./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe020_power.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe020_power.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/safe020_power.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe020_power.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:51:12,431 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:51:12,511 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:51:12,517 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:51:12,517 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:51:12,536 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:51:12,538 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:51:12,538 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:51:12,540 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:51:12,542 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:51:12,542 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:51:12,543 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:51:12,544 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:51:12,547 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:51:12,547 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:51:12,548 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:51:12,548 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:51:12,548 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:51:12,548 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:51:12,549 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:51:12,549 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:51:12,549 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:51:12,550 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:51:12,550 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:51:12,550 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:51:12,550 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:51:12,551 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:51:12,551 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:51:12,552 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:51:12,552 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:51:12,553 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:51:12,553 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:51:12,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:51:12,553 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:51:12,554 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:51:12,554 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:51:12,554 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:51:12,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:51:12,555 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:51:12,555 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:51:12,555 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:51:12,555 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:51:12,555 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:51:12,556 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:51:12,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:51:12,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:51:12,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:51:12,806 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:51:12,807 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:51:12,807 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe020_power.yml/witness.yml [2024-06-27 22:51:12,936 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:51:12,936 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:51:12,937 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_power.i [2024-06-27 22:51:13,988 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:51:14,222 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:51:14,222 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_power.i [2024-06-27 22:51:14,239 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8502a65e4/cb45f130a6de4f0498e6cb7e8155b1e7/FLAGad799eb60 [2024-06-27 22:51:14,250 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8502a65e4/cb45f130a6de4f0498e6cb7e8155b1e7 [2024-06-27 22:51:14,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:51:14,252 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:51:14,253 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:51:14,253 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:51:14,258 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:51:14,258 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:51:12" (1/2) ... [2024-06-27 22:51:14,259 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2085992b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:51:14, skipping insertion in model container [2024-06-27 22:51:14,260 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:51:12" (1/2) ... [2024-06-27 22:51:14,261 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1003a27f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:51:14, skipping insertion in model container [2024-06-27 22:51:14,262 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:51:14" (2/2) ... [2024-06-27 22:51:14,263 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2085992b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:14, skipping insertion in model container [2024-06-27 22:51:14,264 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:51:14" (2/2) ... [2024-06-27 22:51:14,264 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:51:14,299 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:51:14,300 INFO L97 edCorrectnessWitness]: Location invariant before [L864-L864] ! multithreaded || ((((((((((((((((((((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 )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$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 22:51:14,300 INFO L97 edCorrectnessWitness]: Location invariant before [L865-L865] ! multithreaded || ((((((((((((((((((((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 )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$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 22:51:14,300 INFO L97 edCorrectnessWitness]: Location invariant before [L862-L862] ! multithreaded || ((((((((((((((((((((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 )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$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 22:51:14,300 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:51:14,301 INFO L106 edCorrectnessWitness]: ghost_update [L860-L860] multithreaded = 1; [2024-06-27 22:51:14,350 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:51:14,479 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_power.i[990,1003] [2024-06-27 22:51:14,653 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:51:14,665 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:51:14,698 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_power.i[990,1003] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:51:14,804 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:51:14,846 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:51:14,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:14 WrapperNode [2024-06-27 22:51:14,847 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:51:14,867 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:51:14,867 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:51:14,867 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:51:14,873 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:14" (1/1) ... [2024-06-27 22:51:14,895 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:14" (1/1) ... [2024-06-27 22:51:14,931 INFO L138 Inliner]: procedures = 175, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 192 [2024-06-27 22:51:14,932 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:51:14,933 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:51:14,933 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:51:14,933 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:51:14,943 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:14" (1/1) ... [2024-06-27 22:51:14,944 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:14" (1/1) ... [2024-06-27 22:51:14,949 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:14" (1/1) ... [2024-06-27 22:51:14,977 INFO L175 MemorySlicer]: Split 30 memory accesses to 2 slices as follows [2, 28]. 93 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 7 writes are split as follows [0, 7]. [2024-06-27 22:51:14,977 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:14" (1/1) ... [2024-06-27 22:51:14,978 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:14" (1/1) ... [2024-06-27 22:51:14,988 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:14" (1/1) ... [2024-06-27 22:51:14,991 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:14" (1/1) ... [2024-06-27 22:51:14,993 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:14" (1/1) ... [2024-06-27 22:51:14,995 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:14" (1/1) ... [2024-06-27 22:51:15,000 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:51:15,001 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:51:15,001 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:51:15,001 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:51:15,002 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:14" (1/1) ... [2024-06-27 22:51:15,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:51:15,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:51:15,042 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) [2024-06-27 22:51:15,063 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 [2024-06-27 22:51:15,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 22:51:15,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 22:51:15,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 22:51:15,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 22:51:15,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:51:15,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:51:15,079 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:51:15,079 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:51:15,079 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:51:15,079 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:51:15,079 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:51:15,080 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:51:15,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:51:15,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 22:51:15,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:51:15,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:51:15,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:51:15,084 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 22:51:15,252 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:51:15,253 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:51:15,783 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:51:15,783 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:51:16,143 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:51:16,144 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:51:16,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:51:16 BoogieIcfgContainer [2024-06-27 22:51:16,144 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:51:16,146 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:51:16,146 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:51:16,149 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:51:16,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:51:12" (1/4) ... [2024-06-27 22:51:16,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f4550f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:51:16, skipping insertion in model container [2024-06-27 22:51:16,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:51:14" (2/4) ... [2024-06-27 22:51:16,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f4550f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:51:16, skipping insertion in model container [2024-06-27 22:51:16,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:14" (3/4) ... [2024-06-27 22:51:16,151 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f4550f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:51:16, skipping insertion in model container [2024-06-27 22:51:16,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:51:16" (4/4) ... [2024-06-27 22:51:16,152 INFO L112 eAbstractionObserver]: Analyzing ICFG safe020_power.i [2024-06-27 22:51:16,168 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:51:16,169 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 22:51:16,169 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:51:16,237 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:51:16,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 22:51:16,311 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-27 22:51:16,312 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:51:16,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 61 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-06-27 22:51:16,316 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 22:51:16,321 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-27 22:51:16,334 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:51:16,346 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;@ee9746, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:51:16,346 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 22:51:16,349 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:51:16,350 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:51:16,350 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:51:16,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:16,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:51:16,352 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:16,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:16,399 INFO L85 PathProgramCache]: Analyzing trace with hash 764336683, now seen corresponding path program 1 times [2024-06-27 22:51:16,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:16,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489963389] [2024-06-27 22:51:16,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:16,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:17,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:17,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:17,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489963389] [2024-06-27 22:51:17,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489963389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:17,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:17,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:51:17,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464956747] [2024-06-27 22:51:17,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:17,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:51:17,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:17,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:51:17,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:51:17,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 48 [2024-06-27 22:51:17,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:17,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:17,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 48 [2024-06-27 22:51:17,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:18,033 INFO L124 PetriNetUnfolderBase]: 1052/1764 cut-off events. [2024-06-27 22:51:18,033 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-06-27 22:51:18,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3391 conditions, 1764 events. 