./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe031_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe031_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe031_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe031_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 00:37:56,956 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 00:37:57,012 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 00:37:57,015 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 00:37:57,015 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 00:37:57,029 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 00:37:57,029 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 00:37:57,029 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 00:37:57,030 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 00:37:57,030 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 00:37:57,030 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 00:37:57,031 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 00:37:57,031 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 00:37:57,031 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 00:37:57,032 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 00:37:57,032 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 00:37:57,032 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 00:37:57,033 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 00:37:57,033 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 00:37:57,033 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 00:37:57,033 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 00:37:57,034 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 00:37:57,034 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 00:37:57,034 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 00:37:57,035 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 00:37:57,035 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 00:37:57,035 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 00:37:57,035 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 00:37:57,036 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 00:37:57,036 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 00:37:57,036 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 00:37:57,036 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 00:37:57,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:37:57,037 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 00:37:57,037 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 00:37:57,037 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 00:37:57,038 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 00:37:57,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 00:37:57,038 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 00:37:57,038 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 00:37:57,038 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 00:37:57,040 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 00:37:57,041 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 00:37:57,041 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 00:37:57,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 00:37:57,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 00:37:57,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 00:37:57,249 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 00:37:57,250 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 00:37:57,251 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe031_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-28 00:37:57,369 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 00:37:57,369 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 00:37:57,371 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 00:37:58,409 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 00:37:58,611 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 00:37:58,612 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 00:37:58,622 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c7296a6d/141b43a1267c4a49ad98f1a65ed1efde/FLAG81df4fc14 [2024-06-28 00:37:58,632 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c7296a6d/141b43a1267c4a49ad98f1a65ed1efde [2024-06-28 00:37:58,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 00:37:58,634 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 00:37:58,635 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 00:37:58,635 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 00:37:58,639 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 00:37:58,640 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:37:57" (1/2) ... [2024-06-28 00:37:58,640 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@174adc5d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:37:58, skipping insertion in model container [2024-06-28 00:37:58,640 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:37:57" (1/2) ... [2024-06-28 00:37:58,641 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@163be43c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:37:58, skipping insertion in model container [2024-06-28 00:37:58,642 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:37:58" (2/2) ... [2024-06-28 00:37:58,642 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@174adc5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:37:58, skipping insertion in model container [2024-06-28 00:37:58,642 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:37:58" (2/2) ... [2024-06-28 00:37:58,642 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 00:37:58,660 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 00:37:58,661 INFO L97 edCorrectnessWitness]: Location invariant before [L832-L832] ! multithreaded || (((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-28 00:37:58,661 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] ! multithreaded || (((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-28 00:37:58,661 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] ! multithreaded || (((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-28 00:37:58,661 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 00:37:58,662 INFO L106 edCorrectnessWitness]: ghost_update [L830-L830] multithreaded = 1; [2024-06-28 00:37:58,705 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 00:37:59,033 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:37:59,041 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:37:59,179 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:37:59,207 INFO L206 MainTranslator]: Completed translation [2024-06-28 00:37:59,207 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:37:59 WrapperNode [2024-06-28 00:37:59,208 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 00:37:59,209 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 00:37:59,209 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 00:37:59,209 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 00:37:59,214 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:37:59" (1/1) ... [2024-06-28 00:37:59,242 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:37:59" (1/1) ... [2024-06-28 00:37:59,279 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 124 [2024-06-28 00:37:59,279 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 00:37:59,280 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 00:37:59,280 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 00:37:59,280 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 00:37:59,289 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:37:59" (1/1) ... [2024-06-28 00:37:59,289 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:37:59" (1/1) ... [2024-06-28 00:37:59,292 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:37:59" (1/1) ... [2024-06-28 00:37:59,303 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 00:37:59,307 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:37:59" (1/1) ... [2024-06-28 00:37:59,308 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:37:59" (1/1) ... [2024-06-28 00:37:59,314 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:37:59" (1/1) ... [2024-06-28 00:37:59,325 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:37:59" (1/1) ... [2024-06-28 00:37:59,327 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:37:59" (1/1) ... [2024-06-28 00:37:59,334 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:37:59" (1/1) ... [2024-06-28 00:37:59,336 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 00:37:59,338 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 00:37:59,338 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 00:37:59,339 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 00:37:59,339 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:37:59" (1/1) ... [2024-06-28 00:37:59,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:37:59,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:37:59,361 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 00:37:59,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 00:37:59,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 00:37:59,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 00:37:59,393 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 00:37:59,393 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 00:37:59,393 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 00:37:59,393 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 00:37:59,393 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 00:37:59,393 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 00:37:59,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 00:37:59,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 00:37:59,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 00:37:59,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 00:37:59,394 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 00:37:59,491 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 00:37:59,494 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 00:37:59,816 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 00:37:59,816 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 00:37:59,942 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 00:37:59,942 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 00:37:59,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:37:59 BoogieIcfgContainer [2024-06-28 00:37:59,943 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 00:37:59,946 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 00:37:59,946 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 00:37:59,949 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 00:37:59,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:37:57" (1/4) ... [2024-06-28 00:37:59,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50812fe9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:37:59, skipping insertion in model container [2024-06-28 00:37:59,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 12:37:58" (2/4) ... [2024-06-28 00:37:59,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50812fe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:37:59, skipping insertion in model container [2024-06-28 00:37:59,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:37:59" (3/4) ... [2024-06-28 00:37:59,953 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50812fe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:37:59, skipping insertion in model container [2024-06-28 00:37:59,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:37:59" (4/4) ... [2024-06-28 00:37:59,954 INFO L112 eAbstractionObserver]: Analyzing ICFG safe031_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 00:37:59,967 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 00:37:59,967 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 00:37:59,968 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 00:38:00,009 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 00:38:00,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 41 transitions, 94 flow [2024-06-28 00:38:00,066 INFO L124 PetriNetUnfolderBase]: 0/38 cut-off events. [2024-06-28 00:38:00,066 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:38:00,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 38 events. 0/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 00:38:00,068 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 41 transitions, 94 flow [2024-06-28 00:38:00,071 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2024-06-28 00:38:00,083 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 00:38:00,090 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;@525d9280, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 00:38:00,091 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 00:38:00,095 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 00:38:00,095 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 00:38:00,095 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:38:00,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:00,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 00:38:00,096 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:00,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:00,127 INFO L85 PathProgramCache]: Analyzing trace with hash 362273232, now seen corresponding path program 1 times [2024-06-28 00:38:00,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:00,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615055259] [2024-06-28 00:38:00,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:00,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:00,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:00,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:00,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615055259] [2024-06-28 00:38:00,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615055259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:00,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:00,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:38:00,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647810277] [2024-06-28 00:38:00,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:00,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:38:00,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:00,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:38:00,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:38:00,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 41 [2024-06-28 00:38:00,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:00,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:00,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 41 [2024-06-28 00:38:00,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:00,878 INFO L124 PetriNetUnfolderBase]: 238/467 cut-off events. [2024-06-28 00:38:00,878 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-06-28 00:38:00,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 896 conditions, 467 events. 238/467 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2575 event pairs, 52 based on Foata normal form. 9/447 useless extension candidates. Maximal degree in co-relation 884. Up to 328 conditions per place. [2024-06-28 00:38:00,912 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 24 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2024-06-28 00:38:00,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 39 transitions, 142 flow [2024-06-28 00:38:00,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:38:00,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:38:00,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-06-28 00:38:00,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6991869918699187 [2024-06-28 00:38:00,932 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 3 states and 86 transitions. [2024-06-28 00:38:00,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 39 transitions, 142 flow [2024-06-28 00:38:00,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 138 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 00:38:00,942 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 78 flow [2024-06-28 00:38:00,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-06-28 00:38:00,946 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2024-06-28 00:38:00,946 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 78 flow [2024-06-28 00:38:00,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:00,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:00,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:00,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 00:38:00,947 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:00,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:00,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1773666863, now seen corresponding path program 1 times [2024-06-28 00:38:00,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:00,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782378502] [2024-06-28 00:38:00,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:00,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:00,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:01,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:01,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:01,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782378502] [2024-06-28 00:38:01,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782378502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:01,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:01,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 00:38:01,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108381392] [2024-06-28 00:38:01,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:01,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:38:01,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:01,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:38:01,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:38:01,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 41 [2024-06-28 00:38:01,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:01,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:01,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 41 [2024-06-28 00:38:01,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:01,446 INFO L124 PetriNetUnfolderBase]: 233/465 cut-off events. [2024-06-28 00:38:01,447 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-06-28 00:38:01,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 975 conditions, 465 events. 233/465 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2409 event pairs, 108 based on Foata normal form. 2/456 useless extension candidates. Maximal degree in co-relation 963. Up to 368 conditions per place. [2024-06-28 00:38:01,452 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 28 selfloop transitions, 7 changer transitions 0/48 dead transitions. [2024-06-28 00:38:01,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 48 transitions, 191 flow [2024-06-28 00:38:01,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:38:01,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:38:01,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-06-28 00:38:01,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6890243902439024 [2024-06-28 00:38:01,457 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 78 flow. Second operand 4 states and 113 transitions. [2024-06-28 00:38:01,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 48 transitions, 191 flow [2024-06-28 00:38:01,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 48 transitions, 185 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 00:38:01,459 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 121 flow [2024-06-28 00:38:01,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-06-28 00:38:01,460 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2024-06-28 00:38:01,460 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 121 flow [2024-06-28 00:38:01,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:01,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:01,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:01,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 00:38:01,463 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:01,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:01,464 INFO L85 PathProgramCache]: Analyzing trace with hash 608202576, now seen corresponding path program 1 times [2024-06-28 00:38:01,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:01,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487396635] [2024-06-28 00:38:01,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:01,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:02,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:02,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:02,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487396635] [2024-06-28 00:38:02,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487396635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:02,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:02,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:38:02,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109581987] [2024-06-28 00:38:02,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:02,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:38:02,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:02,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:38:02,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:38:02,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-06-28 00:38:02,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 121 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:02,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:02,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-06-28 00:38:02,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:02,335 INFO L124 PetriNetUnfolderBase]: 310/650 cut-off events. [2024-06-28 00:38:02,335 INFO L125 PetriNetUnfolderBase]: For 276/284 co-relation queries the response was YES. [2024-06-28 00:38:02,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1535 conditions, 650 events. 310/650 cut-off events. For 276/284 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3840 event pairs, 77 based on Foata normal form. 26/660 useless extension candidates. Maximal degree in co-relation 1520. Up to 308 conditions per place. [2024-06-28 00:38:02,339 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 38 selfloop transitions, 12 changer transitions 0/62 dead transitions. [2024-06-28 00:38:02,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 62 transitions, 298 flow [2024-06-28 00:38:02,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:38:02,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:38:02,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-06-28 00:38:02,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2024-06-28 00:38:02,343 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 121 flow. Second operand 6 states and 156 transitions. [2024-06-28 00:38:02,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 62 transitions, 298 flow [2024-06-28 00:38:02,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 62 transitions, 298 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 00:38:02,347 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 195 flow [2024-06-28 00:38:02,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=195, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2024-06-28 00:38:02,348 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2024-06-28 00:38:02,348 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 195 flow [2024-06-28 00:38:02,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:02,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:02,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:02,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 00:38:02,349 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:02,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:02,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1693129999, now seen corresponding path program 1 times [2024-06-28 00:38:02,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:02,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823176872] [2024-06-28 00:38:02,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:02,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:02,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:02,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:02,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823176872] [2024-06-28 00:38:02,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823176872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:02,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:02,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:38:02,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601383965] [2024-06-28 00:38:02,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:02,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:38:02,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:02,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:38:02,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:38:02,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:38:02,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 195 flow. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:02,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:02,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:38:02,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:03,030 INFO L124 PetriNetUnfolderBase]: 314/645 cut-off events. [2024-06-28 00:38:03,031 INFO L125 PetriNetUnfolderBase]: For 774/812 co-relation queries the response was YES. [2024-06-28 00:38:03,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 645 events. 314/645 cut-off events. For 774/812 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3749 event pairs, 89 based on Foata normal form. 20/647 useless extension candidates. Maximal degree in co-relation 1811. Up to 404 conditions per place. [2024-06-28 00:38:03,035 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 34 selfloop transitions, 13 changer transitions 1/60 dead transitions. [2024-06-28 00:38:03,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 60 transitions, 346 flow [2024-06-28 00:38:03,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:38:03,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:38:03,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-06-28 00:38:03,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6146341463414634 [2024-06-28 00:38:03,037 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 195 flow. Second operand 5 states and 126 transitions. [2024-06-28 00:38:03,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 60 transitions, 346 flow [2024-06-28 00:38:03,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 337 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 00:38:03,042 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 247 flow [2024-06-28 00:38:03,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=247, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-06-28 00:38:03,043 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2024-06-28 00:38:03,043 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 247 flow [2024-06-28 00:38:03,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:03,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:03,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:03,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 00:38:03,044 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:03,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:03,045 INFO L85 PathProgramCache]: Analyzing trace with hash 358577935, now seen corresponding path program 2 times [2024-06-28 00:38:03,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:03,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136737848] [2024-06-28 00:38:03,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:03,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:03,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:03,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:03,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136737848] [2024-06-28 00:38:03,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136737848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:03,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:03,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:38:03,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716205332] [2024-06-28 00:38:03,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:03,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:38:03,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:03,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:38:03,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:38:03,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 41 [2024-06-28 00:38:03,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 247 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:03,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:03,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 41 [2024-06-28 00:38:03,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:03,638 INFO L124 PetriNetUnfolderBase]: 256/530 cut-off events. [2024-06-28 00:38:03,638 INFO L125 PetriNetUnfolderBase]: For 1048/1096 co-relation queries the response was YES. [2024-06-28 00:38:03,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1679 conditions, 530 events. 256/530 cut-off events. For 1048/1096 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2914 event pairs, 59 based on Foata normal form. 14/530 useless extension candidates. Maximal degree in co-relation 1656. Up to 342 conditions per place. [2024-06-28 00:38:03,643 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 38 selfloop transitions, 11 changer transitions 0/62 dead transitions. [2024-06-28 00:38:03,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 397 flow [2024-06-28 00:38:03,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:38:03,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:38:03,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2024-06-28 00:38:03,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6731707317073171 [2024-06-28 00:38:03,645 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 247 flow. Second operand 5 states and 138 transitions. [2024-06-28 00:38:03,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 397 flow [2024-06-28 00:38:03,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 373 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-28 00:38:03,654 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 272 flow [2024-06-28 00:38:03,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2024-06-28 00:38:03,655 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2024-06-28 00:38:03,656 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 272 flow [2024-06-28 00:38:03,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:03,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:03,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:03,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 00:38:03,657 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:03,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:03,657 INFO L85 PathProgramCache]: Analyzing trace with hash 996053262, now seen corresponding path program 1 times [2024-06-28 00:38:03,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:03,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033073155] [2024-06-28 00:38:03,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:03,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:04,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:04,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:04,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033073155] [2024-06-28 00:38:04,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033073155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:04,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:04,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:38:04,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149607604] [2024-06-28 00:38:04,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:04,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:38:04,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:04,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:38:04,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:38:04,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-06-28 00:38:04,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 272 flow. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:04,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:04,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-06-28 00:38:04,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:04,550 INFO L124 PetriNetUnfolderBase]: 280/594 cut-off events. [2024-06-28 00:38:04,550 INFO L125 PetriNetUnfolderBase]: For 1231/1285 co-relation queries the response was YES. [2024-06-28 00:38:04,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1861 conditions, 594 events. 280/594 cut-off events. For 1231/1285 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3426 event pairs, 73 based on Foata normal form. 18/594 useless extension candidates. Maximal degree in co-relation 1836. Up to 340 conditions per place. [2024-06-28 00:38:04,554 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 44 selfloop transitions, 13 changer transitions 0/69 dead transitions. [2024-06-28 00:38:04,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 69 transitions, 446 flow [2024-06-28 00:38:04,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:38:04,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:38:04,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 00:38:04,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6167247386759582 [2024-06-28 00:38:04,556 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 272 flow. Second operand 7 states and 177 transitions. [2024-06-28 00:38:04,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 69 transitions, 446 flow [2024-06-28 00:38:04,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 69 transitions, 411 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 00:38:04,561 INFO L231 Difference]: Finished difference. Result has 62 places, 48 transitions, 281 flow [2024-06-28 00:38:04,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=281, PETRI_PLACES=62, PETRI_TRANSITIONS=48} [2024-06-28 00:38:04,563 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2024-06-28 00:38:04,564 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 48 transitions, 281 flow [2024-06-28 00:38:04,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:04,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:04,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:04,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 00:38:04,565 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:04,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:04,566 INFO L85 PathProgramCache]: Analyzing trace with hash 649400590, now seen corresponding path program 2 times [2024-06-28 00:38:04,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:04,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228055592] [2024-06-28 00:38:04,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:04,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:05,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:05,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:05,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228055592] [2024-06-28 00:38:05,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228055592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:05,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:05,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:38:05,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855360004] [2024-06-28 00:38:05,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:05,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:38:05,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:05,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:38:05,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:38:05,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 41 [2024-06-28 00:38:05,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 48 transitions, 281 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:05,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:05,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 41 [2024-06-28 00:38:05,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:05,389 INFO L124 PetriNetUnfolderBase]: 336/735 cut-off events. [2024-06-28 00:38:05,389 INFO L125 PetriNetUnfolderBase]: For 1581/1635 co-relation queries the response was YES. [2024-06-28 00:38:05,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2153 conditions, 735 events. 336/735 cut-off events. For 1581/1635 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4503 event pairs, 75 based on Foata normal form. 26/744 useless extension candidates. Maximal degree in co-relation 2128. Up to 222 conditions per place. [2024-06-28 00:38:05,393 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 43 selfloop transitions, 10 changer transitions 11/77 dead transitions. [2024-06-28 00:38:05,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 77 transitions, 497 flow [2024-06-28 00:38:05,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:38:05,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:38:05,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 168 transitions. [2024-06-28 00:38:05,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6829268292682927 [2024-06-28 00:38:05,395 INFO L175 Difference]: Start difference. First operand has 62 places, 48 transitions, 281 flow. Second operand 6 states and 168 transitions. [2024-06-28 00:38:05,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 77 transitions, 497 flow [2024-06-28 00:38:05,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 77 transitions, 465 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 00:38:05,399 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 244 flow [2024-06-28 00:38:05,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=244, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2024-06-28 00:38:05,400 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2024-06-28 00:38:05,400 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 244 flow [2024-06-28 00:38:05,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:05,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:05,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:05,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 00:38:05,401 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:05,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:05,401 INFO L85 PathProgramCache]: Analyzing trace with hash 181072710, now seen corresponding path program 1 times [2024-06-28 00:38:05,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:05,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844431961] [2024-06-28 00:38:05,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:05,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:05,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:05,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:05,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844431961] [2024-06-28 00:38:05,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844431961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:05,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:05,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:38:05,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558531736] [2024-06-28 00:38:05,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:05,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:38:05,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:05,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:38:05,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:38:05,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 41 [2024-06-28 00:38:05,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 244 flow. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:05,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:05,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 41 [2024-06-28 00:38:05,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:05,880 INFO L124 PetriNetUnfolderBase]: 285/624 cut-off events. [2024-06-28 00:38:05,880 INFO L125 PetriNetUnfolderBase]: For 1512/1554 co-relation queries the response was YES. [2024-06-28 00:38:05,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1879 conditions, 624 events. 285/624 cut-off events. For 1512/1554 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3674 event pairs, 102 based on Foata normal form. 12/622 useless extension candidates. Maximal degree in co-relation 1853. Up to 407 conditions per place. [2024-06-28 00:38:05,884 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 37 selfloop transitions, 8 changer transitions 0/58 dead transitions. [2024-06-28 00:38:05,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 58 transitions, 378 flow [2024-06-28 00:38:05,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:38:05,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:38:05,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-06-28 00:38:05,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.676829268292683 [2024-06-28 00:38:05,885 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 244 flow. Second operand 4 states and 111 transitions. [2024-06-28 00:38:05,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 58 transitions, 378 flow [2024-06-28 00:38:05,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 347 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 00:38:05,888 INFO L231 Difference]: Finished difference. Result has 62 places, 47 transitions, 258 flow [2024-06-28 00:38:05,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=62, PETRI_TRANSITIONS=47} [2024-06-28 00:38:05,889 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2024-06-28 00:38:05,889 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 47 transitions, 258 flow [2024-06-28 00:38:05,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:05,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:05,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:05,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 00:38:05,889 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:05,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:05,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1160155435, now seen corresponding path program 1 times [2024-06-28 00:38:05,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:05,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510092712] [2024-06-28 00:38:05,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:05,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:06,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:06,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:06,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510092712] [2024-06-28 00:38:06,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510092712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:06,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:06,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:38:06,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294503315] [2024-06-28 00:38:06,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:06,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:38:06,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:06,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:38:06,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:38:06,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-06-28 00:38:06,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 47 transitions, 258 flow. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:06,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:06,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-06-28 00:38:06,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:06,657 INFO L124 PetriNetUnfolderBase]: 293/658 cut-off events. [2024-06-28 00:38:06,657 INFO L125 PetriNetUnfolderBase]: For 1399/1435 co-relation queries the response was YES. [2024-06-28 00:38:06,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1875 conditions, 658 events. 293/658 cut-off events. For 1399/1435 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3955 event pairs, 112 based on Foata normal form. 18/662 useless extension candidates. Maximal degree in co-relation 1848. Up to 371 conditions per place. [2024-06-28 00:38:06,661 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 38 selfloop transitions, 9 changer transitions 4/63 dead transitions. [2024-06-28 00:38:06,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 63 transitions, 404 flow [2024-06-28 00:38:06,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:38:06,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:38:06,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-28 00:38:06,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6056910569105691 [2024-06-28 00:38:06,662 INFO L175 Difference]: Start difference. First operand has 62 places, 47 transitions, 258 flow. Second operand 6 states and 149 transitions. [2024-06-28 00:38:06,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 63 transitions, 404 flow [2024-06-28 00:38:06,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 63 transitions, 389 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 00:38:06,665 INFO L231 Difference]: Finished difference. Result has 66 places, 46 transitions, 256 flow [2024-06-28 00:38:06,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=66, PETRI_TRANSITIONS=46} [2024-06-28 00:38:06,666 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2024-06-28 00:38:06,666 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 46 transitions, 256 flow [2024-06-28 00:38:06,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:06,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:06,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:06,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 00:38:06,667 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:06,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:06,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1041817911, now seen corresponding path program 2 times [2024-06-28 00:38:06,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:06,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882913751] [2024-06-28 00:38:06,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:06,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:07,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:07,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:07,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882913751] [2024-06-28 00:38:07,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882913751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:07,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:07,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:38:07,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427441675] [2024-06-28 00:38:07,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:07,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:38:07,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:07,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:38:07,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:38:07,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-06-28 00:38:07,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 46 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:07,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:07,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-06-28 00:38:07,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:07,300 INFO L124 PetriNetUnfolderBase]: 236/520 cut-off events. [2024-06-28 00:38:07,300 INFO L125 PetriNetUnfolderBase]: For 1172/1188 co-relation queries the response was YES. [2024-06-28 00:38:07,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1529 conditions, 520 events. 236/520 cut-off events. For 1172/1188 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2844 event pairs, 96 based on Foata normal form. 6/520 useless extension candidates. Maximal degree in co-relation 1500. Up to 369 conditions per place. [2024-06-28 00:38:07,303 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 36 selfloop transitions, 10 changer transitions 5/63 dead transitions. [2024-06-28 00:38:07,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 63 transitions, 411 flow [2024-06-28 00:38:07,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:38:07,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:38:07,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-28 00:38:07,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6097560975609756 [2024-06-28 00:38:07,304 INFO L175 Difference]: Start difference. First operand has 66 places, 46 transitions, 256 flow. Second operand 6 states and 150 transitions. [2024-06-28 00:38:07,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 63 transitions, 411 flow [2024-06-28 00:38:07,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 63 transitions, 384 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 00:38:07,307 INFO L231 Difference]: Finished difference. Result has 69 places, 46 transitions, 267 flow [2024-06-28 00:38:07,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=267, PETRI_PLACES=69, PETRI_TRANSITIONS=46} [2024-06-28 00:38:07,308 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 27 predicate places. [2024-06-28 00:38:07,309 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 46 transitions, 267 flow [2024-06-28 00:38:07,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:07,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:07,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:07,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 00:38:07,309 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:07,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:07,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1748508420, now seen corresponding path program 1 times [2024-06-28 00:38:07,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:07,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828096710] [2024-06-28 00:38:07,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:07,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:07,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:07,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:07,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828096710] [2024-06-28 00:38:07,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828096710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:07,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:07,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:38:07,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744992446] [2024-06-28 00:38:07,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:07,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:38:07,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:07,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:38:07,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:38:07,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 41 [2024-06-28 00:38:07,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 46 transitions, 267 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 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) [2024-06-28 00:38:07,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:07,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 41 [2024-06-28 00:38:07,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:08,099 INFO L124 PetriNetUnfolderBase]: 216/475 cut-off events. [2024-06-28 00:38:08,100 INFO L125 PetriNetUnfolderBase]: For 1394/1410 co-relation queries the response was YES. [2024-06-28 00:38:08,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1473 conditions, 475 events. 216/475 cut-off events. For 1394/1410 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2566 event pairs, 64 based on Foata normal form. 6/469 useless extension candidates. Maximal degree in co-relation 1442. Up to 289 conditions per place. [2024-06-28 00:38:08,103 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 41 selfloop transitions, 9 changer transitions 0/63 dead transitions. [2024-06-28 00:38:08,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 63 transitions, 413 flow [2024-06-28 00:38:08,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:38:08,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:38:08,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-06-28 00:38:08,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6682926829268293 [2024-06-28 00:38:08,105 INFO L175 Difference]: Start difference. First operand has 69 places, 46 transitions, 267 flow. Second operand 5 states and 137 transitions. [2024-06-28 00:38:08,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 63 transitions, 413 flow [2024-06-28 00:38:08,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 63 transitions, 386 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 00:38:08,110 INFO L231 Difference]: Finished difference. Result has 66 places, 47 transitions, 274 flow [2024-06-28 00:38:08,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=274, PETRI_PLACES=66, PETRI_TRANSITIONS=47} [2024-06-28 00:38:08,111 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2024-06-28 00:38:08,111 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 47 transitions, 274 flow [2024-06-28 00:38:08,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 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) [2024-06-28 00:38:08,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:08,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:08,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 00:38:08,112 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:08,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:08,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1472504964, now seen corresponding path program 2 times [2024-06-28 00:38:08,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:08,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444475134] [2024-06-28 00:38:08,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:08,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:08,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:08,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:08,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444475134] [2024-06-28 00:38:08,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444475134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:08,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:08,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:38:08,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723341184] [2024-06-28 00:38:08,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:08,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:38:08,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:08,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:38:08,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:38:08,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 41 [2024-06-28 00:38:08,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 47 transitions, 274 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 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) [2024-06-28 00:38:08,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:08,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 41 [2024-06-28 00:38:08,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:08,769 INFO L124 PetriNetUnfolderBase]: 208/462 cut-off events. [2024-06-28 00:38:08,769 INFO L125 PetriNetUnfolderBase]: For 1154/1170 co-relation queries the response was YES. [2024-06-28 00:38:08,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1399 conditions, 462 events. 208/462 cut-off events. For 1154/1170 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2513 event pairs, 46 based on Foata normal form. 6/455 useless extension candidates. Maximal degree in co-relation 1371. Up to 233 conditions per place. [2024-06-28 00:38:08,772 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 41 selfloop transitions, 11 changer transitions 0/65 dead transitions. [2024-06-28 00:38:08,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 65 transitions, 420 flow [2024-06-28 00:38:08,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:38:08,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:38:08,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2024-06-28 00:38:08,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6731707317073171 [2024-06-28 00:38:08,773 INFO L175 Difference]: Start difference. First operand has 66 places, 47 transitions, 274 flow. Second operand 5 states and 138 transitions. [2024-06-28 00:38:08,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 65 transitions, 420 flow [2024-06-28 00:38:08,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 65 transitions, 398 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 00:38:08,776 INFO L231 Difference]: Finished difference. Result has 68 places, 47 transitions, 281 flow [2024-06-28 00:38:08,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=281, PETRI_PLACES=68, PETRI_TRANSITIONS=47} [2024-06-28 00:38:08,776 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2024-06-28 00:38:08,777 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 47 transitions, 281 flow [2024-06-28 00:38:08,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 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) [2024-06-28 00:38:08,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:08,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:08,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 00:38:08,777 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:08,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:08,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1757060103, now seen corresponding path program 1 times [2024-06-28 00:38:08,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:08,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405410341] [2024-06-28 00:38:08,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:08,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:08,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:09,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:09,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:09,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405410341] [2024-06-28 00:38:09,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405410341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:09,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:09,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:38:09,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005359663] [2024-06-28 00:38:09,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:09,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:38:09,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:09,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:38:09,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:38:09,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:38:09,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 47 transitions, 281 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:38:09,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:09,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:38:09,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:09,653 INFO L124 PetriNetUnfolderBase]: 248/565 cut-off events. [2024-06-28 00:38:09,653 INFO L125 PetriNetUnfolderBase]: For 1405/1423 co-relation queries the response was YES. [2024-06-28 00:38:09,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1679 conditions, 565 events. 248/565 cut-off events. For 1405/1423 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3223 event pairs, 92 based on Foata normal form. 10/566 useless extension candidates. Maximal degree in co-relation 1649. Up to 326 conditions per place. [2024-06-28 00:38:09,657 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 31 selfloop transitions, 4 changer transitions 23/70 dead transitions. [2024-06-28 00:38:09,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 70 transitions, 467 flow [2024-06-28 00:38:09,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:38:09,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:38:09,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-28 00:38:09,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5579268292682927 [2024-06-28 00:38:09,658 INFO L175 Difference]: Start difference. First operand has 68 places, 47 transitions, 281 flow. Second operand 8 states and 183 transitions. [2024-06-28 00:38:09,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 70 transitions, 467 flow [2024-06-28 00:38:09,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 70 transitions, 442 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 00:38:09,662 INFO L231 Difference]: Finished difference. Result has 75 places, 43 transitions, 246 flow [2024-06-28 00:38:09,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=246, PETRI_PLACES=75, PETRI_TRANSITIONS=43} [2024-06-28 00:38:09,663 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 33 predicate places. [2024-06-28 00:38:09,663 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 43 transitions, 246 flow [2024-06-28 00:38:09,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:38:09,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:09,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:09,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 00:38:09,664 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:09,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:09,664 INFO L85 PathProgramCache]: Analyzing trace with hash 2082791619, now seen corresponding path program 2 times [2024-06-28 00:38:09,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:09,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808990764] [2024-06-28 00:38:09,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:09,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:10,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:10,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:10,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808990764] [2024-06-28 00:38:10,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808990764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:10,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:10,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:38:10,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472819659] [2024-06-28 00:38:10,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:10,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:38:10,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:10,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:38:10,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:38:10,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 41 [2024-06-28 00:38:10,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 43 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:10,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:10,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 41 [2024-06-28 00:38:10,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:10,663 INFO L124 PetriNetUnfolderBase]: 206/463 cut-off events. [2024-06-28 00:38:10,663 INFO L125 PetriNetUnfolderBase]: For 1320/1332 co-relation queries the response was YES. [2024-06-28 00:38:10,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1350 conditions, 463 events. 206/463 cut-off events. For 1320/1332 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2542 event pairs, 74 based on Foata normal form. 10/466 useless extension candidates. Maximal degree in co-relation 1317. Up to 245 conditions per place. [2024-06-28 00:38:10,666 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 32 selfloop transitions, 6 changer transitions 9/60 dead transitions. [2024-06-28 00:38:10,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 60 transitions, 380 flow [2024-06-28 00:38:10,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:38:10,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:38:10,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-28 00:38:10,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6300813008130082 [2024-06-28 00:38:10,668 INFO L175 Difference]: Start difference. First operand has 75 places, 43 transitions, 246 flow. Second operand 6 states and 155 transitions. [2024-06-28 00:38:10,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 60 transitions, 380 flow [2024-06-28 00:38:10,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 60 transitions, 352 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 00:38:10,671 INFO L231 Difference]: Finished difference. Result has 67 places, 41 transitions, 218 flow [2024-06-28 00:38:10,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=67, PETRI_TRANSITIONS=41} [2024-06-28 00:38:10,672 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2024-06-28 00:38:10,672 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 41 transitions, 218 flow [2024-06-28 00:38:10,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:10,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:10,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:10,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 00:38:10,673 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:10,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:10,673 INFO L85 PathProgramCache]: Analyzing trace with hash -679363821, now seen corresponding path program 3 times [2024-06-28 00:38:10,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:10,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954504640] [2024-06-28 00:38:10,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:10,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:11,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:11,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:11,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954504640] [2024-06-28 00:38:11,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954504640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:11,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:11,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:38:11,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715135004] [2024-06-28 00:38:11,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:11,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:38:11,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:11,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:38:11,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:38:11,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-06-28 00:38:11,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 41 transitions, 218 flow. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:11,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:11,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-06-28 00:38:11,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:11,733 INFO L124 PetriNetUnfolderBase]: 172/405 cut-off events. [2024-06-28 00:38:11,733 INFO L125 PetriNetUnfolderBase]: For 1135/1149 co-relation queries the response was YES. [2024-06-28 00:38:11,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1151 conditions, 405 events. 172/405 cut-off events. For 1135/1149 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2163 event pairs, 80 based on Foata normal form. 10/404 useless extension candidates. Maximal degree in co-relation 1124. Up to 211 conditions per place. [2024-06-28 00:38:11,735 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 26 selfloop transitions, 5 changer transitions 14/57 dead transitions. [2024-06-28 00:38:11,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 57 transitions, 344 flow [2024-06-28 00:38:11,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:38:11,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:38:11,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 00:38:11,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5818815331010453 [2024-06-28 00:38:11,737 INFO L175 Difference]: Start difference. First operand has 67 places, 41 transitions, 218 flow. Second operand 7 states and 167 transitions. [2024-06-28 00:38:11,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 57 transitions, 344 flow [2024-06-28 00:38:11,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 57 transitions, 328 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 00:38:11,742 INFO L231 Difference]: Finished difference. Result has 66 places, 37 transitions, 176 flow [2024-06-28 00:38:11,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=176, PETRI_PLACES=66, PETRI_TRANSITIONS=37} [2024-06-28 00:38:11,743 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2024-06-28 00:38:11,743 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 37 transitions, 176 flow [2024-06-28 00:38:11,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:11,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:11,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:11,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 00:38:11,744 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:11,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:11,745 INFO L85 PathProgramCache]: Analyzing trace with hash 2033299027, now seen corresponding path program 4 times [2024-06-28 00:38:11,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:11,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310435175] [2024-06-28 00:38:11,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:11,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:12,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:12,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:12,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310435175] [2024-06-28 00:38:12,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310435175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:12,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:12,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:38:12,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697546695] [2024-06-28 00:38:12,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:12,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:38:12,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:12,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:38:12,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:38:12,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 41 [2024-06-28 00:38:12,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 37 transitions, 176 flow. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:12,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:12,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 41 [2024-06-28 00:38:12,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:12,513 INFO L124 PetriNetUnfolderBase]: 144/346 cut-off events. [2024-06-28 00:38:12,513 INFO L125 PetriNetUnfolderBase]: For 857/869 co-relation queries the response was YES. [2024-06-28 00:38:12,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 943 conditions, 346 events. 144/346 cut-off events. For 857/869 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1793 event pairs, 30 based on Foata normal form. 10/348 useless extension candidates. Maximal degree in co-relation 928. Up to 77 conditions per place. [2024-06-28 00:38:12,515 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 26 selfloop transitions, 5 changer transitions 11/55 dead transitions. [2024-06-28 00:38:12,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 55 transitions, 312 flow [2024-06-28 00:38:12,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:38:12,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:38:12,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-28 00:38:12,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6260162601626016 [2024-06-28 00:38:12,517 INFO L175 Difference]: Start difference. First operand has 66 places, 37 transitions, 176 flow. Second operand 6 states and 154 transitions. [2024-06-28 00:38:12,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 55 transitions, 312 flow [2024-06-28 00:38:12,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 55 transitions, 292 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 00:38:12,519 INFO L231 Difference]: Finished difference. Result has 62 places, 33 transitions, 138 flow [2024-06-28 00:38:12,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=138, PETRI_PLACES=62, PETRI_TRANSITIONS=33} [2024-06-28 00:38:12,520 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2024-06-28 00:38:12,520 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 33 transitions, 138 flow [2024-06-28 00:38:12,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:12,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:12,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:12,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 00:38:12,520 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:12,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:12,521 INFO L85 PathProgramCache]: Analyzing trace with hash -349583047, now seen corresponding path program 5 times [2024-06-28 00:38:12,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:12,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354474628] [2024-06-28 00:38:12,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:12,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:13,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:13,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:13,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354474628] [2024-06-28 00:38:13,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354474628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:13,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:13,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:38:13,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364165659] [2024-06-28 00:38:13,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:13,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:38:13,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:13,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:38:13,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:38:13,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:38:13,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 33 transitions, 138 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:38:13,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:13,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:38:13,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:13,436 INFO L124 PetriNetUnfolderBase]: 94/224 cut-off events. [2024-06-28 00:38:13,437 INFO L125 PetriNetUnfolderBase]: For 483/483 co-relation queries the response was YES. [2024-06-28 00:38:13,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 224 events. 94/224 cut-off events. For 483/483 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 999 event pairs, 18 based on Foata normal form. 8/226 useless extension candidates. Maximal degree in co-relation 593. Up to 85 conditions per place. [2024-06-28 00:38:13,438 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 16 selfloop transitions, 4 changer transitions 13/45 dead transitions. [2024-06-28 00:38:13,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 45 transitions, 228 flow [2024-06-28 00:38:13,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:38:13,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:38:13,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 170 transitions. [2024-06-28 00:38:13,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182926829268293 [2024-06-28 00:38:13,439 INFO L175 Difference]: Start difference. First operand has 62 places, 33 transitions, 138 flow. Second operand 8 states and 170 transitions. [2024-06-28 00:38:13,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 45 transitions, 228 flow [2024-06-28 00:38:13,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 45 transitions, 209 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 00:38:13,441 INFO L231 Difference]: Finished difference. Result has 59 places, 30 transitions, 106 flow [2024-06-28 00:38:13,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=106, PETRI_PLACES=59, PETRI_TRANSITIONS=30} [2024-06-28 00:38:13,442 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2024-06-28 00:38:13,442 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 30 transitions, 106 flow [2024-06-28 00:38:13,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:38:13,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:13,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:13,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 00:38:13,442 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:13,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:13,443 INFO L85 PathProgramCache]: Analyzing trace with hash 499555441, now seen corresponding path program 6 times [2024-06-28 00:38:13,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:13,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321139308] [2024-06-28 00:38:13,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:13,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:14,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:14,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:14,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321139308] [2024-06-28 00:38:14,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321139308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:14,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:14,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:38:14,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90797393] [2024-06-28 00:38:14,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:14,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:38:14,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:14,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:38:14,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:38:14,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:38:14,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 30 transitions, 106 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:38:14,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:14,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:38:14,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:14,246 INFO L124 PetriNetUnfolderBase]: 38/104 cut-off events. [2024-06-28 00:38:14,247 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2024-06-28 00:38:14,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 104 events. 38/104 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 299 event pairs, 6 based on Foata normal form. 8/110 useless extension candidates. Maximal degree in co-relation 242. Up to 40 conditions per place. [2024-06-28 00:38:14,247 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2024-06-28 00:38:14,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 36 transitions, 158 flow [2024-06-28 00:38:14,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:38:14,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:38:14,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-28 00:38:14,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5017421602787456 [2024-06-28 00:38:14,250 INFO L175 Difference]: Start difference. First operand has 59 places, 30 transitions, 106 flow. Second operand 7 states and 144 transitions. [2024-06-28 00:38:14,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 36 transitions, 158 flow [2024-06-28 00:38:14,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 36 transitions, 134 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-06-28 00:38:14,250 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2024-06-28 00:38:14,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2024-06-28 00:38:14,251 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2024-06-28 00:38:14,251 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2024-06-28 00:38:14,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:38:14,253 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-28 00:38:14,254 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-28 00:38:14,254 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-28 00:38:14,254 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-28 00:38:14,254 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-28 00:38:14,254 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-28 00:38:14,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 00:38:14,255 INFO L445 BasicCegarLoop]: Path program histogram: [6, 2, 2, 2, 2, 1, 1, 1, 1] [2024-06-28 00:38:14,257 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 00:38:14,258 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 00:38:14,260 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-28 00:38:14,260 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-28 00:38:14,261 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 12:38:14 BasicIcfg [2024-06-28 00:38:14,261 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 00:38:14,262 INFO L158 Benchmark]: Toolchain (without parser) took 15628.08ms. Allocated memory was 146.8MB in the beginning and 658.5MB in the end (delta: 511.7MB). Free memory was 70.1MB in the beginning and 436.1MB in the end (delta: -366.0MB). Peak memory consumption was 147.4MB. Max. memory is 16.1GB. [2024-06-28 00:38:14,262 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 146.8MB. Free memory is still 99.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:38:14,262 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 146.8MB. Free memory is still 117.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:38:14,262 INFO L158 Benchmark]: CACSL2BoogieTranslator took 573.11ms. Allocated memory was 146.8MB in the beginning and 197.1MB in the end (delta: 50.3MB). Free memory was 69.9MB in the beginning and 158.7MB in the end (delta: -88.8MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. [2024-06-28 00:38:14,263 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.07ms. Allocated memory is still 197.1MB. Free memory was 158.7MB in the beginning and 155.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 00:38:14,263 INFO L158 Benchmark]: Boogie Preprocessor took 57.65ms. Allocated memory is still 197.1MB. Free memory was 155.5MB in the beginning and 151.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 00:38:14,263 INFO L158 Benchmark]: RCFGBuilder took 604.79ms. Allocated memory is still 197.1MB. Free memory was 151.3MB in the beginning and 92.6MB in the end (delta: 58.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-06-28 00:38:14,263 INFO L158 Benchmark]: TraceAbstraction took 14315.24ms. Allocated memory was 197.1MB in the beginning and 658.5MB in the end (delta: 461.4MB). Free memory was 91.6MB in the beginning and 436.1MB in the end (delta: -344.5MB). Peak memory consumption was 117.9MB. Max. memory is 16.1GB. [2024-06-28 00:38:14,264 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.16ms. Allocated memory is still 146.8MB. Free memory is still 99.1MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.15ms. Allocated memory is still 146.8MB. Free memory is still 117.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 573.11ms. Allocated memory was 146.8MB in the beginning and 197.1MB in the end (delta: 50.3MB). Free memory was 69.9MB in the beginning and 158.7MB in the end (delta: -88.8MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.07ms. Allocated memory is still 197.1MB. Free memory was 158.7MB in the beginning and 155.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.65ms. Allocated memory is still 197.1MB. Free memory was 155.5MB in the beginning and 151.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 604.79ms. Allocated memory is still 197.1MB. Free memory was 151.3MB in the beginning and 92.6MB in the end (delta: 58.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * TraceAbstraction took 14315.24ms. Allocated memory was 197.1MB in the beginning and 658.5MB in the end (delta: 461.4MB). Free memory was 91.6MB in the beginning and 436.1MB in the end (delta: -344.5MB). Peak memory consumption was 117.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 832]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 834]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 835]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 67 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.2s, OverallIterations: 18, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 693 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 579 mSDsluCounter, 93 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 62 mSDsCounter, 115 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2797 IncrementalHoareTripleChecker+Invalid, 2912 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 115 mSolverCounterUnsat, 31 mSDtfsCounter, 2797 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=281occurred in iteration=6, InterpolantAutomatonStates: 104, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 10.0s InterpolantComputationTime, 322 NumberOfCodeBlocks, 322 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 304 ConstructedInterpolants, 0 QuantifiedInterpolants, 7134 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 00:38:14,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE