=492} [2024-06-28 01:29:00,891 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 172 predicate places. [2024-06-28 01:29:00,891 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 492 transitions, 7530 flow [2024-06-28 01:29:00,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:00,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:00,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:00,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:29:00,892 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:00,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:00,892 INFO L85 PathProgramCache]: Analyzing trace with hash -904028374, now seen corresponding path program 2 times [2024-06-28 01:29:00,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:00,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224571608] [2024-06-28 01:29:00,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:00,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:01,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:01,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:01,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224571608] [2024-06-28 01:29:01,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224571608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:01,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:01,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:01,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565216353] [2024-06-28 01:29:01,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:01,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:01,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:01,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:01,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:01,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:29:01,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 492 transitions, 7530 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:01,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:01,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:29:01,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:04,261 INFO L124 PetriNetUnfolderBase]: 7849/12149 cut-off events. [2024-06-28 01:29:04,262 INFO L125 PetriNetUnfolderBase]: For 307070/307112 co-relation queries the response was YES. [2024-06-28 01:29:04,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84982 conditions, 12149 events. 7849/12149 cut-off events. For 307070/307112 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 75634 event pairs, 1921 based on Foata normal form. 42/11860 useless extension candidates. Maximal degree in co-relation 84882. Up to 9458 conditions per place. [2024-06-28 01:29:04,417 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 326 selfloop transitions, 212 changer transitions 0/550 dead transitions. [2024-06-28 01:29:04,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 550 transitions, 9069 flow [2024-06-28 01:29:04,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:04,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:04,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-28 01:29:04,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130023640661938 [2024-06-28 01:29:04,419 INFO L175 Difference]: Start difference. First operand has 225 places, 492 transitions, 7530 flow. Second operand 9 states and 217 transitions. [2024-06-28 01:29:04,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 550 transitions, 9069 flow [2024-06-28 01:29:05,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 550 transitions, 8948 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-28 01:29:05,542 INFO L231 Difference]: Finished difference. Result has 231 places, 495 transitions, 7956 flow [2024-06-28 01:29:05,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7409, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7956, PETRI_PLACES=231, PETRI_TRANSITIONS=495} [2024-06-28 01:29:05,543 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 178 predicate places. [2024-06-28 01:29:05,543 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 495 transitions, 7956 flow [2024-06-28 01:29:05,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:05,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:05,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:05,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:29:05,544 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:05,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:05,544 INFO L85 PathProgramCache]: Analyzing trace with hash -904243855, now seen corresponding path program 9 times [2024-06-28 01:29:05,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:05,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407405166] [2024-06-28 01:29:05,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:05,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:06,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:06,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:06,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407405166] [2024-06-28 01:29:06,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407405166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:06,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:06,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:06,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138403098] [2024-06-28 01:29:06,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:06,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:06,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:06,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:06,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:06,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:29:06,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 495 transitions, 7956 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:06,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:06,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:29:06,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:08,812 INFO L124 PetriNetUnfolderBase]: 7297/11572 cut-off events. [2024-06-28 01:29:08,812 INFO L125 PetriNetUnfolderBase]: For 350585/350690 co-relation queries the response was YES. [2024-06-28 01:29:08,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85777 conditions, 11572 events. 7297/11572 cut-off events. For 350585/350690 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 75302 event pairs, 1722 based on Foata normal form. 80/11276 useless extension candidates. Maximal degree in co-relation 85675. Up to 8909 conditions per place. [2024-06-28 01:29:08,983 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 309 selfloop transitions, 205 changer transitions 0/543 dead transitions. [2024-06-28 01:29:08,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 543 transitions, 9368 flow [2024-06-28 01:29:08,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:08,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:08,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 01:29:08,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345744680851063 [2024-06-28 01:29:08,985 INFO L175 Difference]: Start difference. First operand has 231 places, 495 transitions, 7956 flow. Second operand 8 states and 201 transitions. [2024-06-28 01:29:08,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 543 transitions, 9368 flow [2024-06-28 01:29:10,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 543 transitions, 8917 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 01:29:10,150 INFO L231 Difference]: Finished difference. Result has 232 places, 498 transitions, 8044 flow [2024-06-28 01:29:10,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7505, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8044, PETRI_PLACES=232, PETRI_TRANSITIONS=498} [2024-06-28 01:29:10,151 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 179 predicate places. [2024-06-28 01:29:10,151 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 498 transitions, 8044 flow [2024-06-28 01:29:10,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:10,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:10,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:10,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:29:10,152 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:10,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:10,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1033942444, now seen corresponding path program 2 times [2024-06-28 01:29:10,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:10,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075157605] [2024-06-28 01:29:10,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:10,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:10,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:10,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:10,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075157605] [2024-06-28 01:29:10,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075157605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:10,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:10,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:29:10,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399130563] [2024-06-28 01:29:10,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:10,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:29:10,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:10,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:29:10,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:29:10,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:29:10,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 498 transitions, 8044 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:10,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:10,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:29:10,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:13,231 INFO L124 PetriNetUnfolderBase]: 8384/12856 cut-off events. [2024-06-28 01:29:13,231 INFO L125 PetriNetUnfolderBase]: For 356786/356800 co-relation queries the response was YES. [2024-06-28 01:29:13,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93129 conditions, 12856 events. 8384/12856 cut-off events. For 356786/356800 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 78970 event pairs, 2980 based on Foata normal form. 15/12604 useless extension candidates. Maximal degree in co-relation 93026. Up to 11865 conditions per place. [2024-06-28 01:29:13,414 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 478 selfloop transitions, 49 changer transitions 0/534 dead transitions. [2024-06-28 01:29:13,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 534 transitions, 9478 flow [2024-06-28 01:29:13,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:29:13,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:29:13,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-28 01:29:13,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48226950354609927 [2024-06-28 01:29:13,416 INFO L175 Difference]: Start difference. First operand has 232 places, 498 transitions, 8044 flow. Second operand 6 states and 136 transitions. [2024-06-28 01:29:13,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 534 transitions, 9478 flow [2024-06-28 01:29:14,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 534 transitions, 9005 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-28 01:29:14,728 INFO L231 Difference]: Finished difference. Result has 232 places, 504 transitions, 7763 flow [2024-06-28 01:29:14,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7579, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7763, PETRI_PLACES=232, PETRI_TRANSITIONS=504} [2024-06-28 01:29:14,734 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 179 predicate places. [2024-06-28 01:29:14,734 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 504 transitions, 7763 flow [2024-06-28 01:29:14,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:14,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:14,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:14,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:29:14,735 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:14,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:14,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1327052054, now seen corresponding path program 3 times [2024-06-28 01:29:14,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:14,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549999785] [2024-06-28 01:29:14,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:14,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:15,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:15,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:15,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549999785] [2024-06-28 01:29:15,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549999785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:15,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:15,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:15,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013576783] [2024-06-28 01:29:15,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:15,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:15,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:15,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:15,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:15,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:29:15,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 504 transitions, 7763 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:15,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:15,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:29:15,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:18,396 INFO L124 PetriNetUnfolderBase]: 8195/12625 cut-off events. [2024-06-28 01:29:18,396 INFO L125 PetriNetUnfolderBase]: For 333974/334056 co-relation queries the response was YES. [2024-06-28 01:29:18,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89685 conditions, 12625 events. 8195/12625 cut-off events. For 333974/334056 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 78971 event pairs, 2642 based on Foata normal form. 34/12352 useless extension candidates. Maximal degree in co-relation 89581. Up to 11264 conditions per place. [2024-06-28 01:29:18,549 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 435 selfloop transitions, 124 changer transitions 0/573 dead transitions. [2024-06-28 01:29:18,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 573 transitions, 9478 flow [2024-06-28 01:29:18,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:29:18,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:29:18,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 233 transitions. [2024-06-28 01:29:18,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4957446808510638 [2024-06-28 01:29:18,550 INFO L175 Difference]: Start difference. First operand has 232 places, 504 transitions, 7763 flow. Second operand 10 states and 233 transitions. [2024-06-28 01:29:18,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 573 transitions, 9478 flow [2024-06-28 01:29:19,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 573 transitions, 9390 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 01:29:19,585 INFO L231 Difference]: Finished difference. Result has 238 places, 507 transitions, 8036 flow [2024-06-28 01:29:19,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7675, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8036, PETRI_PLACES=238, PETRI_TRANSITIONS=507} [2024-06-28 01:29:19,600 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 185 predicate places. [2024-06-28 01:29:19,600 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 507 transitions, 8036 flow [2024-06-28 01:29:19,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:19,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:19,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:19,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:29:19,601 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:19,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:19,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1326725624, now seen corresponding path program 4 times [2024-06-28 01:29:19,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:19,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207500697] [2024-06-28 01:29:19,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:19,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:20,570 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 01:29:20,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:20,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207500697] [2024-06-28 01:29:20,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207500697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:20,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:20,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:20,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345799841] [2024-06-28 01:29:20,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:20,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:20,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:20,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:20,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:20,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:29:20,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 507 transitions, 8036 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:20,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:20,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:29:20,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:23,315 INFO L124 PetriNetUnfolderBase]: 8265/12695 cut-off events. [2024-06-28 01:29:23,316 INFO L125 PetriNetUnfolderBase]: For 352483/352565 co-relation queries the response was YES. [2024-06-28 01:29:23,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92000 conditions, 12695 events. 8265/12695 cut-off events. For 352483/352565 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 79113 event pairs, 2546 based on Foata normal form. 34/12434 useless extension candidates. Maximal degree in co-relation 91896. Up to 11170 conditions per place. [2024-06-28 01:29:23,460 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 433 selfloop transitions, 136 changer transitions 0/583 dead transitions. [2024-06-28 01:29:23,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 583 transitions, 10063 flow [2024-06-28 01:29:23,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:23,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:23,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-28 01:29:23,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-06-28 01:29:23,462 INFO L175 Difference]: Start difference. First operand has 238 places, 507 transitions, 8036 flow. Second operand 9 states and 213 transitions. [2024-06-28 01:29:23,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 583 transitions, 10063 flow [2024-06-28 01:29:24,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 583 transitions, 9728 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-06-28 01:29:24,489 INFO L231 Difference]: Finished difference. Result has 240 places, 523 transitions, 8375 flow [2024-06-28 01:29:24,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7701, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8375, PETRI_PLACES=240, PETRI_TRANSITIONS=523} [2024-06-28 01:29:24,490 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 187 predicate places. [2024-06-28 01:29:24,490 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 523 transitions, 8375 flow [2024-06-28 01:29:24,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:24,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:24,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:24,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:29:24,491 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:24,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:24,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1592964815, now seen corresponding path program 10 times [2024-06-28 01:29:24,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:24,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838244912] [2024-06-28 01:29:24,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:24,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:25,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:25,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:25,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838244912] [2024-06-28 01:29:25,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838244912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:25,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:25,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:25,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965765523] [2024-06-28 01:29:25,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:25,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:25,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:25,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:25,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:25,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:29:25,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 523 transitions, 8375 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:25,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:25,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:29:25,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:27,885 INFO L124 PetriNetUnfolderBase]: 7532/11840 cut-off events. [2024-06-28 01:29:27,885 INFO L125 PetriNetUnfolderBase]: For 379150/379243 co-relation queries the response was YES. [2024-06-28 01:29:27,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89285 conditions, 11840 events. 7532/11840 cut-off events. For 379150/379243 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 76862 event pairs, 1649 based on Foata normal form. 69/11583 useless extension candidates. Maximal degree in co-relation 89179. Up to 9244 conditions per place. [2024-06-28 01:29:28,044 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 320 selfloop transitions, 225 changer transitions 0/576 dead transitions. [2024-06-28 01:29:28,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 576 transitions, 10051 flow [2024-06-28 01:29:28,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:28,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:28,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 01:29:28,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5452127659574468 [2024-06-28 01:29:28,049 INFO L175 Difference]: Start difference. First operand has 240 places, 523 transitions, 8375 flow. Second operand 8 states and 205 transitions. [2024-06-28 01:29:28,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 576 transitions, 10051 flow [2024-06-28 01:29:29,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 576 transitions, 9776 flow, removed 65 selfloop flow, removed 5 redundant places. [2024-06-28 01:29:29,390 INFO L231 Difference]: Finished difference. Result has 243 places, 526 transitions, 8681 flow [2024-06-28 01:29:29,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8104, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8681, PETRI_PLACES=243, PETRI_TRANSITIONS=526} [2024-06-28 01:29:29,391 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 190 predicate places. [2024-06-28 01:29:29,392 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 526 transitions, 8681 flow [2024-06-28 01:29:29,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:29,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:29,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:29,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:29:29,392 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:29,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:29,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1592749334, now seen corresponding path program 5 times [2024-06-28 01:29:29,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:29,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687761390] [2024-06-28 01:29:29,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:29,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:30,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:30,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:30,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687761390] [2024-06-28 01:29:30,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687761390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:30,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:30,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:30,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534729449] [2024-06-28 01:29:30,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:30,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:30,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:30,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:30,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:30,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:29:30,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 526 transitions, 8681 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:30,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:30,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:29:30,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:32,881 INFO L124 PetriNetUnfolderBase]: 8417/12938 cut-off events. [2024-06-28 01:29:32,882 INFO L125 PetriNetUnfolderBase]: For 398991/399073 co-relation queries the response was YES. [2024-06-28 01:29:33,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96536 conditions, 12938 events. 8417/12938 cut-off events. For 398991/399073 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 81244 event pairs, 2715 based on Foata normal form. 34/12672 useless extension candidates. Maximal degree in co-relation 96428. Up to 11690 conditions per place. [2024-06-28 01:29:33,080 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 488 selfloop transitions, 83 changer transitions 0/585 dead transitions. [2024-06-28 01:29:33,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 585 transitions, 10339 flow [2024-06-28 01:29:33,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:33,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:33,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-06-28 01:29:33,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2024-06-28 01:29:33,082 INFO L175 Difference]: Start difference. First operand has 243 places, 526 transitions, 8681 flow. Second operand 9 states and 210 transitions. [2024-06-28 01:29:33,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 585 transitions, 10339 flow [2024-06-28 01:29:34,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 585 transitions, 9666 flow, removed 120 selfloop flow, removed 5 redundant places. [2024-06-28 01:29:34,652 INFO L231 Difference]: Finished difference. Result has 247 places, 528 transitions, 8271 flow [2024-06-28 01:29:34,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8068, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8271, PETRI_PLACES=247, PETRI_TRANSITIONS=528} [2024-06-28 01:29:34,653 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 194 predicate places. [2024-06-28 01:29:34,653 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 528 transitions, 8271 flow [2024-06-28 01:29:34,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:34,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:34,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:34,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:29:34,654 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:34,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:34,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1592958863, now seen corresponding path program 5 times [2024-06-28 01:29:34,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:34,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967094354] [2024-06-28 01:29:34,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:34,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:34,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:35,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:35,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:35,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967094354] [2024-06-28 01:29:35,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967094354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:35,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:35,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:35,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58856318] [2024-06-28 01:29:35,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:35,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:35,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:35,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:35,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:35,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:29:35,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 528 transitions, 8271 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:35,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:35,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:29:35,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:38,213 INFO L124 PetriNetUnfolderBase]: 8350/12850 cut-off events. [2024-06-28 01:29:38,214 INFO L125 PetriNetUnfolderBase]: For 362482/362528 co-relation queries the response was YES. [2024-06-28 01:29:38,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92869 conditions, 12850 events. 8350/12850 cut-off events. For 362482/362528 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 80420 event pairs, 1800 based on Foata normal form. 26/12608 useless extension candidates. Maximal degree in co-relation 92760. Up to 10835 conditions per place. [2024-06-28 01:29:38,397 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 389 selfloop transitions, 193 changer transitions 0/596 dead transitions. [2024-06-28 01:29:38,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 596 transitions, 10028 flow [2024-06-28 01:29:38,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:38,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:38,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-28 01:29:38,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059101654846335 [2024-06-28 01:29:38,398 INFO L175 Difference]: Start difference. First operand has 247 places, 528 transitions, 8271 flow. Second operand 9 states and 214 transitions. [2024-06-28 01:29:38,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 596 transitions, 10028 flow [2024-06-28 01:29:39,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 596 transitions, 9839 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 01:29:39,694 INFO L231 Difference]: Finished difference. Result has 251 places, 546 transitions, 8778 flow [2024-06-28 01:29:39,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8088, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8778, PETRI_PLACES=251, PETRI_TRANSITIONS=546} [2024-06-28 01:29:39,695 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 198 predicate places. [2024-06-28 01:29:39,695 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 546 transitions, 8778 flow [2024-06-28 01:29:39,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:39,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:39,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:39,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:29:39,696 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:39,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:39,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1592757053, now seen corresponding path program 6 times [2024-06-28 01:29:39,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:39,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442304474] [2024-06-28 01:29:39,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:39,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:40,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:40,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:40,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442304474] [2024-06-28 01:29:40,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442304474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:40,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:40,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:40,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015218337] [2024-06-28 01:29:40,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:40,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:40,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:40,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:40,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:40,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:29:40,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 546 transitions, 8778 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:40,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:40,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:29:40,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:43,369 INFO L124 PetriNetUnfolderBase]: 8440/12974 cut-off events. [2024-06-28 01:29:43,370 INFO L125 PetriNetUnfolderBase]: For 383984/384030 co-relation queries the response was YES. [2024-06-28 01:29:43,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95594 conditions, 12974 events. 8440/12974 cut-off events. For 383984/384030 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 81247 event pairs, 1800 based on Foata normal form. 26/12732 useless extension candidates. Maximal degree in co-relation 95482. Up to 10882 conditions per place. [2024-06-28 01:29:43,526 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 387 selfloop transitions, 209 changer transitions 0/610 dead transitions. [2024-06-28 01:29:43,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 610 transitions, 10568 flow [2024-06-28 01:29:43,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:43,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:43,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-28 01:29:43,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130023640661938 [2024-06-28 01:29:43,527 INFO L175 Difference]: Start difference. First operand has 251 places, 546 transitions, 8778 flow. Second operand 9 states and 217 transitions. [2024-06-28 01:29:43,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 610 transitions, 10568 flow [2024-06-28 01:29:44,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 610 transitions, 10169 flow, removed 106 selfloop flow, removed 3 redundant places. [2024-06-28 01:29:44,806 INFO L231 Difference]: Finished difference. Result has 259 places, 561 transitions, 9139 flow [2024-06-28 01:29:44,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8451, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9139, PETRI_PLACES=259, PETRI_TRANSITIONS=561} [2024-06-28 01:29:44,807 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 206 predicate places. [2024-06-28 01:29:44,807 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 561 transitions, 9139 flow [2024-06-28 01:29:44,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:44,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:44,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:44,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:29:44,808 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:44,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:44,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1336256543, now seen corresponding path program 7 times [2024-06-28 01:29:44,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:44,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722820036] [2024-06-28 01:29:44,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:44,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:45,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:45,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:45,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722820036] [2024-06-28 01:29:45,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722820036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:45,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:45,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:45,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465482686] [2024-06-28 01:29:45,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:45,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:45,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:45,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:45,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:45,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:29:45,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 561 transitions, 9139 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:45,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:45,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:29:45,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:48,516 INFO L124 PetriNetUnfolderBase]: 8454/12993 cut-off events. [2024-06-28 01:29:48,516 INFO L125 PetriNetUnfolderBase]: For 390847/390893 co-relation queries the response was YES. [2024-06-28 01:29:48,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97254 conditions, 12993 events. 8454/12993 cut-off events. For 390847/390893 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 81330 event pairs, 1735 based on Foata normal form. 26/12751 useless extension candidates. Maximal degree in co-relation 97138. Up to 10939 conditions per place. [2024-06-28 01:29:48,695 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 392 selfloop transitions, 219 changer transitions 0/625 dead transitions. [2024-06-28 01:29:48,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 625 transitions, 10927 flow [2024-06-28 01:29:48,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:48,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:48,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-28 01:29:48,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059101654846335 [2024-06-28 01:29:48,697 INFO L175 Difference]: Start difference. First operand has 259 places, 561 transitions, 9139 flow. Second operand 9 states and 214 transitions. [2024-06-28 01:29:48,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 625 transitions, 10927 flow [2024-06-28 01:29:50,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 625 transitions, 10408 flow, removed 75 selfloop flow, removed 4 redundant places. [2024-06-28 01:29:50,101 INFO L231 Difference]: Finished difference. Result has 265 places, 575 transitions, 9314 flow [2024-06-28 01:29:50,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8659, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9314, PETRI_PLACES=265, PETRI_TRANSITIONS=575} [2024-06-28 01:29:50,102 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 212 predicate places. [2024-06-28 01:29:50,102 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 575 transitions, 9314 flow [2024-06-28 01:29:50,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:50,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:50,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:50,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:29:50,103 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:50,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:50,103 INFO L85 PathProgramCache]: Analyzing trace with hash -314226496, now seen corresponding path program 3 times [2024-06-28 01:29:50,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:50,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192143560] [2024-06-28 01:29:50,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:50,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:50,595 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 01:29:50,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:50,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192143560] [2024-06-28 01:29:50,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192143560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:50,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:50,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:29:50,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415284187] [2024-06-28 01:29:50,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:50,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:29:50,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:50,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:29:50,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:29:50,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:29:50,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 575 transitions, 9314 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:50,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:50,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:29:50,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:53,428 INFO L124 PetriNetUnfolderBase]: 8837/13505 cut-off events. [2024-06-28 01:29:53,429 INFO L125 PetriNetUnfolderBase]: For 400269/400293 co-relation queries the response was YES. [2024-06-28 01:29:53,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100137 conditions, 13505 events. 8837/13505 cut-off events. For 400269/400293 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 82966 event pairs, 2952 based on Foata normal form. 25/13261 useless extension candidates. Maximal degree in co-relation 100019. Up to 12521 conditions per place. [2024-06-28 01:29:53,597 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 541 selfloop transitions, 48 changer transitions 0/596 dead transitions. [2024-06-28 01:29:53,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 596 transitions, 10670 flow [2024-06-28 01:29:53,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:29:53,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:29:53,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-06-28 01:29:53,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4574468085106383 [2024-06-28 01:29:53,599 INFO L175 Difference]: Start difference. First operand has 265 places, 575 transitions, 9314 flow. Second operand 6 states and 129 transitions. [2024-06-28 01:29:53,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 596 transitions, 10670 flow [2024-06-28 01:29:54,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 596 transitions, 10234 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 01:29:54,766 INFO L231 Difference]: Finished difference. Result has 266 places, 575 transitions, 8983 flow [2024-06-28 01:29:54,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8878, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8983, PETRI_PLACES=266, PETRI_TRANSITIONS=575} [2024-06-28 01:29:54,767 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 213 predicate places. [2024-06-28 01:29:54,767 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 575 transitions, 8983 flow [2024-06-28 01:29:54,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:54,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:54,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:54,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:29:54,768 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:54,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:54,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1339565043, now seen corresponding path program 1 times [2024-06-28 01:29:54,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:54,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29567405] [2024-06-28 01:29:54,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:54,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:54,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:55,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:55,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:55,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29567405] [2024-06-28 01:29:55,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29567405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:55,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:55,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:29:55,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102589924] [2024-06-28 01:29:55,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:55,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:29:55,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:55,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:29:55,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:29:55,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:29:55,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 575 transitions, 8983 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:55,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:55,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:29:55,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:58,231 INFO L124 PetriNetUnfolderBase]: 8136/12559 cut-off events. [2024-06-28 01:29:58,232 INFO L125 PetriNetUnfolderBase]: For 362782/362782 co-relation queries the response was YES. [2024-06-28 01:29:58,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92128 conditions, 12559 events. 8136/12559 cut-off events. For 362782/362782 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 78442 event pairs, 2958 based on Foata normal form. 1/12354 useless extension candidates. Maximal degree in co-relation 92009. Up to 11603 conditions per place. [2024-06-28 01:29:58,416 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 580 selfloop transitions, 22 changer transitions 0/610 dead transitions. [2024-06-28 01:29:58,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 610 transitions, 10593 flow [2024-06-28 01:29:58,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:29:58,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:29:58,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-28 01:29:58,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48226950354609927 [2024-06-28 01:29:58,419 INFO L175 Difference]: Start difference. First operand has 266 places, 575 transitions, 8983 flow. Second operand 6 states and 136 transitions. [2024-06-28 01:29:58,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 610 transitions, 10593 flow [2024-06-28 01:29:59,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 610 transitions, 10457 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 01:29:59,482 INFO L231 Difference]: Finished difference. Result has 268 places, 585 transitions, 9055 flow [2024-06-28 01:29:59,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8853, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9055, PETRI_PLACES=268, PETRI_TRANSITIONS=585} [2024-06-28 01:29:59,483 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 215 predicate places. [2024-06-28 01:29:59,483 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 585 transitions, 9055 flow [2024-06-28 01:29:59,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:59,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:59,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:59,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:29:59,484 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:59,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:59,484 INFO L85 PathProgramCache]: Analyzing trace with hash -280258773, now seen corresponding path program 2 times [2024-06-28 01:29:59,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:59,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585548749] [2024-06-28 01:29:59,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:59,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:59,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:00,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:00,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:00,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585548749] [2024-06-28 01:30:00,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585548749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:00,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:00,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:30:00,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38140234] [2024-06-28 01:30:00,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:00,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:30:00,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:00,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:30:00,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:30:00,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:30:00,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 585 transitions, 9055 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:00,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:00,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:30:00,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:02,535 INFO L124 PetriNetUnfolderBase]: 8133/12554 cut-off events. [2024-06-28 01:30:02,535 INFO L125 PetriNetUnfolderBase]: For 378087/378087 co-relation queries the response was YES. [2024-06-28 01:30:02,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93524 conditions, 12554 events. 8133/12554 cut-off events. For 378087/378087 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 78240 event pairs, 3028 based on Foata normal form. 1/12349 useless extension candidates. Maximal degree in co-relation 93403. Up to 11629 conditions per place. [2024-06-28 01:30:02,773 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 580 selfloop transitions, 14 changer transitions 0/602 dead transitions. [2024-06-28 01:30:02,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 602 transitions, 10367 flow [2024-06-28 01:30:02,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:30:02,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:30:02,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-06-28 01:30:02,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45390070921985815 [2024-06-28 01:30:02,774 INFO L175 Difference]: Start difference. First operand has 268 places, 585 transitions, 9055 flow. Second operand 6 states and 128 transitions. [2024-06-28 01:30:02,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 602 transitions, 10367 flow [2024-06-28 01:30:03,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 602 transitions, 10247 flow, removed 39 selfloop flow, removed 2 redundant places. [2024-06-28 01:30:03,858 INFO L231 Difference]: Finished difference. Result has 272 places, 585 transitions, 8969 flow [2024-06-28 01:30:03,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8935, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8969, PETRI_PLACES=272, PETRI_TRANSITIONS=585} [2024-06-28 01:30:03,868 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 219 predicate places. [2024-06-28 01:30:03,869 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 585 transitions, 8969 flow [2024-06-28 01:30:03,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:03,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:03,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:03,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:30:03,874 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:03,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:03,875 INFO L85 PathProgramCache]: Analyzing trace with hash -561451668, now seen corresponding path program 1 times [2024-06-28 01:30:03,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:03,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840505110] [2024-06-28 01:30:03,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:03,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:04,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:04,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:04,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840505110] [2024-06-28 01:30:04,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840505110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:04,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:04,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:30:04,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704086944] [2024-06-28 01:30:04,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:04,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:30:04,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:04,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:30:04,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:30:04,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:30:04,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 585 transitions, 8969 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:04,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:04,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:30:04,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:07,247 INFO L124 PetriNetUnfolderBase]: 8955/13658 cut-off events. [2024-06-28 01:30:07,247 INFO L125 PetriNetUnfolderBase]: For 432739/432765 co-relation queries the response was YES. [2024-06-28 01:30:07,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102061 conditions, 13658 events. 8955/13658 cut-off events. For 432739/432765 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 83727 event pairs, 2419 based on Foata normal form. 28/13417 useless extension candidates. Maximal degree in co-relation 101938. Up to 12461 conditions per place. [2024-06-28 01:30:07,460 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 558 selfloop transitions, 112 changer transitions 0/677 dead transitions. [2024-06-28 01:30:07,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 677 transitions, 11483 flow [2024-06-28 01:30:07,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:30:07,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:30:07,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 01:30:07,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946808510638298 [2024-06-28 01:30:07,462 INFO L175 Difference]: Start difference. First operand has 272 places, 585 transitions, 8969 flow. Second operand 8 states and 186 transitions. [2024-06-28 01:30:07,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 677 transitions, 11483 flow [2024-06-28 01:30:08,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 677 transitions, 11445 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 01:30:08,832 INFO L231 Difference]: Finished difference. Result has 280 places, 636 transitions, 10146 flow [2024-06-28 01:30:08,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8931, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10146, PETRI_PLACES=280, PETRI_TRANSITIONS=636} [2024-06-28 01:30:08,833 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 227 predicate places. [2024-06-28 01:30:08,833 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 636 transitions, 10146 flow [2024-06-28 01:30:08,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:08,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:08,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:08,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:30:08,833 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:08,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:08,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1893984060, now seen corresponding path program 1 times [2024-06-28 01:30:08,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:08,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383344779] [2024-06-28 01:30:08,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:08,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:09,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:09,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:09,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383344779] [2024-06-28 01:30:09,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383344779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:09,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:09,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:30:09,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003255494] [2024-06-28 01:30:09,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:09,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:30:09,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:09,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:30:09,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:30:09,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:30:09,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 636 transitions, 10146 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:09,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:09,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:30:09,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:13,634 INFO L124 PetriNetUnfolderBase]: 9109/13830 cut-off events. [2024-06-28 01:30:13,634 INFO L125 PetriNetUnfolderBase]: For 502378/502456 co-relation queries the response was YES. [2024-06-28 01:30:13,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109511 conditions, 13830 events. 9109/13830 cut-off events. For 502378/502456 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 85152 event pairs, 2191 based on Foata normal form. 38/13557 useless extension candidates. Maximal degree in co-relation 109384. Up to 10999 conditions per place. [2024-06-28 01:30:13,828 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 496 selfloop transitions, 198 changer transitions 0/721 dead transitions. [2024-06-28 01:30:13,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 721 transitions, 12440 flow [2024-06-28 01:30:13,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:30:13,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:30:13,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 246 transitions. [2024-06-28 01:30:13,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234042553191489 [2024-06-28 01:30:13,829 INFO L175 Difference]: Start difference. First operand has 280 places, 636 transitions, 10146 flow. Second operand 10 states and 246 transitions. [2024-06-28 01:30:13,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 721 transitions, 12440 flow [2024-06-28 01:30:15,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 721 transitions, 12264 flow, removed 87 selfloop flow, removed 1 redundant places. [2024-06-28 01:30:15,501 INFO L231 Difference]: Finished difference. Result has 290 places, 650 transitions, 10713 flow [2024-06-28 01:30:15,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9970, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10713, PETRI_PLACES=290, PETRI_TRANSITIONS=650} [2024-06-28 01:30:15,502 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 237 predicate places. [2024-06-28 01:30:15,502 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 650 transitions, 10713 flow [2024-06-28 01:30:15,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:15,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:15,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:15,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:30:15,503 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:15,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:15,503 INFO L85 PathProgramCache]: Analyzing trace with hash 352538710, now seen corresponding path program 2 times [2024-06-28 01:30:15,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:15,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594531150] [2024-06-28 01:30:15,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:15,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:16,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:16,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:16,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594531150] [2024-06-28 01:30:16,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594531150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:16,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:16,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:30:16,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575939215] [2024-06-28 01:30:16,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:16,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:30:16,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:16,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:30:16,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:30:16,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:30:16,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 650 transitions, 10713 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:16,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:16,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:30:16,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:19,813 INFO L124 PetriNetUnfolderBase]: 9472/14413 cut-off events. [2024-06-28 01:30:19,813 INFO L125 PetriNetUnfolderBase]: For 523913/523933 co-relation queries the response was YES. [2024-06-28 01:30:19,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114010 conditions, 14413 events. 9472/14413 cut-off events. For 523913/523933 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 88630 event pairs, 2710 based on Foata normal form. 22/14165 useless extension candidates. Maximal degree in co-relation 113879. Up to 13153 conditions per place. [2024-06-28 01:30:20,032 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 585 selfloop transitions, 138 changer transitions 0/730 dead transitions. [2024-06-28 01:30:20,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 730 transitions, 13170 flow [2024-06-28 01:30:20,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:30:20,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:30:20,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-28 01:30:20,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973404255319149 [2024-06-28 01:30:20,034 INFO L175 Difference]: Start difference. First operand has 290 places, 650 transitions, 10713 flow. Second operand 8 states and 187 transitions. [2024-06-28 01:30:20,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 730 transitions, 13170 flow [2024-06-28 01:30:21,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 730 transitions, 12984 flow, removed 35 selfloop flow, removed 4 redundant places. [2024-06-28 01:30:21,680 INFO L231 Difference]: Finished difference. Result has 295 places, 682 transitions, 11311 flow [2024-06-28 01:30:21,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=10527, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11311, PETRI_PLACES=295, PETRI_TRANSITIONS=682} [2024-06-28 01:30:21,681 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 242 predicate places. [2024-06-28 01:30:21,681 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 682 transitions, 11311 flow [2024-06-28 01:30:21,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:21,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:21,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:21,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:30:21,682 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:21,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:21,682 INFO L85 PathProgramCache]: Analyzing trace with hash 170750384, now seen corresponding path program 3 times [2024-06-28 01:30:21,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:21,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17129923] [2024-06-28 01:30:21,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:21,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:22,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:22,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:22,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17129923] [2024-06-28 01:30:22,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17129923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:22,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:22,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:30:22,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652895354] [2024-06-28 01:30:22,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:22,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:30:22,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:22,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:30:22,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:30:22,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:30:22,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 682 transitions, 11311 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:22,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:22,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:30:22,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:26,271 INFO L124 PetriNetUnfolderBase]: 9496/14446 cut-off events. [2024-06-28 01:30:26,271 INFO L125 PetriNetUnfolderBase]: For 521849/521861 co-relation queries the response was YES. [2024-06-28 01:30:26,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114661 conditions, 14446 events. 9496/14446 cut-off events. For 521849/521861 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 88839 event pairs, 2672 based on Foata normal form. 14/14187 useless extension candidates. Maximal degree in co-relation 114527. Up to 13178 conditions per place. [2024-06-28 01:30:26,494 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 579 selfloop transitions, 152 changer transitions 0/738 dead transitions. [2024-06-28 01:30:26,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 738 transitions, 13503 flow [2024-06-28 01:30:26,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:30:26,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:30:26,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-28 01:30:26,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48404255319148937 [2024-06-28 01:30:26,497 INFO L175 Difference]: Start difference. First operand has 295 places, 682 transitions, 11311 flow. Second operand 8 states and 182 transitions. [2024-06-28 01:30:26,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 738 transitions, 13503 flow [2024-06-28 01:30:28,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 738 transitions, 13097 flow, removed 136 selfloop flow, removed 3 redundant places. [2024-06-28 01:30:28,401 INFO L231 Difference]: Finished difference. Result has 300 places, 693 transitions, 11452 flow [2024-06-28 01:30:28,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11000, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11452, PETRI_PLACES=300, PETRI_TRANSITIONS=693} [2024-06-28 01:30:28,401 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 247 predicate places. [2024-06-28 01:30:28,402 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 693 transitions, 11452 flow [2024-06-28 01:30:28,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:28,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:28,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:28,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:30:28,402 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:28,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:28,407 INFO L85 PathProgramCache]: Analyzing trace with hash 136587237, now seen corresponding path program 1 times [2024-06-28 01:30:28,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:28,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014614527] [2024-06-28 01:30:28,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:28,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:28,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:28,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:28,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014614527] [2024-06-28 01:30:28,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014614527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:28,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:28,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:30:28,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864416264] [2024-06-28 01:30:28,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:28,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:30:28,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:28,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:30:28,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:30:29,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:30:29,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 693 transitions, 11452 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:29,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:29,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:30:29,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:32,857 INFO L124 PetriNetUnfolderBase]: 9530/14521 cut-off events. [2024-06-28 01:30:32,857 INFO L125 PetriNetUnfolderBase]: For 534582/534596 co-relation queries the response was YES. [2024-06-28 01:30:33,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115069 conditions, 14521 events. 9530/14521 cut-off events. For 534582/534596 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 89761 event pairs, 3221 based on Foata normal form. 15/14258 useless extension candidates. Maximal degree in co-relation 114934. Up to 13446 conditions per place. [2024-06-28 01:30:33,077 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 671 selfloop transitions, 73 changer transitions 0/751 dead transitions. [2024-06-28 01:30:33,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 751 transitions, 13719 flow [2024-06-28 01:30:33,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:30:33,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:30:33,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-28 01:30:33,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48404255319148937 [2024-06-28 01:30:33,078 INFO L175 Difference]: Start difference. First operand has 300 places, 693 transitions, 11452 flow. Second operand 8 states and 182 transitions. [2024-06-28 01:30:33,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 751 transitions, 13719 flow [2024-06-28 01:30:34,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 751 transitions, 13447 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-06-28 01:30:34,944 INFO L231 Difference]: Finished difference. Result has 306 places, 706 transitions, 11605 flow [2024-06-28 01:30:34,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11210, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=693, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=627, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11605, PETRI_PLACES=306, PETRI_TRANSITIONS=706} [2024-06-28 01:30:34,945 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 253 predicate places. [2024-06-28 01:30:34,945 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 706 transitions, 11605 flow [2024-06-28 01:30:34,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:34,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:34,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:34,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:30:34,946 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:34,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:34,946 INFO L85 PathProgramCache]: Analyzing trace with hash 917034326, now seen corresponding path program 2 times [2024-06-28 01:30:34,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:34,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128709969] [2024-06-28 01:30:34,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:34,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:35,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:35,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:35,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128709969] [2024-06-28 01:30:35,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128709969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:35,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:35,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:30:35,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310889933] [2024-06-28 01:30:35,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:35,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:30:35,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:35,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:30:35,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:30:35,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:30:35,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 706 transitions, 11605 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:35,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:35,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:30:35,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:39,752 INFO L124 PetriNetUnfolderBase]: 9548/14577 cut-off events. [2024-06-28 01:30:39,753 INFO L125 PetriNetUnfolderBase]: For 592892/592952 co-relation queries the response was YES. [2024-06-28 01:30:39,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119361 conditions, 14577 events. 9548/14577 cut-off events. For 592892/592952 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 91156 event pairs, 2008 based on Foata normal form. 35/14281 useless extension candidates. Maximal degree in co-relation 119223. Up to 10477 conditions per place. [2024-06-28 01:30:39,979 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 502 selfloop transitions, 240 changer transitions 0/780 dead transitions. [2024-06-28 01:30:39,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 780 transitions, 13992 flow [2024-06-28 01:30:39,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:39,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:39,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-28 01:30:39,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224586288416075 [2024-06-28 01:30:39,981 INFO L175 Difference]: Start difference. First operand has 306 places, 706 transitions, 11605 flow. Second operand 9 states and 221 transitions. [2024-06-28 01:30:39,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 780 transitions, 13992 flow [2024-06-28 01:30:42,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 780 transitions, 13890 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-28 01:30:42,256 INFO L231 Difference]: Finished difference. Result has 313 places, 714 transitions, 12306 flow [2024-06-28 01:30:42,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11503, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=706, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12306, PETRI_PLACES=313, PETRI_TRANSITIONS=714} [2024-06-28 01:30:42,257 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 260 predicate places. [2024-06-28 01:30:42,257 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 714 transitions, 12306 flow [2024-06-28 01:30:42,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:42,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:42,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:42,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:30:42,258 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:42,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:42,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1046181464, now seen corresponding path program 4 times [2024-06-28 01:30:42,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:42,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877206324] [2024-06-28 01:30:42,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:42,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:42,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:42,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:42,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877206324] [2024-06-28 01:30:42,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877206324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:42,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:42,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:30:42,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346093704] [2024-06-28 01:30:42,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:42,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:30:42,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:42,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:30:42,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:30:42,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:30:42,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 714 transitions, 12306 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:42,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:42,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:30:42,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:47,025 INFO L124 PetriNetUnfolderBase]: 9881/15050 cut-off events. [2024-06-28 01:30:47,026 INFO L125 PetriNetUnfolderBase]: For 621438/621452 co-relation queries the response was YES. [2024-06-28 01:30:47,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124223 conditions, 15050 events. 9881/15050 cut-off events. For 621438/621452 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 93520 event pairs, 3183 based on Foata normal form. 17/14795 useless extension candidates. Maximal degree in co-relation 124081. Up to 13728 conditions per place.