1052/1764 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 11452 event pairs, 188 based on Foata normal form. 48/1738 useless extension candidates. Maximal degree in co-relation 3379. Up to 1300 conditions per place. [2024-06-27 22:51:18,049 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 41 selfloop transitions, 2 changer transitions 2/59 dead transitions. [2024-06-27 22:51:18,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 59 transitions, 220 flow [2024-06-27 22:51:18,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:51:18,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:51:18,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-06-27 22:51:18,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2024-06-27 22:51:18,062 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 102 transitions. [2024-06-27 22:51:18,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 59 transitions, 220 flow [2024-06-27 22:51:18,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 216 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:51:18,071 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 98 flow [2024-06-27 22:51:18,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2024-06-27 22:51:18,077 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -2 predicate places. [2024-06-27 22:51:18,077 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 98 flow [2024-06-27 22:51:18,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:18,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:18,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:18,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:51:18,078 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:18,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:18,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1297270919, now seen corresponding path program 1 times [2024-06-27 22:51:18,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:18,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906254836] [2024-06-27 22:51:18,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:18,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:18,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:18,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:18,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:18,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906254836] [2024-06-27 22:51:18,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906254836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:18,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:18,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:51:18,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10708660] [2024-06-27 22:51:18,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:18,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:51:18,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:18,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:51:18,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:51:18,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 48 [2024-06-27 22:51:18,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:18,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:18,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 48 [2024-06-27 22:51:18,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:18,968 INFO L124 PetriNetUnfolderBase]: 943/1756 cut-off events. [2024-06-27 22:51:18,969 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2024-06-27 22:51:18,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3483 conditions, 1756 events. 943/1756 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 11409 event pairs, 492 based on Foata normal form. 2/1687 useless extension candidates. Maximal degree in co-relation 3471. Up to 1401 conditions per place. [2024-06-27 22:51:18,980 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 46 selfloop transitions, 9 changer transitions 0/69 dead transitions. [2024-06-27 22:51:18,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 69 transitions, 273 flow [2024-06-27 22:51:18,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:51:18,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:51:18,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-06-27 22:51:18,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6510416666666666 [2024-06-27 22:51:18,985 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 98 flow. Second operand 4 states and 125 transitions. [2024-06-27 22:51:18,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 69 transitions, 273 flow [2024-06-27 22:51:18,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 69 transitions, 267 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:51:18,990 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 153 flow [2024-06-27 22:51:18,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2024-06-27 22:51:18,993 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-27 22:51:18,993 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 153 flow [2024-06-27 22:51:18,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:18,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:19,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:19,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:51:19,000 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:19,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:19,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1560691048, now seen corresponding path program 1 times [2024-06-27 22:51:19,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:19,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592782994] [2024-06-27 22:51:19,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:19,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:19,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:19,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:19,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592782994] [2024-06-27 22:51:19,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592782994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:19,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:19,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:51:19,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957953404] [2024-06-27 22:51:19,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:19,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:51:19,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:19,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:51:19,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:51:19,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 48 [2024-06-27 22:51:19,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 153 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:19,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:19,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 48 [2024-06-27 22:51:19,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:20,401 INFO L124 PetriNetUnfolderBase]: 956/1779 cut-off events. [2024-06-27 22:51:20,401 INFO L125 PetriNetUnfolderBase]: For 521/521 co-relation queries the response was YES. [2024-06-27 22:51:20,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4062 conditions, 1779 events. 956/1779 cut-off events. For 521/521 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 11602 event pairs, 459 based on Foata normal form. 4/1719 useless extension candidates. Maximal degree in co-relation 4048. Up to 1365 conditions per place. [2024-06-27 22:51:20,415 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 63 selfloop transitions, 16 changer transitions 0/93 dead transitions. [2024-06-27 22:51:20,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 93 transitions, 426 flow [2024-06-27 22:51:20,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:51:20,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:51:20,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2024-06-27 22:51:20,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-27 22:51:20,417 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 153 flow. Second operand 5 states and 160 transitions. [2024-06-27 22:51:20,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 93 transitions, 426 flow [2024-06-27 22:51:20,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 93 transitions, 426 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 22:51:20,420 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 250 flow [2024-06-27 22:51:20,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=250, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-06-27 22:51:20,421 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2024-06-27 22:51:20,422 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 250 flow [2024-06-27 22:51:20,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:20,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:20,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:20,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:51:20,423 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:20,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:20,423 INFO L85 PathProgramCache]: Analyzing trace with hash 864560367, now seen corresponding path program 1 times [2024-06-27 22:51:20,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:20,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523623960] [2024-06-27 22:51:20,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:20,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:21,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:21,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:21,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523623960] [2024-06-27 22:51:21,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523623960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:21,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:21,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:51:21,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495796710] [2024-06-27 22:51:21,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:21,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:51:21,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:21,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:51:21,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:51:21,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 22:51:21,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 250 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 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) [2024-06-27 22:51:21,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:21,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 22:51:21,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:21,745 INFO L124 PetriNetUnfolderBase]: 1082/1961 cut-off events. [2024-06-27 22:51:21,746 INFO L125 PetriNetUnfolderBase]: For 1668/1668 co-relation queries the response was YES. [2024-06-27 22:51:21,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5294 conditions, 1961 events. 1082/1961 cut-off events. For 1668/1668 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 12219 event pairs, 305 based on Foata normal form. 6/1908 useless extension candidates. Maximal degree in co-relation 5274. Up to 1477 conditions per place. [2024-06-27 22:51:21,761 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 74 selfloop transitions, 19 changer transitions 0/106 dead transitions. [2024-06-27 22:51:21,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 106 transitions, 582 flow [2024-06-27 22:51:21,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:51:21,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:51:21,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-27 22:51:21,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5494791666666666 [2024-06-27 22:51:21,765 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 250 flow. Second operand 8 states and 211 transitions. [2024-06-27 22:51:21,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 106 transitions, 582 flow [2024-06-27 22:51:21,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 106 transitions, 576 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-06-27 22:51:21,771 INFO L231 Difference]: Finished difference. Result has 71 places, 70 transitions, 373 flow [2024-06-27 22:51:21,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=373, PETRI_PLACES=71, PETRI_TRANSITIONS=70} [2024-06-27 22:51:21,772 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 17 predicate places. [2024-06-27 22:51:21,772 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 373 flow [2024-06-27 22:51:21,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 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) [2024-06-27 22:51:21,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:21,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:21,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:51:21,773 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:21,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:21,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1533778441, now seen corresponding path program 2 times [2024-06-27 22:51:21,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:21,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063980525] [2024-06-27 22:51:21,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:21,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:22,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:22,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:22,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063980525] [2024-06-27 22:51:22,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063980525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:22,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:22,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:51:22,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278400406] [2024-06-27 22:51:22,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:22,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:51:22,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:22,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:51:22,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:51:22,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 48 [2024-06-27 22:51:22,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 373 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:22,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:22,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 48 [2024-06-27 22:51:22,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:23,075 INFO L124 PetriNetUnfolderBase]: 1195/2133 cut-off events. [2024-06-27 22:51:23,075 INFO L125 PetriNetUnfolderBase]: For 3113/3117 co-relation queries the response was YES. [2024-06-27 22:51:23,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6557 conditions, 2133 events. 1195/2133 cut-off events. For 3113/3117 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 13811 event pairs, 236 based on Foata normal form. 6/2072 useless extension candidates. Maximal degree in co-relation 6532. Up to 1420 conditions per place. [2024-06-27 22:51:23,124 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 69 selfloop transitions, 29 changer transitions 0/112 dead transitions. [2024-06-27 22:51:23,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 112 transitions, 734 flow [2024-06-27 22:51:23,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:51:23,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:51:23,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 157 transitions. [2024-06-27 22:51:23,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6541666666666667 [2024-06-27 22:51:23,128 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 373 flow. Second operand 5 states and 157 transitions. [2024-06-27 22:51:23,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 112 transitions, 734 flow [2024-06-27 22:51:23,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 112 transitions, 706 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-27 22:51:23,140 INFO L231 Difference]: Finished difference. Result has 76 places, 82 transitions, 533 flow [2024-06-27 22:51:23,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=533, PETRI_PLACES=76, PETRI_TRANSITIONS=82} [2024-06-27 22:51:23,141 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 22 predicate places. [2024-06-27 22:51:23,141 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 82 transitions, 533 flow [2024-06-27 22:51:23,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:23,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:23,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:23,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:51:23,142 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:23,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:23,142 INFO L85 PathProgramCache]: Analyzing trace with hash -810730949, now seen corresponding path program 3 times [2024-06-27 22:51:23,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:23,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148199679] [2024-06-27 22:51:23,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:23,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:23,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:23,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:23,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148199679] [2024-06-27 22:51:23,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148199679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:23,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:23,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:51:23,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085143491] [2024-06-27 22:51:23,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:23,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:51:23,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:23,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:51:23,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:51:23,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 22:51:23,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 82 transitions, 533 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 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) [2024-06-27 22:51:23,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:23,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 22:51:23,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:24,255 INFO L124 PetriNetUnfolderBase]: 1331/2375 cut-off events. [2024-06-27 22:51:24,255 INFO L125 PetriNetUnfolderBase]: For 6068/6072 co-relation queries the response was YES. [2024-06-27 22:51:24,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8591 conditions, 2375 events. 1331/2375 cut-off events. For 6068/6072 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 15312 event pairs, 206 based on Foata normal form. 6/2333 useless extension candidates. Maximal degree in co-relation 8562. Up to 1692 conditions per place. [2024-06-27 22:51:24,277 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 96 selfloop transitions, 47 changer transitions 0/156 dead transitions. [2024-06-27 22:51:24,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 156 transitions, 1185 flow [2024-06-27 22:51:24,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:51:24,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:51:24,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 208 transitions. [2024-06-27 22:51:24,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-06-27 22:51:24,279 INFO L175 Difference]: Start difference. First operand has 76 places, 82 transitions, 533 flow. Second operand 7 states and 208 transitions. [2024-06-27 22:51:24,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 156 transitions, 1185 flow [2024-06-27 22:51:24,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 156 transitions, 1163 flow, removed 11 selfloop flow, removed 0 redundant places. [2024-06-27 22:51:24,296 INFO L231 Difference]: Finished difference. Result has 85 places, 110 transitions, 952 flow [2024-06-27 22:51:24,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=952, PETRI_PLACES=85, PETRI_TRANSITIONS=110} [2024-06-27 22:51:24,297 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 31 predicate places. [2024-06-27 22:51:24,298 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 110 transitions, 952 flow [2024-06-27 22:51:24,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 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) [2024-06-27 22:51:24,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:24,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:24,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:51:24,299 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:24,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:24,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1931905114, now seen corresponding path program 1 times [2024-06-27 22:51:24,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:24,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452056040] [2024-06-27 22:51:24,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:24,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:25,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:25,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:25,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452056040] [2024-06-27 22:51:25,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452056040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:25,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:25,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:51:25,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761958619] [2024-06-27 22:51:25,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:25,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:51:25,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:25,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:51:25,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:51:25,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 22:51:25,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 110 transitions, 952 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 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) [2024-06-27 22:51:25,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:25,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 22:51:25,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:26,439 INFO L124 PetriNetUnfolderBase]: 1813/3256 cut-off events. [2024-06-27 22:51:26,440 INFO L125 PetriNetUnfolderBase]: For 12117/12121 co-relation queries the response was YES. [2024-06-27 22:51:26,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12601 conditions, 3256 events. 1813/3256 cut-off events. For 12117/12121 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 22536 event pairs, 338 based on Foata normal form. 28/3177 useless extension candidates. Maximal degree in co-relation 12566. Up to 1270 conditions per place. [2024-06-27 22:51:26,471 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 98 selfloop transitions, 51 changer transitions 0/162 dead transitions. [2024-06-27 22:51:26,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 162 transitions, 1502 flow [2024-06-27 22:51:26,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:51:26,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:51:26,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2024-06-27 22:51:26,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5803571428571429 [2024-06-27 22:51:26,473 INFO L175 Difference]: Start difference. First operand has 85 places, 110 transitions, 952 flow. Second operand 7 states and 195 transitions. [2024-06-27 22:51:26,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 162 transitions, 1502 flow [2024-06-27 22:51:26,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 162 transitions, 1435 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-27 22:51:26,510 INFO L231 Difference]: Finished difference. Result has 89 places, 117 transitions, 1144 flow [2024-06-27 22:51:26,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=891, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1144, PETRI_PLACES=89, PETRI_TRANSITIONS=117} [2024-06-27 22:51:26,511 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 35 predicate places. [2024-06-27 22:51:26,511 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 117 transitions, 1144 flow [2024-06-27 22:51:26,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 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) [2024-06-27 22:51:26,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:26,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:26,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:51:26,512 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:26,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:26,513 INFO L85 PathProgramCache]: Analyzing trace with hash -302489638, now seen corresponding path program 2 times [2024-06-27 22:51:26,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:26,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049830253] [2024-06-27 22:51:26,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:26,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:27,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:27,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:27,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049830253] [2024-06-27 22:51:27,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049830253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:27,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:27,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:51:27,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870699867] [2024-06-27 22:51:27,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:27,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:51:27,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:27,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:51:27,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:51:27,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 48 [2024-06-27 22:51:27,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 117 transitions, 1144 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:27,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:27,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 48 [2024-06-27 22:51:27,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:28,538 INFO L124 PetriNetUnfolderBase]: 2045/3769 cut-off events. [2024-06-27 22:51:28,538 INFO L125 PetriNetUnfolderBase]: For 17319/17323 co-relation queries the response was YES. [2024-06-27 22:51:28,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15283 conditions, 3769 events. 2045/3769 cut-off events. For 17319/17323 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 27244 event pairs, 599 based on Foata normal form. 20/3667 useless extension candidates. Maximal degree in co-relation 15248. Up to 2307 conditions per place. [2024-06-27 22:51:28,582 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 104 selfloop transitions, 45 changer transitions 0/163 dead transitions. [2024-06-27 22:51:28,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 163 transitions, 1617 flow [2024-06-27 22:51:28,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:51:28,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:51:28,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2024-06-27 22:51:28,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-06-27 22:51:28,584 INFO L175 Difference]: Start difference. First operand has 89 places, 117 transitions, 1144 flow. Second operand 6 states and 189 transitions. [2024-06-27 22:51:28,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 163 transitions, 1617 flow [2024-06-27 22:51:28,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 163 transitions, 1544 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 22:51:28,659 INFO L231 Difference]: Finished difference. Result has 90 places, 118 transitions, 1189 flow [2024-06-27 22:51:28,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1189, PETRI_PLACES=90, PETRI_TRANSITIONS=118} [2024-06-27 22:51:28,662 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 36 predicate places. [2024-06-27 22:51:28,662 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 118 transitions, 1189 flow [2024-06-27 22:51:28,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:28,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:28,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:28,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:51:28,663 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:28,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:28,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1160062230, now seen corresponding path program 3 times [2024-06-27 22:51:28,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:28,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694956639] [2024-06-27 22:51:28,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:28,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:28,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:29,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:29,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:29,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694956639] [2024-06-27 22:51:29,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694956639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:29,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:29,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:51:29,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254423888] [2024-06-27 22:51:29,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:29,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:51:29,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:29,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:51:29,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:51:29,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 48 [2024-06-27 22:51:29,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 118 transitions, 1189 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:29,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:29,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 48 [2024-06-27 22:51:29,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:31,103 INFO L124 PetriNetUnfolderBase]: 2887/5545 cut-off events. [2024-06-27 22:51:31,103 INFO L125 PetriNetUnfolderBase]: For 21796/21800 co-relation queries the response was YES. [2024-06-27 22:51:31,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20351 conditions, 5545 events. 2887/5545 cut-off events. For 21796/21800 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 45260 event pairs, 725 based on Foata normal form. 24/5411 useless extension candidates. Maximal degree in co-relation 20317. Up to 1873 conditions per place. [2024-06-27 22:51:31,219 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 114 selfloop transitions, 55 changer transitions 0/183 dead transitions. [2024-06-27 22:51:31,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 183 transitions, 1836 flow [2024-06-27 22:51:31,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:51:31,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:51:31,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 221 transitions. [2024-06-27 22:51:31,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6577380952380952 [2024-06-27 22:51:31,221 INFO L175 Difference]: Start difference. First operand has 90 places, 118 transitions, 1189 flow. Second operand 7 states and 221 transitions. [2024-06-27 22:51:31,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 183 transitions, 1836 flow [2024-06-27 22:51:31,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 183 transitions, 1726 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 22:51:31,301 INFO L231 Difference]: Finished difference. Result has 93 places, 127 transitions, 1346 flow [2024-06-27 22:51:31,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1069, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1346, PETRI_PLACES=93, PETRI_TRANSITIONS=127} [2024-06-27 22:51:31,302 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 39 predicate places. [2024-06-27 22:51:31,302 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 127 transitions, 1346 flow [2024-06-27 22:51:31,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:31,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:31,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:31,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:51:31,306 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:31,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:31,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1859539144, now seen corresponding path program 1 times [2024-06-27 22:51:31,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:31,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990178713] [2024-06-27 22:51:31,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:31,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:32,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:32,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:32,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990178713] [2024-06-27 22:51:32,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990178713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:32,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:32,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:51:32,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380860787] [2024-06-27 22:51:32,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:32,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:51:32,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:32,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:51:32,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:51:32,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 48 [2024-06-27 22:51:32,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 127 transitions, 1346 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:32,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:32,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 48 [2024-06-27 22:51:32,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:33,352 INFO L124 PetriNetUnfolderBase]: 3292/6265 cut-off events. [2024-06-27 22:51:33,352 INFO L125 PetriNetUnfolderBase]: For 28326/28330 co-relation queries the response was YES. [2024-06-27 22:51:33,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24077 conditions, 6265 events. 3292/6265 cut-off events. For 28326/28330 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 52074 event pairs, 1190 based on Foata normal form. 27/6094 useless extension candidates. Maximal degree in co-relation 24041. Up to 4055 conditions per place. [2024-06-27 22:51:33,411 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 110 selfloop transitions, 41 changer transitions 0/165 dead transitions. [2024-06-27 22:51:33,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 165 transitions, 1851 flow [2024-06-27 22:51:33,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:51:33,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:51:33,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-06-27 22:51:33,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-06-27 22:51:33,414 INFO L175 Difference]: Start difference. First operand has 93 places, 127 transitions, 1346 flow. Second operand 5 states and 155 transitions. [2024-06-27 22:51:33,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 165 transitions, 1851 flow [2024-06-27 22:51:33,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 165 transitions, 1746 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-27 22:51:33,538 INFO L231 Difference]: Finished difference. Result has 96 places, 131 transitions, 1426 flow [2024-06-27 22:51:33,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1243, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1426, PETRI_PLACES=96, PETRI_TRANSITIONS=131} [2024-06-27 22:51:33,540 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 42 predicate places. [2024-06-27 22:51:33,540 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 131 transitions, 1426 flow [2024-06-27 22:51:33,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:33,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:33,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:33,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:51:33,541 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:33,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:33,542 INFO L85 PathProgramCache]: Analyzing trace with hash -8795720, now seen corresponding path program 2 times [2024-06-27 22:51:33,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:33,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212244619] [2024-06-27 22:51:33,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:33,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:34,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:34,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:34,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212244619] [2024-06-27 22:51:34,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212244619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:34,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:34,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:51:34,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817463735] [2024-06-27 22:51:34,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:34,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:51:34,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:34,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:51:34,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:51:34,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 22:51:34,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 131 transitions, 1426 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:34,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:34,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 22:51:34,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:35,295 INFO L124 PetriNetUnfolderBase]: 3267/6269 cut-off events. [2024-06-27 22:51:35,295 INFO L125 PetriNetUnfolderBase]: For 28944/28948 co-relation queries the response was YES. [2024-06-27 22:51:35,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24136 conditions, 6269 events. 3267/6269 cut-off events. For 28944/28948 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 52217 event pairs, 1589 based on Foata normal form. 3/6076 useless extension candidates. Maximal degree in co-relation 24096. Up to 4893 conditions per place. [2024-06-27 22:51:35,346 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 123 selfloop transitions, 36 changer transitions 0/172 dead transitions. [2024-06-27 22:51:35,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 172 transitions, 1989 flow [2024-06-27 22:51:35,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:51:35,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:51:35,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-27 22:51:35,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5565476190476191 [2024-06-27 22:51:35,348 INFO L175 Difference]: Start difference. First operand has 96 places, 131 transitions, 1426 flow. Second operand 7 states and 187 transitions. [2024-06-27 22:51:35,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 172 transitions, 1989 flow [2024-06-27 22:51:35,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 172 transitions, 1922 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-27 22:51:35,458 INFO L231 Difference]: Finished difference. Result has 102 places, 141 transitions, 1646 flow [2024-06-27 22:51:35,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1646, PETRI_PLACES=102, PETRI_TRANSITIONS=141} [2024-06-27 22:51:35,458 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 48 predicate places. [2024-06-27 22:51:35,459 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 141 transitions, 1646 flow [2024-06-27 22:51:35,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:35,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:35,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:35,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:51:35,460 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:35,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:35,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1621537813, now seen corresponding path program 1 times [2024-06-27 22:51:35,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:35,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805848706] [2024-06-27 22:51:35,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:35,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:36,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:36,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:36,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805848706] [2024-06-27 22:51:36,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805848706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:36,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:36,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:51:36,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712828232] [2024-06-27 22:51:36,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:36,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:51:36,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:36,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:51:36,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:51:36,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 48 [2024-06-27 22:51:36,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 141 transitions, 1646 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:36,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:36,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 48 [2024-06-27 22:51:36,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:37,530 INFO L124 PetriNetUnfolderBase]: 3287/6357 cut-off events. [2024-06-27 22:51:37,530 INFO L125 PetriNetUnfolderBase]: For 28861/28865 co-relation queries the response was YES. [2024-06-27 22:51:37,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24205 conditions, 6357 events. 3287/6357 cut-off events. For 28861/28865 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 53566 event pairs, 1459 based on Foata normal form. 6/6126 useless extension candidates. Maximal degree in co-relation 24163. Up to 4527 conditions per place. [2024-06-27 22:51:37,584 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 142 selfloop transitions, 45 changer transitions 0/201 dead transitions. [2024-06-27 22:51:37,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 201 transitions, 2339 flow [2024-06-27 22:51:37,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:51:37,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:51:37,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 193 transitions. [2024-06-27 22:51:37,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6701388888888888 [2024-06-27 22:51:37,588 INFO L175 Difference]: Start difference. First operand has 102 places, 141 transitions, 1646 flow. Second operand 6 states and 193 transitions. [2024-06-27 22:51:37,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 201 transitions, 2339 flow [2024-06-27 22:51:37,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 201 transitions, 2275 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-27 22:51:37,711 INFO L231 Difference]: Finished difference. Result has 106 places, 148 transitions, 1829 flow [2024-06-27 22:51:37,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1829, PETRI_PLACES=106, PETRI_TRANSITIONS=148} [2024-06-27 22:51:37,714 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 52 predicate places. [2024-06-27 22:51:37,715 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 148 transitions, 1829 flow [2024-06-27 22:51:37,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:37,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:37,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:37,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:51:37,716 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:37,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:37,716 INFO L85 PathProgramCache]: Analyzing trace with hash 677882745, now seen corresponding path program 1 times [2024-06-27 22:51:37,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:37,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403012552] [2024-06-27 22:51:37,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:37,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:38,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:38,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:38,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403012552] [2024-06-27 22:51:38,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403012552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:38,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:38,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:51:38,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067749772] [2024-06-27 22:51:38,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:38,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:51:38,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:38,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:51:38,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:51:38,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 22:51:38,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 148 transitions, 1829 flow. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:38,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:38,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 22:51:38,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:40,405 INFO L124 PetriNetUnfolderBase]: 3318/6302 cut-off events. [2024-06-27 22:51:40,406 INFO L125 PetriNetUnfolderBase]: For 33102/33106 co-relation queries the response was YES. [2024-06-27 22:51:40,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25004 conditions, 6302 events. 3318/6302 cut-off events. For 33102/33106 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 51927 event pairs, 1453 based on Foata normal form. 8/6114 useless extension candidates. Maximal degree in co-relation 24959. Up to 4554 conditions per place. [2024-06-27 22:51:40,457 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 106 selfloop transitions, 74 changer transitions 0/193 dead transitions. [2024-06-27 22:51:40,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 193 transitions, 2357 flow [2024-06-27 22:51:40,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:51:40,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:51:40,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-06-27 22:51:40,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5439814814814815 [2024-06-27 22:51:40,460 INFO L175 Difference]: Start difference. First operand has 106 places, 148 transitions, 1829 flow. Second operand 9 states and 235 transitions. [2024-06-27 22:51:40,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 193 transitions, 2357 flow [2024-06-27 22:51:40,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 193 transitions, 2325 flow, removed 16 selfloop flow, removed 0 redundant places. [2024-06-27 22:51:40,591 INFO L231 Difference]: Finished difference. Result has 115 places, 150 transitions, 1989 flow [2024-06-27 22:51:40,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1797, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1989, PETRI_PLACES=115, PETRI_TRANSITIONS=150} [2024-06-27 22:51:40,593 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 61 predicate places. [2024-06-27 22:51:40,593 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 150 transitions, 1989 flow [2024-06-27 22:51:40,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:40,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:40,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:40,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:51:40,594 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:40,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:40,594 INFO L85 PathProgramCache]: Analyzing trace with hash 864459991, now seen corresponding path program 2 times [2024-06-27 22:51:40,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:40,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262396405] [2024-06-27 22:51:40,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:40,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:41,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:41,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:41,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262396405] [2024-06-27 22:51:41,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262396405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:41,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:41,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:51:41,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811271539] [2024-06-27 22:51:41,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:41,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:51:41,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:41,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:51:41,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:51:41,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 22:51:41,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 150 transitions, 1989 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:41,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:41,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 22:51:41,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:42,508 INFO L124 PetriNetUnfolderBase]: 3309/6337 cut-off events. [2024-06-27 22:51:42,508 INFO L125 PetriNetUnfolderBase]: For 33307/33311 co-relation queries the response was YES. [2024-06-27 22:51:42,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25375 conditions, 6337 events. 3309/6337 cut-off events. For 33307/33311 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 52857 event pairs, 1635 based on Foata normal form. 4/6142 useless extension candidates. Maximal degree in co-relation 25326. Up to 5011 conditions per place. [2024-06-27 22:51:42,554 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 129 selfloop transitions, 38 changer transitions 0/180 dead transitions. [2024-06-27 22:51:42,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 180 transitions, 2481 flow [2024-06-27 22:51:42,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:51:42,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:51:42,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2024-06-27 22:51:42,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-06-27 22:51:42,556 INFO L175 Difference]: Start difference. First operand has 115 places, 150 transitions, 1989 flow. Second operand 6 states and 164 transitions. [2024-06-27 22:51:42,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 180 transitions, 2481 flow [2024-06-27 22:51:42,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 180 transitions, 2376 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-27 22:51:42,685 INFO L231 Difference]: Finished difference. Result has 119 places, 155 transitions, 2098 flow [2024-06-27 22:51:42,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1889, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2098, PETRI_PLACES=119, PETRI_TRANSITIONS=155} [2024-06-27 22:51:42,685 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 65 predicate places. [2024-06-27 22:51:42,686 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 155 transitions, 2098 flow [2024-06-27 22:51:42,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:42,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:42,686 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] [2024-06-27 22:51:42,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:51:42,686 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:42,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:42,686 INFO L85 PathProgramCache]: Analyzing trace with hash 793205582, now seen corresponding path program 1 times [2024-06-27 22:51:42,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:42,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355303287] [2024-06-27 22:51:42,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:42,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:43,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:43,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:43,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355303287] [2024-06-27 22:51:43,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355303287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:43,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:43,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:51:43,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788291263] [2024-06-27 22:51:43,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:43,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:51:43,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:43,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:51:43,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:51:43,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 22:51:43,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 155 transitions, 2098 flow. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:43,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:43,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 22:51:43,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:44,939 INFO L124 PetriNetUnfolderBase]: 3337/6347 cut-off events. [2024-06-27 22:51:44,940 INFO L125 PetriNetUnfolderBase]: For 34403/34407 co-relation queries the response was YES. [2024-06-27 22:51:44,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25541 conditions, 6347 events. 3337/6347 cut-off events. For 34403/34407 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 52733 event pairs, 1570 based on Foata normal form. 4/6148 useless extension candidates. Maximal degree in co-relation 25489. Up to 4778 conditions per place. [2024-06-27 22:51:44,995 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 141 selfloop transitions, 41 changer transitions 0/195 dead transitions. [2024-06-27 22:51:44,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 195 transitions, 2624 flow [2024-06-27 22:51:44,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:51:44,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:51:44,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-06-27 22:51:44,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5684523809523809 [2024-06-27 22:51:44,997 INFO L175 Difference]: Start difference. First operand has 119 places, 155 transitions, 2098 flow. Second operand 7 states and 191 transitions. [2024-06-27 22:51:44,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 195 transitions, 2624 flow [2024-06-27 22:51:45,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 195 transitions, 2566 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 22:51:45,106 INFO L231 Difference]: Finished difference. Result has 124 places, 159 transitions, 2201 flow [2024-06-27 22:51:45,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2040, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2201, PETRI_PLACES=124, PETRI_TRANSITIONS=159} [2024-06-27 22:51:45,107 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 70 predicate places. [2024-06-27 22:51:45,107 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 159 transitions, 2201 flow [2024-06-27 22:51:45,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:45,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:45,108 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] [2024-06-27 22:51:45,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:51:45,108 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:45,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:45,109 INFO L85 PathProgramCache]: Analyzing trace with hash -725172571, now seen corresponding path program 1 times [2024-06-27 22:51:45,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:45,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539994276] [2024-06-27 22:51:45,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:45,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:45,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:45,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:45,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539994276] [2024-06-27 22:51:45,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539994276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:45,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:45,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:51:45,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185742711] [2024-06-27 22:51:45,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:45,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:51:45,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:45,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:51:45,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:51:45,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:51:45,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 159 transitions, 2201 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:45,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:45,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:51:45,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:47,034 INFO L124 PetriNetUnfolderBase]: 8138/13462 cut-off events. [2024-06-27 22:51:47,034 INFO L125 PetriNetUnfolderBase]: For 77088/77092 co-relation queries the response was YES. [2024-06-27 22:51:47,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49091 conditions, 13462 events. 8138/13462 cut-off events. For 77088/77092 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 100893 event pairs, 1205 based on Foata normal form. 457/13569 useless extension candidates. Maximal degree in co-relation 49038. Up to 6312 conditions per place. [2024-06-27 22:51:47,112 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 249 selfloop transitions, 5 changer transitions 1/266 dead transitions. [2024-06-27 22:51:47,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 266 transitions, 4078 flow [2024-06-27 22:51:47,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:51:47,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:51:47,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-06-27 22:51:47,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2024-06-27 22:51:47,114 INFO L175 Difference]: Start difference. First operand has 124 places, 159 transitions, 2201 flow. Second operand 4 states and 118 transitions. [2024-06-27 22:51:47,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 266 transitions, 4078 flow [2024-06-27 22:51:47,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 266 transitions, 3801 flow, removed 75 selfloop flow, removed 9 redundant places. [2024-06-27 22:51:47,283 INFO L231 Difference]: Finished difference. Result has 120 places, 144 transitions, 1789 flow [2024-06-27 22:51:47,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1755, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1789, PETRI_PLACES=120, PETRI_TRANSITIONS=144} [2024-06-27 22:51:47,284 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 66 predicate places. [2024-06-27 22:51:47,284 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 144 transitions, 1789 flow [2024-06-27 22:51:47,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:47,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:47,285 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] [2024-06-27 22:51:47,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:51:47,285 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:47,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:47,285 INFO L85 PathProgramCache]: Analyzing trace with hash -714514852, now seen corresponding path program 1 times [2024-06-27 22:51:47,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:47,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211249588] [2024-06-27 22:51:47,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:47,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:48,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:48,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:48,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211249588] [2024-06-27 22:51:48,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211249588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:48,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:48,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:51:48,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568977391] [2024-06-27 22:51:48,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:48,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:51:48,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:48,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:51:48,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:51:48,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 22:51:48,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 144 transitions, 1789 flow. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:48,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:48,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 22:51:48,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:50,718 INFO L124 PetriNetUnfolderBase]: 5517/10308 cut-off events. [2024-06-27 22:51:50,718 INFO L125 PetriNetUnfolderBase]: For 48560/48608 co-relation queries the response was YES. [2024-06-27 22:51:50,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38664 conditions, 10308 events. 5517/10308 cut-off events. For 48560/48608 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 87706 event pairs, 2290 based on Foata normal form. 33/9659 useless extension candidates. Maximal degree in co-relation 38613. Up to 6328 conditions per place. [2024-06-27 22:51:50,804 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 135 selfloop transitions, 90 changer transitions 0/241 dead transitions. [2024-06-27 22:51:50,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 241 transitions, 3179 flow [2024-06-27 22:51:50,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:51:50,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:51:50,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 223 transitions. [2024-06-27 22:51:50,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5807291666666666 [2024-06-27 22:51:50,806 INFO L175 Difference]: Start difference. First operand has 120 places, 144 transitions, 1789 flow. Second operand 8 states and 223 transitions. [2024-06-27 22:51:50,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 241 transitions, 3179 flow [2024-06-27 22:51:50,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 241 transitions, 3151 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-27 22:51:50,930 INFO L231 Difference]: Finished difference. Result has 128 places, 191 transitions, 2755 flow [2024-06-27 22:51:50,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1781, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2755, PETRI_PLACES=128, PETRI_TRANSITIONS=191} [2024-06-27 22:51:50,930 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 74 predicate places. [2024-06-27 22:51:50,930 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 191 transitions, 2755 flow [2024-06-27 22:51:50,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:50,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:50,931 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] [2024-06-27 22:51:50,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:51:50,931 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:50,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:50,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1921638454, now seen corresponding path program 2 times [2024-06-27 22:51:50,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:50,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217916152] [2024-06-27 22:51:50,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:50,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:51,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:51,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:51,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217916152] [2024-06-27 22:51:51,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217916152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:51,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:51,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:51:51,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333988786] [2024-06-27 22:51:51,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:51,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:51:51,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:51,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:51:51,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:51:51,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 48 [2024-06-27 22:51:51,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 191 transitions, 2755 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:51,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:51,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 48 [2024-06-27 22:51:51,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:53,680 INFO L124 PetriNetUnfolderBase]: 6333/11948 cut-off events. [2024-06-27 22:51:53,680 INFO L125 PetriNetUnfolderBase]: For 65444/65482 co-relation queries the response was YES. [2024-06-27 22:51:53,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44632 conditions, 11948 events. 6333/11948 cut-off events. For 65444/65482 co-relation queries the response was YES. Maximal size of possible extension queue 822. Compared 105007 event pairs, 2923 based on Foata normal form. 45/11136 useless extension candidates. Maximal degree in co-relation 44578. Up to 5545 conditions per place. [2024-06-27 22:51:53,778 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 129 selfloop transitions, 93 changer transitions 0/239 dead transitions. [2024-06-27 22:51:53,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 239 transitions, 3441 flow [2024-06-27 22:51:53,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:51:53,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:51:53,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2024-06-27 22:51:53,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6631944444444444 [2024-06-27 22:51:53,780 INFO L175 Difference]: Start difference. First operand has 128 places, 191 transitions, 2755 flow. Second operand 6 states and 191 transitions. [2024-06-27 22:51:53,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 239 transitions, 3441 flow [2024-06-27 22:51:53,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 239 transitions, 3367 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-06-27 22:51:53,933 INFO L231 Difference]: Finished difference. Result has 133 places, 192 transitions, 2946 flow [2024-06-27 22:51:53,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2685, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2946, PETRI_PLACES=133, PETRI_TRANSITIONS=192} [2024-06-27 22:51:53,933 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 79 predicate places. [2024-06-27 22:51:53,933 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 192 transitions, 2946 flow [2024-06-27 22:51:53,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:53,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:53,933 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] [2024-06-27 22:51:53,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:51:53,934 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:53,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:53,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1861681104, now seen corresponding path program 3 times [2024-06-27 22:51:53,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:53,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062157697] [2024-06-27 22:51:53,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:53,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:54,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:54,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:54,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062157697] [2024-06-27 22:51:54,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062157697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:54,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:54,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:51:54,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763839513] [2024-06-27 22:51:54,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:54,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:51:54,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:54,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:51:54,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:51:54,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 48 [2024-06-27 22:51:54,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 192 transitions, 2946 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:54,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:54,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 48 [2024-06-27 22:51:54,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:56,820 INFO L124 PetriNetUnfolderBase]: 7062/13380 cut-off events. [2024-06-27 22:51:56,820 INFO L125 PetriNetUnfolderBase]: For 76988/77052 co-relation queries the response was YES. [2024-06-27 22:51:56,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49954 conditions, 13380 events. 7062/13380 cut-off events. For 76988/77052 co-relation queries the response was YES. Maximal size of possible extension queue 976. Compared 120365 event pairs, 3287 based on Foata normal form. 30/12468 useless extension candidates. Maximal degree in co-relation 49898. Up to 6262 conditions per place. [2024-06-27 22:51:56,952 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 131 selfloop transitions, 104 changer transitions 0/252 dead transitions. [2024-06-27 22:51:56,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 252 transitions, 3747 flow [2024-06-27 22:51:56,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:51:56,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:51:56,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 222 transitions. [2024-06-27 22:51:56,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6607142857142857 [2024-06-27 22:51:56,954 INFO L175 Difference]: Start difference. First operand has 133 places, 192 transitions, 2946 flow. Second operand 7 states and 222 transitions. [2024-06-27 22:51:56,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 252 transitions, 3747 flow [2024-06-27 22:51:57,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 252 transitions, 3555 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-27 22:51:57,146 INFO L231 Difference]: Finished difference. Result has 136 places, 195 transitions, 3039 flow [2024-06-27 22:51:57,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2762, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3039, PETRI_PLACES=136, PETRI_TRANSITIONS=195} [2024-06-27 22:51:57,147 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 82 predicate places. [2024-06-27 22:51:57,147 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 195 transitions, 3039 flow [2024-06-27 22:51:57,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:57,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:57,147 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] [2024-06-27 22:51:57,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:51:57,148 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:57,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:57,148 INFO L85 PathProgramCache]: Analyzing trace with hash 563863324, now seen corresponding path program 4 times [2024-06-27 22:51:57,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:57,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681799218] [2024-06-27 22:51:57,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:57,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:57,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:57,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:57,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681799218] [2024-06-27 22:51:57,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681799218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:57,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:57,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:51:57,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738254238] [2024-06-27 22:51:57,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:57,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:51:57,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:57,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:51:57,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:51:57,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 22:51:57,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 195 transitions, 3039 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) [2024-06-27 22:51:57,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:57,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 22:51:57,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:59,910 INFO L124 PetriNetUnfolderBase]: 7163/13529 cut-off events. [2024-06-27 22:51:59,911 INFO L125 PetriNetUnfolderBase]: For 81519/81598 co-relation queries the response was YES. [2024-06-27 22:51:59,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52121 conditions, 13529 events. 7163/13529 cut-off events. For 81519/81598 co-relation queries the response was YES. Maximal size of possible extension queue 981. Compared 122275 event pairs, 3531 based on Foata normal form. 4/12472 useless extension candidates. Maximal degree in co-relation 52064. Up to 9567 conditions per place. [2024-06-27 22:52:00,021 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 137 selfloop transitions, 78 changer transitions 0/231 dead transitions. [2024-06-27 22:52:00,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 231 transitions, 3672 flow [2024-06-27 22:52:00,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:52:00,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:52:00,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 150 transitions. [2024-06-27 22:52:00,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-27 22:52:00,022 INFO L175 Difference]: Start difference. First operand has 136 places, 195 transitions, 3039 flow. Second operand 5 states and 150 transitions. [2024-06-27 22:52:00,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 231 transitions, 3672 flow [2024-06-27 22:52:00,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 231 transitions, 3516 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-27 22:52:00,195 INFO L231 Difference]: Finished difference. Result has 139 places, 201 transitions, 3233 flow [2024-06-27 22:52:00,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2883, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3233, PETRI_PLACES=139, PETRI_TRANSITIONS=201} [2024-06-27 22:52:00,196 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 85 predicate places. [2024-06-27 22:52:00,196 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 201 transitions, 3233 flow [2024-06-27 22:52:00,196 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) [2024-06-27 22:52:00,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:00,197 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] [2024-06-27 22:52:00,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:52:00,197 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:52:00,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:00,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1429809897, now seen corresponding path program 1 times [2024-06-27 22:52:00,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:00,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287395860] [2024-06-27 22:52:00,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:00,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:01,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:01,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:01,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287395860] [2024-06-27 22:52:01,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287395860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:01,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:01,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:52:01,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411951759] [2024-06-27 22:52:01,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:01,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:52:01,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:01,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:52:01,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:52:01,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 22:52:01,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 201 transitions, 3233 flow. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:01,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:01,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 22:52:01,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:03,854 INFO L124 PetriNetUnfolderBase]: 8003/15067 cut-off events. [2024-06-27 22:52:03,854 INFO L125 PetriNetUnfolderBase]: For 91421/91492 co-relation queries the response was YES. [2024-06-27 22:52:03,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58245 conditions, 15067 events. 8003/15067 cut-off events. For 91421/91492 co-relation queries the response was YES. Maximal size of possible extension queue 1096. Compared 138202 event pairs, 4035 based on Foata normal form. 18/13941 useless extension candidates. Maximal degree in co-relation 58183. Up to 8993 conditions per place. [2024-06-27 22:52:03,993 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 199 selfloop transitions, 62 changer transitions 0/277 dead transitions. [2024-06-27 22:52:03,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 277 transitions, 4245 flow [2024-06-27 22:52:03,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:52:03,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:52:03,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 255 transitions. [2024-06-27 22:52:03,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5902777777777778 [2024-06-27 22:52:03,996 INFO L175 Difference]: Start difference. First operand has 139 places, 201 transitions, 3233 flow. Second operand 9 states and 255 transitions. [2024-06-27 22:52:03,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 277 transitions, 4245 flow [2024-06-27 22:52:04,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 277 transitions, 4162 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-06-27 22:52:04,249 INFO L231 Difference]: Finished difference. Result has 149 places, 207 transitions, 3457 flow [2024-06-27 22:52:04,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3167, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3457, PETRI_PLACES=149, PETRI_TRANSITIONS=207} [2024-06-27 22:52:04,250 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 95 predicate places. [2024-06-27 22:52:04,250 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 207 transitions, 3457 flow [2024-06-27 22:52:04,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:04,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:04,250 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] [2024-06-27 22:52:04,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:52:04,250 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:52:04,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:04,251 INFO L85 PathProgramCache]: Analyzing trace with hash 514804585, now seen corresponding path program 2 times [2024-06-27 22:52:04,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:04,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050985327] [2024-06-27 22:52:04,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:04,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:06,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:06,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:06,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050985327] [2024-06-27 22:52:06,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050985327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:06,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:06,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:52:06,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581519937] [2024-06-27 22:52:06,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:06,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:52:06,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:06,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:52:06,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:52:06,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 48 [2024-06-27 22:52:06,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 207 transitions, 3457 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:06,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:06,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 48 [2024-06-27 22:52:06,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:09,521 INFO L124 PetriNetUnfolderBase]: 10133/19404 cut-off events. [2024-06-27 22:52:09,522 INFO L125 PetriNetUnfolderBase]: For 116501/116574 co-relation queries the response was YES. [2024-06-27 22:52:09,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71216 conditions, 19404 events. 10133/19404 cut-off events. For 116501/116574 co-relation queries the response was YES. Maximal size of possible extension queue 1446. Compared 188939 event pairs, 5006 based on Foata normal form. 19/17887 useless extension candidates. Maximal degree in co-relation 71150. Up to 6884 conditions per place. [2024-06-27 22:52:10,002 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 212 selfloop transitions, 77 changer transitions 0/306 dead transitions. [2024-06-27 22:52:10,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 306 transitions, 4626 flow [2024-06-27 22:52:10,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:52:10,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:52:10,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 309 transitions. [2024-06-27 22:52:10,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.64375 [2024-06-27 22:52:10,005 INFO L175 Difference]: Start difference. First operand has 149 places, 207 transitions, 3457 flow. Second operand 10 states and 309 transitions. [2024-06-27 22:52:10,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 306 transitions, 4626 flow [2024-06-27 22:52:10,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 306 transitions, 4466 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-27 22:52:10,301 INFO L231 Difference]: Finished difference. Result has 153 places, 208 transitions, 3480 flow [2024-06-27 22:52:10,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3297, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3480, PETRI_PLACES=153, PETRI_TRANSITIONS=208} [2024-06-27 22:52:10,301 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 99 predicate places. [2024-06-27 22:52:10,301 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 208 transitions, 3480 flow [2024-06-27 22:52:10,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:10,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:10,302 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] [2024-06-27 22:52:10,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:52:10,302 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:52:10,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:10,302 INFO L85 PathProgramCache]: Analyzing trace with hash -376900517, now seen corresponding path program 3 times [2024-06-27 22:52:10,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:10,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546067124] [2024-06-27 22:52:10,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:10,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:11,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:11,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:11,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546067124] [2024-06-27 22:52:11,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546067124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:11,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:11,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:52:11,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726532715] [2024-06-27 22:52:11,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:11,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:52:11,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:11,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:52:11,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:52:11,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 48 [2024-06-27 22:52:11,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 208 transitions, 3480 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:11,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:11,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 48 [2024-06-27 22:52:11,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:14,777 INFO L124 PetriNetUnfolderBase]: 9929/19012 cut-off events. [2024-06-27 22:52:14,777 INFO L125 PetriNetUnfolderBase]: For 114921/115043 co-relation queries the response was YES. [2024-06-27 22:52:14,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69791 conditions, 19012 events. 9929/19012 cut-off events. For 114921/115043 co-relation queries the response was YES. Maximal size of possible extension queue 1438. Compared 185263 event pairs, 5689 based on Foata normal form. 19/17394 useless extension candidates. Maximal degree in co-relation 69727. Up to 12593 conditions per place. [2024-06-27 22:52:14,941 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 174 selfloop transitions, 71 changer transitions 0/262 dead transitions. [2024-06-27 22:52:14,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 262 transitions, 4219 flow [2024-06-27 22:52:14,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:52:14,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:52:14,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 214 transitions. [2024-06-27 22:52:14,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6369047619047619 [2024-06-27 22:52:14,943 INFO L175 Difference]: Start difference. First operand has 153 places, 208 transitions, 3480 flow. Second operand 7 states and 214 transitions. [2024-06-27 22:52:14,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 262 transitions, 4219 flow [2024-06-27 22:52:15,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 262 transitions, 4141 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 22:52:15,240 INFO L231 Difference]: Finished difference. Result has 155 places, 208 transitions, 3547 flow [2024-06-27 22:52:15,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3402, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3547, PETRI_PLACES=155, PETRI_TRANSITIONS=208} [2024-06-27 22:52:15,241 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 101 predicate places. [2024-06-27 22:52:15,241 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 208 transitions, 3547 flow [2024-06-27 22:52:15,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:15,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:15,241 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] [2024-06-27 22:52:15,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:52:15,241 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:52:15,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:15,353 INFO L85 PathProgramCache]: Analyzing trace with hash 958825743, now seen corresponding path program 4 times [2024-06-27 22:52:15,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:15,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917209659] [2024-06-27 22:52:15,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:15,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:17,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:17,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:17,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917209659] [2024-06-27 22:52:17,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917209659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:17,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:17,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:52:17,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997342789] [2024-06-27 22:52:17,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:17,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:52:17,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:17,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:52:17,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:52:17,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 22:52:17,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 208 transitions, 3547 flow. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:17,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:17,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 22:52:17,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:20,749 INFO L124 PetriNetUnfolderBase]: 10132/19622 cut-off events. [2024-06-27 22:52:20,749 INFO L125 PetriNetUnfolderBase]: For 119643/119753 co-relation queries the response was YES. [2024-06-27 22:52:20,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71378 conditions, 19622 events. 10132/19622 cut-off events. For 119643/119753 co-relation queries the response was YES. Maximal size of possible extension queue 1466. Compared 194000 event pairs, 5631 based on Foata normal form. 22/17939 useless extension candidates. Maximal degree in co-relation 71313. Up to 11670 conditions per place. [2024-06-27 22:52:20,964 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 154 selfloop transitions, 102 changer transitions 0/272 dead transitions. [2024-06-27 22:52:20,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 272 transitions, 4427 flow [2024-06-27 22:52:20,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:52:20,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:52:20,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 249 transitions. [2024-06-27 22:52:20,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5763888888888888 [2024-06-27 22:52:20,965 INFO L175 Difference]: Start difference. First operand has 155 places, 208 transitions, 3547 flow. Second operand 9 states and 249 transitions. [2024-06-27 22:52:20,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 272 transitions, 4427 flow [2024-06-27 22:52:21,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 272 transitions, 4286 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 22:52:21,435 INFO L231 Difference]: Finished difference. Result has 161 places, 217 transitions, 3772 flow [2024-06-27 22:52:21,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3406, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3772, PETRI_PLACES=161, PETRI_TRANSITIONS=217} [2024-06-27 22:52:21,436 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 107 predicate places. [2024-06-27 22:52:21,436 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 217 transitions, 3772 flow [2024-06-27 22:52:21,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:21,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:21,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:21,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:52:21,437 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:52:21,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:21,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1921618693, now seen corresponding path program 1 times [2024-06-27 22:52:21,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:21,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459768846] [2024-06-27 22:52:21,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:21,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:22,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:22,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:22,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459768846] [2024-06-27 22:52:22,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459768846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:22,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:22,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:52:22,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816779034] [2024-06-27 22:52:22,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:22,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:52:22,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:22,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:52:22,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:52:22,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 22:52:22,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 217 transitions, 3772 flow. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:22,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:22,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 22:52:22,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:26,393 INFO L124 PetriNetUnfolderBase]: 10159/19669 cut-off events. [2024-06-27 22:52:26,393 INFO L125 PetriNetUnfolderBase]: For 133878/133986 co-relation queries the response was YES. [2024-06-27 22:52:26,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73771 conditions, 19669 events. 10159/19669 cut-off events. For 133878/133986 co-relation queries the response was YES. Maximal size of possible extension queue 1457. Compared 193999 event pairs, 5831 based on Foata normal form. 16/18005 useless extension candidates. Maximal degree in co-relation 73702. Up to 13575 conditions per place. [2024-06-27 22:52:26,622 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 179 selfloop transitions, 65 changer transitions 0/260 dead transitions. [2024-06-27 22:52:26,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 260 transitions, 4441 flow [2024-06-27 22:52:26,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:52:26,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:52:26,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-27 22:52:26,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5442708333333334 [2024-06-27 22:52:26,624 INFO L175 Difference]: Start difference. First operand has 161 places, 217 transitions, 3772 flow. Second operand 8 states and 209 transitions. [2024-06-27 22:52:26,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 260 transitions, 4441 flow [2024-06-27 22:52:27,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 260 transitions, 4186 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-27 22:52:27,046 INFO L231 Difference]: Finished difference. Result has 163 places, 217 transitions, 3697 flow [2024-06-27 22:52:27,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3517, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3697, PETRI_PLACES=163, PETRI_TRANSITIONS=217} [2024-06-27 22:52:27,047 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 109 predicate places. [2024-06-27 22:52:27,047 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 217 transitions, 3697 flow [2024-06-27 22:52:27,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:27,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:27,048 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] [2024-06-27 22:52:27,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:52:27,048 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:52:27,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:27,049 INFO L85 PathProgramCache]: Analyzing trace with hash -341165611, now seen corresponding path program 2 times [2024-06-27 22:52:27,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:27,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833193317] [2024-06-27 22:52:27,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:27,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:28,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:28,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:28,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833193317] [2024-06-27 22:52:28,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833193317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:28,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:28,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:52:28,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722249139] [2024-06-27 22:52:28,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:28,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:52:28,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:28,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:52:28,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:52:28,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 48 [2024-06-27 22:52:28,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 217 transitions, 3697 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:28,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:28,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 48 [2024-06-27 22:52:28,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:32,418 INFO L124 PetriNetUnfolderBase]: 10765/20997 cut-off events. [2024-06-27 22:52:32,419 INFO L125 PetriNetUnfolderBase]: For 144835/144888 co-relation queries the response was YES. [2024-06-27 22:52:32,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76549 conditions, 20997 events. 10765/20997 cut-off events. For 144835/144888 co-relation queries the response was YES. Maximal size of possible extension queue 1499. Compared 209750 event pairs, 4728 based on Foata normal form. 63/19440 useless extension candidates. Maximal degree in co-relation 76480. Up to 5510 conditions per place. [2024-06-27 22:52:32,685 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 167 selfloop transitions, 110 changer transitions 0/294 dead transitions. [2024-06-27 22:52:32,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 294 transitions, 4735 flow [2024-06-27 22:52:32,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:52:32,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:52:32,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 257 transitions. [2024-06-27 22:52:32,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6692708333333334 [2024-06-27 22:52:32,687 INFO L175 Difference]: Start difference. First operand has 163 places, 217 transitions, 3697 flow. Second operand 8 states and 257 transitions. [2024-06-27 22:52:32,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 294 transitions, 4735 flow [2024-06-27 22:52:33,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 294 transitions, 4623 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 22:52:33,135 INFO L231 Difference]: Finished difference. Result has 167 places, 219 transitions, 3910 flow [2024-06-27 22:52:33,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3585, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3910, PETRI_PLACES=167, PETRI_TRANSITIONS=219} [2024-06-27 22:52:33,136 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 113 predicate places. [2024-06-27 22:52:33,136 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 219 transitions, 3910 flow [2024-06-27 22:52:33,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:33,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:33,137 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] [2024-06-27 22:52:33,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:52:33,137 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:52:33,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:33,138 INFO L85 PathProgramCache]: Analyzing trace with hash 101718907, now seen corresponding path program 3 times [2024-06-27 22:52:33,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:33,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937058298] [2024-06-27 22:52:33,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:33,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:34,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:34,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:34,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937058298] [2024-06-27 22:52:34,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937058298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:34,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:34,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:52:34,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652792570] [2024-06-27 22:52:34,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:34,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:52:34,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:34,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:52:34,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:52:34,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 22:52:34,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 219 transitions, 3910 flow. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:34,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:34,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 22:52:34,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:38,041 INFO L124 PetriNetUnfolderBase]: 10557/20679 cut-off events. [2024-06-27 22:52:38,041 INFO L125 PetriNetUnfolderBase]: For 152910/153036 co-relation queries the response was YES. [2024-06-27 22:52:38,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76993 conditions, 20679 events. 10557/20679 cut-off events. For 152910/153036 co-relation queries the response was YES. Maximal size of possible extension queue 1518. Compared 207574 event pairs, 6168 based on Foata normal form. 11/18876 useless extension candidates. Maximal degree in co-relation 76924. Up to 14240 conditions per place. [2024-06-27 22:52:38,269 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 184 selfloop transitions, 69 changer transitions 0/269 dead transitions. [2024-06-27 22:52:38,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 269 transitions, 4780 flow [2024-06-27 22:52:38,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:52:38,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:52:38,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-06-27 22:52:38,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5684523809523809 [2024-06-27 22:52:38,270 INFO L175 Difference]: Start difference. First operand has 167 places, 219 transitions, 3910 flow. Second operand 7 states and 191 transitions. [2024-06-27 22:52:38,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 269 transitions, 4780 flow [2024-06-27 22:52:38,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 269 transitions, 4517 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 22:52:38,798 INFO L231 Difference]: Finished difference. Result has 169 places, 228 transitions, 4052 flow [2024-06-27 22:52:38,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3662, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4052, PETRI_PLACES=169, PETRI_TRANSITIONS=228} [2024-06-27 22:52:38,799 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 115 predicate places. [2024-06-27 22:52:38,799 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 228 transitions, 4052 flow [2024-06-27 22:52:38,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:38,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:38,799 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] [2024-06-27 22:52:38,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:52:38,799 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:52:38,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:38,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1493408331, now seen corresponding path program 4 times [2024-06-27 22:52:38,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:38,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094079584] [2024-06-27 22:52:38,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:38,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:38,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:40,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:40,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:40,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094079584] [2024-06-27 22:52:40,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094079584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:40,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:40,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:52:40,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332564614] [2024-06-27 22:52:40,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:40,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:52:40,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:40,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:52:40,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:52:40,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 22:52:40,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 228 transitions, 4052 flow. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:40,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:40,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 22:52:40,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:43,448 INFO L124 PetriNetUnfolderBase]: 10181/19899 cut-off events. [2024-06-27 22:52:43,449 INFO L125 PetriNetUnfolderBase]: For 146368/146468 co-relation queries the response was YES. [2024-06-27 22:52:43,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75137 conditions, 19899 events. 10181/19899 cut-off events. For 146368/146468 co-relation queries the response was YES. Maximal size of possible extension queue 1445. Compared 198139 event pairs, 5869 based on Foata normal form. 7/18233 useless extension candidates. Maximal degree in co-relation 75066. Up to 13832 conditions per place. [2024-06-27 22:52:43,646 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 151 selfloop transitions, 100 changer transitions 0/267 dead transitions. [2024-06-27 22:52:43,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 267 transitions, 4809 flow [2024-06-27 22:52:43,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:52:43,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:52:43,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-27 22:52:43,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2024-06-27 22:52:43,648 INFO L175 Difference]: Start difference. First operand has 169 places, 228 transitions, 4052 flow. Second operand 7 states and 188 transitions. [2024-06-27 22:52:43,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 267 transitions, 4809 flow [2024-06-27 22:52:44,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 267 transitions, 4706 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-06-27 22:52:44,227 INFO L231 Difference]: Finished difference. Result has 175 places, 234 transitions, 4396 flow [2024-06-27 22:52:44,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3951, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4396, PETRI_PLACES=175, PETRI_TRANSITIONS=234} [2024-06-27 22:52:44,228 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 121 predicate places. [2024-06-27 22:52:44,228 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 234 transitions, 4396 flow [2024-06-27 22:52:44,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:44,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:44,229 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, 1] [2024-06-27 22:52:44,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:52:44,229 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:52:44,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:44,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1764520778, now seen corresponding path program 1 times [2024-06-27 22:52:44,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:44,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587307432] [2024-06-27 22:52:44,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:44,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat