./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix002.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/mix002.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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/mix002.opt.i ./goblint.2024-05-07_14-17-48.files/protection/mix002.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 12:59:28,267 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 12:59:28,350 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 12:59:28,353 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 12:59:28,354 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 12:59:28,375 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 12:59:28,376 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 12:59:28,376 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 12:59:28,377 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 12:59:28,377 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 12:59:28,378 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 12:59:28,378 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 12:59:28,379 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 12:59:28,379 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 12:59:28,379 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 12:59:28,380 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 12:59:28,380 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 12:59:28,380 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 12:59:28,381 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 12:59:28,381 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 12:59:28,381 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 12:59:28,382 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 12:59:28,382 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 12:59:28,383 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 12:59:28,383 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 12:59:28,383 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 12:59:28,383 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 12:59:28,384 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 12:59:28,384 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 12:59:28,384 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 12:59:28,385 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 12:59:28,385 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 12:59:28,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:59:28,386 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 12:59:28,386 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 12:59:28,386 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 12:59:28,387 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 12:59:28,387 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 12:59:28,387 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 12:59:28,387 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 12:59:28,388 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 12:59:28,388 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 12:59:28,388 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 12:59:28,389 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 12:59:28,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 12:59:28,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 12:59:28,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 12:59:28,693 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 12:59:28,694 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 12:59:28,695 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/mix002.opt.yml/witness.yml [2024-05-12 12:59:28,941 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 12:59:28,942 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 12:59:28,943 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix002.opt.i [2024-05-12 12:59:30,108 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 12:59:30,394 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 12:59:30,395 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix002.opt.i [2024-05-12 12:59:30,410 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19d631fa5/576f7cde7d7740a1bd0e84de130cd12f/FLAG08d803cb0 [2024-05-12 12:59:30,423 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19d631fa5/576f7cde7d7740a1bd0e84de130cd12f [2024-05-12 12:59:30,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 12:59:30,425 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 12:59:30,426 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 12:59:30,426 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 12:59:30,431 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 12:59:30,431 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:59:28" (1/2) ... [2024-05-12 12:59:30,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cdefd0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:59:30, skipping insertion in model container [2024-05-12 12:59:30,433 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:59:28" (1/2) ... [2024-05-12 12:59:30,434 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6b1676e4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:59:30, skipping insertion in model container [2024-05-12 12:59:30,435 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:59:30" (2/2) ... [2024-05-12 12:59:30,436 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cdefd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:59:30, skipping insertion in model container [2024-05-12 12:59:30,436 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:59:30" (2/2) ... [2024-05-12 12:59:30,437 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 12:59:30,558 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 12:59:30,559 INFO L97 edCorrectnessWitness]: Location invariant before [L863-L863] ((((((((((((((((((((((! multithreaded || z$r_buff1_thd1 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0) [2024-05-12 12:59:30,560 INFO L97 edCorrectnessWitness]: Location invariant before [L861-L861] ((((((((((((((((((((((! multithreaded || z$r_buff1_thd1 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0) [2024-05-12 12:59:30,560 INFO L97 edCorrectnessWitness]: Location invariant before [L864-L864] ((((((((((((((((((((((! multithreaded || z$r_buff1_thd1 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0) [2024-05-12 12:59:30,560 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 12:59:30,560 INFO L106 edCorrectnessWitness]: ghost_update [L859-L859] multithreaded = 1; [2024-05-12 12:59:30,617 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 12:59:30,805 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix002.opt.i[944,957] [2024-05-12 12:59:30,980 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:59:30,989 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 12:59:31,022 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix002.opt.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 12:59:31,148 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:59:31,183 INFO L206 MainTranslator]: Completed translation [2024-05-12 12:59:31,184 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:59:31 WrapperNode [2024-05-12 12:59:31,184 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 12:59:31,185 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 12:59:31,186 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 12:59:31,186 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 12:59:31,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:59:31" (1/1) ... [2024-05-12 12:59:31,220 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:59:31" (1/1) ... [2024-05-12 12:59:31,258 INFO L138 Inliner]: procedures = 176, calls = 62, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 158 [2024-05-12 12:59:31,258 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 12:59:31,259 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 12:59:31,259 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 12:59:31,259 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 12:59:31,270 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:59:31" (1/1) ... [2024-05-12 12:59:31,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:59:31" (1/1) ... [2024-05-12 12:59:31,276 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:59:31" (1/1) ... [2024-05-12 12:59:31,293 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-05-12 12:59:31,294 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:59:31" (1/1) ... [2024-05-12 12:59:31,294 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:59:31" (1/1) ... [2024-05-12 12:59:31,305 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:59:31" (1/1) ... [2024-05-12 12:59:31,307 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:59:31" (1/1) ... [2024-05-12 12:59:31,310 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:59:31" (1/1) ... [2024-05-12 12:59:31,311 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:59:31" (1/1) ... [2024-05-12 12:59:31,316 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 12:59:31,317 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 12:59:31,317 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 12:59:31,317 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 12:59:31,318 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:59:31" (1/1) ... [2024-05-12 12:59:31,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:59:31,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:59:31,365 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) [2024-05-12 12:59:31,383 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 [2024-05-12 12:59:31,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 12:59:31,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 12:59:31,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 12:59:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 12:59:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 12:59:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 12:59:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 12:59:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 12:59:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 12:59:31,414 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 12:59:31,415 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 12:59:31,415 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 12:59:31,416 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 12:59:31,416 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 12:59:31,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 12:59:31,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 12:59:31,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 12:59:31,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 12:59:31,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 12:59:31,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 12:59:31,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 12:59:31,422 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 12:59:31,646 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 12:59:31,649 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 12:59:32,115 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 12:59:32,116 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 12:59:32,287 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 12:59:32,287 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 12:59:32,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:59:32 BoogieIcfgContainer [2024-05-12 12:59:32,289 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 12:59:32,291 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 12:59:32,291 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 12:59:32,294 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 12:59:32,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:59:28" (1/4) ... [2024-05-12 12:59:32,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d2db18 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 12:59:32, skipping insertion in model container [2024-05-12 12:59:32,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 12:59:30" (2/4) ... [2024-05-12 12:59:32,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d2db18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 12:59:32, skipping insertion in model container [2024-05-12 12:59:32,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:59:31" (3/4) ... [2024-05-12 12:59:32,298 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d2db18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 12:59:32, skipping insertion in model container [2024-05-12 12:59:32,298 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:59:32" (4/4) ... [2024-05-12 12:59:32,299 INFO L112 eAbstractionObserver]: Analyzing ICFG mix002.opt.i [2024-05-12 12:59:32,344 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 12:59:32,344 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-05-12 12:59:32,344 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 12:59:32,407 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 12:59:32,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 51 transitions, 114 flow [2024-05-12 12:59:32,479 INFO L124 PetriNetUnfolderBase]: 1/48 cut-off events. [2024-05-12 12:59:32,479 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 12:59:32,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 48 events. 1/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 88 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2024-05-12 12:59:32,484 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 51 transitions, 114 flow [2024-05-12 12:59:32,489 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 48 transitions, 105 flow [2024-05-12 12:59:32,499 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 12:59:32,505 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;@1e77c82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 12:59:32,506 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-05-12 12:59:32,511 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 12:59:32,511 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 12:59:32,511 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 12:59:32,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:32,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 12:59:32,513 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:32,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:32,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1178448709, now seen corresponding path program 1 times [2024-05-12 12:59:32,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:32,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375255152] [2024-05-12 12:59:32,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:32,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:34,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:34,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:34,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375255152] [2024-05-12 12:59:34,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375255152] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:34,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:34,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 12:59:34,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277659198] [2024-05-12 12:59:34,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:34,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:59:34,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:34,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:59:34,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:59:34,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-05-12 12:59:34,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:34,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:34,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-05-12 12:59:34,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:35,349 INFO L124 PetriNetUnfolderBase]: 3005/4587 cut-off events. [2024-05-12 12:59:35,350 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-05-12 12:59:35,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9004 conditions, 4587 events. 3005/4587 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 27783 event pairs, 1755 based on Foata normal form. 176/4505 useless extension candidates. Maximal degree in co-relation 8989. Up to 4336 conditions per place. [2024-05-12 12:59:35,388 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 42 selfloop transitions, 5 changer transitions 0/62 dead transitions. [2024-05-12 12:59:35,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 233 flow [2024-05-12 12:59:35,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:59:35,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:59:35,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-05-12 12:59:35,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6928104575163399 [2024-05-12 12:59:35,403 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 105 flow. Second operand 3 states and 106 transitions. [2024-05-12 12:59:35,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 233 flow [2024-05-12 12:59:35,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 62 transitions, 228 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-05-12 12:59:35,414 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 137 flow [2024-05-12 12:59:35,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-05-12 12:59:35,420 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 0 predicate places. [2024-05-12 12:59:35,420 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 137 flow [2024-05-12 12:59:35,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:35,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:35,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:35,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 12:59:35,422 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:35,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:35,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1382187482, now seen corresponding path program 1 times [2024-05-12 12:59:35,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:35,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136107014] [2024-05-12 12:59:35,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:35,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:36,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:36,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:36,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136107014] [2024-05-12 12:59:36,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136107014] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:36,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:36,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 12:59:36,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25355165] [2024-05-12 12:59:36,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:36,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:59:36,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:36,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:59:36,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:59:37,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-05-12 12:59:37,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:37,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:37,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-05-12 12:59:37,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:37,708 INFO L124 PetriNetUnfolderBase]: 3428/5062 cut-off events. [2024-05-12 12:59:37,709 INFO L125 PetriNetUnfolderBase]: For 734/734 co-relation queries the response was YES. [2024-05-12 12:59:37,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11274 conditions, 5062 events. 3428/5062 cut-off events. For 734/734 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 29902 event pairs, 1673 based on Foata normal form. 3/4857 useless extension candidates. Maximal degree in co-relation 11259. Up to 4908 conditions per place. [2024-05-12 12:59:37,787 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 54 selfloop transitions, 9 changer transitions 0/77 dead transitions. [2024-05-12 12:59:37,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 77 transitions, 329 flow [2024-05-12 12:59:37,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 12:59:37,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 12:59:37,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-05-12 12:59:37,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2024-05-12 12:59:37,796 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 137 flow. Second operand 4 states and 134 transitions. [2024-05-12 12:59:37,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 77 transitions, 329 flow [2024-05-12 12:59:37,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 77 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:59:37,800 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 183 flow [2024-05-12 12:59:37,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2024-05-12 12:59:37,806 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 3 predicate places. [2024-05-12 12:59:37,806 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 183 flow [2024-05-12 12:59:37,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:37,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:37,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:37,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 12:59:37,807 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:37,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:37,816 INFO L85 PathProgramCache]: Analyzing trace with hash -101859998, now seen corresponding path program 1 times [2024-05-12 12:59:37,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:37,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348338518] [2024-05-12 12:59:37,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:37,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:39,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:39,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:39,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348338518] [2024-05-12 12:59:39,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348338518] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:39,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:39,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:59:39,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437376091] [2024-05-12 12:59:39,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:39,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:59:39,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:39,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:59:39,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:59:39,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 51 [2024-05-12 12:59:39,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 183 flow. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:39,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:39,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 51 [2024-05-12 12:59:39,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:40,566 INFO L124 PetriNetUnfolderBase]: 4170/6247 cut-off events. [2024-05-12 12:59:40,566 INFO L125 PetriNetUnfolderBase]: For 2408/2408 co-relation queries the response was YES. [2024-05-12 12:59:40,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15033 conditions, 6247 events. 4170/6247 cut-off events. For 2408/2408 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 37751 event pairs, 2003 based on Foata normal form. 3/5983 useless extension candidates. Maximal degree in co-relation 15016. Up to 5928 conditions per place. [2024-05-12 12:59:40,625 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 66 selfloop transitions, 13 changer transitions 0/92 dead transitions. [2024-05-12 12:59:40,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 92 transitions, 439 flow [2024-05-12 12:59:40,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:59:40,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:59:40,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-05-12 12:59:40,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6352941176470588 [2024-05-12 12:59:40,631 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 183 flow. Second operand 5 states and 162 transitions. [2024-05-12 12:59:40,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 92 transitions, 439 flow [2024-05-12 12:59:40,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 92 transitions, 420 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-05-12 12:59:40,637 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 229 flow [2024-05-12 12:59:40,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=229, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2024-05-12 12:59:40,639 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 6 predicate places. [2024-05-12 12:59:40,639 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 229 flow [2024-05-12 12:59:40,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:40,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:40,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:40,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 12:59:40,640 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:40,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:40,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1137308409, now seen corresponding path program 1 times [2024-05-12 12:59:40,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:40,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383362924] [2024-05-12 12:59:40,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:40,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:42,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:42,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:42,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383362924] [2024-05-12 12:59:42,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383362924] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:42,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:42,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:59:42,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16251332] [2024-05-12 12:59:42,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:42,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 12:59:42,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:42,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 12:59:42,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-05-12 12:59:42,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 51 [2024-05-12 12:59:42,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 229 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:42,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:42,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 51 [2024-05-12 12:59:42,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:43,897 INFO L124 PetriNetUnfolderBase]: 4163/6923 cut-off events. [2024-05-12 12:59:43,898 INFO L125 PetriNetUnfolderBase]: For 4780/4780 co-relation queries the response was YES. [2024-05-12 12:59:43,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16997 conditions, 6923 events. 4163/6923 cut-off events. For 4780/4780 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 47291 event pairs, 2406 based on Foata normal form. 3/6475 useless extension candidates. Maximal degree in co-relation 16979. Up to 5895 conditions per place. [2024-05-12 12:59:43,949 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 77 selfloop transitions, 17 changer transitions 0/107 dead transitions. [2024-05-12 12:59:43,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 107 transitions, 547 flow [2024-05-12 12:59:43,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:59:43,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:59:43,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 193 transitions. [2024-05-12 12:59:43,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.630718954248366 [2024-05-12 12:59:43,952 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 229 flow. Second operand 6 states and 193 transitions. [2024-05-12 12:59:43,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 107 transitions, 547 flow [2024-05-12 12:59:43,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 107 transitions, 514 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-05-12 12:59:43,959 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 275 flow [2024-05-12 12:59:43,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=275, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2024-05-12 12:59:43,961 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 9 predicate places. [2024-05-12 12:59:43,962 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 275 flow [2024-05-12 12:59:43,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:43,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:43,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:43,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 12:59:43,963 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:43,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:43,964 INFO L85 PathProgramCache]: Analyzing trace with hash 405753524, now seen corresponding path program 1 times [2024-05-12 12:59:43,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:43,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330371421] [2024-05-12 12:59:43,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:43,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:43,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:44,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:44,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:44,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330371421] [2024-05-12 12:59:44,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330371421] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:44,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:44,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:59:44,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947580426] [2024-05-12 12:59:44,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:44,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 12:59:44,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:44,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 12:59:44,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 12:59:45,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2024-05-12 12:59:45,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 275 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:45,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:45,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2024-05-12 12:59:45,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:46,382 INFO L124 PetriNetUnfolderBase]: 5714/8586 cut-off events. [2024-05-12 12:59:46,386 INFO L125 PetriNetUnfolderBase]: For 8424/8424 co-relation queries the response was YES. [2024-05-12 12:59:46,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23586 conditions, 8586 events. 5714/8586 cut-off events. For 8424/8424 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 52352 event pairs, 2389 based on Foata normal form. 2/8215 useless extension candidates. Maximal degree in co-relation 23567. Up to 8093 conditions per place. [2024-05-12 12:59:46,460 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 65 selfloop transitions, 10 changer transitions 0/88 dead transitions. [2024-05-12 12:59:46,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 88 transitions, 499 flow [2024-05-12 12:59:46,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:59:46,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:59:46,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 141 transitions. [2024-05-12 12:59:46,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5529411764705883 [2024-05-12 12:59:46,465 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 275 flow. Second operand 5 states and 141 transitions. [2024-05-12 12:59:46,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 88 transitions, 499 flow [2024-05-12 12:59:46,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 88 transitions, 452 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-05-12 12:59:46,473 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 291 flow [2024-05-12 12:59:46,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=291, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2024-05-12 12:59:46,475 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2024-05-12 12:59:46,475 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 291 flow [2024-05-12 12:59:46,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:46,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:46,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:46,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 12:59:46,476 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:46,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:46,477 INFO L85 PathProgramCache]: Analyzing trace with hash -306541826, now seen corresponding path program 1 times [2024-05-12 12:59:46,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:46,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542959096] [2024-05-12 12:59:46,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:46,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:47,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:47,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:47,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542959096] [2024-05-12 12:59:47,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542959096] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:47,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:47,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:59:47,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366714302] [2024-05-12 12:59:47,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:47,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:59:47,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:47,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:59:47,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:59:47,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2024-05-12 12:59:47,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 291 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:47,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:47,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2024-05-12 12:59:47,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:49,174 INFO L124 PetriNetUnfolderBase]: 5708/8663 cut-off events. [2024-05-12 12:59:49,174 INFO L125 PetriNetUnfolderBase]: For 11139/11139 co-relation queries the response was YES. [2024-05-12 12:59:49,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25053 conditions, 8663 events. 5708/8663 cut-off events. For 11139/11139 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 53081 event pairs, 2285 based on Foata normal form. 4/8328 useless extension candidates. Maximal degree in co-relation 25032. Up to 8039 conditions per place. [2024-05-12 12:59:49,234 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 74 selfloop transitions, 16 changer transitions 0/103 dead transitions. [2024-05-12 12:59:49,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 103 transitions, 581 flow [2024-05-12 12:59:49,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:59:49,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:59:49,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-05-12 12:59:49,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210084033613446 [2024-05-12 12:59:49,237 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 291 flow. Second operand 7 states and 186 transitions. [2024-05-12 12:59:49,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 103 transitions, 581 flow [2024-05-12 12:59:49,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 103 transitions, 546 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-05-12 12:59:49,244 INFO L231 Difference]: Finished difference. Result has 72 places, 73 transitions, 352 flow [2024-05-12 12:59:49,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=352, PETRI_PLACES=72, PETRI_TRANSITIONS=73} [2024-05-12 12:59:49,245 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 15 predicate places. [2024-05-12 12:59:49,245 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 73 transitions, 352 flow [2024-05-12 12:59:49,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:49,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:49,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:49,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 12:59:49,246 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:49,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:49,246 INFO L85 PathProgramCache]: Analyzing trace with hash -306853015, now seen corresponding path program 1 times [2024-05-12 12:59:49,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:49,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438998341] [2024-05-12 12:59:49,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:49,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:49,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:49,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:49,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438998341] [2024-05-12 12:59:49,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438998341] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:49,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:49,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 12:59:49,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927805934] [2024-05-12 12:59:49,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:49,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:59:49,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:49,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:59:49,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:59:49,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 51 [2024-05-12 12:59:49,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 73 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:49,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:49,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 51 [2024-05-12 12:59:49,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:49,878 INFO L124 PetriNetUnfolderBase]: 1690/3618 cut-off events. [2024-05-12 12:59:49,878 INFO L125 PetriNetUnfolderBase]: For 5590/5911 co-relation queries the response was YES. [2024-05-12 12:59:49,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8454 conditions, 3618 events. 1690/3618 cut-off events. For 5590/5911 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 29989 event pairs, 586 based on Foata normal form. 2/3308 useless extension candidates. Maximal degree in co-relation 8431. Up to 2251 conditions per place. [2024-05-12 12:59:49,914 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 29 selfloop transitions, 8 changer transitions 0/74 dead transitions. [2024-05-12 12:59:49,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 74 transitions, 389 flow [2024-05-12 12:59:49,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:59:49,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:59:49,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2024-05-12 12:59:49,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7320261437908496 [2024-05-12 12:59:49,916 INFO L175 Difference]: Start difference. First operand has 72 places, 73 transitions, 352 flow. Second operand 3 states and 112 transitions. [2024-05-12 12:59:49,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 74 transitions, 389 flow [2024-05-12 12:59:49,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 74 transitions, 355 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-05-12 12:59:49,922 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 281 flow [2024-05-12 12:59:49,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=281, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2024-05-12 12:59:49,924 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 12 predicate places. [2024-05-12 12:59:49,924 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 281 flow [2024-05-12 12:59:49,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:49,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:49,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:49,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 12:59:49,925 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:49,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:49,926 INFO L85 PathProgramCache]: Analyzing trace with hash -90244235, now seen corresponding path program 1 times [2024-05-12 12:59:49,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:49,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963928314] [2024-05-12 12:59:49,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:49,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:51,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:51,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:51,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963928314] [2024-05-12 12:59:51,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963928314] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:51,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:51,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:59:51,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415730181] [2024-05-12 12:59:51,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:51,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:59:51,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:51,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:59:51,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:59:51,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-05-12 12:59:51,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 281 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:51,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:51,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-05-12 12:59:51,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:52,560 INFO L124 PetriNetUnfolderBase]: 5695/8332 cut-off events. [2024-05-12 12:59:52,560 INFO L125 PetriNetUnfolderBase]: For 17749/17753 co-relation queries the response was YES. [2024-05-12 12:59:52,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24785 conditions, 8332 events. 5695/8332 cut-off events. For 17749/17753 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 48292 event pairs, 2299 based on Foata normal form. 6/8334 useless extension candidates. Maximal degree in co-relation 24763. Up to 8056 conditions per place. [2024-05-12 12:59:52,616 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 76 selfloop transitions, 17 changer transitions 1/106 dead transitions. [2024-05-12 12:59:52,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 106 transitions, 621 flow [2024-05-12 12:59:52,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:59:52,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:59:52,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 167 transitions. [2024-05-12 12:59:52,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.545751633986928 [2024-05-12 12:59:52,618 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 281 flow. Second operand 6 states and 167 transitions. [2024-05-12 12:59:52,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 106 transitions, 621 flow [2024-05-12 12:59:52,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 106 transitions, 601 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 12:59:52,625 INFO L231 Difference]: Finished difference. Result has 73 places, 72 transitions, 357 flow [2024-05-12 12:59:52,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=357, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2024-05-12 12:59:52,627 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 16 predicate places. [2024-05-12 12:59:52,627 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 357 flow [2024-05-12 12:59:52,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:52,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:52,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:52,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 12:59:52,628 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:52,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:52,629 INFO L85 PathProgramCache]: Analyzing trace with hash -82595915, now seen corresponding path program 2 times [2024-05-12 12:59:52,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:52,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485827171] [2024-05-12 12:59:52,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:52,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:53,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:53,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:53,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485827171] [2024-05-12 12:59:53,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485827171] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:53,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:53,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:59:53,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171125204] [2024-05-12 12:59:53,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:53,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:59:53,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:53,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:59:53,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:59:53,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-05-12 12:59:53,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 357 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:53,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:53,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-05-12 12:59:53,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:54,929 INFO L124 PetriNetUnfolderBase]: 5690/8325 cut-off events. [2024-05-12 12:59:54,929 INFO L125 PetriNetUnfolderBase]: For 20612/20618 co-relation queries the response was YES. [2024-05-12 12:59:54,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25888 conditions, 8325 events. 5690/8325 cut-off events. For 20612/20618 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 48304 event pairs, 2301 based on Foata normal form. 8/8329 useless extension candidates. Maximal degree in co-relation 25864. Up to 8051 conditions per place. [2024-05-12 12:59:54,973 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 72 selfloop transitions, 16 changer transitions 2/102 dead transitions. [2024-05-12 12:59:54,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 102 transitions, 607 flow [2024-05-12 12:59:54,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:59:54,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:59:54,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2024-05-12 12:59:54,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2024-05-12 12:59:54,975 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 357 flow. Second operand 6 states and 162 transitions. [2024-05-12 12:59:54,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 102 transitions, 607 flow [2024-05-12 12:59:54,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 102 transitions, 570 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-05-12 12:59:54,990 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 360 flow [2024-05-12 12:59:54,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=360, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2024-05-12 12:59:54,991 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 20 predicate places. [2024-05-12 12:59:54,992 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 360 flow [2024-05-12 12:59:54,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:54,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:54,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:54,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 12:59:54,995 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:54,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:54,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1430178370, now seen corresponding path program 1 times [2024-05-12 12:59:54,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:54,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601991241] [2024-05-12 12:59:54,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:54,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:57,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:57,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:57,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601991241] [2024-05-12 12:59:57,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601991241] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:57,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:57,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:59:57,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598859353] [2024-05-12 12:59:57,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:57,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:59:57,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:57,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:59:57,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:59:57,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2024-05-12 12:59:57,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 360 flow. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:57,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:57,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2024-05-12 12:59:57,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:58,722 INFO L124 PetriNetUnfolderBase]: 4958/7968 cut-off events. [2024-05-12 12:59:58,722 INFO L125 PetriNetUnfolderBase]: For 22224/22244 co-relation queries the response was YES. [2024-05-12 12:59:58,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23771 conditions, 7968 events. 4958/7968 cut-off events. For 22224/22244 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 51822 event pairs, 1660 based on Foata normal form. 6/7720 useless extension candidates. Maximal degree in co-relation 23745. Up to 6932 conditions per place. [2024-05-12 12:59:58,764 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 104 selfloop transitions, 19 changer transitions 1/139 dead transitions. [2024-05-12 12:59:58,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 139 transitions, 790 flow [2024-05-12 12:59:58,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:59:58,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:59:58,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 237 transitions. [2024-05-12 12:59:58,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5808823529411765 [2024-05-12 12:59:58,767 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 360 flow. Second operand 8 states and 237 transitions. [2024-05-12 12:59:58,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 139 transitions, 790 flow [2024-05-12 12:59:58,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 139 transitions, 749 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-05-12 12:59:58,779 INFO L231 Difference]: Finished difference. Result has 80 places, 76 transitions, 400 flow [2024-05-12 12:59:58,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=400, PETRI_PLACES=80, PETRI_TRANSITIONS=76} [2024-05-12 12:59:58,780 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 23 predicate places. [2024-05-12 12:59:58,780 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 76 transitions, 400 flow [2024-05-12 12:59:58,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:58,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:58,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:58,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 12:59:58,781 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:58,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:58,782 INFO L85 PathProgramCache]: Analyzing trace with hash -95450127, now seen corresponding path program 1 times [2024-05-12 12:59:58,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:58,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718729521] [2024-05-12 12:59:58,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:58,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:59,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:59,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:59,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718729521] [2024-05-12 12:59:59,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718729521] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:59,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:59,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:59:59,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159052358] [2024-05-12 12:59:59,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:59,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:59:59,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:59,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:59:59,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:00:00,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:00:00,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 76 transitions, 400 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:00,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:00,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:00:00,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:01,237 INFO L124 PetriNetUnfolderBase]: 6000/8667 cut-off events. [2024-05-12 13:00:01,237 INFO L125 PetriNetUnfolderBase]: For 29242/29246 co-relation queries the response was YES. [2024-05-12 13:00:01,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28633 conditions, 8667 events. 6000/8667 cut-off events. For 29242/29246 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 49112 event pairs, 1811 based on Foata normal form. 6/8669 useless extension candidates. Maximal degree in co-relation 28606. Up to 8370 conditions per place. [2024-05-12 13:00:01,297 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 88 selfloop transitions, 25 changer transitions 5/128 dead transitions. [2024-05-12 13:00:01,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 128 transitions, 838 flow [2024-05-12 13:00:01,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:00:01,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:00:01,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-05-12 13:00:01,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5322128851540616 [2024-05-12 13:00:01,301 INFO L175 Difference]: Start difference. First operand has 80 places, 76 transitions, 400 flow. Second operand 7 states and 190 transitions. [2024-05-12 13:00:01,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 128 transitions, 838 flow [2024-05-12 13:00:01,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 128 transitions, 783 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-05-12 13:00:01,325 INFO L231 Difference]: Finished difference. Result has 82 places, 81 transitions, 463 flow [2024-05-12 13:00:01,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=463, PETRI_PLACES=82, PETRI_TRANSITIONS=81} [2024-05-12 13:00:01,326 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 25 predicate places. [2024-05-12 13:00:01,326 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 463 flow [2024-05-12 13:00:01,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:01,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:01,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:01,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 13:00:01,327 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:01,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:01,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1529592647, now seen corresponding path program 2 times [2024-05-12 13:00:01,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:01,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963549658] [2024-05-12 13:00:01,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:01,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:02,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:02,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:02,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963549658] [2024-05-12 13:00:02,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963549658] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:02,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:02,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:00:02,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132503214] [2024-05-12 13:00:02,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:02,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:00:02,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:02,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:00:02,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:00:02,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:00:02,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 463 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:02,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:02,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:00:02,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:03,672 INFO L124 PetriNetUnfolderBase]: 5268/7636 cut-off events. [2024-05-12 13:00:03,672 INFO L125 PetriNetUnfolderBase]: For 32881/32885 co-relation queries the response was YES. [2024-05-12 13:00:03,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26737 conditions, 7636 events. 5268/7636 cut-off events. For 32881/32885 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 42521 event pairs, 1623 based on Foata normal form. 6/7638 useless extension candidates. Maximal degree in co-relation 26708. Up to 7359 conditions per place. [2024-05-12 13:00:03,724 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 86 selfloop transitions, 27 changer transitions 0/123 dead transitions. [2024-05-12 13:00:03,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 123 transitions, 855 flow [2024-05-12 13:00:03,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:00:03,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:00:03,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-05-12 13:00:03,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5126050420168067 [2024-05-12 13:00:03,726 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 463 flow. Second operand 7 states and 183 transitions. [2024-05-12 13:00:03,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 123 transitions, 855 flow [2024-05-12 13:00:03,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 123 transitions, 805 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-05-12 13:00:03,831 INFO L231 Difference]: Finished difference. Result has 85 places, 84 transitions, 509 flow [2024-05-12 13:00:03,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=509, PETRI_PLACES=85, PETRI_TRANSITIONS=84} [2024-05-12 13:00:03,832 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 28 predicate places. [2024-05-12 13:00:03,832 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 84 transitions, 509 flow [2024-05-12 13:00:03,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:03,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:03,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:03,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 13:00:03,833 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:03,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:03,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1529592895, now seen corresponding path program 1 times [2024-05-12 13:00:03,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:03,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348512235] [2024-05-12 13:00:03,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:03,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:05,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:05,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:05,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348512235] [2024-05-12 13:00:05,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348512235] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:05,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:05,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:00:05,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239884838] [2024-05-12 13:00:05,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:05,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:00:05,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:05,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:00:05,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:00:05,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-05-12 13:00:05,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 509 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 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) [2024-05-12 13:00:05,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:05,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-05-12 13:00:05,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:06,447 INFO L124 PetriNetUnfolderBase]: 5066/7467 cut-off events. [2024-05-12 13:00:06,447 INFO L125 PetriNetUnfolderBase]: For 36182/36186 co-relation queries the response was YES. [2024-05-12 13:00:06,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26373 conditions, 7467 events. 5066/7467 cut-off events. For 36182/36186 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 42738 event pairs, 1509 based on Foata normal form. 5/7465 useless extension candidates. Maximal degree in co-relation 26342. Up to 7025 conditions per place. [2024-05-12 13:00:06,495 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 93 selfloop transitions, 24 changer transitions 0/132 dead transitions. [2024-05-12 13:00:06,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 132 transitions, 945 flow [2024-05-12 13:00:06,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:00:06,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:00:06,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-05-12 13:00:06,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5378151260504201 [2024-05-12 13:00:06,497 INFO L175 Difference]: Start difference. First operand has 85 places, 84 transitions, 509 flow. Second operand 7 states and 192 transitions. [2024-05-12 13:00:06,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 132 transitions, 945 flow [2024-05-12 13:00:06,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 132 transitions, 890 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-05-12 13:00:06,520 INFO L231 Difference]: Finished difference. Result has 88 places, 90 transitions, 576 flow [2024-05-12 13:00:06,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=576, PETRI_PLACES=88, PETRI_TRANSITIONS=90} [2024-05-12 13:00:06,520 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 31 predicate places. [2024-05-12 13:00:06,521 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 90 transitions, 576 flow [2024-05-12 13:00:06,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 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) [2024-05-12 13:00:06,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:06,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:06,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 13:00:06,521 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:06,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:06,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1753263079, now seen corresponding path program 2 times [2024-05-12 13:00:06,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:06,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424243004] [2024-05-12 13:00:06,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:06,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:07,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:07,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:07,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424243004] [2024-05-12 13:00:07,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424243004] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:07,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:07,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:00:07,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825735440] [2024-05-12 13:00:07,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:07,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:00:07,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:07,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:00:07,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:00:07,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-05-12 13:00:07,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 90 transitions, 576 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 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) [2024-05-12 13:00:07,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:07,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-05-12 13:00:07,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:08,970 INFO L124 PetriNetUnfolderBase]: 5112/7526 cut-off events. [2024-05-12 13:00:08,970 INFO L125 PetriNetUnfolderBase]: For 43036/43046 co-relation queries the response was YES. [2024-05-12 13:00:08,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27859 conditions, 7526 events. 5112/7526 cut-off events. For 43036/43046 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 42837 event pairs, 1493 based on Foata normal form. 12/7533 useless extension candidates. Maximal degree in co-relation 27827. Up to 7064 conditions per place. [2024-05-12 13:00:09,018 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 92 selfloop transitions, 26 changer transitions 0/133 dead transitions. [2024-05-12 13:00:09,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 133 transitions, 988 flow [2024-05-12 13:00:09,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:00:09,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:00:09,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-05-12 13:00:09,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2024-05-12 13:00:09,027 INFO L175 Difference]: Start difference. First operand has 88 places, 90 transitions, 576 flow. Second operand 7 states and 189 transitions. [2024-05-12 13:00:09,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 133 transitions, 988 flow [2024-05-12 13:00:09,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 133 transitions, 949 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-05-12 13:00:09,064 INFO L231 Difference]: Finished difference. Result has 92 places, 93 transitions, 633 flow [2024-05-12 13:00:09,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=633, PETRI_PLACES=92, PETRI_TRANSITIONS=93} [2024-05-12 13:00:09,065 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 35 predicate places. [2024-05-12 13:00:09,065 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 93 transitions, 633 flow [2024-05-12 13:00:09,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 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) [2024-05-12 13:00:09,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:09,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:09,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 13:00:09,066 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:09,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:09,066 INFO L85 PathProgramCache]: Analyzing trace with hash -88783887, now seen corresponding path program 3 times [2024-05-12 13:00:09,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:09,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744702644] [2024-05-12 13:00:09,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:09,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:10,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:10,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:10,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744702644] [2024-05-12 13:00:10,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744702644] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:10,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:10,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:00:10,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143284648] [2024-05-12 13:00:10,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:10,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:00:10,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:10,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:00:10,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:00:10,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:00:10,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 93 transitions, 633 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:10,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:10,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:00:10,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:11,375 INFO L124 PetriNetUnfolderBase]: 5355/7782 cut-off events. [2024-05-12 13:00:11,376 INFO L125 PetriNetUnfolderBase]: For 47826/47838 co-relation queries the response was YES. [2024-05-12 13:00:11,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29346 conditions, 7782 events. 5355/7782 cut-off events. For 47826/47838 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 43398 event pairs, 1598 based on Foata normal form. 9/7785 useless extension candidates. Maximal degree in co-relation 29312. Up to 7482 conditions per place. [2024-05-12 13:00:11,428 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 92 selfloop transitions, 26 changer transitions 0/128 dead transitions. [2024-05-12 13:00:11,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 128 transitions, 951 flow [2024-05-12 13:00:11,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:00:11,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:00:11,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-05-12 13:00:11,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49859943977591037 [2024-05-12 13:00:11,430 INFO L175 Difference]: Start difference. First operand has 92 places, 93 transitions, 633 flow. Second operand 7 states and 178 transitions. [2024-05-12 13:00:11,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 128 transitions, 951 flow [2024-05-12 13:00:11,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 128 transitions, 858 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-05-12 13:00:11,468 INFO L231 Difference]: Finished difference. Result has 94 places, 93 transitions, 600 flow [2024-05-12 13:00:11,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=600, PETRI_PLACES=94, PETRI_TRANSITIONS=93} [2024-05-12 13:00:11,469 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 37 predicate places. [2024-05-12 13:00:11,469 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 93 transitions, 600 flow [2024-05-12 13:00:11,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:11,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:11,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:11,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 13:00:11,470 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:11,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:11,470 INFO L85 PathProgramCache]: Analyzing trace with hash -88775269, now seen corresponding path program 3 times [2024-05-12 13:00:11,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:11,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864559783] [2024-05-12 13:00:11,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:11,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:12,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:12,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:12,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864559783] [2024-05-12 13:00:12,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864559783] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:12,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:12,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:00:12,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970847041] [2024-05-12 13:00:12,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:12,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:00:12,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:12,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:00:12,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:00:12,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-05-12 13:00:12,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 93 transitions, 600 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 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) [2024-05-12 13:00:12,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:12,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-05-12 13:00:12,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:13,702 INFO L124 PetriNetUnfolderBase]: 5098/7506 cut-off events. [2024-05-12 13:00:13,703 INFO L125 PetriNetUnfolderBase]: For 49371/49379 co-relation queries the response was YES. [2024-05-12 13:00:13,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28209 conditions, 7506 events. 5098/7506 cut-off events. For 49371/49379 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 42868 event pairs, 1493 based on Foata normal form. 10/7511 useless extension candidates. Maximal degree in co-relation 28174. Up to 7051 conditions per place. [2024-05-12 13:00:13,753 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 88 selfloop transitions, 27 changer transitions 0/130 dead transitions. [2024-05-12 13:00:13,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 130 transitions, 916 flow [2024-05-12 13:00:13,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:00:13,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:00:13,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-05-12 13:00:13,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182072829131653 [2024-05-12 13:00:13,755 INFO L175 Difference]: Start difference. First operand has 94 places, 93 transitions, 600 flow. Second operand 7 states and 185 transitions. [2024-05-12 13:00:13,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 130 transitions, 916 flow [2024-05-12 13:00:13,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 130 transitions, 821 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-05-12 13:00:13,806 INFO L231 Difference]: Finished difference. Result has 94 places, 93 transitions, 567 flow [2024-05-12 13:00:13,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=567, PETRI_PLACES=94, PETRI_TRANSITIONS=93} [2024-05-12 13:00:13,808 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 37 predicate places. [2024-05-12 13:00:13,808 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 93 transitions, 567 flow [2024-05-12 13:00:13,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 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) [2024-05-12 13:00:13,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:13,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:13,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-12 13:00:13,809 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:13,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:13,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1466968577, now seen corresponding path program 1 times [2024-05-12 13:00:13,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:13,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785432260] [2024-05-12 13:00:13,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:13,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:15,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:15,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:15,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785432260] [2024-05-12 13:00:15,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785432260] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:15,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:15,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:00:15,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013111043] [2024-05-12 13:00:15,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:15,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:00:15,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:15,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:00:15,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:00:15,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-05-12 13:00:15,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 93 transitions, 567 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:15,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:15,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-05-12 13:00:15,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:15,889 INFO L124 PetriNetUnfolderBase]: 3872/6805 cut-off events. [2024-05-12 13:00:15,889 INFO L125 PetriNetUnfolderBase]: For 47273/47312 co-relation queries the response was YES. [2024-05-12 13:00:15,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23858 conditions, 6805 events. 3872/6805 cut-off events. For 47273/47312 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 48559 event pairs, 1689 based on Foata normal form. 8/6627 useless extension candidates. Maximal degree in co-relation 23822. Up to 5601 conditions per place. [2024-05-12 13:00:15,939 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 78 selfloop transitions, 10 changer transitions 0/113 dead transitions. [2024-05-12 13:00:15,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 113 transitions, 820 flow [2024-05-12 13:00:15,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:00:15,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:00:15,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-05-12 13:00:15,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372549019607843 [2024-05-12 13:00:15,940 INFO L175 Difference]: Start difference. First operand has 94 places, 93 transitions, 567 flow. Second operand 5 states and 137 transitions. [2024-05-12 13:00:15,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 113 transitions, 820 flow [2024-05-12 13:00:15,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 113 transitions, 752 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-05-12 13:00:15,967 INFO L231 Difference]: Finished difference. Result has 94 places, 100 transitions, 592 flow [2024-05-12 13:00:15,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=592, PETRI_PLACES=94, PETRI_TRANSITIONS=100} [2024-05-12 13:00:15,968 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 37 predicate places. [2024-05-12 13:00:15,968 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 100 transitions, 592 flow [2024-05-12 13:00:15,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:15,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:15,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:15,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-05-12 13:00:15,969 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:15,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:15,969 INFO L85 PathProgramCache]: Analyzing trace with hash 167018482, now seen corresponding path program 1 times [2024-05-12 13:00:15,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:15,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435008389] [2024-05-12 13:00:15,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:15,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:17,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:17,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:17,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435008389] [2024-05-12 13:00:17,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435008389] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:17,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:17,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:00:17,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840008239] [2024-05-12 13:00:17,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:17,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:00:17,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:17,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:00:17,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:00:17,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:00:17,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 100 transitions, 592 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:17,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:17,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:00:17,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:18,751 INFO L124 PetriNetUnfolderBase]: 5370/8565 cut-off events. [2024-05-12 13:00:18,752 INFO L125 PetriNetUnfolderBase]: For 60260/60262 co-relation queries the response was YES. [2024-05-12 13:00:18,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31669 conditions, 8565 events. 5370/8565 cut-off events. For 60260/60262 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 54403 event pairs, 1786 based on Foata normal form. 4/8305 useless extension candidates. Maximal degree in co-relation 31631. Up to 7426 conditions per place. [2024-05-12 13:00:18,798 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 111 selfloop transitions, 38 changer transitions 0/159 dead transitions. [2024-05-12 13:00:18,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 159 transitions, 1160 flow [2024-05-12 13:00:18,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:00:18,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:00:18,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-05-12 13:00:18,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5220588235294118 [2024-05-12 13:00:18,800 INFO L175 Difference]: Start difference. First operand has 94 places, 100 transitions, 592 flow. Second operand 8 states and 213 transitions. [2024-05-12 13:00:18,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 159 transitions, 1160 flow [2024-05-12 13:00:18,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 159 transitions, 1134 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-05-12 13:00:18,826 INFO L231 Difference]: Finished difference. Result has 100 places, 106 transitions, 724 flow [2024-05-12 13:00:18,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=724, PETRI_PLACES=100, PETRI_TRANSITIONS=106} [2024-05-12 13:00:18,827 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 43 predicate places. [2024-05-12 13:00:18,827 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 106 transitions, 724 flow [2024-05-12 13:00:18,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:18,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:18,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:18,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-05-12 13:00:18,827 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:18,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:18,828 INFO L85 PathProgramCache]: Analyzing trace with hash 167168429, now seen corresponding path program 1 times [2024-05-12 13:00:18,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:18,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283817945] [2024-05-12 13:00:18,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:18,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:18,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:19,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:19,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:19,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283817945] [2024-05-12 13:00:19,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283817945] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:19,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:19,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:00:19,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33493377] [2024-05-12 13:00:19,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:19,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:00:19,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:19,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:00:19,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:00:20,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:00:20,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 106 transitions, 724 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:20,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:20,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:00:20,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:21,445 INFO L124 PetriNetUnfolderBase]: 5416/8644 cut-off events. [2024-05-12 13:00:21,445 INFO L125 PetriNetUnfolderBase]: For 69554/69556 co-relation queries the response was YES. [2024-05-12 13:00:21,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33343 conditions, 8644 events. 5416/8644 cut-off events. For 69554/69556 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 54882 event pairs, 1622 based on Foata normal form. 4/8377 useless extension candidates. Maximal degree in co-relation 33303. Up to 7285 conditions per place. [2024-05-12 13:00:21,502 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 113 selfloop transitions, 43 changer transitions 0/166 dead transitions. [2024-05-12 13:00:21,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 166 transitions, 1312 flow [2024-05-12 13:00:21,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:00:21,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:00:21,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-05-12 13:00:21,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2024-05-12 13:00:21,504 INFO L175 Difference]: Start difference. First operand has 100 places, 106 transitions, 724 flow. Second operand 8 states and 216 transitions. [2024-05-12 13:00:21,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 166 transitions, 1312 flow [2024-05-12 13:00:21,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 166 transitions, 1235 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-05-12 13:00:21,542 INFO L231 Difference]: Finished difference. Result has 104 places, 112 transitions, 819 flow [2024-05-12 13:00:21,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=819, PETRI_PLACES=104, PETRI_TRANSITIONS=112} [2024-05-12 13:00:21,542 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 47 predicate places. [2024-05-12 13:00:21,543 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 112 transitions, 819 flow [2024-05-12 13:00:21,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:21,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:21,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:21,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-05-12 13:00:21,543 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:21,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:21,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1336013960, now seen corresponding path program 2 times [2024-05-12 13:00:21,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:21,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457386706] [2024-05-12 13:00:21,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:21,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:22,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:22,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:22,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457386706] [2024-05-12 13:00:22,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457386706] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:22,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:22,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:00:22,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901159488] [2024-05-12 13:00:22,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:22,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:00:22,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:22,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:00:22,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:00:22,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:00:22,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 112 transitions, 819 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:22,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:22,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:00:22,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:24,202 INFO L124 PetriNetUnfolderBase]: 5439/8660 cut-off events. [2024-05-12 13:00:24,202 INFO L125 PetriNetUnfolderBase]: For 77552/77554 co-relation queries the response was YES. [2024-05-12 13:00:24,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34531 conditions, 8660 events. 5439/8660 cut-off events. For 77552/77554 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 54926 event pairs, 1740 based on Foata normal form. 4/8402 useless extension candidates. Maximal degree in co-relation 34489. Up to 7514 conditions per place. [2024-05-12 13:00:24,265 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 116 selfloop transitions, 39 changer transitions 0/165 dead transitions. [2024-05-12 13:00:24,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 165 transitions, 1359 flow [2024-05-12 13:00:24,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:00:24,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:00:24,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-05-12 13:00:24,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171568627450981 [2024-05-12 13:00:24,266 INFO L175 Difference]: Start difference. First operand has 104 places, 112 transitions, 819 flow. Second operand 8 states and 211 transitions. [2024-05-12 13:00:24,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 165 transitions, 1359 flow [2024-05-12 13:00:24,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 165 transitions, 1286 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-05-12 13:00:24,330 INFO L231 Difference]: Finished difference. Result has 108 places, 115 transitions, 862 flow [2024-05-12 13:00:24,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=862, PETRI_PLACES=108, PETRI_TRANSITIONS=115} [2024-05-12 13:00:24,331 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 51 predicate places. [2024-05-12 13:00:24,331 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 115 transitions, 862 flow [2024-05-12 13:00:24,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:24,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:24,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:24,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-05-12 13:00:24,332 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:24,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:24,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1341578150, now seen corresponding path program 3 times [2024-05-12 13:00:24,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:24,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292188481] [2024-05-12 13:00:24,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:24,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:25,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:25,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:25,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292188481] [2024-05-12 13:00:25,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292188481] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:25,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:25,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:00:25,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099160367] [2024-05-12 13:00:25,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:25,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:00:25,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:25,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:00:25,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:00:25,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:00:25,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 115 transitions, 862 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:25,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:25,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:00:25,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:27,041 INFO L124 PetriNetUnfolderBase]: 5462/8696 cut-off events. [2024-05-12 13:00:27,042 INFO L125 PetriNetUnfolderBase]: For 82553/82555 co-relation queries the response was YES. [2024-05-12 13:00:27,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35051 conditions, 8696 events. 5462/8696 cut-off events. For 82553/82555 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 55087 event pairs, 1756 based on Foata normal form. 4/8435 useless extension candidates. Maximal degree in co-relation 35007. Up to 7538 conditions per place. [2024-05-12 13:00:27,111 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 114 selfloop transitions, 41 changer transitions 0/165 dead transitions. [2024-05-12 13:00:27,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 165 transitions, 1402 flow [2024-05-12 13:00:27,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:00:27,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:00:27,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-05-12 13:00:27,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5122549019607843 [2024-05-12 13:00:27,112 INFO L175 Difference]: Start difference. First operand has 108 places, 115 transitions, 862 flow. Second operand 8 states and 209 transitions. [2024-05-12 13:00:27,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 165 transitions, 1402 flow [2024-05-12 13:00:27,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 165 transitions, 1322 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-05-12 13:00:27,166 INFO L231 Difference]: Finished difference. Result has 111 places, 118 transitions, 908 flow [2024-05-12 13:00:27,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=908, PETRI_PLACES=111, PETRI_TRANSITIONS=118} [2024-05-12 13:00:27,166 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 54 predicate places. [2024-05-12 13:00:27,166 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 118 transitions, 908 flow [2024-05-12 13:00:27,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:27,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:27,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:27,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-05-12 13:00:27,167 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:27,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:27,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1352258883, now seen corresponding path program 2 times [2024-05-12 13:00:27,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:27,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046445286] [2024-05-12 13:00:27,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:27,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:28,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:28,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:28,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046445286] [2024-05-12 13:00:28,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046445286] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:28,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:28,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:00:28,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075728896] [2024-05-12 13:00:28,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:28,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:00:28,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:28,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:00:28,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:00:28,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:00:28,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 118 transitions, 908 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:28,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:28,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:00:28,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:29,866 INFO L124 PetriNetUnfolderBase]: 5564/8859 cut-off events. [2024-05-12 13:00:29,866 INFO L125 PetriNetUnfolderBase]: For 91082/91084 co-relation queries the response was YES. [2024-05-12 13:00:29,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36165 conditions, 8859 events. 5564/8859 cut-off events. For 91082/91084 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 56185 event pairs, 1637 based on Foata normal form. 4/8594 useless extension candidates. Maximal degree in co-relation 36120. Up to 7435 conditions per place. [2024-05-12 13:00:29,916 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 120 selfloop transitions, 47 changer transitions 0/177 dead transitions. [2024-05-12 13:00:29,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 177 transitions, 1602 flow [2024-05-12 13:00:29,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:00:29,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:00:29,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-05-12 13:00:29,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2024-05-12 13:00:29,918 INFO L175 Difference]: Start difference. First operand has 111 places, 118 transitions, 908 flow. Second operand 8 states and 216 transitions. [2024-05-12 13:00:29,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 177 transitions, 1602 flow [2024-05-12 13:00:29,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 177 transitions, 1524 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-05-12 13:00:29,973 INFO L231 Difference]: Finished difference. Result has 114 places, 124 transitions, 1004 flow [2024-05-12 13:00:29,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1004, PETRI_PLACES=114, PETRI_TRANSITIONS=124} [2024-05-12 13:00:29,973 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 57 predicate places. [2024-05-12 13:00:29,973 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 124 transitions, 1004 flow [2024-05-12 13:00:29,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:29,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:29,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:29,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-05-12 13:00:29,974 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:29,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:29,974 INFO L85 PathProgramCache]: Analyzing trace with hash 172732619, now seen corresponding path program 3 times [2024-05-12 13:00:29,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:29,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989297056] [2024-05-12 13:00:29,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:29,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:30,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:30,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:30,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989297056] [2024-05-12 13:00:30,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989297056] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:30,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:30,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:00:30,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075155466] [2024-05-12 13:00:30,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:30,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:00:30,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:30,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:00:30,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:00:31,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:00:31,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 124 transitions, 1004 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:31,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:31,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:00:31,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:32,463 INFO L124 PetriNetUnfolderBase]: 5554/8838 cut-off events. [2024-05-12 13:00:32,463 INFO L125 PetriNetUnfolderBase]: For 96947/96949 co-relation queries the response was YES. [2024-05-12 13:00:32,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36483 conditions, 8838 events. 5554/8838 cut-off events. For 96947/96949 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 55953 event pairs, 1624 based on Foata normal form. 4/8573 useless extension candidates. Maximal degree in co-relation 36437. Up to 7427 conditions per place. [2024-05-12 13:00:32,526 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 120 selfloop transitions, 46 changer transitions 0/176 dead transitions. [2024-05-12 13:00:32,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 176 transitions, 1548 flow [2024-05-12 13:00:32,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:00:32,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:00:32,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-05-12 13:00:32,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2024-05-12 13:00:32,527 INFO L175 Difference]: Start difference. First operand has 114 places, 124 transitions, 1004 flow. Second operand 8 states and 216 transitions. [2024-05-12 13:00:32,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 176 transitions, 1548 flow [2024-05-12 13:00:32,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 176 transitions, 1442 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-05-12 13:00:32,602 INFO L231 Difference]: Finished difference. Result has 118 places, 124 transitions, 998 flow [2024-05-12 13:00:32,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=998, PETRI_PLACES=118, PETRI_TRANSITIONS=124} [2024-05-12 13:00:32,602 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 61 predicate places. [2024-05-12 13:00:32,603 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 124 transitions, 998 flow [2024-05-12 13:00:32,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:32,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:32,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:32,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-05-12 13:00:32,603 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:32,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:32,603 INFO L85 PathProgramCache]: Analyzing trace with hash -2056040289, now seen corresponding path program 4 times [2024-05-12 13:00:32,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:32,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86358843] [2024-05-12 13:00:32,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:32,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:33,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:33,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:33,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86358843] [2024-05-12 13:00:33,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86358843] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:33,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:33,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:00:33,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686782538] [2024-05-12 13:00:33,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:33,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:00:33,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:33,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:00:33,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:00:33,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:00:33,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 124 transitions, 998 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:33,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:33,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:00:33,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:35,180 INFO L124 PetriNetUnfolderBase]: 5600/8242 cut-off events. [2024-05-12 13:00:35,180 INFO L125 PetriNetUnfolderBase]: For 103687/103697 co-relation queries the response was YES. [2024-05-12 13:00:35,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36304 conditions, 8242 events. 5600/8242 cut-off events. For 103687/103697 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 47274 event pairs, 1427 based on Foata normal form. 9/8204 useless extension candidates. Maximal degree in co-relation 36257. Up to 7466 conditions per place. [2024-05-12 13:00:35,244 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 114 selfloop transitions, 51 changer transitions 0/175 dead transitions. [2024-05-12 13:00:35,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 175 transitions, 1579 flow [2024-05-12 13:00:35,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:00:35,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:00:35,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-05-12 13:00:35,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5122549019607843 [2024-05-12 13:00:35,245 INFO L175 Difference]: Start difference. First operand has 118 places, 124 transitions, 998 flow. Second operand 8 states and 209 transitions. [2024-05-12 13:00:35,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 175 transitions, 1579 flow [2024-05-12 13:00:35,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 175 transitions, 1473 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-05-12 13:00:35,330 INFO L231 Difference]: Finished difference. Result has 119 places, 127 transitions, 1047 flow [2024-05-12 13:00:35,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1047, PETRI_PLACES=119, PETRI_TRANSITIONS=127} [2024-05-12 13:00:35,330 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 62 predicate places. [2024-05-12 13:00:35,330 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 127 transitions, 1047 flow [2024-05-12 13:00:35,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:35,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:35,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:35,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-05-12 13:00:35,331 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:35,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:35,331 INFO L85 PathProgramCache]: Analyzing trace with hash -2061669183, now seen corresponding path program 5 times [2024-05-12 13:00:35,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:35,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456178248] [2024-05-12 13:00:35,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:35,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:36,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:36,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:36,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456178248] [2024-05-12 13:00:36,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456178248] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:36,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:36,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:00:36,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356411386] [2024-05-12 13:00:36,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:36,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:00:36,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:36,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:00:36,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:00:36,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:00:36,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 127 transitions, 1047 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:36,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:36,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:00:36,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:37,820 INFO L124 PetriNetUnfolderBase]: 5646/8313 cut-off events. [2024-05-12 13:00:37,820 INFO L125 PetriNetUnfolderBase]: For 111178/111188 co-relation queries the response was YES. [2024-05-12 13:00:37,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37029 conditions, 8313 events. 5646/8313 cut-off events. For 111178/111188 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 47795 event pairs, 1418 based on Foata normal form. 9/8275 useless extension candidates. Maximal degree in co-relation 36981. Up to 7505 conditions per place. [2024-05-12 13:00:37,885 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 118 selfloop transitions, 51 changer transitions 0/179 dead transitions. [2024-05-12 13:00:37,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 179 transitions, 1642 flow [2024-05-12 13:00:37,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:00:37,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:00:37,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-05-12 13:00:37,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5196078431372549 [2024-05-12 13:00:37,886 INFO L175 Difference]: Start difference. First operand has 119 places, 127 transitions, 1047 flow. Second operand 8 states and 212 transitions. [2024-05-12 13:00:37,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 179 transitions, 1642 flow [2024-05-12 13:00:38,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 179 transitions, 1530 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-05-12 13:00:38,005 INFO L231 Difference]: Finished difference. Result has 122 places, 130 transitions, 1090 flow [2024-05-12 13:00:38,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=944, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1090, PETRI_PLACES=122, PETRI_TRANSITIONS=130} [2024-05-12 13:00:38,006 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 65 predicate places. [2024-05-12 13:00:38,006 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 130 transitions, 1090 flow [2024-05-12 13:00:38,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:38,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:38,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:38,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-05-12 13:00:38,007 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:38,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:38,007 INFO L85 PathProgramCache]: Analyzing trace with hash -2061676623, now seen corresponding path program 6 times [2024-05-12 13:00:38,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:38,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200069376] [2024-05-12 13:00:38,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:38,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:39,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:39,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:39,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200069376] [2024-05-12 13:00:39,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200069376] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:39,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:39,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:00:39,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435158085] [2024-05-12 13:00:39,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:39,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:00:39,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:39,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:00:39,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:00:39,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:00:39,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 130 transitions, 1090 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:39,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:39,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:00:39,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:40,538 INFO L124 PetriNetUnfolderBase]: 5636/8299 cut-off events. [2024-05-12 13:00:40,538 INFO L125 PetriNetUnfolderBase]: For 116773/116783 co-relation queries the response was YES. [2024-05-12 13:00:40,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37018 conditions, 8299 events. 5636/8299 cut-off events. For 116773/116783 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 47681 event pairs, 1416 based on Foata normal form. 9/8261 useless extension candidates. Maximal degree in co-relation 36969. Up to 7497 conditions per place. [2024-05-12 13:00:40,605 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 115 selfloop transitions, 52 changer transitions 0/177 dead transitions. [2024-05-12 13:00:40,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 177 transitions, 1542 flow [2024-05-12 13:00:40,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:00:40,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:00:40,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-05-12 13:00:40,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5122549019607843 [2024-05-12 13:00:40,606 INFO L175 Difference]: Start difference. First operand has 122 places, 130 transitions, 1090 flow. Second operand 8 states and 209 transitions. [2024-05-12 13:00:40,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 177 transitions, 1542 flow [2024-05-12 13:00:40,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 177 transitions, 1362 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-05-12 13:00:40,726 INFO L231 Difference]: Finished difference. Result has 123 places, 130 transitions, 1022 flow [2024-05-12 13:00:40,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1022, PETRI_PLACES=123, PETRI_TRANSITIONS=130} [2024-05-12 13:00:40,727 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 66 predicate places. [2024-05-12 13:00:40,727 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 130 transitions, 1022 flow [2024-05-12 13:00:40,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:40,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:40,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:40,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-05-12 13:00:40,728 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:40,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:40,728 INFO L85 PathProgramCache]: Analyzing trace with hash 680224994, now seen corresponding path program 4 times [2024-05-12 13:00:40,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:40,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511476014] [2024-05-12 13:00:40,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:40,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:41,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:41,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:41,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511476014] [2024-05-12 13:00:41,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511476014] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:41,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:41,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:00:41,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429081961] [2024-05-12 13:00:41,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:41,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:00:41,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:41,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:00:41,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:00:41,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:00:41,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 130 transitions, 1022 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:41,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:41,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:00:41,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:43,230 INFO L124 PetriNetUnfolderBase]: 5631/8330 cut-off events. [2024-05-12 13:00:43,231 INFO L125 PetriNetUnfolderBase]: For 121063/121071 co-relation queries the response was YES. [2024-05-12 13:00:43,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37059 conditions, 8330 events. 5631/8330 cut-off events. For 121063/121071 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 48197 event pairs, 1587 based on Foata normal form. 5/8278 useless extension candidates. Maximal degree in co-relation 37009. Up to 7775 conditions per place. [2024-05-12 13:00:43,296 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 123 selfloop transitions, 40 changer transitions 0/173 dead transitions. [2024-05-12 13:00:43,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 173 transitions, 1458 flow [2024-05-12 13:00:43,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:00:43,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:00:43,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-05-12 13:00:43,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 13:00:43,298 INFO L175 Difference]: Start difference. First operand has 123 places, 130 transitions, 1022 flow. Second operand 8 states and 204 transitions. [2024-05-12 13:00:43,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 173 transitions, 1458 flow [2024-05-12 13:00:43,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 173 transitions, 1308 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-05-12 13:00:43,396 INFO L231 Difference]: Finished difference. Result has 123 places, 130 transitions, 960 flow [2024-05-12 13:00:43,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=960, PETRI_PLACES=123, PETRI_TRANSITIONS=130} [2024-05-12 13:00:43,397 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 66 predicate places. [2024-05-12 13:00:43,397 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 130 transitions, 960 flow [2024-05-12 13:00:43,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:43,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:43,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:43,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-05-12 13:00:43,397 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:43,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:43,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1086222990, now seen corresponding path program 1 times [2024-05-12 13:00:43,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:43,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553506631] [2024-05-12 13:00:43,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:43,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:43,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:44,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:44,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:44,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553506631] [2024-05-12 13:00:44,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553506631] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:44,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:44,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:00:44,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270325635] [2024-05-12 13:00:44,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:44,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:00:44,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:44,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:00:44,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:00:44,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2024-05-12 13:00:44,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 130 transitions, 960 flow. Second operand has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:44,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:44,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2024-05-12 13:00:44,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:46,137 INFO L124 PetriNetUnfolderBase]: 4606/7519 cut-off events. [2024-05-12 13:00:46,138 INFO L125 PetriNetUnfolderBase]: For 109911/109913 co-relation queries the response was YES. [2024-05-12 13:00:46,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31614 conditions, 7519 events. 4606/7519 cut-off events. For 109911/109913 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 49461 event pairs, 1687 based on Foata normal form. 6/7400 useless extension candidates. Maximal degree in co-relation 31563. Up to 6460 conditions per place. [2024-05-12 13:00:46,198 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 135 selfloop transitions, 20 changer transitions 0/177 dead transitions. [2024-05-12 13:00:46,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 177 transitions, 1424 flow [2024-05-12 13:00:46,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:00:46,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:00:46,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-05-12 13:00:46,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5196078431372549 [2024-05-12 13:00:46,201 INFO L175 Difference]: Start difference. First operand has 123 places, 130 transitions, 960 flow. Second operand 8 states and 212 transitions. [2024-05-12 13:00:46,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 177 transitions, 1424 flow [2024-05-12 13:00:46,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 177 transitions, 1288 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-05-12 13:00:46,278 INFO L231 Difference]: Finished difference. Result has 122 places, 135 transitions, 931 flow [2024-05-12 13:00:46,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=931, PETRI_PLACES=122, PETRI_TRANSITIONS=135} [2024-05-12 13:00:46,284 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 65 predicate places. [2024-05-12 13:00:46,284 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 135 transitions, 931 flow [2024-05-12 13:00:46,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:46,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:46,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:46,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-05-12 13:00:46,285 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:46,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:46,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1805255963, now seen corresponding path program 1 times [2024-05-12 13:00:46,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:46,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146926636] [2024-05-12 13:00:46,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:46,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:48,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:48,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:48,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146926636] [2024-05-12 13:00:48,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146926636] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:48,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:48,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:00:48,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570765314] [2024-05-12 13:00:48,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:48,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:00:48,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:48,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:00:48,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:00:48,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-05-12 13:00:48,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 135 transitions, 931 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-05-12 13:00:48,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:48,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-05-12 13:00:48,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:49,087 INFO L124 PetriNetUnfolderBase]: 4078/6975 cut-off events. [2024-05-12 13:00:49,087 INFO L125 PetriNetUnfolderBase]: For 113440/113496 co-relation queries the response was YES. [2024-05-12 13:00:49,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29901 conditions, 6975 events. 4078/6975 cut-off events. For 113440/113496 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 48274 event pairs, 1626 based on Foata normal form. 15/6857 useless extension candidates. Maximal degree in co-relation 29849. Up to 5751 conditions per place. [2024-05-12 13:00:49,144 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 104 selfloop transitions, 13 changer transitions 0/156 dead transitions. [2024-05-12 13:00:49,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 156 transitions, 1237 flow [2024-05-12 13:00:49,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:00:49,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:00:49,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2024-05-12 13:00:49,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2024-05-12 13:00:49,146 INFO L175 Difference]: Start difference. First operand has 122 places, 135 transitions, 931 flow. Second operand 6 states and 162 transitions. [2024-05-12 13:00:49,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 156 transitions, 1237 flow [2024-05-12 13:00:49,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 156 transitions, 1170 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-05-12 13:00:49,223 INFO L231 Difference]: Finished difference. Result has 123 places, 138 transitions, 930 flow [2024-05-12 13:00:49,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=930, PETRI_PLACES=123, PETRI_TRANSITIONS=138} [2024-05-12 13:00:49,224 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 66 predicate places. [2024-05-12 13:00:49,224 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 138 transitions, 930 flow [2024-05-12 13:00:49,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-05-12 13:00:49,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:49,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:49,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-05-12 13:00:49,225 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:49,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:49,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1538001168, now seen corresponding path program 1 times [2024-05-12 13:00:49,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:49,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124755586] [2024-05-12 13:00:49,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:49,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:50,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:50,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:50,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124755586] [2024-05-12 13:00:50,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124755586] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:50,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:50,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:00:50,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518542474] [2024-05-12 13:00:50,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:50,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:00:50,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:50,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:00:50,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:00:50,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:00:50,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 138 transitions, 930 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:50,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:50,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:00:50,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:52,202 INFO L124 PetriNetUnfolderBase]: 5650/9128 cut-off events. [2024-05-12 13:00:52,203 INFO L125 PetriNetUnfolderBase]: For 143435/143435 co-relation queries the response was YES. [2024-05-12 13:00:52,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39540 conditions, 9128 events. 5650/9128 cut-off events. For 143435/143435 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 59091 event pairs, 1733 based on Foata normal form. 2/8823 useless extension candidates. Maximal degree in co-relation 39487. Up to 7931 conditions per place. [2024-05-12 13:00:52,260 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 168 selfloop transitions, 24 changer transitions 0/202 dead transitions. [2024-05-12 13:00:52,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 202 transitions, 1518 flow [2024-05-12 13:00:52,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:00:52,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:00:52,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-05-12 13:00:52,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-05-12 13:00:52,261 INFO L175 Difference]: Start difference. First operand has 123 places, 138 transitions, 930 flow. Second operand 9 states and 234 transitions. [2024-05-12 13:00:52,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 202 transitions, 1518 flow [2024-05-12 13:00:52,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 202 transitions, 1474 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-05-12 13:00:52,337 INFO L231 Difference]: Finished difference. Result has 128 places, 141 transitions, 990 flow [2024-05-12 13:00:52,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=990, PETRI_PLACES=128, PETRI_TRANSITIONS=141} [2024-05-12 13:00:52,337 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 71 predicate places. [2024-05-12 13:00:52,337 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 141 transitions, 990 flow [2024-05-12 13:00:52,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:52,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:52,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:52,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-05-12 13:00:52,338 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:52,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:52,338 INFO L85 PathProgramCache]: Analyzing trace with hash 882606464, now seen corresponding path program 1 times [2024-05-12 13:00:52,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:52,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174351066] [2024-05-12 13:00:52,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:52,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:53,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:53,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:53,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174351066] [2024-05-12 13:00:53,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174351066] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:53,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:53,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:00:53,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507943226] [2024-05-12 13:00:53,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:53,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:00:53,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:53,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:00:53,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:00:53,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:00:53,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 141 transitions, 990 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:53,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:53,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:00:53,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:55,254 INFO L124 PetriNetUnfolderBase]: 5696/9076 cut-off events. [2024-05-12 13:00:55,255 INFO L125 PetriNetUnfolderBase]: For 156024/156026 co-relation queries the response was YES. [2024-05-12 13:00:55,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40858 conditions, 9076 events. 5696/9076 cut-off events. For 156024/156026 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 57668 event pairs, 1467 based on Foata normal form. 4/8802 useless extension candidates. Maximal degree in co-relation 40804. Up to 7289 conditions per place. [2024-05-12 13:00:55,323 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 129 selfloop transitions, 73 changer transitions 0/212 dead transitions. [2024-05-12 13:00:55,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 212 transitions, 1766 flow [2024-05-12 13:00:55,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:00:55,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:00:55,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 246 transitions. [2024-05-12 13:00:55,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5359477124183006 [2024-05-12 13:00:55,324 INFO L175 Difference]: Start difference. First operand has 128 places, 141 transitions, 990 flow. Second operand 9 states and 246 transitions. [2024-05-12 13:00:55,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 212 transitions, 1766 flow [2024-05-12 13:00:55,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 212 transitions, 1686 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-05-12 13:00:55,433 INFO L231 Difference]: Finished difference. Result has 130 places, 147 transitions, 1154 flow [2024-05-12 13:00:55,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1154, PETRI_PLACES=130, PETRI_TRANSITIONS=147} [2024-05-12 13:00:55,434 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 73 predicate places. [2024-05-12 13:00:55,434 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 147 transitions, 1154 flow [2024-05-12 13:00:55,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:55,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:55,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:55,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-05-12 13:00:55,434 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:55,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:55,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1537881198, now seen corresponding path program 2 times [2024-05-12 13:00:55,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:55,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609692213] [2024-05-12 13:00:55,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:55,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:55,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:56,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:56,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:56,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609692213] [2024-05-12 13:00:56,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609692213] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:56,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:56,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:00:56,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595397750] [2024-05-12 13:00:56,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:56,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:00:56,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:56,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:00:56,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:00:56,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:00:56,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 147 transitions, 1154 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:56,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:56,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:00:56,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:58,347 INFO L124 PetriNetUnfolderBase]: 5719/8752 cut-off events. [2024-05-12 13:00:58,348 INFO L125 PetriNetUnfolderBase]: For 168153/168155 co-relation queries the response was YES. [2024-05-12 13:00:58,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42248 conditions, 8752 events. 5719/8752 cut-off events. For 168153/168155 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 53241 event pairs, 1605 based on Foata normal form. 4/8604 useless extension candidates. Maximal degree in co-relation 42193. Up to 7803 conditions per place. [2024-05-12 13:00:58,417 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 152 selfloop transitions, 52 changer transitions 0/214 dead transitions. [2024-05-12 13:00:58,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 214 transitions, 1938 flow [2024-05-12 13:00:58,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:00:58,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:00:58,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-05-12 13:00:58,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5206971677559913 [2024-05-12 13:00:58,418 INFO L175 Difference]: Start difference. First operand has 130 places, 147 transitions, 1154 flow. Second operand 9 states and 239 transitions. [2024-05-12 13:00:58,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 214 transitions, 1938 flow [2024-05-12 13:00:58,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 214 transitions, 1818 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-05-12 13:00:58,542 INFO L231 Difference]: Finished difference. Result has 134 places, 153 transitions, 1252 flow [2024-05-12 13:00:58,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1252, PETRI_PLACES=134, PETRI_TRANSITIONS=153} [2024-05-12 13:00:58,542 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 77 predicate places. [2024-05-12 13:00:58,543 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 153 transitions, 1252 flow [2024-05-12 13:00:58,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:58,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:58,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:58,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-05-12 13:00:58,543 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:58,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:58,544 INFO L85 PathProgramCache]: Analyzing trace with hash 887247908, now seen corresponding path program 3 times [2024-05-12 13:00:58,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:58,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948261100] [2024-05-12 13:00:58,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:58,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:59,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:59,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:59,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948261100] [2024-05-12 13:00:59,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948261100] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:59,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:59,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:00:59,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327030010] [2024-05-12 13:00:59,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:59,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:00:59,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:59,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:00:59,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:00:59,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:00:59,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 153 transitions, 1252 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:59,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:59,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:00:59,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:01,566 INFO L124 PetriNetUnfolderBase]: 5742/8794 cut-off events. [2024-05-12 13:01:01,566 INFO L125 PetriNetUnfolderBase]: For 180290/180292 co-relation queries the response was YES. [2024-05-12 13:01:01,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43538 conditions, 8794 events. 5742/8794 cut-off events. For 180290/180292 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 53639 event pairs, 1600 based on Foata normal form. 4/8642 useless extension candidates. Maximal degree in co-relation 43481. Up to 7827 conditions per place. [2024-05-12 13:01:01,645 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 151 selfloop transitions, 53 changer transitions 0/214 dead transitions. [2024-05-12 13:01:01,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 214 transitions, 1986 flow [2024-05-12 13:01:01,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:01:01,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:01:01,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-05-12 13:01:01,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163398692810458 [2024-05-12 13:01:01,646 INFO L175 Difference]: Start difference. First operand has 134 places, 153 transitions, 1252 flow. Second operand 9 states and 237 transitions. [2024-05-12 13:01:01,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 214 transitions, 1986 flow [2024-05-12 13:01:01,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 214 transitions, 1873 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-05-12 13:01:01,773 INFO L231 Difference]: Finished difference. Result has 138 places, 156 transitions, 1309 flow [2024-05-12 13:01:01,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1309, PETRI_PLACES=138, PETRI_TRANSITIONS=156} [2024-05-12 13:01:01,774 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 81 predicate places. [2024-05-12 13:01:01,774 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 156 transitions, 1309 flow [2024-05-12 13:01:01,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:01,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:01,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:01,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-05-12 13:01:01,774 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:01,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:01,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1533239382, now seen corresponding path program 2 times [2024-05-12 13:01:01,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:01,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464761686] [2024-05-12 13:01:01,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:01,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:02,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:02,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:02,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464761686] [2024-05-12 13:01:02,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464761686] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:02,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:02,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:01:02,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171029591] [2024-05-12 13:01:02,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:02,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:01:02,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:02,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:01:02,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:01:03,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:01:03,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 156 transitions, 1309 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:03,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:03,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:01:03,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:04,697 INFO L124 PetriNetUnfolderBase]: 5844/8948 cut-off events. [2024-05-12 13:01:04,697 INFO L125 PetriNetUnfolderBase]: For 192570/192572 co-relation queries the response was YES. [2024-05-12 13:01:04,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44792 conditions, 8948 events. 5844/8948 cut-off events. For 192570/192572 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 54738 event pairs, 1478 based on Foata normal form. 4/8790 useless extension candidates. Maximal degree in co-relation 44733. Up to 7439 conditions per place. [2024-05-12 13:01:04,777 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 145 selfloop transitions, 72 changer transitions 0/227 dead transitions. [2024-05-12 13:01:04,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 227 transitions, 2237 flow [2024-05-12 13:01:04,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:01:04,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:01:04,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 248 transitions. [2024-05-12 13:01:04,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403050108932462 [2024-05-12 13:01:04,779 INFO L175 Difference]: Start difference. First operand has 138 places, 156 transitions, 1309 flow. Second operand 9 states and 248 transitions. [2024-05-12 13:01:04,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 227 transitions, 2237 flow [2024-05-12 13:01:04,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 227 transitions, 2124 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-05-12 13:01:04,956 INFO L231 Difference]: Finished difference. Result has 141 places, 162 transitions, 1420 flow [2024-05-12 13:01:04,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1196, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1420, PETRI_PLACES=141, PETRI_TRANSITIONS=162} [2024-05-12 13:01:04,957 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 84 predicate places. [2024-05-12 13:01:04,957 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 162 transitions, 1420 flow [2024-05-12 13:01:04,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:04,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:04,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:04,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-05-12 13:01:04,958 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:04,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:04,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1533232872, now seen corresponding path program 3 times [2024-05-12 13:01:04,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:04,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74712770] [2024-05-12 13:01:04,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:04,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:06,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:06,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:06,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74712770] [2024-05-12 13:01:06,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74712770] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:06,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:06,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:01:06,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771399190] [2024-05-12 13:01:06,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:06,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:01:06,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:06,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:01:06,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:01:06,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:01:06,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 162 transitions, 1420 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:06,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:06,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:01:06,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:07,915 INFO L124 PetriNetUnfolderBase]: 5834/8934 cut-off events. [2024-05-12 13:01:07,915 INFO L125 PetriNetUnfolderBase]: For 200490/200492 co-relation queries the response was YES. [2024-05-12 13:01:07,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45161 conditions, 8934 events. 5834/8934 cut-off events. For 200490/200492 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 54641 event pairs, 1478 based on Foata normal form. 4/8776 useless extension candidates. Maximal degree in co-relation 45101. Up to 7431 conditions per place. [2024-05-12 13:01:07,995 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 141 selfloop transitions, 73 changer transitions 0/224 dead transitions. [2024-05-12 13:01:07,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 224 transitions, 2142 flow [2024-05-12 13:01:07,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:01:07,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:01:07,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 244 transitions. [2024-05-12 13:01:07,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5315904139433552 [2024-05-12 13:01:07,997 INFO L175 Difference]: Start difference. First operand has 141 places, 162 transitions, 1420 flow. Second operand 9 states and 244 transitions. [2024-05-12 13:01:07,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 224 transitions, 2142 flow [2024-05-12 13:01:08,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 224 transitions, 1996 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-05-12 13:01:08,213 INFO L231 Difference]: Finished difference. Result has 145 places, 162 transitions, 1428 flow [2024-05-12 13:01:08,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1274, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1428, PETRI_PLACES=145, PETRI_TRANSITIONS=162} [2024-05-12 13:01:08,214 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 88 predicate places. [2024-05-12 13:01:08,214 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 162 transitions, 1428 flow [2024-05-12 13:01:08,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:08,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:08,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:08,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-05-12 13:01:08,214 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:08,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:08,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1150953510, now seen corresponding path program 4 times [2024-05-12 13:01:08,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:08,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333176793] [2024-05-12 13:01:08,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:08,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:08,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:09,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:09,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:09,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333176793] [2024-05-12 13:01:09,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333176793] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:09,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:09,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:01:09,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583687350] [2024-05-12 13:01:09,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:09,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:01:09,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:09,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:01:09,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:01:09,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:01:09,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 162 transitions, 1428 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:09,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:09,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:01:09,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:11,207 INFO L124 PetriNetUnfolderBase]: 5992/9161 cut-off events. [2024-05-12 13:01:11,208 INFO L125 PetriNetUnfolderBase]: For 217511/217513 co-relation queries the response was YES. [2024-05-12 13:01:11,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46880 conditions, 9161 events. 5992/9161 cut-off events. For 217511/217513 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 55962 event pairs, 1518 based on Foata normal form. 4/9012 useless extension candidates. Maximal degree in co-relation 46819. Up to 7564 conditions per place. [2024-05-12 13:01:11,272 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 147 selfloop transitions, 78 changer transitions 0/235 dead transitions. [2024-05-12 13:01:11,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 235 transitions, 2577 flow [2024-05-12 13:01:11,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:01:11,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:01:11,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 249 transitions. [2024-05-12 13:01:11,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5424836601307189 [2024-05-12 13:01:11,274 INFO L175 Difference]: Start difference. First operand has 145 places, 162 transitions, 1428 flow. Second operand 9 states and 249 transitions. [2024-05-12 13:01:11,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 235 transitions, 2577 flow [2024-05-12 13:01:11,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 235 transitions, 2405 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-05-12 13:01:11,450 INFO L231 Difference]: Finished difference. Result has 146 places, 171 transitions, 1555 flow [2024-05-12 13:01:11,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1274, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1555, PETRI_PLACES=146, PETRI_TRANSITIONS=171} [2024-05-12 13:01:11,451 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 89 predicate places. [2024-05-12 13:01:11,451 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 171 transitions, 1555 flow [2024-05-12 13:01:11,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:11,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:11,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:11,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-05-12 13:01:11,452 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:11,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:11,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1059737984, now seen corresponding path program 5 times [2024-05-12 13:01:11,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:11,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397921481] [2024-05-12 13:01:11,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:11,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:12,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:12,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:12,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397921481] [2024-05-12 13:01:12,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397921481] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:12,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:12,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:01:12,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512156364] [2024-05-12 13:01:12,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:12,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:01:12,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:12,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:01:12,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:01:12,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:01:12,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 171 transitions, 1555 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:12,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:12,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:01:12,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:14,307 INFO L124 PetriNetUnfolderBase]: 5982/9133 cut-off events. [2024-05-12 13:01:14,308 INFO L125 PetriNetUnfolderBase]: For 225137/225139 co-relation queries the response was YES. [2024-05-12 13:01:14,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46905 conditions, 9133 events. 5982/9133 cut-off events. For 225137/225139 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 55619 event pairs, 1494 based on Foata normal form. 4/8984 useless extension candidates. Maximal degree in co-relation 46843. Up to 7556 conditions per place. [2024-05-12 13:01:14,382 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 144 selfloop transitions, 79 changer transitions 0/233 dead transitions. [2024-05-12 13:01:14,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 233 transitions, 2437 flow [2024-05-12 13:01:14,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:01:14,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:01:14,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 246 transitions. [2024-05-12 13:01:14,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5359477124183006 [2024-05-12 13:01:14,383 INFO L175 Difference]: Start difference. First operand has 146 places, 171 transitions, 1555 flow. Second operand 9 states and 246 transitions. [2024-05-12 13:01:14,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 233 transitions, 2437 flow [2024-05-12 13:01:14,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 233 transitions, 2287 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-05-12 13:01:14,566 INFO L231 Difference]: Finished difference. Result has 151 places, 171 transitions, 1571 flow [2024-05-12 13:01:14,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1405, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1571, PETRI_PLACES=151, PETRI_TRANSITIONS=171} [2024-05-12 13:01:14,566 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 94 predicate places. [2024-05-12 13:01:14,567 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 171 transitions, 1571 flow [2024-05-12 13:01:14,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:14,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:14,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:14,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-05-12 13:01:14,567 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:14,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:14,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1360749678, now seen corresponding path program 4 times [2024-05-12 13:01:14,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:14,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97019176] [2024-05-12 13:01:14,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:14,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:15,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:15,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:15,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97019176] [2024-05-12 13:01:15,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97019176] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:15,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:15,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:01:15,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034800192] [2024-05-12 13:01:15,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:15,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:01:15,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:15,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:01:15,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:01:15,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:01:15,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 171 transitions, 1571 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:15,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:15,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:01:15,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:17,586 INFO L124 PetriNetUnfolderBase]: 6005/9195 cut-off events. [2024-05-12 13:01:17,586 INFO L125 PetriNetUnfolderBase]: For 234464/234466 co-relation queries the response was YES. [2024-05-12 13:01:17,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47302 conditions, 9195 events. 6005/9195 cut-off events. For 234464/234466 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 56281 event pairs, 1639 based on Foata normal form. 4/9038 useless extension candidates. Maximal degree in co-relation 47239. Up to 8185 conditions per place. [2024-05-12 13:01:17,665 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 164 selfloop transitions, 55 changer transitions 0/229 dead transitions. [2024-05-12 13:01:17,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 229 transitions, 2336 flow [2024-05-12 13:01:17,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:01:17,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:01:17,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-05-12 13:01:17,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119825708061002 [2024-05-12 13:01:17,667 INFO L175 Difference]: Start difference. First operand has 151 places, 171 transitions, 1571 flow. Second operand 9 states and 235 transitions. [2024-05-12 13:01:17,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 229 transitions, 2336 flow [2024-05-12 13:01:17,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 229 transitions, 2216 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-05-12 13:01:17,802 INFO L231 Difference]: Finished difference. Result has 154 places, 174 transitions, 1616 flow [2024-05-12 13:01:17,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1451, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1616, PETRI_PLACES=154, PETRI_TRANSITIONS=174} [2024-05-12 13:01:17,803 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 97 predicate places. [2024-05-12 13:01:17,803 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 174 transitions, 1616 flow [2024-05-12 13:01:17,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:17,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:17,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:17,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-05-12 13:01:17,803 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:17,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:17,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1360512342, now seen corresponding path program 6 times [2024-05-12 13:01:17,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:17,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445749777] [2024-05-12 13:01:17,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:17,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:18,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:18,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:18,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445749777] [2024-05-12 13:01:18,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445749777] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:18,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:18,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:01:18,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578519517] [2024-05-12 13:01:18,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:18,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:01:18,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:18,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:01:18,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:01:18,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:01:18,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 174 transitions, 1616 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:18,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:18,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:01:18,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:20,686 INFO L124 PetriNetUnfolderBase]: 5995/9162 cut-off events. [2024-05-12 13:01:20,686 INFO L125 PetriNetUnfolderBase]: For 243865/243867 co-relation queries the response was YES. [2024-05-12 13:01:20,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47097 conditions, 9162 events. 5995/9162 cut-off events. For 243865/243867 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 56018 event pairs, 1503 based on Foata normal form. 4/9012 useless extension candidates. Maximal degree in co-relation 47033. Up to 7580 conditions per place. [2024-05-12 13:01:20,767 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 142 selfloop transitions, 81 changer transitions 0/233 dead transitions. [2024-05-12 13:01:20,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 233 transitions, 2362 flow [2024-05-12 13:01:20,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:01:20,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:01:20,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 242 transitions. [2024-05-12 13:01:20,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272331154684096 [2024-05-12 13:01:20,768 INFO L175 Difference]: Start difference. First operand has 154 places, 174 transitions, 1616 flow. Second operand 9 states and 242 transitions. [2024-05-12 13:01:20,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 233 transitions, 2362 flow [2024-05-12 13:01:21,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 233 transitions, 2226 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-05-12 13:01:21,014 INFO L231 Difference]: Finished difference. Result has 157 places, 174 transitions, 1650 flow [2024-05-12 13:01:21,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1480, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1650, PETRI_PLACES=157, PETRI_TRANSITIONS=174} [2024-05-12 13:01:21,014 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 100 predicate places. [2024-05-12 13:01:21,014 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 174 transitions, 1650 flow [2024-05-12 13:01:21,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:21,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:21,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:21,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-05-12 13:01:21,015 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:21,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:21,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1030286326, now seen corresponding path program 1 times [2024-05-12 13:01:21,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:21,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806912932] [2024-05-12 13:01:21,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:21,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:21,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:22,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:22,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:22,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806912932] [2024-05-12 13:01:22,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806912932] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:22,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:22,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:01:22,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565147961] [2024-05-12 13:01:22,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:22,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:01:22,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:22,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:01:22,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:01:22,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 51 [2024-05-12 13:01:22,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 174 transitions, 1650 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:22,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:22,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 51 [2024-05-12 13:01:22,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:23,330 INFO L124 PetriNetUnfolderBase]: 4939/8158 cut-off events. [2024-05-12 13:01:23,330 INFO L125 PetriNetUnfolderBase]: For 248863/248957 co-relation queries the response was YES. [2024-05-12 13:01:23,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41753 conditions, 8158 events. 4939/8158 cut-off events. For 248863/248957 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 55470 event pairs, 1848 based on Foata normal form. 21/7989 useless extension candidates. Maximal degree in co-relation 41688. Up to 6920 conditions per place. [2024-05-12 13:01:23,408 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 139 selfloop transitions, 14 changer transitions 0/203 dead transitions. [2024-05-12 13:01:23,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 203 transitions, 2081 flow [2024-05-12 13:01:23,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:01:23,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:01:23,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2024-05-12 13:01:23,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2024-05-12 13:01:23,409 INFO L175 Difference]: Start difference. First operand has 157 places, 174 transitions, 1650 flow. Second operand 6 states and 162 transitions. [2024-05-12 13:01:23,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 203 transitions, 2081 flow [2024-05-12 13:01:23,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 203 transitions, 1891 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-05-12 13:01:23,561 INFO L231 Difference]: Finished difference. Result has 155 places, 181 transitions, 1583 flow [2024-05-12 13:01:23,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1464, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1583, PETRI_PLACES=155, PETRI_TRANSITIONS=181} [2024-05-12 13:01:23,562 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 98 predicate places. [2024-05-12 13:01:23,562 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 181 transitions, 1583 flow [2024-05-12 13:01:23,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:23,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:23,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:23,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-05-12 13:01:23,563 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:23,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:23,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1288149138, now seen corresponding path program 7 times [2024-05-12 13:01:23,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:23,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826493301] [2024-05-12 13:01:23,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:23,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:24,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:24,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:24,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826493301] [2024-05-12 13:01:24,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826493301] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:24,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:24,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:01:24,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754815603] [2024-05-12 13:01:24,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:24,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:01:24,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:24,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:01:24,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:01:24,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:01:24,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 181 transitions, 1583 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:24,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:24,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:01:24,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:26,454 INFO L124 PetriNetUnfolderBase]: 6058/9380 cut-off events. [2024-05-12 13:01:26,455 INFO L125 PetriNetUnfolderBase]: For 268312/268314 co-relation queries the response was YES. [2024-05-12 13:01:26,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48877 conditions, 9380 events. 6058/9380 cut-off events. For 268312/268314 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 58625 event pairs, 1708 based on Foata normal form. 6/9201 useless extension candidates. Maximal degree in co-relation 48810. Up to 7642 conditions per place. [2024-05-12 13:01:26,538 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 143 selfloop transitions, 88 changer transitions 0/241 dead transitions. [2024-05-12 13:01:26,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 241 transitions, 2402 flow [2024-05-12 13:01:26,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:01:26,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:01:26,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-05-12 13:01:26,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163398692810458 [2024-05-12 13:01:26,540 INFO L175 Difference]: Start difference. First operand has 155 places, 181 transitions, 1583 flow. Second operand 9 states and 237 transitions. [2024-05-12 13:01:26,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 241 transitions, 2402 flow [2024-05-12 13:01:26,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 241 transitions, 2360 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-05-12 13:01:26,748 INFO L231 Difference]: Finished difference. Result has 161 places, 184 transitions, 1770 flow [2024-05-12 13:01:26,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1541, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1770, PETRI_PLACES=161, PETRI_TRANSITIONS=184} [2024-05-12 13:01:26,749 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 104 predicate places. [2024-05-12 13:01:26,749 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 184 transitions, 1770 flow [2024-05-12 13:01:26,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:26,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:26,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:26,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-05-12 13:01:26,750 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:26,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:26,750 INFO L85 PathProgramCache]: Analyzing trace with hash 391229406, now seen corresponding path program 8 times [2024-05-12 13:01:26,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:26,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477060160] [2024-05-12 13:01:26,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:26,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:27,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:27,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:27,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477060160] [2024-05-12 13:01:27,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477060160] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:27,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:27,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:01:27,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485986180] [2024-05-12 13:01:27,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:27,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:01:27,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:27,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:01:27,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:01:27,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:01:27,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 184 transitions, 1770 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:27,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:27,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:01:27,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:29,675 INFO L124 PetriNetUnfolderBase]: 6104/9425 cut-off events. [2024-05-12 13:01:29,675 INFO L125 PetriNetUnfolderBase]: For 283246/283257 co-relation queries the response was YES. [2024-05-12 13:01:29,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50290 conditions, 9425 events. 6104/9425 cut-off events. For 283246/283257 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 58570 event pairs, 1716 based on Foata normal form. 8/9258 useless extension candidates. Maximal degree in co-relation 50222. Up to 7681 conditions per place. [2024-05-12 13:01:29,762 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 150 selfloop transitions, 85 changer transitions 0/245 dead transitions. [2024-05-12 13:01:29,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 245 transitions, 2611 flow [2024-05-12 13:01:29,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:01:29,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:01:29,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2024-05-12 13:01:29,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5250544662309368 [2024-05-12 13:01:29,765 INFO L175 Difference]: Start difference. First operand has 161 places, 184 transitions, 1770 flow. Second operand 9 states and 241 transitions. [2024-05-12 13:01:29,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 245 transitions, 2611 flow [2024-05-12 13:01:30,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 245 transitions, 2454 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-05-12 13:01:30,025 INFO L231 Difference]: Finished difference. Result has 164 places, 187 transitions, 1842 flow [2024-05-12 13:01:30,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1620, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1842, PETRI_PLACES=164, PETRI_TRANSITIONS=187} [2024-05-12 13:01:30,026 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 107 predicate places. [2024-05-12 13:01:30,026 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 187 transitions, 1842 flow [2024-05-12 13:01:30,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:30,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:30,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:30,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-05-12 13:01:30,027 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:30,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:30,027 INFO L85 PathProgramCache]: Analyzing trace with hash 390998766, now seen corresponding path program 9 times [2024-05-12 13:01:30,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:30,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172591047] [2024-05-12 13:01:30,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:30,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:31,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:31,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:31,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172591047] [2024-05-12 13:01:31,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172591047] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:31,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:31,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:01:31,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307008516] [2024-05-12 13:01:31,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:31,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:01:31,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:31,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:01:31,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:01:31,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:01:31,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 187 transitions, 1842 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:31,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:31,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:01:31,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:33,002 INFO L124 PetriNetUnfolderBase]: 6150/9507 cut-off events. [2024-05-12 13:01:33,002 INFO L125 PetriNetUnfolderBase]: For 297226/297237 co-relation queries the response was YES. [2024-05-12 13:01:33,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50824 conditions, 9507 events. 6150/9507 cut-off events. For 297226/297237 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 59200 event pairs, 1707 based on Foata normal form. 8/9340 useless extension candidates. Maximal degree in co-relation 50755. Up to 7720 conditions per place. [2024-05-12 13:01:33,091 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 149 selfloop transitions, 89 changer transitions 0/248 dead transitions. [2024-05-12 13:01:33,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 248 transitions, 2692 flow [2024-05-12 13:01:33,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:01:33,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:01:33,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 240 transitions. [2024-05-12 13:01:33,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228758169934641 [2024-05-12 13:01:33,093 INFO L175 Difference]: Start difference. First operand has 164 places, 187 transitions, 1842 flow. Second operand 9 states and 240 transitions. [2024-05-12 13:01:33,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 248 transitions, 2692 flow [2024-05-12 13:01:33,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 248 transitions, 2376 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-05-12 13:01:33,434 INFO L231 Difference]: Finished difference. Result has 164 places, 190 transitions, 1762 flow [2024-05-12 13:01:33,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1762, PETRI_PLACES=164, PETRI_TRANSITIONS=190} [2024-05-12 13:01:33,434 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 107 predicate places. [2024-05-12 13:01:33,434 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 190 transitions, 1762 flow [2024-05-12 13:01:33,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:33,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:33,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:33,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-05-12 13:01:33,435 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:33,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:33,435 INFO L85 PathProgramCache]: Analyzing trace with hash 390992070, now seen corresponding path program 5 times [2024-05-12 13:01:33,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:33,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283457906] [2024-05-12 13:01:33,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:33,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:34,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:34,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:34,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283457906] [2024-05-12 13:01:34,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283457906] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:34,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:34,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:01:34,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581935574] [2024-05-12 13:01:34,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:34,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:01:34,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:34,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:01:34,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:01:34,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:01:34,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 190 transitions, 1762 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:34,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:34,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:01:34,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:36,477 INFO L124 PetriNetUnfolderBase]: 6145/9547 cut-off events. [2024-05-12 13:01:36,477 INFO L125 PetriNetUnfolderBase]: For 300652/300661 co-relation queries the response was YES. [2024-05-12 13:01:36,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50863 conditions, 9547 events. 6145/9547 cut-off events. For 300652/300661 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 59981 event pairs, 1850 based on Foata normal form. 4/9352 useless extension candidates. Maximal degree in co-relation 50793. Up to 8381 conditions per place. [2024-05-12 13:01:36,567 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 175 selfloop transitions, 56 changer transitions 0/241 dead transitions. [2024-05-12 13:01:36,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 241 transitions, 2366 flow [2024-05-12 13:01:36,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:01:36,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:01:36,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-05-12 13:01:36,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5010893246187363 [2024-05-12 13:01:36,568 INFO L175 Difference]: Start difference. First operand has 164 places, 190 transitions, 1762 flow. Second operand 9 states and 230 transitions. [2024-05-12 13:01:36,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 241 transitions, 2366 flow [2024-05-12 13:01:36,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 241 transitions, 2095 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-05-12 13:01:36,848 INFO L231 Difference]: Finished difference. Result has 165 places, 190 transitions, 1611 flow [2024-05-12 13:01:36,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1491, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1611, PETRI_PLACES=165, PETRI_TRANSITIONS=190} [2024-05-12 13:01:36,848 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 108 predicate places. [2024-05-12 13:01:36,848 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 190 transitions, 1611 flow [2024-05-12 13:01:36,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:36,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:36,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:36,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-05-12 13:01:36,850 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:36,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:36,850 INFO L85 PathProgramCache]: Analyzing trace with hash 390992256, now seen corresponding path program 10 times [2024-05-12 13:01:36,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:36,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40981499] [2024-05-12 13:01:36,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:36,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:37,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:37,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:37,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40981499] [2024-05-12 13:01:37,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40981499] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:37,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:37,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:01:37,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987343706] [2024-05-12 13:01:37,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:37,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:01:37,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:37,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:01:37,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:01:37,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:01:38,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 190 transitions, 1611 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:38,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:38,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:01:38,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:39,745 INFO L124 PetriNetUnfolderBase]: 6135/9477 cut-off events. [2024-05-12 13:01:39,745 INFO L125 PetriNetUnfolderBase]: For 307785/307796 co-relation queries the response was YES. [2024-05-12 13:01:39,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50143 conditions, 9477 events. 6135/9477 cut-off events. For 307785/307796 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 58920 event pairs, 1705 based on Foata normal form. 8/9310 useless extension candidates. Maximal degree in co-relation 50072. Up to 7705 conditions per place. [2024-05-12 13:01:39,834 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 145 selfloop transitions, 91 changer transitions 0/246 dead transitions. [2024-05-12 13:01:39,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 246 transitions, 2245 flow [2024-05-12 13:01:39,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:01:39,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:01:39,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-05-12 13:01:39,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163398692810458 [2024-05-12 13:01:39,836 INFO L175 Difference]: Start difference. First operand has 165 places, 190 transitions, 1611 flow. Second operand 9 states and 237 transitions. [2024-05-12 13:01:39,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 246 transitions, 2245 flow [2024-05-12 13:01:40,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 246 transitions, 2034 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-05-12 13:01:40,071 INFO L231 Difference]: Finished difference. Result has 164 places, 190 transitions, 1590 flow [2024-05-12 13:01:40,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1400, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1590, PETRI_PLACES=164, PETRI_TRANSITIONS=190} [2024-05-12 13:01:40,072 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 107 predicate places. [2024-05-12 13:01:40,072 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 190 transitions, 1590 flow [2024-05-12 13:01:40,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:40,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:40,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:40,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-05-12 13:01:40,073 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:40,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:40,073 INFO L85 PathProgramCache]: Analyzing trace with hash -128376494, now seen corresponding path program 2 times [2024-05-12 13:01:40,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:40,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953276486] [2024-05-12 13:01:40,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:40,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:41,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:41,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:41,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953276486] [2024-05-12 13:01:41,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953276486] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:41,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:41,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:01:41,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539136722] [2024-05-12 13:01:41,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:41,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:01:41,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:41,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:01:41,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:01:41,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 51 [2024-05-12 13:01:41,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 190 transitions, 1590 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:41,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:41,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 51 [2024-05-12 13:01:41,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:42,357 INFO L124 PetriNetUnfolderBase]: 5001/8273 cut-off events. [2024-05-12 13:01:42,357 INFO L125 PetriNetUnfolderBase]: For 309583/309686 co-relation queries the response was YES. [2024-05-12 13:01:42,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44353 conditions, 8273 events. 5001/8273 cut-off events. For 309583/309686 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 56448 event pairs, 1865 based on Foata normal form. 26/8099 useless extension candidates. Maximal degree in co-relation 44281. Up to 6968 conditions per place. [2024-05-12 13:01:42,444 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 141 selfloop transitions, 18 changer transitions 0/212 dead transitions. [2024-05-12 13:01:42,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 212 transitions, 1994 flow [2024-05-12 13:01:42,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:01:42,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:01:42,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-05-12 13:01:42,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5196078431372549 [2024-05-12 13:01:42,445 INFO L175 Difference]: Start difference. First operand has 164 places, 190 transitions, 1590 flow. Second operand 6 states and 159 transitions. [2024-05-12 13:01:42,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 212 transitions, 1994 flow [2024-05-12 13:01:42,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 212 transitions, 1762 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 13:01:42,655 INFO L231 Difference]: Finished difference. Result has 161 places, 193 transitions, 1440 flow [2024-05-12 13:01:42,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1358, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1440, PETRI_PLACES=161, PETRI_TRANSITIONS=193} [2024-05-12 13:01:42,655 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 104 predicate places. [2024-05-12 13:01:42,655 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 193 transitions, 1440 flow [2024-05-12 13:01:42,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:42,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:42,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:42,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-05-12 13:01:42,656 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:42,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:42,656 INFO L85 PathProgramCache]: Analyzing trace with hash -827938226, now seen corresponding path program 1 times [2024-05-12 13:01:42,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:42,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807784397] [2024-05-12 13:01:42,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:42,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:43,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:43,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:43,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807784397] [2024-05-12 13:01:43,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807784397] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:43,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:43,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:01:43,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139630851] [2024-05-12 13:01:43,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:43,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:01:43,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:43,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:01:43,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:01:43,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2024-05-12 13:01:43,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 193 transitions, 1440 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:43,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:43,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2024-05-12 13:01:43,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:44,944 INFO L124 PetriNetUnfolderBase]: 5039/8212 cut-off events. [2024-05-12 13:01:44,944 INFO L125 PetriNetUnfolderBase]: For 279063/279065 co-relation queries the response was YES. [2024-05-12 13:01:44,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43614 conditions, 8212 events. 5039/8212 cut-off events. For 279063/279065 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 54082 event pairs, 1665 based on Foata normal form. 3/8032 useless extension candidates. Maximal degree in co-relation 43541. Up to 7110 conditions per place. [2024-05-12 13:01:45,020 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 183 selfloop transitions, 14 changer transitions 0/219 dead transitions. [2024-05-12 13:01:45,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 219 transitions, 1952 flow [2024-05-12 13:01:45,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:01:45,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:01:45,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-05-12 13:01:45,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032679738562091 [2024-05-12 13:01:45,022 INFO L175 Difference]: Start difference. First operand has 161 places, 193 transitions, 1440 flow. Second operand 6 states and 154 transitions. [2024-05-12 13:01:45,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 219 transitions, 1952 flow [2024-05-12 13:01:45,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 219 transitions, 1892 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-05-12 13:01:45,249 INFO L231 Difference]: Finished difference. Result has 164 places, 200 transitions, 1503 flow [2024-05-12 13:01:45,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1503, PETRI_PLACES=164, PETRI_TRANSITIONS=200} [2024-05-12 13:01:45,249 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 107 predicate places. [2024-05-12 13:01:45,250 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 200 transitions, 1503 flow [2024-05-12 13:01:45,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:45,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:45,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:45,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-05-12 13:01:45,250 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:45,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:45,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1007562272, now seen corresponding path program 2 times [2024-05-12 13:01:45,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:45,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457348638] [2024-05-12 13:01:45,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:45,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:46,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:46,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:46,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457348638] [2024-05-12 13:01:46,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457348638] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:46,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:46,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:01:46,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080474308] [2024-05-12 13:01:46,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:46,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:01:46,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:46,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:01:46,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:01:46,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2024-05-12 13:01:46,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 200 transitions, 1503 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:46,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:46,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2024-05-12 13:01:46,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:47,584 INFO L124 PetriNetUnfolderBase]: 5045/8372 cut-off events. [2024-05-12 13:01:47,584 INFO L125 PetriNetUnfolderBase]: For 289980/289986 co-relation queries the response was YES. [2024-05-12 13:01:47,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44954 conditions, 8372 events. 5045/8372 cut-off events. For 289980/289986 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 56549 event pairs, 1661 based on Foata normal form. 7/8154 useless extension candidates. Maximal degree in co-relation 44879. Up to 7093 conditions per place. [2024-05-12 13:01:47,663 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 179 selfloop transitions, 20 changer transitions 0/221 dead transitions. [2024-05-12 13:01:47,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 221 transitions, 1995 flow [2024-05-12 13:01:47,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:01:47,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:01:47,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-05-12 13:01:47,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-05-12 13:01:47,665 INFO L175 Difference]: Start difference. First operand has 164 places, 200 transitions, 1503 flow. Second operand 7 states and 170 transitions. [2024-05-12 13:01:47,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 221 transitions, 1995 flow [2024-05-12 13:01:47,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 221 transitions, 1942 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-05-12 13:01:47,995 INFO L231 Difference]: Finished difference. Result has 168 places, 203 transitions, 1544 flow [2024-05-12 13:01:47,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1450, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1544, PETRI_PLACES=168, PETRI_TRANSITIONS=203} [2024-05-12 13:01:47,995 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 111 predicate places. [2024-05-12 13:01:47,995 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 203 transitions, 1544 flow [2024-05-12 13:01:47,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:47,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:47,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:47,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-05-12 13:01:47,996 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:47,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:47,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1647520218, now seen corresponding path program 1 times [2024-05-12 13:01:47,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:47,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715890954] [2024-05-12 13:01:47,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:47,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:49,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:49,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:49,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715890954] [2024-05-12 13:01:49,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715890954] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:49,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:49,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:01:49,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915149097] [2024-05-12 13:01:49,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:49,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:01:49,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:49,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:01:49,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:01:49,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:01:49,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 203 transitions, 1544 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:49,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:49,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:01:49,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:51,213 INFO L124 PetriNetUnfolderBase]: 6202/9751 cut-off events. [2024-05-12 13:01:51,213 INFO L125 PetriNetUnfolderBase]: For 362746/362746 co-relation queries the response was YES. [2024-05-12 13:01:51,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54028 conditions, 9751 events. 6202/9751 cut-off events. For 362746/362746 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 62503 event pairs, 1988 based on Foata normal form. 4/9559 useless extension candidates. Maximal degree in co-relation 53952. Up to 8664 conditions per place. [2024-05-12 13:01:51,309 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 235 selfloop transitions, 30 changer transitions 0/275 dead transitions. [2024-05-12 13:01:51,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 275 transitions, 2328 flow [2024-05-12 13:01:51,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:01:51,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:01:51,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-05-12 13:01:51,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078431372549019 [2024-05-12 13:01:51,311 INFO L175 Difference]: Start difference. First operand has 168 places, 203 transitions, 1544 flow. Second operand 10 states and 259 transitions. [2024-05-12 13:01:51,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 275 transitions, 2328 flow [2024-05-12 13:01:51,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 275 transitions, 2264 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-05-12 13:01:51,658 INFO L231 Difference]: Finished difference. Result has 174 places, 206 transitions, 1606 flow [2024-05-12 13:01:51,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1480, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1606, PETRI_PLACES=174, PETRI_TRANSITIONS=206} [2024-05-12 13:01:51,659 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 117 predicate places. [2024-05-12 13:01:51,659 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 206 transitions, 1606 flow [2024-05-12 13:01:51,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:51,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:51,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:51,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-05-12 13:01:51,659 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:51,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:51,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1590991660, now seen corresponding path program 2 times [2024-05-12 13:01:51,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:51,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942755428] [2024-05-12 13:01:51,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:51,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:52,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:52,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:52,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942755428] [2024-05-12 13:01:52,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942755428] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:52,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:52,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:01:52,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453931494] [2024-05-12 13:01:52,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:52,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:01:52,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:52,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:01:52,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:01:53,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:01:53,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 206 transitions, 1606 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:53,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:53,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:01:53,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:54,973 INFO L124 PetriNetUnfolderBase]: 6304/9844 cut-off events. [2024-05-12 13:01:54,973 INFO L125 PetriNetUnfolderBase]: For 386938/386942 co-relation queries the response was YES. [2024-05-12 13:01:55,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56283 conditions, 9844 events. 6304/9844 cut-off events. For 386938/386942 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 62677 event pairs, 1681 based on Foata normal form. 5/9676 useless extension candidates. Maximal degree in co-relation 56206. Up to 7495 conditions per place. [2024-05-12 13:01:55,073 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 169 selfloop transitions, 113 changer transitions 0/292 dead transitions. [2024-05-12 13:01:55,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 292 transitions, 2940 flow [2024-05-12 13:01:55,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:01:55,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:01:55,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 278 transitions. [2024-05-12 13:01:55,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5450980392156862 [2024-05-12 13:01:55,074 INFO L175 Difference]: Start difference. First operand has 174 places, 206 transitions, 1606 flow. Second operand 10 states and 278 transitions. [2024-05-12 13:01:55,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 292 transitions, 2940 flow [2024-05-12 13:01:55,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 292 transitions, 2838 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-05-12 13:01:55,484 INFO L231 Difference]: Finished difference. Result has 176 places, 215 transitions, 1918 flow [2024-05-12 13:01:55,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1918, PETRI_PLACES=176, PETRI_TRANSITIONS=215} [2024-05-12 13:01:55,484 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 119 predicate places. [2024-05-12 13:01:55,485 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 215 transitions, 1918 flow [2024-05-12 13:01:55,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:55,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:55,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:55,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-05-12 13:01:55,485 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:55,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:55,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1590997240, now seen corresponding path program 3 times [2024-05-12 13:01:55,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:55,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602977164] [2024-05-12 13:01:55,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:55,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:55,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:56,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:56,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:56,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602977164] [2024-05-12 13:01:56,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602977164] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:56,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:56,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:01:56,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432611898] [2024-05-12 13:01:56,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:56,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:01:56,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:56,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:01:56,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:01:56,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:01:56,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 215 transitions, 1918 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:56,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:56,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:01:56,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:58,754 INFO L124 PetriNetUnfolderBase]: 6294/9908 cut-off events. [2024-05-12 13:01:58,754 INFO L125 PetriNetUnfolderBase]: For 402176/402180 co-relation queries the response was YES. [2024-05-12 13:01:58,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57748 conditions, 9908 events. 6294/9908 cut-off events. For 402176/402180 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 63816 event pairs, 1693 based on Foata normal form. 5/9714 useless extension candidates. Maximal degree in co-relation 57670. Up to 7487 conditions per place. [2024-05-12 13:01:58,858 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 165 selfloop transitions, 114 changer transitions 0/289 dead transitions. [2024-05-12 13:01:58,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 289 transitions, 2888 flow [2024-05-12 13:01:58,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:01:58,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:01:58,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 274 transitions. [2024-05-12 13:01:58,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372549019607843 [2024-05-12 13:01:58,860 INFO L175 Difference]: Start difference. First operand has 176 places, 215 transitions, 1918 flow. Second operand 10 states and 274 transitions. [2024-05-12 13:01:58,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 289 transitions, 2888 flow [2024-05-12 13:01:59,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 289 transitions, 2690 flow, removed 56 selfloop flow, removed 5 redundant places. [2024-05-12 13:01:59,337 INFO L231 Difference]: Finished difference. Result has 181 places, 215 transitions, 1956 flow [2024-05-12 13:01:59,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1956, PETRI_PLACES=181, PETRI_TRANSITIONS=215} [2024-05-12 13:01:59,338 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 124 predicate places. [2024-05-12 13:01:59,338 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 215 transitions, 1956 flow [2024-05-12 13:01:59,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:59,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:59,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:59,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-05-12 13:01:59,339 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:59,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:59,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1734887770, now seen corresponding path program 4 times [2024-05-12 13:01:59,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:59,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419814339] [2024-05-12 13:01:59,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:59,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:00,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:02:00,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:00,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419814339] [2024-05-12 13:02:00,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419814339] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:00,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:00,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:02:00,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026451873] [2024-05-12 13:02:00,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:00,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:02:00,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:00,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:02:00,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:02:00,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:02:00,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 215 transitions, 1956 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:00,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:00,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:02:00,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:02:02,707 INFO L124 PetriNetUnfolderBase]: 6452/10162 cut-off events. [2024-05-12 13:02:02,708 INFO L125 PetriNetUnfolderBase]: For 426192/426196 co-relation queries the response was YES. [2024-05-12 13:02:02,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60377 conditions, 10162 events. 6452/10162 cut-off events. For 426192/426196 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 65666 event pairs, 1735 based on Foata normal form. 5/9977 useless extension candidates. Maximal degree in co-relation 60297. Up to 7620 conditions per place. [2024-05-12 13:02:02,820 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 175 selfloop transitions, 115 changer transitions 0/300 dead transitions. [2024-05-12 13:02:02,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 300 transitions, 3504 flow [2024-05-12 13:02:02,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:02:02,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:02:02,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 279 transitions. [2024-05-12 13:02:02,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5470588235294118 [2024-05-12 13:02:02,822 INFO L175 Difference]: Start difference. First operand has 181 places, 215 transitions, 1956 flow. Second operand 10 states and 279 transitions. [2024-05-12 13:02:02,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 300 transitions, 3504 flow [2024-05-12 13:02:03,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 300 transitions, 3250 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-05-12 13:02:03,319 INFO L231 Difference]: Finished difference. Result has 182 places, 224 transitions, 2114 flow [2024-05-12 13:02:03,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2114, PETRI_PLACES=182, PETRI_TRANSITIONS=224} [2024-05-12 13:02:03,319 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 125 predicate places. [2024-05-12 13:02:03,319 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 224 transitions, 2114 flow [2024-05-12 13:02:03,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:03,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:03,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:02:03,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-05-12 13:02:03,320 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:02:03,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:03,320 INFO L85 PathProgramCache]: Analyzing trace with hash -415442452, now seen corresponding path program 5 times [2024-05-12 13:02:03,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:03,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618789500] [2024-05-12 13:02:03,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:03,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:04,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:02:04,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:04,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618789500] [2024-05-12 13:02:04,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618789500] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:04,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:04,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:02:04,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21624550] [2024-05-12 13:02:04,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:04,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:02:04,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:04,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:02:04,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:02:04,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:02:04,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 224 transitions, 2114 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:04,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:04,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:02:04,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:02:06,643 INFO L124 PetriNetUnfolderBase]: 6442/10148 cut-off events. [2024-05-12 13:02:06,643 INFO L125 PetriNetUnfolderBase]: For 436005/436009 co-relation queries the response was YES. [2024-05-12 13:02:06,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60267 conditions, 10148 events. 6442/10148 cut-off events. For 436005/436009 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 65532 event pairs, 1735 based on Foata normal form. 5/9963 useless extension candidates. Maximal degree in co-relation 60186. Up to 7612 conditions per place. [2024-05-12 13:02:06,755 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 172 selfloop transitions, 116 changer transitions 0/298 dead transitions. [2024-05-12 13:02:06,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 298 transitions, 3300 flow [2024-05-12 13:02:06,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:02:06,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:02:06,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 276 transitions. [2024-05-12 13:02:06,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5411764705882353 [2024-05-12 13:02:06,756 INFO L175 Difference]: Start difference. First operand has 182 places, 224 transitions, 2114 flow. Second operand 10 states and 276 transitions. [2024-05-12 13:02:06,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 298 transitions, 3300 flow [2024-05-12 13:02:07,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 298 transitions, 3067 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-05-12 13:02:07,320 INFO L231 Difference]: Finished difference. Result has 187 places, 224 transitions, 2121 flow [2024-05-12 13:02:07,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1881, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2121, PETRI_PLACES=187, PETRI_TRANSITIONS=224} [2024-05-12 13:02:07,321 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 130 predicate places. [2024-05-12 13:02:07,321 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 224 transitions, 2121 flow [2024-05-12 13:02:07,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:07,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:07,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:02:07,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-05-12 13:02:07,322 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:02:07,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:07,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1735089580, now seen corresponding path program 6 times [2024-05-12 13:02:07,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:07,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493687260] [2024-05-12 13:02:07,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:07,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:07,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:08,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:02:08,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:08,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493687260] [2024-05-12 13:02:08,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493687260] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:08,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:08,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:02:08,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117014502] [2024-05-12 13:02:08,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:08,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:02:08,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:08,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:02:08,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:02:08,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:02:08,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 224 transitions, 2121 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:08,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:08,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:02:08,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:02:10,690 INFO L124 PetriNetUnfolderBase]: 6432/10134 cut-off events. [2024-05-12 13:02:10,691 INFO L125 PetriNetUnfolderBase]: For 444426/444430 co-relation queries the response was YES. [2024-05-12 13:02:10,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59984 conditions, 10134 events. 6432/10134 cut-off events. For 444426/444430 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 65480 event pairs, 1742 based on Foata normal form. 5/9949 useless extension candidates. Maximal degree in co-relation 59902. Up to 7604 conditions per place. [2024-05-12 13:02:10,995 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 167 selfloop transitions, 118 changer transitions 0/295 dead transitions. [2024-05-12 13:02:10,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 295 transitions, 3105 flow [2024-05-12 13:02:10,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:02:10,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:02:10,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 272 transitions. [2024-05-12 13:02:10,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-05-12 13:02:10,997 INFO L175 Difference]: Start difference. First operand has 187 places, 224 transitions, 2121 flow. Second operand 10 states and 272 transitions. [2024-05-12 13:02:10,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 295 transitions, 3105 flow [2024-05-12 13:02:11,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 295 transitions, 2890 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-05-12 13:02:11,524 INFO L231 Difference]: Finished difference. Result has 190 places, 224 transitions, 2150 flow [2024-05-12 13:02:11,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1906, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2150, PETRI_PLACES=190, PETRI_TRANSITIONS=224} [2024-05-12 13:02:11,525 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 133 predicate places. [2024-05-12 13:02:11,525 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 224 transitions, 2150 flow [2024-05-12 13:02:11,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:11,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:11,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:02:11,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-05-12 13:02:11,525 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:02:11,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:11,526 INFO L85 PathProgramCache]: Analyzing trace with hash 177736058, now seen corresponding path program 1 times [2024-05-12 13:02:11,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:11,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103636405] [2024-05-12 13:02:11,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:11,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:12,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:02:12,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:12,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103636405] [2024-05-12 13:02:12,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103636405] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:12,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:12,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:02:12,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087542280] [2024-05-12 13:02:12,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:12,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:02:12,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:12,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:02:12,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:02:12,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2024-05-12 13:02:12,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 224 transitions, 2150 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:12,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:12,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2024-05-12 13:02:12,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:02:14,259 INFO L124 PetriNetUnfolderBase]: 5753/9318 cut-off events. [2024-05-12 13:02:14,259 INFO L125 PetriNetUnfolderBase]: For 449957/450031 co-relation queries the response was YES. [2024-05-12 13:02:14,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56017 conditions, 9318 events. 5753/9318 cut-off events. For 449957/450031 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 62267 event pairs, 1925 based on Foata normal form. 5/9093 useless extension candidates. Maximal degree in co-relation 55934. Up to 7936 conditions per place. [2024-05-12 13:02:14,353 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 197 selfloop transitions, 27 changer transitions 0/269 dead transitions. [2024-05-12 13:02:14,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 269 transitions, 2863 flow [2024-05-12 13:02:14,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:02:14,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:02:14,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-05-12 13:02:14,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49264705882352944 [2024-05-12 13:02:14,355 INFO L175 Difference]: Start difference. First operand has 190 places, 224 transitions, 2150 flow. Second operand 8 states and 201 transitions. [2024-05-12 13:02:14,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 269 transitions, 2863 flow [2024-05-12 13:02:14,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 269 transitions, 2589 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-05-12 13:02:14,899 INFO L231 Difference]: Finished difference. Result has 192 places, 241 transitions, 2164 flow [2024-05-12 13:02:14,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1890, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2164, PETRI_PLACES=192, PETRI_TRANSITIONS=241} [2024-05-12 13:02:14,900 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 135 predicate places. [2024-05-12 13:02:14,900 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 241 transitions, 2164 flow [2024-05-12 13:02:14,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:14,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:14,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:02:14,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-05-12 13:02:14,901 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:02:14,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:14,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1507865812, now seen corresponding path program 7 times [2024-05-12 13:02:14,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:14,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498587219] [2024-05-12 13:02:14,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:14,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:16,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:02:16,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:16,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498587219] [2024-05-12 13:02:16,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498587219] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:16,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:16,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:02:16,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065875025] [2024-05-12 13:02:16,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:16,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:02:16,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:16,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:02:16,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:02:16,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:02:16,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 241 transitions, 2164 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:16,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:16,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:02:16,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:02:18,416 INFO L124 PetriNetUnfolderBase]: 6589/10427 cut-off events. [2024-05-12 13:02:18,416 INFO L125 PetriNetUnfolderBase]: For 486388/486392 co-relation queries the response was YES. [2024-05-12 13:02:18,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62761 conditions, 10427 events. 6589/10427 cut-off events. For 486388/486392 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 67743 event pairs, 1817 based on Foata normal form. 5/10223 useless extension candidates. Maximal degree in co-relation 62673. Up to 7721 conditions per place. [2024-05-12 13:02:18,539 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 181 selfloop transitions, 127 changer transitions 0/318 dead transitions. [2024-05-12 13:02:18,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 318 transitions, 3546 flow [2024-05-12 13:02:18,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:02:18,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:02:18,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 274 transitions. [2024-05-12 13:02:18,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372549019607843 [2024-05-12 13:02:18,540 INFO L175 Difference]: Start difference. First operand has 192 places, 241 transitions, 2164 flow. Second operand 10 states and 274 transitions. [2024-05-12 13:02:18,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 318 transitions, 3546 flow [2024-05-12 13:02:19,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 318 transitions, 3498 flow, removed 23 selfloop flow, removed 1 redundant places. [2024-05-12 13:02:19,118 INFO L231 Difference]: Finished difference. Result has 201 places, 247 transitions, 2496 flow [2024-05-12 13:02:19,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2118, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2496, PETRI_PLACES=201, PETRI_TRANSITIONS=247} [2024-05-12 13:02:19,119 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 144 predicate places. [2024-05-12 13:02:19,119 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 247 transitions, 2496 flow [2024-05-12 13:02:19,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:19,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:19,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:02:19,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-05-12 13:02:19,120 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:02:19,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:19,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1500231535, now seen corresponding path program 1 times [2024-05-12 13:02:19,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:19,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108284927] [2024-05-12 13:02:19,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:19,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:20,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:02:20,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:20,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108284927] [2024-05-12 13:02:20,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108284927] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:20,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:20,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:02:20,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211977596] [2024-05-12 13:02:20,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:20,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:02:20,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:20,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:02:20,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:02:20,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-05-12 13:02:20,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 247 transitions, 2496 flow. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:20,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:20,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-05-12 13:02:20,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:02:22,571 INFO L124 PetriNetUnfolderBase]: 6252/9936 cut-off events. [2024-05-12 13:02:22,572 INFO L125 PetriNetUnfolderBase]: For 506866/506880 co-relation queries the response was YES. [2024-05-12 13:02:22,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62265 conditions, 9936 events. 6252/9936 cut-off events. For 506866/506880 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 65158 event pairs, 1927 based on Foata normal form. 15/9725 useless extension candidates. Maximal degree in co-relation 62174. Up to 8516 conditions per place. [2024-05-12 13:02:22,691 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 238 selfloop transitions, 44 changer transitions 0/307 dead transitions. [2024-05-12 13:02:22,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 307 transitions, 3329 flow [2024-05-12 13:02:22,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:02:22,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:02:22,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-05-12 13:02:22,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5206971677559913 [2024-05-12 13:02:22,693 INFO L175 Difference]: Start difference. First operand has 201 places, 247 transitions, 2496 flow. Second operand 9 states and 239 transitions. [2024-05-12 13:02:22,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 307 transitions, 3329 flow [2024-05-12 13:02:23,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 307 transitions, 3089 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-05-12 13:02:23,305 INFO L231 Difference]: Finished difference. Result has 205 places, 252 transitions, 2436 flow [2024-05-12 13:02:23,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2260, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2436, PETRI_PLACES=205, PETRI_TRANSITIONS=252} [2024-05-12 13:02:23,306 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 148 predicate places. [2024-05-12 13:02:23,306 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 252 transitions, 2436 flow [2024-05-12 13:02:23,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:23,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:23,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:02:23,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-05-12 13:02:23,307 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:02:23,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:23,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1500508582, now seen corresponding path program 8 times [2024-05-12 13:02:23,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:23,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529815896] [2024-05-12 13:02:23,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:23,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:24,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:02:24,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:24,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529815896] [2024-05-12 13:02:24,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529815896] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:24,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:24,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:02:24,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624698872] [2024-05-12 13:02:24,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:24,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:02:24,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:24,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:02:24,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:02:24,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:02:24,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 252 transitions, 2436 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:24,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:24,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:02:24,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:02:26,828 INFO L124 PetriNetUnfolderBase]: 6672/10573 cut-off events. [2024-05-12 13:02:26,828 INFO L125 PetriNetUnfolderBase]: For 525589/525593 co-relation queries the response was YES. [2024-05-12 13:02:26,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65297 conditions, 10573 events. 6672/10573 cut-off events. For 525589/525593 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 68986 event pairs, 1804 based on Foata normal form. 5/10361 useless extension candidates. Maximal degree in co-relation 65204. Up to 7815 conditions per place. [2024-05-12 13:02:26,954 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 180 selfloop transitions, 135 changer transitions 0/325 dead transitions. [2024-05-12 13:02:26,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 325 transitions, 3791 flow [2024-05-12 13:02:26,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:02:26,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:02:26,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 272 transitions. [2024-05-12 13:02:26,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-05-12 13:02:26,955 INFO L175 Difference]: Start difference. First operand has 205 places, 252 transitions, 2436 flow. Second operand 10 states and 272 transitions. [2024-05-12 13:02:26,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 325 transitions, 3791 flow [2024-05-12 13:02:27,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 325 transitions, 3660 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-05-12 13:02:27,564 INFO L231 Difference]: Finished difference. Result has 209 places, 255 transitions, 2638 flow [2024-05-12 13:02:27,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2305, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2638, PETRI_PLACES=209, PETRI_TRANSITIONS=255} [2024-05-12 13:02:27,565 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 152 predicate places. [2024-05-12 13:02:27,565 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 255 transitions, 2638 flow [2024-05-12 13:02:27,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:27,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:27,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:02:27,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-05-12 13:02:27,566 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:02:27,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:27,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1507860232, now seen corresponding path program 9 times [2024-05-12 13:02:27,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:27,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443170768] [2024-05-12 13:02:27,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:27,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:28,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:02:28,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:28,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443170768] [2024-05-12 13:02:28,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443170768] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:28,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:28,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:02:28,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080804277] [2024-05-12 13:02:28,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:28,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:02:28,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:28,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:02:28,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:02:28,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:02:28,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 255 transitions, 2638 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:28,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:28,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:02:28,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:02:31,263 INFO L124 PetriNetUnfolderBase]: 6718/10656 cut-off events. [2024-05-12 13:02:31,263 INFO L125 PetriNetUnfolderBase]: For 546718/546722 co-relation queries the response was YES. [2024-05-12 13:02:31,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66741 conditions, 10656 events. 6718/10656 cut-off events. For 546718/546722 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 69690 event pairs, 1835 based on Foata normal form. 5/10450 useless extension candidates. Maximal degree in co-relation 66647. Up to 7854 conditions per place. [2024-05-12 13:02:31,368 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 186 selfloop transitions, 133 changer transitions 0/329 dead transitions. [2024-05-12 13:02:31,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 329 transitions, 4021 flow [2024-05-12 13:02:31,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:02:31,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:02:31,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 275 transitions. [2024-05-12 13:02:31,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5392156862745098 [2024-05-12 13:02:31,369 INFO L175 Difference]: Start difference. First operand has 209 places, 255 transitions, 2638 flow. Second operand 10 states and 275 transitions. [2024-05-12 13:02:31,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 329 transitions, 4021 flow [2024-05-12 13:02:31,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 329 transitions, 3813 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-05-12 13:02:31,897 INFO L231 Difference]: Finished difference. Result has 213 places, 258 transitions, 2765 flow [2024-05-12 13:02:31,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2437, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2765, PETRI_PLACES=213, PETRI_TRANSITIONS=258} [2024-05-12 13:02:31,898 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 156 predicate places. [2024-05-12 13:02:31,898 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 258 transitions, 2765 flow [2024-05-12 13:02:31,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:31,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:31,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:02:31,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-05-12 13:02:31,898 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:02:31,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:31,899 INFO L85 PathProgramCache]: Analyzing trace with hash 766641150, now seen corresponding path program 10 times [2024-05-12 13:02:31,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:31,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307243468] [2024-05-12 13:02:31,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:31,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:33,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:02:33,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:33,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307243468] [2024-05-12 13:02:33,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307243468] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:33,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:33,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:02:33,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700992304] [2024-05-12 13:02:33,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:33,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:02:33,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:33,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:02:33,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:02:33,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:02:33,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 258 transitions, 2765 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:33,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:33,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:02:33,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:02:35,772 INFO L124 PetriNetUnfolderBase]: 6708/10643 cut-off events. [2024-05-12 13:02:35,772 INFO L125 PetriNetUnfolderBase]: For 558821/558825 co-relation queries the response was YES. [2024-05-12 13:02:35,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66594 conditions, 10643 events. 6708/10643 cut-off events. For 558821/558825 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 69635 event pairs, 1830 based on Foata normal form. 5/10433 useless extension candidates. Maximal degree in co-relation 66499. Up to 7846 conditions per place. [2024-05-12 13:02:35,913 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 185 selfloop transitions, 132 changer transitions 0/327 dead transitions. [2024-05-12 13:02:35,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 327 transitions, 3869 flow [2024-05-12 13:02:35,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:02:35,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:02:35,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 274 transitions. [2024-05-12 13:02:35,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372549019607843 [2024-05-12 13:02:35,914 INFO L175 Difference]: Start difference. First operand has 213 places, 258 transitions, 2765 flow. Second operand 10 states and 274 transitions. [2024-05-12 13:02:35,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 327 transitions, 3869 flow [2024-05-12 13:02:36,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 327 transitions, 3565 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-05-12 13:02:36,640 INFO L231 Difference]: Finished difference. Result has 216 places, 258 transitions, 2733 flow [2024-05-12 13:02:36,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2461, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2733, PETRI_PLACES=216, PETRI_TRANSITIONS=258} [2024-05-12 13:02:36,641 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 159 predicate places. [2024-05-12 13:02:36,641 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 258 transitions, 2733 flow [2024-05-12 13:02:36,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:36,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:36,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:02:36,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-05-12 13:02:36,642 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:02:36,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:36,642 INFO L85 PathProgramCache]: Analyzing trace with hash -128454042, now seen corresponding path program 1 times [2024-05-12 13:02:36,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:36,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229305062] [2024-05-12 13:02:36,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:36,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:37,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:02:37,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:37,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229305062] [2024-05-12 13:02:37,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229305062] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:37,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:37,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:02:37,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44326591] [2024-05-12 13:02:37,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:37,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:02:37,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:37,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:02:37,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:02:37,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 51 [2024-05-12 13:02:37,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 258 transitions, 2733 flow. Second operand has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:37,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:37,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 51 [2024-05-12 13:02:37,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:02:39,612 INFO L124 PetriNetUnfolderBase]: 5533/9085 cut-off events. [2024-05-12 13:02:39,613 INFO L125 PetriNetUnfolderBase]: For 561062/561258 co-relation queries the response was YES. [2024-05-12 13:02:39,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59128 conditions, 9085 events. 5533/9085 cut-off events. For 561062/561258 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 61852 event pairs, 1795 based on Foata normal form. 19/8805 useless extension candidates. Maximal degree in co-relation 59032. Up to 7572 conditions per place. [2024-05-12 13:02:39,727 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 207 selfloop transitions, 21 changer transitions 0/288 dead transitions. [2024-05-12 13:02:39,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 288 transitions, 3315 flow [2024-05-12 13:02:39,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:02:39,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:02:39,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-05-12 13:02:39,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210084033613446 [2024-05-12 13:02:39,728 INFO L175 Difference]: Start difference. First operand has 216 places, 258 transitions, 2733 flow. Second operand 7 states and 186 transitions. [2024-05-12 13:02:39,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 288 transitions, 3315 flow [2024-05-12 13:02:40,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 288 transitions, 2965 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-05-12 13:02:40,541 INFO L231 Difference]: Finished difference. Result has 212 places, 261 transitions, 2475 flow [2024-05-12 13:02:40,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2383, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2475, PETRI_PLACES=212, PETRI_TRANSITIONS=261} [2024-05-12 13:02:40,541 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 155 predicate places. [2024-05-12 13:02:40,542 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 261 transitions, 2475 flow [2024-05-12 13:02:40,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:40,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:40,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:02:40,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-05-12 13:02:40,542 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:02:40,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:40,543 INFO L85 PathProgramCache]: Analyzing trace with hash 177750008, now seen corresponding path program 2 times [2024-05-12 13:02:40,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:40,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459440850] [2024-05-12 13:02:40,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:40,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:40,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:41,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:02:41,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:41,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459440850] [2024-05-12 13:02:41,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459440850] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:41,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:41,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:02:41,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105525367] [2024-05-12 13:02:41,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:41,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:02:41,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:41,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:02:41,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:02:41,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2024-05-12 13:02:41,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 261 transitions, 2475 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:41,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:41,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2024-05-12 13:02:41,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:02:43,393 INFO L124 PetriNetUnfolderBase]: 5961/9680 cut-off events. [2024-05-12 13:02:43,394 INFO L125 PetriNetUnfolderBase]: For 573753/573809 co-relation queries the response was YES. [2024-05-12 13:02:43,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61967 conditions, 9680 events. 5961/9680 cut-off events. For 573753/573809 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 65140 event pairs, 1880 based on Foata normal form. 6/9436 useless extension candidates. Maximal degree in co-relation 61870. Up to 8186 conditions per place. [2024-05-12 13:02:43,503 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 215 selfloop transitions, 34 changer transitions 0/294 dead transitions. [2024-05-12 13:02:43,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 294 transitions, 3271 flow [2024-05-12 13:02:43,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:02:43,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:02:43,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-05-12 13:02:43,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5126050420168067 [2024-05-12 13:02:43,505 INFO L175 Difference]: Start difference. First operand has 212 places, 261 transitions, 2475 flow. Second operand 7 states and 183 transitions. [2024-05-12 13:02:43,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 294 transitions, 3271 flow [2024-05-12 13:02:44,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 294 transitions, 3201 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-05-12 13:02:44,295 INFO L231 Difference]: Finished difference. Result has 214 places, 267 transitions, 2581 flow [2024-05-12 13:02:44,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2405, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2581, PETRI_PLACES=214, PETRI_TRANSITIONS=267} [2024-05-12 13:02:44,295 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 157 predicate places. [2024-05-12 13:02:44,295 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 267 transitions, 2581 flow [2024-05-12 13:02:44,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:44,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:44,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:02:44,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-05-12 13:02:44,296 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:02:44,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:44,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1291291984, now seen corresponding path program 11 times [2024-05-12 13:02:44,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:44,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702309468] [2024-05-12 13:02:44,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:44,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:44,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:45,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:02:45,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:45,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702309468] [2024-05-12 13:02:45,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702309468] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:45,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:45,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:02:45,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911443353] [2024-05-12 13:02:45,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:45,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:02:45,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:45,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:02:45,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:02:45,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:02:45,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 267 transitions, 2581 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:45,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:45,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:02:45,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:02:47,962 INFO L124 PetriNetUnfolderBase]: 6864/10886 cut-off events. [2024-05-12 13:02:47,962 INFO L125 PetriNetUnfolderBase]: For 618784/618784 co-relation queries the response was YES. [2024-05-12 13:02:48,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69332 conditions, 10886 events. 6864/10886 cut-off events. For 618784/618784 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 71364 event pairs, 1848 based on Foata normal form. 4/10677 useless extension candidates. Maximal degree in co-relation 69234. Up to 8005 conditions per place. [2024-05-12 13:02:48,085 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 195 selfloop transitions, 137 changer transitions 0/342 dead transitions. [2024-05-12 13:02:48,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 342 transitions, 4075 flow [2024-05-12 13:02:48,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:02:48,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:02:48,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 271 transitions. [2024-05-12 13:02:48,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5313725490196078 [2024-05-12 13:02:48,086 INFO L175 Difference]: Start difference. First operand has 214 places, 267 transitions, 2581 flow. Second operand 10 states and 271 transitions. [2024-05-12 13:02:48,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 342 transitions, 4075 flow [2024-05-12 13:02:48,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 342 transitions, 4019 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-05-12 13:02:48,752 INFO L231 Difference]: Finished difference. Result has 222 places, 273 transitions, 2935 flow [2024-05-12 13:02:48,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2525, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2935, PETRI_PLACES=222, PETRI_TRANSITIONS=273} [2024-05-12 13:02:48,753 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 165 predicate places. [2024-05-12 13:02:48,753 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 273 transitions, 2935 flow [2024-05-12 13:02:48,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:48,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:48,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:02:48,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-05-12 13:02:48,754 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:02:48,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:48,754 INFO L85 PathProgramCache]: Analyzing trace with hash -764146900, now seen corresponding path program 12 times [2024-05-12 13:02:48,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:48,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661953536] [2024-05-12 13:02:48,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:48,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:50,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:02:50,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:50,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661953536] [2024-05-12 13:02:50,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661953536] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:50,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:50,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:02:50,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556087851] [2024-05-12 13:02:50,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:50,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:02:50,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:50,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:02:50,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:02:50,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:02:50,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 273 transitions, 2935 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:50,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:50,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:02:50,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:02:52,549 INFO L124 PetriNetUnfolderBase]: 6910/10945 cut-off events. [2024-05-12 13:02:52,549 INFO L125 PetriNetUnfolderBase]: For 643701/643701 co-relation queries the response was YES. [2024-05-12 13:02:52,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71334 conditions, 10945 events. 6910/10945 cut-off events. For 643701/643701 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 71530 event pairs, 1840 based on Foata normal form. 4/10744 useless extension candidates. Maximal degree in co-relation 71234. Up to 8044 conditions per place. [2024-05-12 13:02:52,675 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 188 selfloop transitions, 145 changer transitions 0/343 dead transitions. [2024-05-12 13:02:52,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 343 transitions, 4147 flow [2024-05-12 13:02:52,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:02:52,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:02:52,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 267 transitions. [2024-05-12 13:02:52,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5235294117647059 [2024-05-12 13:02:52,676 INFO L175 Difference]: Start difference. First operand has 222 places, 273 transitions, 2935 flow. Second operand 10 states and 267 transitions. [2024-05-12 13:02:52,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 343 transitions, 4147 flow [2024-05-12 13:02:53,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 343 transitions, 3584 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-05-12 13:02:53,474 INFO L231 Difference]: Finished difference. Result has 222 places, 276 transitions, 2740 flow [2024-05-12 13:02:53,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2393, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2740, PETRI_PLACES=222, PETRI_TRANSITIONS=276} [2024-05-12 13:02:53,475 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 165 predicate places. [2024-05-12 13:02:53,475 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 276 transitions, 2740 flow [2024-05-12 13:02:53,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:53,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:53,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:02:53,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-05-12 13:02:53,476 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:02:53,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:53,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1291493794, now seen corresponding path program 13 times [2024-05-12 13:02:53,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:53,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850724483] [2024-05-12 13:02:53,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:53,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:54,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:02:54,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:54,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850724483] [2024-05-12 13:02:54,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850724483] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:54,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:54,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:02:54,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994886899] [2024-05-12 13:02:54,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:54,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:02:54,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:54,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:02:54,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:02:54,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:02:54,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 276 transitions, 2740 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:54,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:54,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:02:54,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:02:57,155 INFO L124 PetriNetUnfolderBase]: 6900/10945 cut-off events. [2024-05-12 13:02:57,155 INFO L125 PetriNetUnfolderBase]: For 640019/640019 co-relation queries the response was YES. [2024-05-12 13:02:57,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70929 conditions, 10945 events. 6900/10945 cut-off events. For 640019/640019 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 71850 event pairs, 1842 based on Foata normal form. 4/10739 useless extension candidates. Maximal degree in co-relation 70828. Up to 8036 conditions per place. [2024-05-12 13:02:57,288 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 191 selfloop transitions, 142 changer transitions 0/343 dead transitions. [2024-05-12 13:02:57,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 343 transitions, 3886 flow [2024-05-12 13:02:57,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:02:57,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:02:57,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 268 transitions. [2024-05-12 13:02:57,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254901960784314 [2024-05-12 13:02:57,291 INFO L175 Difference]: Start difference. First operand has 222 places, 276 transitions, 2740 flow. Second operand 10 states and 268 transitions. [2024-05-12 13:02:57,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 343 transitions, 3886 flow [2024-05-12 13:02:58,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 343 transitions, 3465 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-05-12 13:02:58,116 INFO L231 Difference]: Finished difference. Result has 224 places, 276 transitions, 2611 flow [2024-05-12 13:02:58,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2319, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2611, PETRI_PLACES=224, PETRI_TRANSITIONS=276} [2024-05-12 13:02:58,117 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 167 predicate places. [2024-05-12 13:02:58,117 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 276 transitions, 2611 flow [2024-05-12 13:02:58,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:58,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:58,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:02:58,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-05-12 13:02:58,117 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:02:58,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:58,118 INFO L85 PathProgramCache]: Analyzing trace with hash -756512623, now seen corresponding path program 2 times [2024-05-12 13:02:58,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:58,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99130856] [2024-05-12 13:02:58,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:58,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:59,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:02:59,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:59,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99130856] [2024-05-12 13:02:59,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99130856] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:59,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:59,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:02:59,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234909259] [2024-05-12 13:02:59,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:59,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:02:59,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:59,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:02:59,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:02:59,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-05-12 13:02:59,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 276 transitions, 2611 flow. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:59,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:59,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-05-12 13:02:59,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:01,819 INFO L124 PetriNetUnfolderBase]: 6567/10463 cut-off events. [2024-05-12 13:03:01,819 INFO L125 PetriNetUnfolderBase]: For 653463/653477 co-relation queries the response was YES. [2024-05-12 13:03:01,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68640 conditions, 10463 events. 6567/10463 cut-off events. For 653463/653477 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 69403 event pairs, 1971 based on Foata normal form. 16/10248 useless extension candidates. Maximal degree in co-relation 68538. Up to 8937 conditions per place. [2024-05-12 13:03:01,947 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 261 selfloop transitions, 45 changer transitions 0/333 dead transitions. [2024-05-12 13:03:01,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 333 transitions, 3483 flow [2024-05-12 13:03:01,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:03:01,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:03:01,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-05-12 13:03:01,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.514161220043573 [2024-05-12 13:03:01,949 INFO L175 Difference]: Start difference. First operand has 224 places, 276 transitions, 2611 flow. Second operand 9 states and 236 transitions. [2024-05-12 13:03:01,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 333 transitions, 3483 flow [2024-05-12 13:03:02,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 333 transitions, 3206 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-05-12 13:03:02,626 INFO L231 Difference]: Finished difference. Result has 226 places, 281 transitions, 2523 flow [2024-05-12 13:03:02,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2338, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2523, PETRI_PLACES=226, PETRI_TRANSITIONS=281} [2024-05-12 13:03:02,627 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 169 predicate places. [2024-05-12 13:03:02,627 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 281 transitions, 2523 flow [2024-05-12 13:03:02,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:02,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:02,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:02,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-05-12 13:03:02,628 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:03:02,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:02,629 INFO L85 PathProgramCache]: Analyzing trace with hash -508351245, now seen corresponding path program 3 times [2024-05-12 13:03:02,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:02,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212151657] [2024-05-12 13:03:02,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:02,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:04,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:03:04,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:04,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212151657] [2024-05-12 13:03:04,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212151657] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:04,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:04,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:03:04,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226116717] [2024-05-12 13:03:04,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:04,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:03:04,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:04,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:03:04,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:03:04,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-05-12 13:03:04,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 281 transitions, 2523 flow. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:04,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:04,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-05-12 13:03:04,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:06,531 INFO L124 PetriNetUnfolderBase]: 6627/10564 cut-off events. [2024-05-12 13:03:06,531 INFO L125 PetriNetUnfolderBase]: For 679402/679412 co-relation queries the response was YES. [2024-05-12 13:03:06,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69618 conditions, 10564 events. 6627/10564 cut-off events. For 679402/679412 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 70217 event pairs, 1975 based on Foata normal form. 14/10354 useless extension candidates. Maximal degree in co-relation 69514. Up to 9016 conditions per place. [2024-05-12 13:03:06,655 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 260 selfloop transitions, 52 changer transitions 0/339 dead transitions. [2024-05-12 13:03:06,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 339 transitions, 3431 flow [2024-05-12 13:03:06,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:03:06,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:03:06,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2024-05-12 13:03:06,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.492156862745098 [2024-05-12 13:03:06,656 INFO L175 Difference]: Start difference. First operand has 226 places, 281 transitions, 2523 flow. Second operand 10 states and 251 transitions. [2024-05-12 13:03:06,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 339 transitions, 3431 flow [2024-05-12 13:03:07,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 339 transitions, 3282 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-05-12 13:03:07,425 INFO L231 Difference]: Finished difference. Result has 232 places, 289 transitions, 2623 flow [2024-05-12 13:03:07,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2382, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2623, PETRI_PLACES=232, PETRI_TRANSITIONS=289} [2024-05-12 13:03:07,426 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 175 predicate places. [2024-05-12 13:03:07,426 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 289 transitions, 2623 flow [2024-05-12 13:03:07,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:07,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:07,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:07,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-05-12 13:03:07,427 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:03:07,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:07,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1284142144, now seen corresponding path program 14 times [2024-05-12 13:03:07,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:07,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182015108] [2024-05-12 13:03:07,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:07,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:08,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:03:08,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:08,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182015108] [2024-05-12 13:03:08,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182015108] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:08,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:08,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:03:08,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381045197] [2024-05-12 13:03:08,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:08,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:03:08,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:08,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:03:08,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:03:08,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:03:08,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 289 transitions, 2623 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:08,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:08,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:03:08,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:11,272 INFO L124 PetriNetUnfolderBase]: 7043/11202 cut-off events. [2024-05-12 13:03:11,272 INFO L125 PetriNetUnfolderBase]: For 704597/704597 co-relation queries the response was YES. [2024-05-12 13:03:11,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73680 conditions, 11202 events. 7043/11202 cut-off events. For 704597/704597 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 73958 event pairs, 1865 based on Foata normal form. 4/10996 useless extension candidates. Maximal degree in co-relation 73573. Up to 8200 conditions per place. [2024-05-12 13:03:11,407 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 203 selfloop transitions, 146 changer transitions 0/359 dead transitions. [2024-05-12 13:03:11,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 359 transitions, 3889 flow [2024-05-12 13:03:11,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:03:11,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:03:11,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 270 transitions. [2024-05-12 13:03:11,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2024-05-12 13:03:11,408 INFO L175 Difference]: Start difference. First operand has 232 places, 289 transitions, 2623 flow. Second operand 10 states and 270 transitions. [2024-05-12 13:03:11,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 359 transitions, 3889 flow [2024-05-12 13:03:12,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 359 transitions, 3743 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-05-12 13:03:12,112 INFO L231 Difference]: Finished difference. Result has 237 places, 292 transitions, 2829 flow [2024-05-12 13:03:12,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2477, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2829, PETRI_PLACES=237, PETRI_TRANSITIONS=292} [2024-05-12 13:03:12,113 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 180 predicate places. [2024-05-12 13:03:12,113 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 292 transitions, 2829 flow [2024-05-12 13:03:12,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:12,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:12,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:12,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-05-12 13:03:12,114 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:03:12,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:12,114 INFO L85 PathProgramCache]: Analyzing trace with hash -194652015, now seen corresponding path program 4 times [2024-05-12 13:03:12,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:12,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211587450] [2024-05-12 13:03:12,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:12,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:13,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:03:13,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:13,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211587450] [2024-05-12 13:03:13,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211587450] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:13,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:13,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:03:13,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720780030] [2024-05-12 13:03:13,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:13,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:03:13,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:13,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:03:13,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:03:13,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-05-12 13:03:13,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 292 transitions, 2829 flow. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:13,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:13,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-05-12 13:03:13,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:15,989 INFO L124 PetriNetUnfolderBase]: 6710/10711 cut-off events. [2024-05-12 13:03:15,990 INFO L125 PetriNetUnfolderBase]: For 723121/723129 co-relation queries the response was YES. [2024-05-12 13:03:16,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72565 conditions, 10711 events. 6710/10711 cut-off events. For 723121/723129 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 71508 event pairs, 1986 based on Foata normal form. 12/10486 useless extension candidates. Maximal degree in co-relation 72456. Up to 9135 conditions per place. [2024-05-12 13:03:16,116 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 265 selfloop transitions, 54 changer transitions 0/346 dead transitions. [2024-05-12 13:03:16,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 346 transitions, 3715 flow [2024-05-12 13:03:16,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:03:16,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:03:16,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-05-12 13:03:16,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-05-12 13:03:16,117 INFO L175 Difference]: Start difference. First operand has 237 places, 292 transitions, 2829 flow. Second operand 9 states and 234 transitions. [2024-05-12 13:03:16,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 346 transitions, 3715 flow [2024-05-12 13:03:16,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 346 transitions, 3416 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-05-12 13:03:16,806 INFO L231 Difference]: Finished difference. Result has 239 places, 296 transitions, 2733 flow [2024-05-12 13:03:16,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2531, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2733, PETRI_PLACES=239, PETRI_TRANSITIONS=296} [2024-05-12 13:03:16,807 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 182 predicate places. [2024-05-12 13:03:16,807 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 296 transitions, 2733 flow [2024-05-12 13:03:16,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:16,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:16,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:16,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-05-12 13:03:16,807 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:03:16,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:16,808 INFO L85 PathProgramCache]: Analyzing trace with hash -183224175, now seen corresponding path program 5 times [2024-05-12 13:03:16,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:16,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894364745] [2024-05-12 13:03:16,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:16,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:18,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:03:18,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:18,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894364745] [2024-05-12 13:03:18,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894364745] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:18,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:18,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:03:18,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705119262] [2024-05-12 13:03:18,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:18,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:03:18,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:18,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:03:18,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:03:18,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-05-12 13:03:18,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 296 transitions, 2733 flow. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:18,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:18,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-05-12 13:03:18,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:20,553 INFO L124 PetriNetUnfolderBase]: 6702/10710 cut-off events. [2024-05-12 13:03:20,553 INFO L125 PetriNetUnfolderBase]: For 734442/734450 co-relation queries the response was YES. [2024-05-12 13:03:20,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71727 conditions, 10710 events. 6702/10710 cut-off events. For 734442/734450 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 71555 event pairs, 1872 based on Foata normal form. 12/10480 useless extension candidates. Maximal degree in co-relation 71617. Up to 8944 conditions per place. [2024-05-12 13:03:20,674 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 259 selfloop transitions, 63 changer transitions 0/349 dead transitions. [2024-05-12 13:03:20,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 349 transitions, 3611 flow [2024-05-12 13:03:20,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:03:20,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:03:20,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-05-12 13:03:20,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119825708061002 [2024-05-12 13:03:20,676 INFO L175 Difference]: Start difference. First operand has 239 places, 296 transitions, 2733 flow. Second operand 9 states and 235 transitions. [2024-05-12 13:03:20,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 349 transitions, 3611 flow [2024-05-12 13:03:21,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 349 transitions, 3465 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-05-12 13:03:21,464 INFO L231 Difference]: Finished difference. Result has 243 places, 298 transitions, 2792 flow [2024-05-12 13:03:21,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2587, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2792, PETRI_PLACES=243, PETRI_TRANSITIONS=298} [2024-05-12 13:03:21,465 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 186 predicate places. [2024-05-12 13:03:21,465 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 298 transitions, 2792 flow [2024-05-12 13:03:21,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:21,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:21,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:21,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-05-12 13:03:21,465 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:03:21,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:21,466 INFO L85 PathProgramCache]: Analyzing trace with hash -508628292, now seen corresponding path program 15 times [2024-05-12 13:03:21,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:21,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343722800] [2024-05-12 13:03:21,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:21,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:22,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:03:22,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:22,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343722800] [2024-05-12 13:03:22,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343722800] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:22,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:22,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:03:22,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019231558] [2024-05-12 13:03:22,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:22,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:03:22,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:22,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:03:22,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:03:22,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:03:22,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 298 transitions, 2792 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:22,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:22,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:03:22,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:25,423 INFO L124 PetriNetUnfolderBase]: 7062/11281 cut-off events. [2024-05-12 13:03:25,423 INFO L125 PetriNetUnfolderBase]: For 749904/749904 co-relation queries the response was YES. [2024-05-12 13:03:25,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74496 conditions, 11281 events. 7062/11281 cut-off events. For 749904/749904 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 74909 event pairs, 1891 based on Foata normal form. 4/11053 useless extension candidates. Maximal degree in co-relation 74385. Up to 8235 conditions per place. [2024-05-12 13:03:25,554 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 193 selfloop transitions, 158 changer transitions 0/361 dead transitions. [2024-05-12 13:03:25,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 361 transitions, 3740 flow [2024-05-12 13:03:25,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:03:25,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:03:25,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 263 transitions. [2024-05-12 13:03:25,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515686274509804 [2024-05-12 13:03:25,555 INFO L175 Difference]: Start difference. First operand has 243 places, 298 transitions, 2792 flow. Second operand 10 states and 263 transitions. [2024-05-12 13:03:25,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 361 transitions, 3740 flow [2024-05-12 13:03:26,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 361 transitions, 3523 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-05-12 13:03:26,605 INFO L231 Difference]: Finished difference. Result has 246 places, 298 transitions, 2899 flow [2024-05-12 13:03:26,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2575, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2899, PETRI_PLACES=246, PETRI_TRANSITIONS=298} [2024-05-12 13:03:26,606 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 189 predicate places. [2024-05-12 13:03:26,606 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 298 transitions, 2899 flow [2024-05-12 13:03:26,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:26,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:26,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:26,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-05-12 13:03:26,607 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:03:26,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:26,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1169430490, now seen corresponding path program 2 times [2024-05-12 13:03:26,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:26,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8788439] [2024-05-12 13:03:26,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:26,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:28,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:03:28,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:28,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8788439] [2024-05-12 13:03:28,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8788439] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:28,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:28,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:03:28,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826103802] [2024-05-12 13:03:28,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:28,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:03:28,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:28,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:03:28,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:03:28,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 51 [2024-05-12 13:03:28,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 298 transitions, 2899 flow. Second operand has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:28,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:28,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 51 [2024-05-12 13:03:28,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:30,049 INFO L124 PetriNetUnfolderBase]: 5847/9762 cut-off events. [2024-05-12 13:03:30,050 INFO L125 PetriNetUnfolderBase]: For 749579/749752 co-relation queries the response was YES. [2024-05-12 13:03:30,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67256 conditions, 9762 events. 5847/9762 cut-off events. For 749579/749752 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 67965 event pairs, 1805 based on Foata normal form. 19/9369 useless extension candidates. Maximal degree in co-relation 67144. Up to 7929 conditions per place. [2024-05-12 13:03:30,186 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 235 selfloop transitions, 33 changer transitions 0/330 dead transitions. [2024-05-12 13:03:30,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 330 transitions, 3773 flow [2024-05-12 13:03:30,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:03:30,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:03:30,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-05-12 13:03:30,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182072829131653 [2024-05-12 13:03:30,187 INFO L175 Difference]: Start difference. First operand has 246 places, 298 transitions, 2899 flow. Second operand 7 states and 185 transitions. [2024-05-12 13:03:30,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 330 transitions, 3773 flow [2024-05-12 13:03:31,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 330 transitions, 3361 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-05-12 13:03:31,093 INFO L231 Difference]: Finished difference. Result has 242 places, 306 transitions, 2696 flow [2024-05-12 13:03:31,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2487, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2696, PETRI_PLACES=242, PETRI_TRANSITIONS=306} [2024-05-12 13:03:31,093 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 185 predicate places. [2024-05-12 13:03:31,094 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 306 transitions, 2696 flow [2024-05-12 13:03:31,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:31,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:31,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:31,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-05-12 13:03:31,094 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:03:31,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:31,094 INFO L85 PathProgramCache]: Analyzing trace with hash 190724004, now seen corresponding path program 3 times [2024-05-12 13:03:31,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:31,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51710338] [2024-05-12 13:03:31,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:31,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:32,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:03:32,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:32,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51710338] [2024-05-12 13:03:32,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51710338] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:32,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:32,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:03:32,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490655772] [2024-05-12 13:03:32,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:32,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:03:32,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:32,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:03:32,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:03:32,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 51 [2024-05-12 13:03:32,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 306 transitions, 2696 flow. Second operand has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:32,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:32,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 51 [2024-05-12 13:03:32,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:34,511 INFO L124 PetriNetUnfolderBase]: 5844/9754 cut-off events. [2024-05-12 13:03:34,511 INFO L125 PetriNetUnfolderBase]: For 766138/766231 co-relation queries the response was YES. [2024-05-12 13:03:34,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66837 conditions, 9754 events. 5844/9754 cut-off events. For 766138/766231 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 67888 event pairs, 1806 based on Foata normal form. 19/9361 useless extension candidates. Maximal degree in co-relation 66723. Up to 7959 conditions per place. [2024-05-12 13:03:34,645 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 242 selfloop transitions, 26 changer transitions 0/330 dead transitions. [2024-05-12 13:03:34,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 330 transitions, 3319 flow [2024-05-12 13:03:34,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:03:34,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:03:34,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-05-12 13:03:34,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5126050420168067 [2024-05-12 13:03:34,647 INFO L175 Difference]: Start difference. First operand has 242 places, 306 transitions, 2696 flow. Second operand 7 states and 183 transitions. [2024-05-12 13:03:34,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 330 transitions, 3319 flow [2024-05-12 13:03:35,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 330 transitions, 3205 flow, removed 44 selfloop flow, removed 3 redundant places. [2024-05-12 13:03:35,429 INFO L231 Difference]: Finished difference. Result has 246 places, 307 transitions, 2649 flow [2024-05-12 13:03:35,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2582, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2649, PETRI_PLACES=246, PETRI_TRANSITIONS=307} [2024-05-12 13:03:35,430 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 189 predicate places. [2024-05-12 13:03:35,430 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 307 transitions, 2649 flow [2024-05-12 13:03:35,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:35,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:35,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:35,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-05-12 13:03:35,431 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:03:35,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:35,432 INFO L85 PathProgramCache]: Analyzing trace with hash 315296822, now seen corresponding path program 3 times [2024-05-12 13:03:35,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:35,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473334093] [2024-05-12 13:03:35,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:35,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:36,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:03:36,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:36,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473334093] [2024-05-12 13:03:36,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473334093] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:36,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:36,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:03:36,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415059634] [2024-05-12 13:03:36,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:36,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:03:36,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:36,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:03:36,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:03:36,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2024-05-12 13:03:36,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 307 transitions, 2649 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:36,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:36,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2024-05-12 13:03:36,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:38,639 INFO L124 PetriNetUnfolderBase]: 6215/10304 cut-off events. [2024-05-12 13:03:38,639 INFO L125 PetriNetUnfolderBase]: For 784474/784534 co-relation queries the response was YES. [2024-05-12 13:03:38,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69625 conditions, 10304 events. 6215/10304 cut-off events. For 784474/784534 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 71468 event pairs, 1876 based on Foata normal form. 9/9984 useless extension candidates. Maximal degree in co-relation 69509. Up to 8528 conditions per place. [2024-05-12 13:03:38,761 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 249 selfloop transitions, 40 changer transitions 0/334 dead transitions. [2024-05-12 13:03:38,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 334 transitions, 3509 flow [2024-05-12 13:03:38,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:03:38,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:03:38,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-05-12 13:03:38,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5042016806722689 [2024-05-12 13:03:38,763 INFO L175 Difference]: Start difference. First operand has 246 places, 307 transitions, 2649 flow. Second operand 7 states and 180 transitions. [2024-05-12 13:03:38,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 334 transitions, 3509 flow [2024-05-12 13:03:39,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 334 transitions, 3453 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-05-12 13:03:39,545 INFO L231 Difference]: Finished difference. Result has 248 places, 310 transitions, 2741 flow [2024-05-12 13:03:39,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2593, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2741, PETRI_PLACES=248, PETRI_TRANSITIONS=310} [2024-05-12 13:03:39,545 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 191 predicate places. [2024-05-12 13:03:39,545 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 310 transitions, 2741 flow [2024-05-12 13:03:39,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:39,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:39,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:39,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-05-12 13:03:39,546 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:03:39,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:39,546 INFO L85 PathProgramCache]: Analyzing trace with hash 2138728888, now seen corresponding path program 4 times [2024-05-12 13:03:39,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:39,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030104291] [2024-05-12 13:03:39,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:39,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:40,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:03:40,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:40,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030104291] [2024-05-12 13:03:40,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030104291] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:40,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:40,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:03:40,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357463380] [2024-05-12 13:03:40,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:40,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:03:40,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:40,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:03:40,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:03:40,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2024-05-12 13:03:40,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 310 transitions, 2741 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:40,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:40,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2024-05-12 13:03:40,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:42,362 INFO L124 PetriNetUnfolderBase]: 6287/10252 cut-off events. [2024-05-12 13:03:42,362 INFO L125 PetriNetUnfolderBase]: For 807079/807139 co-relation queries the response was YES. [2024-05-12 13:03:42,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71356 conditions, 10252 events. 6287/10252 cut-off events. For 807079/807139 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 69764 event pairs, 1887 based on Foata normal form. 9/9976 useless extension candidates. Maximal degree in co-relation 71239. Up to 8665 conditions per place. [2024-05-12 13:03:42,510 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 273 selfloop transitions, 42 changer transitions 0/360 dead transitions. [2024-05-12 13:03:42,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 360 transitions, 3663 flow [2024-05-12 13:03:42,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:03:42,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:03:42,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-05-12 13:03:42,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171568627450981 [2024-05-12 13:03:42,511 INFO L175 Difference]: Start difference. First operand has 248 places, 310 transitions, 2741 flow. Second operand 8 states and 211 transitions. [2024-05-12 13:03:42,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 360 transitions, 3663 flow [2024-05-12 13:03:43,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 360 transitions, 3509 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-05-12 13:03:43,542 INFO L231 Difference]: Finished difference. Result has 252 places, 326 transitions, 2910 flow [2024-05-12 13:03:43,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2615, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2910, PETRI_PLACES=252, PETRI_TRANSITIONS=326} [2024-05-12 13:03:43,542 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 195 predicate places. [2024-05-12 13:03:43,543 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 326 transitions, 2910 flow [2024-05-12 13:03:43,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:43,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:43,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:43,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-05-12 13:03:43,543 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:03:43,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:43,544 INFO L85 PathProgramCache]: Analyzing trace with hash 2031102002, now seen corresponding path program 5 times [2024-05-12 13:03:43,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:43,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870365307] [2024-05-12 13:03:43,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:43,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:43,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:44,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:03:44,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:44,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870365307] [2024-05-12 13:03:44,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870365307] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:44,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:44,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:03:44,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247403671] [2024-05-12 13:03:44,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:44,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:03:44,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:44,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:03:44,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:03:44,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2024-05-12 13:03:44,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 326 transitions, 2910 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:44,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:44,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2024-05-12 13:03:44,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:46,466 INFO L124 PetriNetUnfolderBase]: 6377/10391 cut-off events. [2024-05-12 13:03:46,466 INFO L125 PetriNetUnfolderBase]: For 824413/824473 co-relation queries the response was YES. [2024-05-12 13:03:46,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72876 conditions, 10391 events. 6377/10391 cut-off events. For 824413/824473 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 70624 event pairs, 1887 based on Foata normal form. 9/10112 useless extension candidates. Maximal degree in co-relation 72757. Up to 8755 conditions per place. [2024-05-12 13:03:46,619 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 277 selfloop transitions, 65 changer transitions 0/387 dead transitions. [2024-05-12 13:03:46,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 387 transitions, 4074 flow [2024-05-12 13:03:46,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:03:46,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:03:46,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-05-12 13:03:46,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171568627450981 [2024-05-12 13:03:46,620 INFO L175 Difference]: Start difference. First operand has 252 places, 326 transitions, 2910 flow. Second operand 8 states and 211 transitions. [2024-05-12 13:03:46,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 387 transitions, 4074 flow [2024-05-12 13:03:47,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 387 transitions, 3857 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-05-12 13:03:47,705 INFO L231 Difference]: Finished difference. Result has 256 places, 355 transitions, 3285 flow [2024-05-12 13:03:47,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2765, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3285, PETRI_PLACES=256, PETRI_TRANSITIONS=355} [2024-05-12 13:03:47,706 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 199 predicate places. [2024-05-12 13:03:47,706 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 355 transitions, 3285 flow [2024-05-12 13:03:47,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:47,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:47,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:47,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-05-12 13:03:47,707 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:03:47,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:47,707 INFO L85 PathProgramCache]: Analyzing trace with hash 107816426, now seen corresponding path program 1 times [2024-05-12 13:03:47,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:47,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697712419] [2024-05-12 13:03:47,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:47,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:48,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:03:48,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:48,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697712419] [2024-05-12 13:03:48,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697712419] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:48,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:48,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:03:48,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344918302] [2024-05-12 13:03:48,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:48,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:03:48,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:48,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:03:48,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:03:48,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2024-05-12 13:03:48,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 355 transitions, 3285 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:48,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:48,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2024-05-12 13:03:48,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:50,878 INFO L124 PetriNetUnfolderBase]: 6400/10463 cut-off events. [2024-05-12 13:03:50,878 INFO L125 PetriNetUnfolderBase]: For 846895/846919 co-relation queries the response was YES. [2024-05-12 13:03:50,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73893 conditions, 10463 events. 6400/10463 cut-off events. For 846895/846919 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 71598 event pairs, 1829 based on Foata normal form. 2/10216 useless extension candidates. Maximal degree in co-relation 73772. Up to 8833 conditions per place. [2024-05-12 13:03:51,022 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 327 selfloop transitions, 18 changer transitions 0/388 dead transitions. [2024-05-12 13:03:51,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 388 transitions, 4167 flow [2024-05-12 13:03:51,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:03:51,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:03:51,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-05-12 13:03:51,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5042016806722689 [2024-05-12 13:03:51,024 INFO L175 Difference]: Start difference. First operand has 256 places, 355 transitions, 3285 flow. Second operand 7 states and 180 transitions. [2024-05-12 13:03:51,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 388 transitions, 4167 flow [2024-05-12 13:03:52,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 388 transitions, 4066 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-05-12 13:03:52,087 INFO L231 Difference]: Finished difference. Result has 259 places, 362 transitions, 3331 flow [2024-05-12 13:03:52,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3184, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3331, PETRI_PLACES=259, PETRI_TRANSITIONS=362} [2024-05-12 13:03:52,088 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 202 predicate places. [2024-05-12 13:03:52,088 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 362 transitions, 3331 flow [2024-05-12 13:03:52,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:52,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:52,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:52,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-05-12 13:03:52,089 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:03:52,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:52,089 INFO L85 PathProgramCache]: Analyzing trace with hash 107967334, now seen corresponding path program 1 times [2024-05-12 13:03:52,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:52,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429448195] [2024-05-12 13:03:52,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:52,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:53,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:03:53,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:53,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429448195] [2024-05-12 13:03:53,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429448195] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:53,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:53,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:03:53,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312931098] [2024-05-12 13:03:53,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:53,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:03:53,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:53,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:03:53,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:03:53,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2024-05-12 13:03:53,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 362 transitions, 3331 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:53,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:53,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2024-05-12 13:03:53,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:55,363 INFO L124 PetriNetUnfolderBase]: 6411/10479 cut-off events. [2024-05-12 13:03:55,363 INFO L125 PetriNetUnfolderBase]: For 873056/873080 co-relation queries the response was YES. [2024-05-12 13:03:55,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75282 conditions, 10479 events. 6411/10479 cut-off events. For 873056/873080 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 71708 event pairs, 1822 based on Foata normal form. 3/10233 useless extension candidates. Maximal degree in co-relation 75160. Up to 8848 conditions per place. [2024-05-12 13:03:55,511 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 330 selfloop transitions, 17 changer transitions 0/390 dead transitions. [2024-05-12 13:03:55,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 390 transitions, 4171 flow [2024-05-12 13:03:55,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:03:55,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:03:55,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-05-12 13:03:55,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49859943977591037 [2024-05-12 13:03:55,512 INFO L175 Difference]: Start difference. First operand has 259 places, 362 transitions, 3331 flow. Second operand 7 states and 178 transitions. [2024-05-12 13:03:55,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 390 transitions, 4171 flow [2024-05-12 13:03:56,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 390 transitions, 4090 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-05-12 13:03:56,479 INFO L231 Difference]: Finished difference. Result has 262 places, 365 transitions, 3336 flow [2024-05-12 13:03:56,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3250, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3336, PETRI_PLACES=262, PETRI_TRANSITIONS=365} [2024-05-12 13:03:56,479 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 205 predicate places. [2024-05-12 13:03:56,480 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 365 transitions, 3336 flow [2024-05-12 13:03:56,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:56,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:56,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:56,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-05-12 13:03:56,480 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:03:56,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:56,481 INFO L85 PathProgramCache]: Analyzing trace with hash 103719858, now seen corresponding path program 2 times [2024-05-12 13:03:56,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:56,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619852550] [2024-05-12 13:03:56,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:56,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:57,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:03:57,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:57,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619852550] [2024-05-12 13:03:57,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619852550] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:57,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:57,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:03:57,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469066359] [2024-05-12 13:03:57,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:57,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:03:57,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:57,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:03:57,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:03:57,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2024-05-12 13:03:57,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 365 transitions, 3336 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:57,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:57,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2024-05-12 13:03:57,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:59,741 INFO L124 PetriNetUnfolderBase]: 6445/10528 cut-off events. [2024-05-12 13:03:59,741 INFO L125 PetriNetUnfolderBase]: For 890603/890627 co-relation queries the response was YES. [2024-05-12 13:03:59,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76521 conditions, 10528 events. 6445/10528 cut-off events. For 890603/890627 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 71989 event pairs, 1823 based on Foata normal form. 2/10282 useless extension candidates. Maximal degree in co-relation 76398. Up to 8861 conditions per place. [2024-05-12 13:03:59,873 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 328 selfloop transitions, 23 changer transitions 0/394 dead transitions. [2024-05-12 13:03:59,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 394 transitions, 4218 flow [2024-05-12 13:03:59,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:03:59,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:03:59,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-05-12 13:03:59,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070028011204482 [2024-05-12 13:03:59,874 INFO L175 Difference]: Start difference. First operand has 262 places, 365 transitions, 3336 flow. Second operand 7 states and 181 transitions. [2024-05-12 13:03:59,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 394 transitions, 4218 flow [2024-05-12 13:04:00,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 394 transitions, 4156 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-05-12 13:04:00,857 INFO L231 Difference]: Finished difference. Result has 264 places, 368 transitions, 3390 flow [2024-05-12 13:04:00,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3274, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3390, PETRI_PLACES=264, PETRI_TRANSITIONS=368} [2024-05-12 13:04:00,857 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 207 predicate places. [2024-05-12 13:04:00,857 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 368 transitions, 3390 flow [2024-05-12 13:04:00,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:00,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:00,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:00,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-05-12 13:04:00,858 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:00,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:00,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1169957366, now seen corresponding path program 2 times [2024-05-12 13:04:00,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:00,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896189698] [2024-05-12 13:04:00,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:00,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:02,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:02,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:02,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896189698] [2024-05-12 13:04:02,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896189698] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:02,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:02,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:04:02,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167567449] [2024-05-12 13:04:02,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:02,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:04:02,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:02,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:04:02,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:04:02,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2024-05-12 13:04:02,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 368 transitions, 3390 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:02,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:02,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2024-05-12 13:04:02,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:04,768 INFO L124 PetriNetUnfolderBase]: 6511/10863 cut-off events. [2024-05-12 13:04:04,769 INFO L125 PetriNetUnfolderBase]: For 914872/914910 co-relation queries the response was YES. [2024-05-12 13:04:04,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78194 conditions, 10863 events. 6511/10863 cut-off events. For 914872/914910 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 76231 event pairs, 1833 based on Foata normal form. 8/10544 useless extension candidates. Maximal degree in co-relation 78070. Up to 8933 conditions per place. [2024-05-12 13:04:04,905 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 326 selfloop transitions, 31 changer transitions 0/400 dead transitions. [2024-05-12 13:04:04,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 400 transitions, 4474 flow [2024-05-12 13:04:04,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:04:04,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:04:04,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-05-12 13:04:04,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014005602240896 [2024-05-12 13:04:04,906 INFO L175 Difference]: Start difference. First operand has 264 places, 368 transitions, 3390 flow. Second operand 7 states and 179 transitions. [2024-05-12 13:04:04,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 400 transitions, 4474 flow [2024-05-12 13:04:05,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 400 transitions, 4380 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-05-12 13:04:05,970 INFO L231 Difference]: Finished difference. Result has 267 places, 376 transitions, 3494 flow [2024-05-12 13:04:05,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3296, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3494, PETRI_PLACES=267, PETRI_TRANSITIONS=376} [2024-05-12 13:04:05,971 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 210 predicate places. [2024-05-12 13:04:05,971 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 376 transitions, 3494 flow [2024-05-12 13:04:05,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:05,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:05,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:05,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-05-12 13:04:05,972 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:05,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:05,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1169660696, now seen corresponding path program 3 times [2024-05-12 13:04:05,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:05,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554860994] [2024-05-12 13:04:05,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:05,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:05,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:07,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:07,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:07,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554860994] [2024-05-12 13:04:07,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554860994] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:07,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:07,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:04:07,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937579671] [2024-05-12 13:04:07,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:07,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:04:07,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:07,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:04:07,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:04:07,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2024-05-12 13:04:07,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 376 transitions, 3494 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:07,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:07,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2024-05-12 13:04:07,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:09,703 INFO L124 PetriNetUnfolderBase]: 6496/10762 cut-off events. [2024-05-12 13:04:09,703 INFO L125 PetriNetUnfolderBase]: For 931320/931358 co-relation queries the response was YES. [2024-05-12 13:04:09,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78832 conditions, 10762 events. 6496/10762 cut-off events. For 931320/931358 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 75008 event pairs, 1821 based on Foata normal form. 8/10474 useless extension candidates. Maximal degree in co-relation 78706. Up to 8955 conditions per place. [2024-05-12 13:04:09,839 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 335 selfloop transitions, 22 changer transitions 0/400 dead transitions. [2024-05-12 13:04:09,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 400 transitions, 4321 flow [2024-05-12 13:04:09,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:04:09,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:04:09,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-05-12 13:04:09,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4957983193277311 [2024-05-12 13:04:09,841 INFO L175 Difference]: Start difference. First operand has 267 places, 376 transitions, 3494 flow. Second operand 7 states and 177 transitions. [2024-05-12 13:04:09,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 400 transitions, 4321 flow [2024-05-12 13:04:10,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 400 transitions, 4224 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-05-12 13:04:10,977 INFO L231 Difference]: Finished difference. Result has 271 places, 377 transitions, 3456 flow [2024-05-12 13:04:10,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3397, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3456, PETRI_PLACES=271, PETRI_TRANSITIONS=377} [2024-05-12 13:04:10,977 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 214 predicate places. [2024-05-12 13:04:10,977 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 377 transitions, 3456 flow [2024-05-12 13:04:10,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:10,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:10,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:10,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-05-12 13:04:10,978 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:10,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:10,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1169660448, now seen corresponding path program 3 times [2024-05-12 13:04:10,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:10,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322358684] [2024-05-12 13:04:10,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:10,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:12,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:12,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:12,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322358684] [2024-05-12 13:04:12,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322358684] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:12,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:12,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:04:12,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378102502] [2024-05-12 13:04:12,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:12,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:04:12,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:12,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:04:12,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:04:12,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2024-05-12 13:04:12,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 377 transitions, 3456 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:12,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:12,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2024-05-12 13:04:12,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:14,222 INFO L124 PetriNetUnfolderBase]: 6515/10795 cut-off events. [2024-05-12 13:04:14,222 INFO L125 PetriNetUnfolderBase]: For 948544/948582 co-relation queries the response was YES. [2024-05-12 13:04:14,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79159 conditions, 10795 events. 6515/10795 cut-off events. For 948544/948582 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 75353 event pairs, 1825 based on Foata normal form. 4/10503 useless extension candidates. Maximal degree in co-relation 79031. Up to 8915 conditions per place. [2024-05-12 13:04:14,396 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 332 selfloop transitions, 30 changer transitions 0/405 dead transitions. [2024-05-12 13:04:14,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 405 transitions, 4372 flow [2024-05-12 13:04:14,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:04:14,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:04:14,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-05-12 13:04:14,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070028011204482 [2024-05-12 13:04:14,397 INFO L175 Difference]: Start difference. First operand has 271 places, 377 transitions, 3456 flow. Second operand 7 states and 181 transitions. [2024-05-12 13:04:14,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 405 transitions, 4372 flow [2024-05-12 13:04:15,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 405 transitions, 4324 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-05-12 13:04:15,524 INFO L231 Difference]: Finished difference. Result has 273 places, 380 transitions, 3546 flow [2024-05-12 13:04:15,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3408, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3546, PETRI_PLACES=273, PETRI_TRANSITIONS=380} [2024-05-12 13:04:15,525 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 216 predicate places. [2024-05-12 13:04:15,525 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 380 transitions, 3546 flow [2024-05-12 13:04:15,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:15,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:15,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:15,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-05-12 13:04:15,525 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:15,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:15,525 INFO L85 PathProgramCache]: Analyzing trace with hash 315850916, now seen corresponding path program 1 times [2024-05-12 13:04:15,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:15,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128855445] [2024-05-12 13:04:15,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:15,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:17,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:17,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:17,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128855445] [2024-05-12 13:04:17,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128855445] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:17,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:17,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:04:17,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249501176] [2024-05-12 13:04:17,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:17,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:04:17,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:17,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:04:17,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:04:17,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 51 [2024-05-12 13:04:17,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 380 transitions, 3546 flow. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:17,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:17,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 51 [2024-05-12 13:04:17,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:19,187 INFO L124 PetriNetUnfolderBase]: 6187/10346 cut-off events. [2024-05-12 13:04:19,187 INFO L125 PetriNetUnfolderBase]: For 965213/965312 co-relation queries the response was YES. [2024-05-12 13:04:19,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77545 conditions, 10346 events. 6187/10346 cut-off events. For 965213/965312 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 72493 event pairs, 1855 based on Foata normal form. 17/9907 useless extension candidates. Maximal degree in co-relation 77416. Up to 8353 conditions per place. [2024-05-12 13:04:19,348 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 311 selfloop transitions, 18 changer transitions 0/406 dead transitions. [2024-05-12 13:04:19,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 406 transitions, 4372 flow [2024-05-12 13:04:19,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:04:19,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:04:19,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-05-12 13:04:19,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-05-12 13:04:19,349 INFO L175 Difference]: Start difference. First operand has 273 places, 380 transitions, 3546 flow. Second operand 7 states and 182 transitions. [2024-05-12 13:04:19,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 406 transitions, 4372 flow [2024-05-12 13:04:20,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 406 transitions, 4256 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-05-12 13:04:20,838 INFO L231 Difference]: Finished difference. Result has 275 places, 383 transitions, 3542 flow [2024-05-12 13:04:20,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3430, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3542, PETRI_PLACES=275, PETRI_TRANSITIONS=383} [2024-05-12 13:04:20,838 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 218 predicate places. [2024-05-12 13:04:20,839 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 383 transitions, 3542 flow [2024-05-12 13:04:20,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:20,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:20,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:20,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-05-12 13:04:20,839 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:20,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:20,839 INFO L85 PathProgramCache]: Analyzing trace with hash -439646967, now seen corresponding path program 1 times [2024-05-12 13:04:20,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:20,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45635363] [2024-05-12 13:04:20,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:20,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:22,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:22,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:22,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45635363] [2024-05-12 13:04:22,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45635363] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:22,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:22,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:04:22,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012754957] [2024-05-12 13:04:22,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:22,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:04:22,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:22,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:04:22,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:04:22,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:04:22,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 383 transitions, 3542 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:22,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:22,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:04:22,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:25,059 INFO L124 PetriNetUnfolderBase]: 7500/12048 cut-off events. [2024-05-12 13:04:25,059 INFO L125 PetriNetUnfolderBase]: For 1034805/1034809 co-relation queries the response was YES. [2024-05-12 13:04:25,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88462 conditions, 12048 events. 7500/12048 cut-off events. For 1034805/1034809 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 80875 event pairs, 1715 based on Foata normal form. 8/11792 useless extension candidates. Maximal degree in co-relation 88332. Up to 10292 conditions per place. [2024-05-12 13:04:25,240 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 392 selfloop transitions, 62 changer transitions 0/464 dead transitions. [2024-05-12 13:04:25,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 464 transitions, 5184 flow [2024-05-12 13:04:25,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:04:25,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:04:25,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 285 transitions. [2024-05-12 13:04:25,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5080213903743316 [2024-05-12 13:04:25,241 INFO L175 Difference]: Start difference. First operand has 275 places, 383 transitions, 3542 flow. Second operand 11 states and 285 transitions. [2024-05-12 13:04:25,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 464 transitions, 5184 flow [2024-05-12 13:04:26,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 464 transitions, 5076 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-05-12 13:04:26,356 INFO L231 Difference]: Finished difference. Result has 280 places, 387 transitions, 3709 flow [2024-05-12 13:04:26,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3434, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3709, PETRI_PLACES=280, PETRI_TRANSITIONS=387} [2024-05-12 13:04:26,357 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 223 predicate places. [2024-05-12 13:04:26,357 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 387 transitions, 3709 flow [2024-05-12 13:04:26,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:26,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:26,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:26,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-05-12 13:04:26,357 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:26,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:26,358 INFO L85 PathProgramCache]: Analyzing trace with hash -439528857, now seen corresponding path program 2 times [2024-05-12 13:04:26,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:26,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023638031] [2024-05-12 13:04:26,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:26,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:27,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:27,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:27,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023638031] [2024-05-12 13:04:27,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023638031] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:27,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:27,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:04:27,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327324914] [2024-05-12 13:04:27,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:27,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:04:27,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:27,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:04:27,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:04:27,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:04:27,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 387 transitions, 3709 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:27,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:27,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:04:27,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:30,603 INFO L124 PetriNetUnfolderBase]: 7492/11850 cut-off events. [2024-05-12 13:04:30,603 INFO L125 PetriNetUnfolderBase]: For 1045596/1045600 co-relation queries the response was YES. [2024-05-12 13:04:30,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88642 conditions, 11850 events. 7492/11850 cut-off events. For 1045596/1045600 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 78431 event pairs, 2036 based on Foata normal form. 8/11637 useless extension candidates. Maximal degree in co-relation 88512. Up to 10375 conditions per place. [2024-05-12 13:04:30,781 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 385 selfloop transitions, 58 changer transitions 0/453 dead transitions. [2024-05-12 13:04:30,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 453 transitions, 4859 flow [2024-05-12 13:04:30,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:04:30,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:04:30,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 258 transitions. [2024-05-12 13:04:30,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058823529411764 [2024-05-12 13:04:30,782 INFO L175 Difference]: Start difference. First operand has 280 places, 387 transitions, 3709 flow. Second operand 10 states and 258 transitions. [2024-05-12 13:04:30,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 453 transitions, 4859 flow [2024-05-12 13:04:31,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 453 transitions, 4653 flow, removed 65 selfloop flow, removed 7 redundant places. [2024-05-12 13:04:31,791 INFO L231 Difference]: Finished difference. Result has 283 places, 387 transitions, 3626 flow [2024-05-12 13:04:31,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3503, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3626, PETRI_PLACES=283, PETRI_TRANSITIONS=387} [2024-05-12 13:04:31,791 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 226 predicate places. [2024-05-12 13:04:31,791 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 387 transitions, 3626 flow [2024-05-12 13:04:31,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:31,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:31,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:31,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-05-12 13:04:31,792 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:31,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:31,793 INFO L85 PathProgramCache]: Analyzing trace with hash -435060207, now seen corresponding path program 3 times [2024-05-12 13:04:31,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:31,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754356666] [2024-05-12 13:04:31,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:31,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:33,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:33,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:33,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754356666] [2024-05-12 13:04:33,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754356666] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:33,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:33,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:04:33,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27605881] [2024-05-12 13:04:33,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:33,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:04:33,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:33,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:04:33,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:04:33,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:04:33,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 387 transitions, 3626 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:33,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:33,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:04:33,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:36,062 INFO L124 PetriNetUnfolderBase]: 7529/11889 cut-off events. [2024-05-12 13:04:36,062 INFO L125 PetriNetUnfolderBase]: For 1069202/1069212 co-relation queries the response was YES. [2024-05-12 13:04:36,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88856 conditions, 11889 events. 7529/11889 cut-off events. For 1069202/1069212 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 78577 event pairs, 1992 based on Foata normal form. 14/11688 useless extension candidates. Maximal degree in co-relation 88724. Up to 10149 conditions per place. [2024-05-12 13:04:36,237 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 359 selfloop transitions, 85 changer transitions 0/454 dead transitions. [2024-05-12 13:04:36,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 454 transitions, 4870 flow [2024-05-12 13:04:36,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:04:36,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:04:36,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 261 transitions. [2024-05-12 13:04:36,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117647058823529 [2024-05-12 13:04:36,239 INFO L175 Difference]: Start difference. First operand has 283 places, 387 transitions, 3626 flow. Second operand 10 states and 261 transitions. [2024-05-12 13:04:36,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 454 transitions, 4870 flow [2024-05-12 13:04:37,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 454 transitions, 4749 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-05-12 13:04:37,586 INFO L231 Difference]: Finished difference. Result has 284 places, 389 transitions, 3760 flow [2024-05-12 13:04:37,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3505, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3760, PETRI_PLACES=284, PETRI_TRANSITIONS=389} [2024-05-12 13:04:37,586 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 227 predicate places. [2024-05-12 13:04:37,586 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 389 transitions, 3760 flow [2024-05-12 13:04:37,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:37,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:37,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:37,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-05-12 13:04:37,587 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:37,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:37,587 INFO L85 PathProgramCache]: Analyzing trace with hash -269421073, now seen corresponding path program 4 times [2024-05-12 13:04:37,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:37,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197963552] [2024-05-12 13:04:37,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:37,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:38,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:38,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:38,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197963552] [2024-05-12 13:04:38,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197963552] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:38,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:38,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:04:38,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905160641] [2024-05-12 13:04:38,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:38,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:04:38,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:38,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:04:38,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:04:39,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:04:39,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 389 transitions, 3760 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:39,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:39,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:04:39,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:42,006 INFO L124 PetriNetUnfolderBase]: 7566/11946 cut-off events. [2024-05-12 13:04:42,006 INFO L125 PetriNetUnfolderBase]: For 1102018/1102028 co-relation queries the response was YES. [2024-05-12 13:04:42,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90428 conditions, 11946 events. 7566/11946 cut-off events. For 1102018/1102028 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 78965 event pairs, 1992 based on Foata normal form. 14/11745 useless extension candidates. Maximal degree in co-relation 90295. Up to 10204 conditions per place. [2024-05-12 13:04:42,180 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 362 selfloop transitions, 82 changer transitions 0/454 dead transitions. [2024-05-12 13:04:42,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 454 transitions, 5002 flow [2024-05-12 13:04:42,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:04:42,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:04:42,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-05-12 13:04:42,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078431372549019 [2024-05-12 13:04:42,182 INFO L175 Difference]: Start difference. First operand has 284 places, 389 transitions, 3760 flow. Second operand 10 states and 259 transitions. [2024-05-12 13:04:42,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 454 transitions, 5002 flow [2024-05-12 13:04:43,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 454 transitions, 4765 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-05-12 13:04:43,438 INFO L231 Difference]: Finished difference. Result has 286 places, 391 transitions, 3776 flow [2024-05-12 13:04:43,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3523, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3776, PETRI_PLACES=286, PETRI_TRANSITIONS=391} [2024-05-12 13:04:43,438 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 229 predicate places. [2024-05-12 13:04:43,438 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 391 transitions, 3776 flow [2024-05-12 13:04:43,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:43,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:43,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:43,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-05-12 13:04:43,439 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:43,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:43,439 INFO L85 PathProgramCache]: Analyzing trace with hash -262740945, now seen corresponding path program 1 times [2024-05-12 13:04:43,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:43,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823309119] [2024-05-12 13:04:43,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:43,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:44,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:44,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:44,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823309119] [2024-05-12 13:04:44,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823309119] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:44,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:44,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:04:44,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477054163] [2024-05-12 13:04:44,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:44,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:04:44,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:44,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:04:44,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:04:44,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:04:44,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 391 transitions, 3776 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:44,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:44,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:04:44,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:47,779 INFO L124 PetriNetUnfolderBase]: 7603/12013 cut-off events. [2024-05-12 13:04:47,779 INFO L125 PetriNetUnfolderBase]: For 1131240/1131250 co-relation queries the response was YES. [2024-05-12 13:04:47,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91211 conditions, 12013 events. 7603/12013 cut-off events. For 1131240/1131250 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 79509 event pairs, 1867 based on Foata normal form. 10/11804 useless extension candidates. Maximal degree in co-relation 91077. Up to 10098 conditions per place. [2024-05-12 13:04:47,958 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 346 selfloop transitions, 104 changer transitions 0/460 dead transitions. [2024-05-12 13:04:47,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 460 transitions, 5064 flow [2024-05-12 13:04:47,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:04:47,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:04:47,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 261 transitions. [2024-05-12 13:04:47,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117647058823529 [2024-05-12 13:04:47,959 INFO L175 Difference]: Start difference. First operand has 286 places, 391 transitions, 3776 flow. Second operand 10 states and 261 transitions. [2024-05-12 13:04:47,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 460 transitions, 5064 flow [2024-05-12 13:04:49,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 460 transitions, 4829 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-05-12 13:04:49,701 INFO L231 Difference]: Finished difference. Result has 289 places, 396 transitions, 3858 flow [2024-05-12 13:04:49,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3541, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3858, PETRI_PLACES=289, PETRI_TRANSITIONS=396} [2024-05-12 13:04:49,702 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 232 predicate places. [2024-05-12 13:04:49,702 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 396 transitions, 3858 flow [2024-05-12 13:04:49,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:49,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:49,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:49,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-05-12 13:04:49,702 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:49,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:49,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1208593775, now seen corresponding path program 1 times [2024-05-12 13:04:49,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:49,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816417078] [2024-05-12 13:04:49,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:49,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:50,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:50,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:50,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816417078] [2024-05-12 13:04:50,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816417078] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:50,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:50,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:04:50,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625946465] [2024-05-12 13:04:50,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:50,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:04:50,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:50,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:04:50,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:04:50,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-05-12 13:04:50,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 396 transitions, 3858 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:50,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:50,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-05-12 13:04:50,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:53,255 INFO L124 PetriNetUnfolderBase]: 7228/11536 cut-off events. [2024-05-12 13:04:53,255 INFO L125 PetriNetUnfolderBase]: For 1140504/1140514 co-relation queries the response was YES. [2024-05-12 13:04:53,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89161 conditions, 11536 events. 7228/11536 cut-off events. For 1140504/1140514 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 77667 event pairs, 1958 based on Foata normal form. 11/11310 useless extension candidates. Maximal degree in co-relation 89025. Up to 10027 conditions per place. [2024-05-12 13:04:53,427 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 360 selfloop transitions, 34 changer transitions 0/434 dead transitions. [2024-05-12 13:04:53,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 434 transitions, 4928 flow [2024-05-12 13:04:53,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:04:53,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:04:53,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-05-12 13:04:53,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49859943977591037 [2024-05-12 13:04:53,428 INFO L175 Difference]: Start difference. First operand has 289 places, 396 transitions, 3858 flow. Second operand 7 states and 178 transitions. [2024-05-12 13:04:53,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 434 transitions, 4928 flow [2024-05-12 13:04:54,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 434 transitions, 4645 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-05-12 13:04:54,955 INFO L231 Difference]: Finished difference. Result has 291 places, 407 transitions, 3876 flow [2024-05-12 13:04:54,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3583, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3876, PETRI_PLACES=291, PETRI_TRANSITIONS=407} [2024-05-12 13:04:54,956 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 234 predicate places. [2024-05-12 13:04:54,956 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 407 transitions, 3876 flow [2024-05-12 13:04:54,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:54,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:54,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:54,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-05-12 13:04:54,956 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:54,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:54,957 INFO L85 PathProgramCache]: Analyzing trace with hash 2087643877, now seen corresponding path program 2 times [2024-05-12 13:04:54,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:54,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657957568] [2024-05-12 13:04:54,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:54,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:56,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:56,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:56,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657957568] [2024-05-12 13:04:56,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657957568] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:56,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:56,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:04:56,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792695364] [2024-05-12 13:04:56,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:56,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:04:56,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:56,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:04:56,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:04:56,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-05-12 13:04:56,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 407 transitions, 3876 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:56,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:56,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-05-12 13:04:56,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:58,651 INFO L124 PetriNetUnfolderBase]: 7266/11588 cut-off events. [2024-05-12 13:04:58,651 INFO L125 PetriNetUnfolderBase]: For 1174427/1174439 co-relation queries the response was YES. [2024-05-12 13:04:58,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90970 conditions, 11588 events. 7266/11588 cut-off events. For 1174427/1174439 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 77761 event pairs, 1936 based on Foata normal form. 13/11373 useless extension candidates. Maximal degree in co-relation 90831. Up to 10040 conditions per place. [2024-05-12 13:04:58,824 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 360 selfloop transitions, 40 changer transitions 0/440 dead transitions. [2024-05-12 13:04:58,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 440 transitions, 5138 flow [2024-05-12 13:04:58,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:04:58,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:04:58,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-05-12 13:04:58,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49859943977591037 [2024-05-12 13:04:58,825 INFO L175 Difference]: Start difference. First operand has 291 places, 407 transitions, 3876 flow. Second operand 7 states and 178 transitions. [2024-05-12 13:04:58,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 440 transitions, 5138 flow [2024-05-12 13:05:00,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 440 transitions, 5009 flow, removed 46 selfloop flow, removed 3 redundant places. [2024-05-12 13:05:00,206 INFO L231 Difference]: Finished difference. Result has 295 places, 413 transitions, 4007 flow [2024-05-12 13:05:00,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3747, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4007, PETRI_PLACES=295, PETRI_TRANSITIONS=413} [2024-05-12 13:05:00,207 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 238 predicate places. [2024-05-12 13:05:00,207 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 413 transitions, 4007 flow [2024-05-12 13:05:00,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:00,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:00,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:05:00,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-05-12 13:05:00,207 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:05:00,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:00,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1723336179, now seen corresponding path program 5 times [2024-05-12 13:05:00,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:00,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771682559] [2024-05-12 13:05:00,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:00,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:01,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:05:01,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:01,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771682559] [2024-05-12 13:05:01,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771682559] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:01,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:01,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:05:01,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581620149] [2024-05-12 13:05:01,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:01,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:05:01,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:01,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:05:01,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:05:01,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:05:01,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 413 transitions, 4007 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:01,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:01,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:05:01,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:04,568 INFO L124 PetriNetUnfolderBase]: 7694/12162 cut-off events. [2024-05-12 13:05:04,568 INFO L125 PetriNetUnfolderBase]: For 1223076/1223082 co-relation queries the response was YES. [2024-05-12 13:05:04,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95884 conditions, 12162 events. 7694/12162 cut-off events. For 1223076/1223082 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 80716 event pairs, 1934 based on Foata normal form. 10/11946 useless extension candidates. Maximal degree in co-relation 95744. Up to 10387 conditions per place. [2024-05-12 13:05:04,776 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 381 selfloop transitions, 85 changer transitions 0/476 dead transitions. [2024-05-12 13:05:04,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 476 transitions, 5321 flow [2024-05-12 13:05:04,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:05:04,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:05:04,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2024-05-12 13:05:04,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503921568627451 [2024-05-12 13:05:04,778 INFO L175 Difference]: Start difference. First operand has 295 places, 413 transitions, 4007 flow. Second operand 10 states and 257 transitions. [2024-05-12 13:05:04,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 476 transitions, 5321 flow [2024-05-12 13:05:06,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 476 transitions, 5195 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-05-12 13:05:06,264 INFO L231 Difference]: Finished difference. Result has 302 places, 415 transitions, 4150 flow [2024-05-12 13:05:06,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3881, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4150, PETRI_PLACES=302, PETRI_TRANSITIONS=415} [2024-05-12 13:05:06,265 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 245 predicate places. [2024-05-12 13:05:06,265 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 415 transitions, 4150 flow [2024-05-12 13:05:06,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:06,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:06,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:05:06,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-05-12 13:05:06,265 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:05:06,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:06,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1782036159, now seen corresponding path program 2 times [2024-05-12 13:05:06,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:06,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464670144] [2024-05-12 13:05:06,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:06,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:08,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:05:08,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:08,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464670144] [2024-05-12 13:05:08,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464670144] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:08,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:08,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:05:08,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431091730] [2024-05-12 13:05:08,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:08,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:05:08,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:08,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:05:08,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:05:08,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:05:08,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 415 transitions, 4150 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:08,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:08,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:05:08,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:11,187 INFO L124 PetriNetUnfolderBase]: 7754/12247 cut-off events. [2024-05-12 13:05:11,188 INFO L125 PetriNetUnfolderBase]: For 1257258/1257264 co-relation queries the response was YES. [2024-05-12 13:05:11,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97558 conditions, 12247 events. 7754/12247 cut-off events. For 1257258/1257264 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 81265 event pairs, 1890 based on Foata normal form. 6/12027 useless extension candidates. Maximal degree in co-relation 97416. Up to 10305 conditions per place. [2024-05-12 13:05:11,404 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 370 selfloop transitions, 104 changer transitions 0/484 dead transitions. [2024-05-12 13:05:11,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 484 transitions, 5537 flow [2024-05-12 13:05:11,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:05:11,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:05:11,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 260 transitions. [2024-05-12 13:05:11,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-05-12 13:05:11,405 INFO L175 Difference]: Start difference. First operand has 302 places, 415 transitions, 4150 flow. Second operand 10 states and 260 transitions. [2024-05-12 13:05:11,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 484 transitions, 5537 flow [2024-05-12 13:05:13,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 484 transitions, 5286 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-05-12 13:05:13,559 INFO L231 Difference]: Finished difference. Result has 305 places, 421 transitions, 4233 flow [2024-05-12 13:05:13,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3899, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4233, PETRI_PLACES=305, PETRI_TRANSITIONS=421} [2024-05-12 13:05:13,560 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 248 predicate places. [2024-05-12 13:05:13,560 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 421 transitions, 4233 flow [2024-05-12 13:05:13,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:13,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:13,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:05:13,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-05-12 13:05:13,561 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:05:13,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:13,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1131327097, now seen corresponding path program 3 times [2024-05-12 13:05:13,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:13,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679544100] [2024-05-12 13:05:13,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:13,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:14,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:05:14,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:14,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679544100] [2024-05-12 13:05:14,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679544100] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:14,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:14,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:05:14,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883274891] [2024-05-12 13:05:14,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:14,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:05:14,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:14,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:05:14,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:05:15,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:05:15,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 421 transitions, 4233 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:15,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:15,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:05:15,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:18,174 INFO L124 PetriNetUnfolderBase]: 7791/12323 cut-off events. [2024-05-12 13:05:18,174 INFO L125 PetriNetUnfolderBase]: For 1288102/1288108 co-relation queries the response was YES. [2024-05-12 13:05:18,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99147 conditions, 12323 events. 7791/12323 cut-off events. For 1288102/1288108 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 81985 event pairs, 1887 based on Foata normal form. 6/12097 useless extension candidates. Maximal degree in co-relation 99003. Up to 10360 conditions per place. [2024-05-12 13:05:18,377 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 373 selfloop transitions, 105 changer transitions 0/488 dead transitions. [2024-05-12 13:05:18,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 488 transitions, 5621 flow [2024-05-12 13:05:18,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:05:18,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:05:18,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 261 transitions. [2024-05-12 13:05:18,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117647058823529 [2024-05-12 13:05:18,378 INFO L175 Difference]: Start difference. First operand has 305 places, 421 transitions, 4233 flow. Second operand 10 states and 261 transitions. [2024-05-12 13:05:18,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 488 transitions, 5621 flow [2024-05-12 13:05:20,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 488 transitions, 5334 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-05-12 13:05:20,105 INFO L231 Difference]: Finished difference. Result has 309 places, 426 transitions, 4283 flow [2024-05-12 13:05:20,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3950, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4283, PETRI_PLACES=309, PETRI_TRANSITIONS=426} [2024-05-12 13:05:20,106 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 252 predicate places. [2024-05-12 13:05:20,106 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 426 transitions, 4283 flow [2024-05-12 13:05:20,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:20,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:20,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:05:20,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-05-12 13:05:20,107 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:05:20,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:20,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1773992589, now seen corresponding path program 4 times [2024-05-12 13:05:20,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:20,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038776411] [2024-05-12 13:05:20,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:20,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:21,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:05:21,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:21,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038776411] [2024-05-12 13:05:21,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038776411] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:21,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:21,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:05:21,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27974623] [2024-05-12 13:05:21,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:21,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:05:21,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:21,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:05:21,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:05:21,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:05:21,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 426 transitions, 4283 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:21,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:21,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:05:21,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:25,651 INFO L124 PetriNetUnfolderBase]: 7828/12382 cut-off events. [2024-05-12 13:05:25,651 INFO L125 PetriNetUnfolderBase]: For 1321323/1321329 co-relation queries the response was YES. [2024-05-12 13:05:25,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100605 conditions, 12382 events. 7828/12382 cut-off events. For 1321323/1321329 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 82388 event pairs, 1916 based on Foata normal form. 6/12158 useless extension candidates. Maximal degree in co-relation 100459. Up to 10415 conditions per place. [2024-05-12 13:05:26,116 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 372 selfloop transitions, 110 changer transitions 0/492 dead transitions. [2024-05-12 13:05:26,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 492 transitions, 5673 flow [2024-05-12 13:05:26,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:05:26,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:05:26,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-05-12 13:05:26,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078431372549019 [2024-05-12 13:05:26,117 INFO L175 Difference]: Start difference. First operand has 309 places, 426 transitions, 4283 flow. Second operand 10 states and 259 transitions. [2024-05-12 13:05:26,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 492 transitions, 5673 flow [2024-05-12 13:05:28,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 492 transitions, 5378 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-05-12 13:05:28,156 INFO L231 Difference]: Finished difference. Result has 312 places, 430 transitions, 4321 flow [2024-05-12 13:05:28,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3992, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4321, PETRI_PLACES=312, PETRI_TRANSITIONS=430} [2024-05-12 13:05:28,157 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 255 predicate places. [2024-05-12 13:05:28,157 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 430 transitions, 4321 flow [2024-05-12 13:05:28,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:28,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:28,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:05:28,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-05-12 13:05:28,158 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:05:28,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:28,158 INFO L85 PathProgramCache]: Analyzing trace with hash 737463241, now seen corresponding path program 5 times [2024-05-12 13:05:28,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:28,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219472392] [2024-05-12 13:05:28,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:28,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:30,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:05:30,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:30,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219472392] [2024-05-12 13:05:30,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219472392] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:30,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:30,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:05:30,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021397341] [2024-05-12 13:05:30,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:30,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:05:30,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:30,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:05:30,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:05:30,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-05-12 13:05:30,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 430 transitions, 4321 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:30,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:30,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-05-12 13:05:30,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:34,017 INFO L124 PetriNetUnfolderBase]: 8336/13251 cut-off events. [2024-05-12 13:05:34,017 INFO L125 PetriNetUnfolderBase]: For 1360438/1360444 co-relation queries the response was YES. [2024-05-12 13:05:34,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105624 conditions, 13251 events. 8336/13251 cut-off events. For 1360438/1360444 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 89332 event pairs, 1948 based on Foata normal form. 6/12989 useless extension candidates. Maximal degree in co-relation 105477. Up to 10770 conditions per place. [2024-05-12 13:05:34,238 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 394 selfloop transitions, 147 changer transitions 0/551 dead transitions. [2024-05-12 13:05:34,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 551 transitions, 6442 flow [2024-05-12 13:05:34,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:05:34,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:05:34,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 276 transitions. [2024-05-12 13:05:34,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4919786096256685 [2024-05-12 13:05:34,240 INFO L175 Difference]: Start difference. First operand has 312 places, 430 transitions, 4321 flow. Second operand 11 states and 276 transitions. [2024-05-12 13:05:34,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 551 transitions, 6442 flow [2024-05-12 13:05:36,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 551 transitions, 6024 flow, removed 78 selfloop flow, removed 6 redundant places. [2024-05-12 13:05:36,532 INFO L231 Difference]: Finished difference. Result has 321 places, 482 transitions, 4997 flow [2024-05-12 13:05:36,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=4045, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4997, PETRI_PLACES=321, PETRI_TRANSITIONS=482} [2024-05-12 13:05:36,533 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 264 predicate places. [2024-05-12 13:05:36,533 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 482 transitions, 4997 flow [2024-05-12 13:05:36,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:36,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:36,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:05:36,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-05-12 13:05:36,534 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:05:36,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:36,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1118791671, now seen corresponding path program 1 times [2024-05-12 13:05:36,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:36,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751003577] [2024-05-12 13:05:36,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:36,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:37,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:05:37,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:37,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751003577] [2024-05-12 13:05:37,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751003577] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:37,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:37,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:05:37,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007153000] [2024-05-12 13:05:37,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:37,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:05:37,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:37,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:05:37,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:05:37,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2024-05-12 13:05:37,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 482 transitions, 4997 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:37,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:37,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2024-05-12 13:05:37,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:41,112 INFO L124 PetriNetUnfolderBase]: 7472/12126 cut-off events. [2024-05-12 13:05:41,112 INFO L125 PetriNetUnfolderBase]: For 1354944/1354992 co-relation queries the response was YES. [2024-05-12 13:05:41,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99621 conditions, 12126 events. 7472/12126 cut-off events. For 1354944/1354992 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 83934 event pairs, 1882 based on Foata normal form. 32/11831 useless extension candidates. Maximal degree in co-relation 99469. Up to 10116 conditions per place. [2024-05-12 13:05:41,307 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 408 selfloop transitions, 58 changer transitions 0/529 dead transitions. [2024-05-12 13:05:41,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 529 transitions, 6202 flow [2024-05-12 13:05:41,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:05:41,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:05:41,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-05-12 13:05:41,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5220588235294118 [2024-05-12 13:05:41,308 INFO L175 Difference]: Start difference. First operand has 321 places, 482 transitions, 4997 flow. Second operand 8 states and 213 transitions. [2024-05-12 13:05:41,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 529 transitions, 6202 flow [2024-05-12 13:05:44,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 529 transitions, 5999 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-05-12 13:05:44,069 INFO L231 Difference]: Finished difference. Result has 327 places, 491 transitions, 5076 flow [2024-05-12 13:05:44,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=4794, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5076, PETRI_PLACES=327, PETRI_TRANSITIONS=491} [2024-05-12 13:05:44,069 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 270 predicate places. [2024-05-12 13:05:44,069 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 491 transitions, 5076 flow [2024-05-12 13:05:44,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:44,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:44,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:05:44,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-05-12 13:05:44,070 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:05:44,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:44,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1118432226, now seen corresponding path program 1 times [2024-05-12 13:05:44,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:44,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378144473] [2024-05-12 13:05:44,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:44,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:45,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:05:45,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:45,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378144473] [2024-05-12 13:05:45,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378144473] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:45,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:45,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:05:45,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51595627] [2024-05-12 13:05:45,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:45,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:05:45,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:45,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:05:45,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:05:45,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2024-05-12 13:05:45,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 491 transitions, 5076 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:45,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:45,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2024-05-12 13:05:45,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:49,033 INFO L124 PetriNetUnfolderBase]: 7489/12144 cut-off events. [2024-05-12 13:05:49,033 INFO L125 PetriNetUnfolderBase]: For 1377634/1377686 co-relation queries the response was YES. [2024-05-12 13:05:49,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100231 conditions, 12144 events. 7489/12144 cut-off events. For 1377634/1377686 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 83905 event pairs, 1882 based on Foata normal form. 31/11849 useless extension candidates. Maximal degree in co-relation 100077. Up to 10105 conditions per place. [2024-05-12 13:05:49,220 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 392 selfloop transitions, 73 changer transitions 0/528 dead transitions. [2024-05-12 13:05:49,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 528 transitions, 6218 flow [2024-05-12 13:05:49,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:05:49,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:05:49,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-05-12 13:05:49,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-05-12 13:05:49,221 INFO L175 Difference]: Start difference. First operand has 327 places, 491 transitions, 5076 flow. Second operand 8 states and 208 transitions. [2024-05-12 13:05:49,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 528 transitions, 6218 flow [2024-05-12 13:05:52,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 528 transitions, 6039 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-05-12 13:05:52,057 INFO L231 Difference]: Finished difference. Result has 330 places, 494 transitions, 5125 flow [2024-05-12 13:05:52,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=4897, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5125, PETRI_PLACES=330, PETRI_TRANSITIONS=494} [2024-05-12 13:05:52,057 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 273 predicate places. [2024-05-12 13:05:52,057 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 494 transitions, 5125 flow [2024-05-12 13:05:52,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:52,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:52,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:05:52,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-05-12 13:05:52,058 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:05:52,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:52,058 INFO L85 PathProgramCache]: Analyzing trace with hash 300826549, now seen corresponding path program 2 times [2024-05-12 13:05:52,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:52,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52535333] [2024-05-12 13:05:52,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:52,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:53,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:05:53,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:53,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52535333] [2024-05-12 13:05:53,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52535333] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:53,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:53,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:05:53,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277763677] [2024-05-12 13:05:53,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:53,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:05:53,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:53,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:05:53,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:05:53,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2024-05-12 13:05:53,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 494 transitions, 5125 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:53,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:53,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2024-05-12 13:05:53,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:56,815 INFO L124 PetriNetUnfolderBase]: 7506/12184 cut-off events. [2024-05-12 13:05:56,815 INFO L125 PetriNetUnfolderBase]: For 1407647/1407699 co-relation queries the response was YES. [2024-05-12 13:05:56,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101385 conditions, 12184 events. 7506/12184 cut-off events. For 1407647/1407699 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 84311 event pairs, 1880 based on Foata normal form. 33/11889 useless extension candidates. Maximal degree in co-relation 101230. Up to 10058 conditions per place. [2024-05-12 13:05:57,015 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 395 selfloop transitions, 74 changer transitions 0/532 dead transitions. [2024-05-12 13:05:57,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 532 transitions, 6295 flow [2024-05-12 13:05:57,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:05:57,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:05:57,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-05-12 13:05:57,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5147058823529411 [2024-05-12 13:05:57,016 INFO L175 Difference]: Start difference. First operand has 330 places, 494 transitions, 5125 flow. Second operand 8 states and 210 transitions. [2024-05-12 13:05:57,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 532 transitions, 6295 flow [2024-05-12 13:05:59,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 532 transitions, 6101 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-05-12 13:05:59,910 INFO L231 Difference]: Finished difference. Result has 332 places, 497 transitions, 5177 flow [2024-05-12 13:05:59,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=4931, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5177, PETRI_PLACES=332, PETRI_TRANSITIONS=497} [2024-05-12 13:05:59,910 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 275 predicate places. [2024-05-12 13:05:59,911 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 497 transitions, 5177 flow [2024-05-12 13:05:59,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:59,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:59,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:05:59,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-05-12 13:05:59,911 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:05:59,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:59,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1106365879, now seen corresponding path program 1 times [2024-05-12 13:05:59,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:59,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743715414] [2024-05-12 13:05:59,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:59,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:06:01,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:06:01,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:06:01,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743715414] [2024-05-12 13:06:01,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743715414] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:06:01,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:06:01,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:06:01,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652822489] [2024-05-12 13:06:01,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:06:01,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:06:01,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:06:01,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:06:01,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:06:01,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 51 [2024-05-12 13:06:01,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 497 transitions, 5177 flow. Second operand has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:06:01,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:06:01,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 51 [2024-05-12 13:06:01,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand