./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe011_power.opt_pso.opt.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/safe011_power.opt_pso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe011_power.opt_pso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe011_power.opt_pso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:45:41,174 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:45:41,228 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:45:41,233 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:45:41,233 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:45:41,260 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:45:41,262 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:45:41,262 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:45:41,263 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:45:41,266 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:45:41,266 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:45:41,266 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:45:41,267 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:45:41,268 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:45:41,268 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:45:41,268 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:45:41,269 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:45:41,269 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:45:41,269 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:45:41,269 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:45:41,269 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:45:41,270 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:45:41,271 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:45:41,271 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:45:41,271 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:45:41,271 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:45:41,271 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:45:41,271 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:45:41,272 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:45:41,272 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:45:41,273 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:45:41,273 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:45:41,273 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:45:41,273 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:45:41,274 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:45:41,274 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:45:41,274 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:45:41,274 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:45:41,274 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:45:41,274 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:45:41,275 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:45:41,275 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:45:41,275 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:45:41,275 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:45:41,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:45:41,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:45:41,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:45:41,526 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:45:41,526 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:45:41,527 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_power.opt_pso.opt.i [2024-06-27 22:45:42,556 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:45:42,737 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:45:42,737 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_power.opt_pso.opt.i [2024-06-27 22:45:42,749 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e13613b2e/82bdf077f7e14ccfbefca0170125e7e9/FLAGe2513c1c4 [2024-06-27 22:45:42,763 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e13613b2e/82bdf077f7e14ccfbefca0170125e7e9 [2024-06-27 22:45:42,765 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:45:42,766 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:45:42,766 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe011_power.opt_pso.opt.yml/witness.yml [2024-06-27 22:45:42,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:45:42,841 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:45:42,842 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:45:42,842 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:45:42,846 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:45:42,846 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:45:42" (1/2) ... [2024-06-27 22:45:42,847 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f9255af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:45:42, skipping insertion in model container [2024-06-27 22:45:42,848 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:45:42" (1/2) ... [2024-06-27 22:45:42,849 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@10d264a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:45:42, skipping insertion in model container [2024-06-27 22:45:42,850 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:45:42" (2/2) ... [2024-06-27 22:45:42,850 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f9255af and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:42, skipping insertion in model container [2024-06-27 22:45:42,851 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:45:42" (2/2) ... [2024-06-27 22:45:42,851 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:45:42,879 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:45:42,880 INFO L97 edCorrectnessWitness]: Location invariant before [L821-L821] ! multithreaded || (((((((((((((((0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 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) && (1LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0 >= 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_used >= 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_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 22:45:42,880 INFO L97 edCorrectnessWitness]: Location invariant before [L824-L824] ! multithreaded || (((((((((((((((0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 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) && (1LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0 >= 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_used >= 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_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 22:45:42,880 INFO L97 edCorrectnessWitness]: Location invariant before [L823-L823] ! multithreaded || (((((((((((((((0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 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) && (1LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0 >= 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_used >= 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_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 22:45:42,881 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:45:42,881 INFO L106 edCorrectnessWitness]: ghost_update [L819-L819] multithreaded = 1; [2024-06-27 22:45:42,925 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:45:43,090 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/safe011_power.opt_pso.opt.i[959,972] [2024-06-27 22:45:43,282 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:45:43,290 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:45:43,322 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/safe011_power.opt_pso.opt.i[959,972] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:45:43,394 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:45:43,430 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:45:43,431 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:43 WrapperNode [2024-06-27 22:45:43,431 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:45:43,432 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:45:43,432 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:45:43,432 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:45:43,438 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:43" (1/1) ... [2024-06-27 22:45:43,463 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:43" (1/1) ... [2024-06-27 22:45:43,497 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 139 [2024-06-27 22:45:43,498 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:45:43,499 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:45:43,499 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:45:43,499 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:45:43,507 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:43" (1/1) ... [2024-06-27 22:45:43,508 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:43" (1/1) ... [2024-06-27 22:45:43,522 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:43" (1/1) ... [2024-06-27 22:45:43,565 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 22:45:43,565 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:43" (1/1) ... [2024-06-27 22:45:43,565 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:43" (1/1) ... [2024-06-27 22:45:43,571 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:43" (1/1) ... [2024-06-27 22:45:43,587 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:43" (1/1) ... [2024-06-27 22:45:43,588 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:43" (1/1) ... [2024-06-27 22:45:43,590 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:43" (1/1) ... [2024-06-27 22:45:43,592 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:45:43,595 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:45:43,595 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:45:43,595 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:45:43,597 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:43" (1/1) ... [2024-06-27 22:45:43,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:45:43,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:45:43,647 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 22:45:43,653 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 22:45:43,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:45:43,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:45:43,676 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:45:43,676 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:45:43,676 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:45:43,677 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:45:43,677 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:45:43,677 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:45:43,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:45:43,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:45:43,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:45:43,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:45:43,679 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 22:45:43,772 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:45:43,773 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:45:44,053 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:45:44,053 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:45:44,173 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:45:44,174 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:45:44,174 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:45:44 BoogieIcfgContainer [2024-06-27 22:45:44,174 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:45:44,176 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:45:44,176 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:45:44,179 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:45:44,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:45:42" (1/4) ... [2024-06-27 22:45:44,180 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39bfc696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:45:44, skipping insertion in model container [2024-06-27 22:45:44,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:45:42" (2/4) ... [2024-06-27 22:45:44,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39bfc696 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:45:44, skipping insertion in model container [2024-06-27 22:45:44,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:43" (3/4) ... [2024-06-27 22:45:44,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39bfc696 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:45:44, skipping insertion in model container [2024-06-27 22:45:44,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:45:44" (4/4) ... [2024-06-27 22:45:44,183 INFO L112 eAbstractionObserver]: Analyzing ICFG safe011_power.opt_pso.opt.i [2024-06-27 22:45:44,196 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:45:44,197 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 22:45:44,197 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:45:44,237 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:45:44,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 22:45:44,294 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-27 22:45:44,295 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:45:44,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-06-27 22:45:44,298 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 22:45:44,303 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 43 transitions, 95 flow [2024-06-27 22:45:44,315 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:45:44,324 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;@d37c0e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:45:44,324 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 22:45:44,328 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:45:44,328 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:45:44,328 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:45:44,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:44,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:45:44,329 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 22:45:44,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:44,333 INFO L85 PathProgramCache]: Analyzing trace with hash 351296548, now seen corresponding path program 1 times [2024-06-27 22:45:44,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:44,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897030587] [2024-06-27 22:45:44,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:44,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:44,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:44,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:44,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897030587] [2024-06-27 22:45:44,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897030587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:44,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:44,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:45:44,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667349803] [2024-06-27 22:45:44,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:44,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:45:44,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:44,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:45:44,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:45:44,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 46 [2024-06-27 22:45:44,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 22:45:44,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:44,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 46 [2024-06-27 22:45:44,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:45,312 INFO L124 PetriNetUnfolderBase]: 1309/2115 cut-off events. [2024-06-27 22:45:45,312 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-06-27 22:45:45,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4141 conditions, 2115 events. 1309/2115 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 12942 event pairs, 374 based on Foata normal form. 72/2067 useless extension candidates. Maximal degree in co-relation 4129. Up to 1926 conditions per place. [2024-06-27 22:45:45,325 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 40 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2024-06-27 22:45:45,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 217 flow [2024-06-27 22:45:45,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:45:45,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:45:45,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-06-27 22:45:45,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7463768115942029 [2024-06-27 22:45:45,335 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 95 flow. Second operand 3 states and 103 transitions. [2024-06-27 22:45:45,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 217 flow [2024-06-27 22:45:45,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 212 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:45:45,339 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 115 flow [2024-06-27 22:45:45,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2024-06-27 22:45:45,343 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-06-27 22:45:45,343 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 115 flow [2024-06-27 22:45:45,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 22:45:45,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:45,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:45,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:45:45,344 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:45:45,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:45,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1359200355, now seen corresponding path program 1 times [2024-06-27 22:45:45,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:45,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211384139] [2024-06-27 22:45:45,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:45,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:45,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:45,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:45,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211384139] [2024-06-27 22:45:45,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211384139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:45,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:45,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:45:45,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869360548] [2024-06-27 22:45:45,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:45,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:45:45,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:45,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:45:45,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:45:45,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 46 [2024-06-27 22:45:45,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 115 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 22:45:45,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:45,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 46 [2024-06-27 22:45:45,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:45,889 INFO L124 PetriNetUnfolderBase]: 1102/1901 cut-off events. [2024-06-27 22:45:45,889 INFO L125 PetriNetUnfolderBase]: For 271/271 co-relation queries the response was YES. [2024-06-27 22:45:45,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3965 conditions, 1901 events. 1102/1901 cut-off events. For 271/271 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 11236 event pairs, 418 based on Foata normal form. 15/1854 useless extension candidates. Maximal degree in co-relation 3953. Up to 1425 conditions per place. [2024-06-27 22:45:45,898 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 47 selfloop transitions, 4 changer transitions 3/69 dead transitions. [2024-06-27 22:45:45,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 69 transitions, 275 flow [2024-06-27 22:45:45,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:45:45,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:45:45,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-06-27 22:45:45,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7065217391304348 [2024-06-27 22:45:45,903 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 115 flow. Second operand 4 states and 130 transitions. [2024-06-27 22:45:45,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 69 transitions, 275 flow [2024-06-27 22:45:45,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 69 transitions, 272 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:45:45,906 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 116 flow [2024-06-27 22:45:45,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=116, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2024-06-27 22:45:45,906 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2024-06-27 22:45:45,907 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 116 flow [2024-06-27 22:45:45,907 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 22:45:45,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:45,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:45,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:45:45,907 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 22:45:45,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:45,916 INFO L85 PathProgramCache]: Analyzing trace with hash -759188824, now seen corresponding path program 1 times [2024-06-27 22:45:45,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:45,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445268213] [2024-06-27 22:45:45,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:45,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:46,220 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 22:45:46,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:46,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445268213] [2024-06-27 22:45:46,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445268213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:46,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:46,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:45:46,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31777667] [2024-06-27 22:45:46,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:46,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:45:46,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:46,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:45:46,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:45:46,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 46 [2024-06-27 22:45:46,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 22:45:46,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:46,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 46 [2024-06-27 22:45:46,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:46,428 INFO L124 PetriNetUnfolderBase]: 964/1733 cut-off events. [2024-06-27 22:45:46,428 INFO L125 PetriNetUnfolderBase]: For 608/608 co-relation queries the response was YES. [2024-06-27 22:45:46,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3750 conditions, 1733 events. 964/1733 cut-off events. For 608/608 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 10687 event pairs, 630 based on Foata normal form. 2/1662 useless extension candidates. Maximal degree in co-relation 3736. Up to 1439 conditions per place. [2024-06-27 22:45:46,437 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 38 selfloop transitions, 9 changer transitions 0/62 dead transitions. [2024-06-27 22:45:46,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 62 transitions, 269 flow [2024-06-27 22:45:46,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:45:46,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:45:46,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-06-27 22:45:46,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6467391304347826 [2024-06-27 22:45:46,440 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 116 flow. Second operand 4 states and 119 transitions. [2024-06-27 22:45:46,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 62 transitions, 269 flow [2024-06-27 22:45:46,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 258 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 22:45:46,443 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 176 flow [2024-06-27 22:45:46,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2024-06-27 22:45:46,444 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-06-27 22:45:46,445 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 176 flow [2024-06-27 22:45:46,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 22:45:46,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:46,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:46,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:45:46,446 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 22:45:46,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:46,446 INFO L85 PathProgramCache]: Analyzing trace with hash -2060015213, now seen corresponding path program 1 times [2024-06-27 22:45:46,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:46,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335705350] [2024-06-27 22:45:46,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:46,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:46,723 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 22:45:46,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:46,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335705350] [2024-06-27 22:45:46,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335705350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:46,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:46,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:45:46,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926839303] [2024-06-27 22:45:46,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:46,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:45:46,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:46,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:45:46,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:45:46,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:45:46,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:46,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:46,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:45:46,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:47,034 INFO L124 PetriNetUnfolderBase]: 1282/2306 cut-off events. [2024-06-27 22:45:47,034 INFO L125 PetriNetUnfolderBase]: For 1296/1296 co-relation queries the response was YES. [2024-06-27 22:45:47,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5360 conditions, 2306 events. 1282/2306 cut-off events. For 1296/1296 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 14687 event pairs, 831 based on Foata normal form. 2/2216 useless extension candidates. Maximal degree in co-relation 5344. Up to 1879 conditions per place. [2024-06-27 22:45:47,046 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 52 selfloop transitions, 13 changer transitions 0/79 dead transitions. [2024-06-27 22:45:47,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 79 transitions, 407 flow [2024-06-27 22:45:47,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:45:47,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:45:47,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 142 transitions. [2024-06-27 22:45:47,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6173913043478261 [2024-06-27 22:45:47,048 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 176 flow. Second operand 5 states and 142 transitions. [2024-06-27 22:45:47,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 79 transitions, 407 flow [2024-06-27 22:45:47,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 79 transitions, 403 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 22:45:47,052 INFO L231 Difference]: Finished difference. Result has 62 places, 61 transitions, 294 flow [2024-06-27 22:45:47,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=62, PETRI_TRANSITIONS=61} [2024-06-27 22:45:47,053 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 10 predicate places. [2024-06-27 22:45:47,053 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 61 transitions, 294 flow [2024-06-27 22:45:47,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:47,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:47,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:47,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:45:47,054 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 22:45:47,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:47,055 INFO L85 PathProgramCache]: Analyzing trace with hash 564039719, now seen corresponding path program 1 times [2024-06-27 22:45:47,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:47,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499292216] [2024-06-27 22:45:47,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:47,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:47,487 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 22:45:47,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:47,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499292216] [2024-06-27 22:45:47,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499292216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:47,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:47,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:45:47,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344787480] [2024-06-27 22:45:47,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:47,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:45:47,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:47,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:45:47,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:45:47,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:45:47,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 294 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 22:45:47,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:47,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:45:47,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:47,811 INFO L124 PetriNetUnfolderBase]: 1287/2320 cut-off events. [2024-06-27 22:45:47,811 INFO L125 PetriNetUnfolderBase]: For 2135/2135 co-relation queries the response was YES. [2024-06-27 22:45:47,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5990 conditions, 2320 events. 1287/2320 cut-off events. For 2135/2135 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 14779 event pairs, 804 based on Foata normal form. 4/2230 useless extension candidates. Maximal degree in co-relation 5969. Up to 1855 conditions per place. [2024-06-27 22:45:47,839 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 61 selfloop transitions, 15 changer transitions 0/90 dead transitions. [2024-06-27 22:45:47,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 90 transitions, 526 flow [2024-06-27 22:45:47,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:45:47,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:45:47,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2024-06-27 22:45:47,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6159420289855072 [2024-06-27 22:45:47,840 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 294 flow. Second operand 6 states and 170 transitions. [2024-06-27 22:45:47,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 90 transitions, 526 flow [2024-06-27 22:45:47,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 90 transitions, 520 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-06-27 22:45:47,848 INFO L231 Difference]: Finished difference. Result has 68 places, 63 transitions, 341 flow [2024-06-27 22:45:47,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=341, PETRI_PLACES=68, PETRI_TRANSITIONS=63} [2024-06-27 22:45:47,850 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 16 predicate places. [2024-06-27 22:45:47,854 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 63 transitions, 341 flow [2024-06-27 22:45:47,854 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 22:45:47,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:47,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:47,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:45:47,855 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 22:45:47,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:47,855 INFO L85 PathProgramCache]: Analyzing trace with hash 126911991, now seen corresponding path program 1 times [2024-06-27 22:45:47,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:47,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390742496] [2024-06-27 22:45:47,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:47,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:48,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:48,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:48,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390742496] [2024-06-27 22:45:48,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390742496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:48,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:48,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:45:48,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433599359] [2024-06-27 22:45:48,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:48,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:45:48,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:48,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:45:48,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:45:48,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 46 [2024-06-27 22:45:48,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 63 transitions, 341 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 22:45:48,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:48,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 46 [2024-06-27 22:45:48,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:48,359 INFO L124 PetriNetUnfolderBase]: 1310/2309 cut-off events. [2024-06-27 22:45:48,359 INFO L125 PetriNetUnfolderBase]: For 3054/3082 co-relation queries the response was YES. [2024-06-27 22:45:48,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6345 conditions, 2309 events. 1310/2309 cut-off events. For 3054/3082 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 14467 event pairs, 289 based on Foata normal form. 10/2217 useless extension candidates. Maximal degree in co-relation 6321. Up to 1618 conditions per place. [2024-06-27 22:45:48,375 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 66 selfloop transitions, 17 changer transitions 0/102 dead transitions. [2024-06-27 22:45:48,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 102 transitions, 615 flow [2024-06-27 22:45:48,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:45:48,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:45:48,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-06-27 22:45:48,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6782608695652174 [2024-06-27 22:45:48,377 INFO L175 Difference]: Start difference. First operand has 68 places, 63 transitions, 341 flow. Second operand 5 states and 156 transitions. [2024-06-27 22:45:48,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 102 transitions, 615 flow [2024-06-27 22:45:48,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 102 transitions, 582 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 22:45:48,383 INFO L231 Difference]: Finished difference. Result has 70 places, 72 transitions, 409 flow [2024-06-27 22:45:48,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=409, PETRI_PLACES=70, PETRI_TRANSITIONS=72} [2024-06-27 22:45:48,385 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 18 predicate places. [2024-06-27 22:45:48,385 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 72 transitions, 409 flow [2024-06-27 22:45:48,386 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 22:45:48,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:48,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:48,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:45:48,386 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 22:45:48,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:48,387 INFO L85 PathProgramCache]: Analyzing trace with hash 305086971, now seen corresponding path program 2 times [2024-06-27 22:45:48,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:48,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760279710] [2024-06-27 22:45:48,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:48,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:48,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:48,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:48,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760279710] [2024-06-27 22:45:48,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760279710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:48,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:48,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:45:48,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552690466] [2024-06-27 22:45:48,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:48,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:45:48,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:48,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:45:48,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:45:48,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 46 [2024-06-27 22:45:48,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 409 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 22:45:48,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:48,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 46 [2024-06-27 22:45:48,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:48,987 INFO L124 PetriNetUnfolderBase]: 1604/2810 cut-off events. [2024-06-27 22:45:48,988 INFO L125 PetriNetUnfolderBase]: For 6104/6178 co-relation queries the response was YES. [2024-06-27 22:45:48,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9377 conditions, 2810 events. 1604/2810 cut-off events. For 6104/6178 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 17953 event pairs, 308 based on Foata normal form. 17/2705 useless extension candidates. Maximal degree in co-relation 9351. Up to 1748 conditions per place. [2024-06-27 22:45:49,003 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 64 selfloop transitions, 29 changer transitions 0/112 dead transitions. [2024-06-27 22:45:49,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 112 transitions, 781 flow [2024-06-27 22:45:49,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:45:49,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:45:49,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 157 transitions. [2024-06-27 22:45:49,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6826086956521739 [2024-06-27 22:45:49,005 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 409 flow. Second operand 5 states and 157 transitions. [2024-06-27 22:45:49,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 112 transitions, 781 flow [2024-06-27 22:45:49,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 112 transitions, 757 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-27 22:45:49,013 INFO L231 Difference]: Finished difference. Result has 75 places, 83 transitions, 576 flow [2024-06-27 22:45:49,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=576, PETRI_PLACES=75, PETRI_TRANSITIONS=83} [2024-06-27 22:45:49,013 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 23 predicate places. [2024-06-27 22:45:49,013 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 83 transitions, 576 flow [2024-06-27 22:45:49,014 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 22:45:49,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:49,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:49,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:45:49,014 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 22:45:49,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:49,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1974094842, now seen corresponding path program 1 times [2024-06-27 22:45:49,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:49,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486767481] [2024-06-27 22:45:49,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:49,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:49,289 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 22:45:49,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:49,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486767481] [2024-06-27 22:45:49,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486767481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:49,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:49,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:45:49,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616364755] [2024-06-27 22:45:49,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:49,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:45:49,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:49,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:45:49,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:45:49,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-06-27 22:45:49,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 83 transitions, 576 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:49,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:49,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-06-27 22:45:49,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:49,862 INFO L124 PetriNetUnfolderBase]: 2083/3555 cut-off events. [2024-06-27 22:45:49,862 INFO L125 PetriNetUnfolderBase]: For 12860/13288 co-relation queries the response was YES. [2024-06-27 22:45:49,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14070 conditions, 3555 events. 2083/3555 cut-off events. For 12860/13288 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 22922 event pairs, 338 based on Foata normal form. 70/3495 useless extension candidates. Maximal degree in co-relation 14040. Up to 2359 conditions per place. [2024-06-27 22:45:49,886 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 105 selfloop transitions, 33 changer transitions 0/155 dead transitions. [2024-06-27 22:45:49,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 155 transitions, 1183 flow [2024-06-27 22:45:49,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:45:49,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:45:49,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 227 transitions. [2024-06-27 22:45:49,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6168478260869565 [2024-06-27 22:45:49,887 INFO L175 Difference]: Start difference. First operand has 75 places, 83 transitions, 576 flow. Second operand 8 states and 227 transitions. [2024-06-27 22:45:49,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 155 transitions, 1183 flow [2024-06-27 22:45:49,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 155 transitions, 1138 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-06-27 22:45:49,908 INFO L231 Difference]: Finished difference. Result has 83 places, 103 transitions, 792 flow [2024-06-27 22:45:49,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=792, PETRI_PLACES=83, PETRI_TRANSITIONS=103} [2024-06-27 22:45:49,908 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 31 predicate places. [2024-06-27 22:45:49,908 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 103 transitions, 792 flow [2024-06-27 22:45:49,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:49,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:49,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:49,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:45:49,909 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 22:45:49,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:49,910 INFO L85 PathProgramCache]: Analyzing trace with hash -367692314, now seen corresponding path program 2 times [2024-06-27 22:45:49,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:49,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634072004] [2024-06-27 22:45:49,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:49,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:50,115 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 22:45:50,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:50,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634072004] [2024-06-27 22:45:50,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634072004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:50,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:50,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:45:50,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599514586] [2024-06-27 22:45:50,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:50,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:45:50,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:50,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:45:50,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:45:50,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-06-27 22:45:50,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 103 transitions, 792 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:50,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:50,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-06-27 22:45:50,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:50,602 INFO L124 PetriNetUnfolderBase]: 2452/4124 cut-off events. [2024-06-27 22:45:50,603 INFO L125 PetriNetUnfolderBase]: For 17338/18215 co-relation queries the response was YES. [2024-06-27 22:45:50,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17863 conditions, 4124 events. 2452/4124 cut-off events. For 17338/18215 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 26761 event pairs, 291 based on Foata normal form. 109/4104 useless extension candidates. Maximal degree in co-relation 17829. Up to 2696 conditions per place. [2024-06-27 22:45:50,630 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 87 selfloop transitions, 53 changer transitions 0/157 dead transitions. [2024-06-27 22:45:50,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 157 transitions, 1420 flow [2024-06-27 22:45:50,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:45:50,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:45:50,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-06-27 22:45:50,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6739130434782609 [2024-06-27 22:45:50,632 INFO L175 Difference]: Start difference. First operand has 83 places, 103 transitions, 792 flow. Second operand 5 states and 155 transitions. [2024-06-27 22:45:50,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 157 transitions, 1420 flow [2024-06-27 22:45:50,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 157 transitions, 1374 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-27 22:45:50,674 INFO L231 Difference]: Finished difference. Result has 88 places, 125 transitions, 1191 flow [2024-06-27 22:45:50,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1191, PETRI_PLACES=88, PETRI_TRANSITIONS=125} [2024-06-27 22:45:50,675 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 36 predicate places. [2024-06-27 22:45:50,676 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 125 transitions, 1191 flow [2024-06-27 22:45:50,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:50,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:50,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:50,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:45:50,677 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:45:50,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:50,677 INFO L85 PathProgramCache]: Analyzing trace with hash 698302896, now seen corresponding path program 3 times [2024-06-27 22:45:50,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:50,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590864201] [2024-06-27 22:45:50,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:50,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:50,970 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 22:45:50,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:50,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590864201] [2024-06-27 22:45:50,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590864201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:50,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:50,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:45:50,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129877892] [2024-06-27 22:45:50,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:50,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:45:50,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:50,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:45:50,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:45:51,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-06-27 22:45:51,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 125 transitions, 1191 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:51,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:51,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-06-27 22:45:51,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:51,630 INFO L124 PetriNetUnfolderBase]: 2570/4375 cut-off events. [2024-06-27 22:45:51,630 INFO L125 PetriNetUnfolderBase]: For 25112/26991 co-relation queries the response was YES. [2024-06-27 22:45:51,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20503 conditions, 4375 events. 2570/4375 cut-off events. For 25112/26991 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 28996 event pairs, 427 based on Foata normal form. 227/4429 useless extension candidates. Maximal degree in co-relation 20464. Up to 2730 conditions per place. [2024-06-27 22:45:51,663 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 119 selfloop transitions, 58 changer transitions 0/194 dead transitions. [2024-06-27 22:45:51,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 194 transitions, 2058 flow [2024-06-27 22:45:51,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:45:51,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:45:51,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-27 22:45:51,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5652173913043478 [2024-06-27 22:45:51,665 INFO L175 Difference]: Start difference. First operand has 88 places, 125 transitions, 1191 flow. Second operand 9 states and 234 transitions. [2024-06-27 22:45:51,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 194 transitions, 2058 flow [2024-06-27 22:45:51,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 194 transitions, 1990 flow, removed 17 selfloop flow, removed 1 redundant places. [2024-06-27 22:45:51,714 INFO L231 Difference]: Finished difference. Result has 98 places, 151 transitions, 1669 flow [2024-06-27 22:45:51,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1669, PETRI_PLACES=98, PETRI_TRANSITIONS=151} [2024-06-27 22:45:51,715 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 46 predicate places. [2024-06-27 22:45:51,715 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 151 transitions, 1669 flow [2024-06-27 22:45:51,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:51,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:51,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:51,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:45:51,716 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:45:51,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:51,716 INFO L85 PathProgramCache]: Analyzing trace with hash -360693910, now seen corresponding path program 4 times [2024-06-27 22:45:51,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:51,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214660135] [2024-06-27 22:45:51,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:51,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:51,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:51,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:51,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214660135] [2024-06-27 22:45:51,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214660135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:51,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:51,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:45:51,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377491574] [2024-06-27 22:45:51,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:51,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:45:51,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:51,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:45:51,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:45:51,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 46 [2024-06-27 22:45:51,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 151 transitions, 1669 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:51,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:51,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 46 [2024-06-27 22:45:51,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:52,563 INFO L124 PetriNetUnfolderBase]: 2520/4390 cut-off events. [2024-06-27 22:45:52,563 INFO L125 PetriNetUnfolderBase]: For 33964/35878 co-relation queries the response was YES. [2024-06-27 22:45:52,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21490 conditions, 4390 events. 2520/4390 cut-off events. For 33964/35878 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 29965 event pairs, 553 based on Foata normal form. 308/4509 useless extension candidates. Maximal degree in co-relation 21447. Up to 2839 conditions per place. [2024-06-27 22:45:52,592 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 119 selfloop transitions, 44 changer transitions 0/184 dead transitions. [2024-06-27 22:45:52,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 184 transitions, 2177 flow [2024-06-27 22:45:52,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:45:52,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:45:52,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 157 transitions. [2024-06-27 22:45:52,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6826086956521739 [2024-06-27 22:45:52,593 INFO L175 Difference]: Start difference. First operand has 98 places, 151 transitions, 1669 flow. Second operand 5 states and 157 transitions. [2024-06-27 22:45:52,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 184 transitions, 2177 flow [2024-06-27 22:45:52,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 184 transitions, 2101 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-06-27 22:45:52,664 INFO L231 Difference]: Finished difference. Result has 101 places, 155 transitions, 1761 flow [2024-06-27 22:45:52,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1593, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1761, PETRI_PLACES=101, PETRI_TRANSITIONS=155} [2024-06-27 22:45:52,664 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 49 predicate places. [2024-06-27 22:45:52,665 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 155 transitions, 1761 flow [2024-06-27 22:45:52,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:52,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:52,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:52,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:45:52,666 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:45:52,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:52,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1255264338, now seen corresponding path program 1 times [2024-06-27 22:45:52,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:52,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516913259] [2024-06-27 22:45:52,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:52,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:52,887 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 22:45:52,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:52,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516913259] [2024-06-27 22:45:52,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516913259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:52,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:52,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:45:52,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313752808] [2024-06-27 22:45:52,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:52,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:45:52,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:52,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:45:52,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:45:52,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:45:52,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 155 transitions, 1761 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 22:45:52,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:52,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:45:52,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:53,556 INFO L124 PetriNetUnfolderBase]: 2948/5128 cut-off events. [2024-06-27 22:45:53,556 INFO L125 PetriNetUnfolderBase]: For 39537/39539 co-relation queries the response was YES. [2024-06-27 22:45:53,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24536 conditions, 5128 events. 2948/5128 cut-off events. For 39537/39539 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 35677 event pairs, 657 based on Foata normal form. 2/4975 useless extension candidates. Maximal degree in co-relation 24492. Up to 4058 conditions per place. [2024-06-27 22:45:53,593 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 167 selfloop transitions, 40 changer transitions 0/223 dead transitions. [2024-06-27 22:45:53,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 223 transitions, 2839 flow [2024-06-27 22:45:53,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:45:53,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:45:53,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-06-27 22:45:53,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.644927536231884 [2024-06-27 22:45:53,595 INFO L175 Difference]: Start difference. First operand has 101 places, 155 transitions, 1761 flow. Second operand 6 states and 178 transitions. [2024-06-27 22:45:53,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 223 transitions, 2839 flow [2024-06-27 22:45:53,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 223 transitions, 2697 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 22:45:53,674 INFO L231 Difference]: Finished difference. Result has 107 places, 189 transitions, 2329 flow [2024-06-27 22:45:53,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1659, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2329, PETRI_PLACES=107, PETRI_TRANSITIONS=189} [2024-06-27 22:45:53,674 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 55 predicate places. [2024-06-27 22:45:53,675 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 189 transitions, 2329 flow [2024-06-27 22:45:53,675 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 22:45:53,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:53,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:53,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:45:53,675 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:45:53,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:53,676 INFO L85 PathProgramCache]: Analyzing trace with hash 867763360, now seen corresponding path program 2 times [2024-06-27 22:45:53,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:53,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249921433] [2024-06-27 22:45:53,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:53,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:53,911 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 22:45:53,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:53,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249921433] [2024-06-27 22:45:53,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249921433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:53,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:53,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:45:53,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456330102] [2024-06-27 22:45:53,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:53,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:45:53,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:53,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:45:53,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:45:53,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:45:53,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 189 transitions, 2329 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 22:45:53,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:53,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:45:53,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:54,537 INFO L124 PetriNetUnfolderBase]: 3041/5267 cut-off events. [2024-06-27 22:45:54,538 INFO L125 PetriNetUnfolderBase]: For 42034/42036 co-relation queries the response was YES. [2024-06-27 22:45:54,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26096 conditions, 5267 events. 3041/5267 cut-off events. For 42034/42036 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 36586 event pairs, 594 based on Foata normal form. 2/5117 useless extension candidates. Maximal degree in co-relation 26048. Up to 3828 conditions per place. [2024-06-27 22:45:54,634 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 183 selfloop transitions, 67 changer transitions 0/266 dead transitions. [2024-06-27 22:45:54,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 266 transitions, 3571 flow [2024-06-27 22:45:54,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:45:54,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:45:54,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2024-06-27 22:45:54,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6630434782608695 [2024-06-27 22:45:54,638 INFO L175 Difference]: Start difference. First operand has 107 places, 189 transitions, 2329 flow. Second operand 6 states and 183 transitions. [2024-06-27 22:45:54,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 266 transitions, 3571 flow [2024-06-27 22:45:54,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 266 transitions, 3517 flow, removed 27 selfloop flow, removed 0 redundant places. [2024-06-27 22:45:54,729 INFO L231 Difference]: Finished difference. Result has 115 places, 224 transitions, 2948 flow [2024-06-27 22:45:54,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2275, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2948, PETRI_PLACES=115, PETRI_TRANSITIONS=224} [2024-06-27 22:45:54,730 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 63 predicate places. [2024-06-27 22:45:54,730 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 224 transitions, 2948 flow [2024-06-27 22:45:54,730 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 22:45:54,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:54,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:54,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:45:54,731 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:45:54,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:54,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1536457498, now seen corresponding path program 5 times [2024-06-27 22:45:54,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:54,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302083107] [2024-06-27 22:45:54,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:54,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:55,007 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 22:45:55,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:55,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302083107] [2024-06-27 22:45:55,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302083107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:55,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:55,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:45:55,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100273740] [2024-06-27 22:45:55,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:55,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:45:55,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:55,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:45:55,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:45:55,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 46 [2024-06-27 22:45:55,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 224 transitions, 2948 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:55,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:55,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 46 [2024-06-27 22:45:55,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:55,681 INFO L124 PetriNetUnfolderBase]: 2993/5216 cut-off events. [2024-06-27 22:45:55,681 INFO L125 PetriNetUnfolderBase]: For 54292/54665 co-relation queries the response was YES. [2024-06-27 22:45:55,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27967 conditions, 5216 events. 2993/5216 cut-off events. For 54292/54665 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 36736 event pairs, 454 based on Foata normal form. 78/5061 useless extension candidates. Maximal degree in co-relation 27914. Up to 2353 conditions per place. [2024-06-27 22:45:55,728 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 128 selfloop transitions, 105 changer transitions 0/261 dead transitions. [2024-06-27 22:45:55,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 261 transitions, 3724 flow [2024-06-27 22:45:55,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:45:55,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:45:55,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 157 transitions. [2024-06-27 22:45:55,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6826086956521739 [2024-06-27 22:45:55,731 INFO L175 Difference]: Start difference. First operand has 115 places, 224 transitions, 2948 flow. Second operand 5 states and 157 transitions. [2024-06-27 22:45:55,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 261 transitions, 3724 flow [2024-06-27 22:45:55,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 261 transitions, 3612 flow, removed 56 selfloop flow, removed 0 redundant places. [2024-06-27 22:45:55,847 INFO L231 Difference]: Finished difference. Result has 121 places, 232 transitions, 3312 flow [2024-06-27 22:45:55,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2836, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3312, PETRI_PLACES=121, PETRI_TRANSITIONS=232} [2024-06-27 22:45:55,848 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 69 predicate places. [2024-06-27 22:45:55,848 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 232 transitions, 3312 flow [2024-06-27 22:45:55,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:55,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:55,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:55,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:45:55,849 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:45:55,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:55,849 INFO L85 PathProgramCache]: Analyzing trace with hash 876044080, now seen corresponding path program 3 times [2024-06-27 22:45:55,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:55,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222975187] [2024-06-27 22:45:55,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:55,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:56,043 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 22:45:56,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:56,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222975187] [2024-06-27 22:45:56,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222975187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:56,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:56,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:45:56,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309032886] [2024-06-27 22:45:56,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:56,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:45:56,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:56,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:45:56,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:45:56,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:45:56,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 232 transitions, 3312 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 22:45:56,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:56,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:45:56,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:56,781 INFO L124 PetriNetUnfolderBase]: 3191/5547 cut-off events. [2024-06-27 22:45:56,782 INFO L125 PetriNetUnfolderBase]: For 63295/63297 co-relation queries the response was YES. [2024-06-27 22:45:56,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31101 conditions, 5547 events. 3191/5547 cut-off events. For 63295/63297 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 38877 event pairs, 770 based on Foata normal form. 2/5373 useless extension candidates. Maximal degree in co-relation 31044. Up to 4060 conditions per place. [2024-06-27 22:45:56,824 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 182 selfloop transitions, 77 changer transitions 0/275 dead transitions. [2024-06-27 22:45:56,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 275 transitions, 4153 flow [2024-06-27 22:45:56,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:45:56,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:45:56,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2024-06-27 22:45:56,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6557971014492754 [2024-06-27 22:45:56,826 INFO L175 Difference]: Start difference. First operand has 121 places, 232 transitions, 3312 flow. Second operand 6 states and 181 transitions. [2024-06-27 22:45:56,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 275 transitions, 4153 flow [2024-06-27 22:45:57,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 275 transitions, 4034 flow, removed 45 selfloop flow, removed 1 redundant places. [2024-06-27 22:45:57,028 INFO L231 Difference]: Finished difference. Result has 127 places, 241 transitions, 3554 flow [2024-06-27 22:45:57,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3195, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3554, PETRI_PLACES=127, PETRI_TRANSITIONS=241} [2024-06-27 22:45:57,029 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 75 predicate places. [2024-06-27 22:45:57,029 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 241 transitions, 3554 flow [2024-06-27 22:45:57,030 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 22:45:57,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:57,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:57,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:45:57,030 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:45:57,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:57,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1884649119, now seen corresponding path program 1 times [2024-06-27 22:45:57,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:57,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41197384] [2024-06-27 22:45:57,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:57,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:57,279 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 22:45:57,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:57,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41197384] [2024-06-27 22:45:57,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41197384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:57,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:57,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:45:57,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49835734] [2024-06-27 22:45:57,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:57,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:45:57,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:57,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:45:57,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:45:57,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:45:57,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 241 transitions, 3554 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:57,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:57,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:45:57,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:58,215 INFO L124 PetriNetUnfolderBase]: 3404/5859 cut-off events. [2024-06-27 22:45:58,215 INFO L125 PetriNetUnfolderBase]: For 62897/62900 co-relation queries the response was YES. [2024-06-27 22:45:58,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33545 conditions, 5859 events. 3404/5859 cut-off events. For 62897/62900 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 40875 event pairs, 603 based on Foata normal form. 6/5732 useless extension candidates. Maximal degree in co-relation 33484. Up to 4540 conditions per place. [2024-06-27 22:45:58,253 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 211 selfloop transitions, 74 changer transitions 0/297 dead transitions. [2024-06-27 22:45:58,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 297 transitions, 4461 flow [2024-06-27 22:45:58,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:45:58,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:45:58,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-06-27 22:45:58,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.644927536231884 [2024-06-27 22:45:58,255 INFO L175 Difference]: Start difference. First operand has 127 places, 241 transitions, 3554 flow. Second operand 6 states and 178 transitions. [2024-06-27 22:45:58,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 297 transitions, 4461 flow [2024-06-27 22:45:58,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 297 transitions, 4353 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-27 22:45:58,407 INFO L231 Difference]: Finished difference. Result has 134 places, 262 transitions, 3958 flow [2024-06-27 22:45:58,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3471, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3958, PETRI_PLACES=134, PETRI_TRANSITIONS=262} [2024-06-27 22:45:58,408 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 82 predicate places. [2024-06-27 22:45:58,408 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 262 transitions, 3958 flow [2024-06-27 22:45:58,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:58,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:58,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:58,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:45:58,409 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:45:58,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:58,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1366095725, now seen corresponding path program 2 times [2024-06-27 22:45:58,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:58,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079817306] [2024-06-27 22:45:58,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:58,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:58,727 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 22:45:58,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:58,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079817306] [2024-06-27 22:45:58,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079817306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:58,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:58,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:45:58,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991197138] [2024-06-27 22:45:58,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:58,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:45:58,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:58,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:45:58,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:45:58,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-06-27 22:45:58,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 262 transitions, 3958 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 22:45:58,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:58,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-06-27 22:45:58,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:59,618 INFO L124 PetriNetUnfolderBase]: 3259/5676 cut-off events. [2024-06-27 22:45:59,618 INFO L125 PetriNetUnfolderBase]: For 64104/64106 co-relation queries the response was YES. [2024-06-27 22:45:59,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33030 conditions, 5676 events. 3259/5676 cut-off events. For 64104/64106 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 40195 event pairs, 663 based on Foata normal form. 4/5503 useless extension candidates. Maximal degree in co-relation 32963. Up to 4239 conditions per place. [2024-06-27 22:45:59,657 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 218 selfloop transitions, 68 changer transitions 0/302 dead transitions. [2024-06-27 22:45:59,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 302 transitions, 4758 flow [2024-06-27 22:45:59,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:45:59,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:45:59,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-06-27 22:45:59,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5962732919254659 [2024-06-27 22:45:59,659 INFO L175 Difference]: Start difference. First operand has 134 places, 262 transitions, 3958 flow. Second operand 7 states and 192 transitions. [2024-06-27 22:45:59,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 302 transitions, 4758 flow [2024-06-27 22:45:59,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 302 transitions, 4660 flow, removed 26 selfloop flow, removed 1 redundant places. [2024-06-27 22:45:59,859 INFO L231 Difference]: Finished difference. Result has 142 places, 270 transitions, 4213 flow [2024-06-27 22:45:59,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3872, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4213, PETRI_PLACES=142, PETRI_TRANSITIONS=270} [2024-06-27 22:45:59,860 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 90 predicate places. [2024-06-27 22:45:59,860 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 270 transitions, 4213 flow [2024-06-27 22:45:59,860 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 22:45:59,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:59,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:59,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:45:59,861 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:45:59,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:59,861 INFO L85 PathProgramCache]: Analyzing trace with hash -501719651, now seen corresponding path program 3 times [2024-06-27 22:45:59,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:59,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042547957] [2024-06-27 22:45:59,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:59,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:00,162 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 22:46:00,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:00,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042547957] [2024-06-27 22:46:00,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042547957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:00,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:00,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:46:00,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665589948] [2024-06-27 22:46:00,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:00,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:46:00,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:00,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:46:00,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:46:00,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:46:00,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 270 transitions, 4213 flow. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:00,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:00,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:46:00,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:00,979 INFO L124 PetriNetUnfolderBase]: 3288/5755 cut-off events. [2024-06-27 22:46:00,979 INFO L125 PetriNetUnfolderBase]: For 69805/69807 co-relation queries the response was YES. [2024-06-27 22:46:01,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33868 conditions, 5755 events. 3288/5755 cut-off events. For 69805/69807 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 41007 event pairs, 652 based on Foata normal form. 4/5573 useless extension candidates. Maximal degree in co-relation 33797. Up to 4475 conditions per place. [2024-06-27 22:46:01,024 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 239 selfloop transitions, 52 changer transitions 0/308 dead transitions. [2024-06-27 22:46:01,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 308 transitions, 4991 flow [2024-06-27 22:46:01,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:46:01,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:46:01,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-06-27 22:46:01,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2024-06-27 22:46:01,026 INFO L175 Difference]: Start difference. First operand has 142 places, 270 transitions, 4213 flow. Second operand 6 states and 180 transitions. [2024-06-27 22:46:01,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 308 transitions, 4991 flow [2024-06-27 22:46:01,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 308 transitions, 4921 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-27 22:46:01,235 INFO L231 Difference]: Finished difference. Result has 147 places, 278 transitions, 4397 flow [2024-06-27 22:46:01,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4143, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4397, PETRI_PLACES=147, PETRI_TRANSITIONS=278} [2024-06-27 22:46:01,236 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 95 predicate places. [2024-06-27 22:46:01,236 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 278 transitions, 4397 flow [2024-06-27 22:46:01,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:01,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:01,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:01,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:46:01,236 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:01,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:01,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1703398326, now seen corresponding path program 1 times [2024-06-27 22:46:01,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:01,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463745186] [2024-06-27 22:46:01,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:01,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:01,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:01,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:01,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463745186] [2024-06-27 22:46:01,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463745186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:01,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:01,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:46:01,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501678871] [2024-06-27 22:46:01,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:01,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:46:01,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:01,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:46:01,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:46:01,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:46:01,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 278 transitions, 4397 flow. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:01,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:01,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:46:01,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:02,583 INFO L124 PetriNetUnfolderBase]: 3381/5917 cut-off events. [2024-06-27 22:46:02,583 INFO L125 PetriNetUnfolderBase]: For 80300/80302 co-relation queries the response was YES. [2024-06-27 22:46:02,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35099 conditions, 5917 events. 3381/5917 cut-off events. For 80300/80302 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 42336 event pairs, 811 based on Foata normal form. 12/5737 useless extension candidates. Maximal degree in co-relation 35026. Up to 4582 conditions per place. [2024-06-27 22:46:02,636 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 252 selfloop transitions, 49 changer transitions 0/318 dead transitions. [2024-06-27 22:46:02,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 318 transitions, 5186 flow [2024-06-27 22:46:02,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:46:02,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:46:02,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 207 transitions. [2024-06-27 22:46:02,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-06-27 22:46:02,639 INFO L175 Difference]: Start difference. First operand has 147 places, 278 transitions, 4397 flow. Second operand 7 states and 207 transitions. [2024-06-27 22:46:02,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 318 transitions, 5186 flow [2024-06-27 22:46:02,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 318 transitions, 5127 flow, removed 21 selfloop flow, removed 1 redundant places. [2024-06-27 22:46:02,862 INFO L231 Difference]: Finished difference. Result has 153 places, 279 transitions, 4453 flow [2024-06-27 22:46:02,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4338, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4453, PETRI_PLACES=153, PETRI_TRANSITIONS=279} [2024-06-27 22:46:02,863 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 101 predicate places. [2024-06-27 22:46:02,863 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 279 transitions, 4453 flow [2024-06-27 22:46:02,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:02,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:02,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:02,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:46:02,864 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:02,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:02,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1130862049, now seen corresponding path program 4 times [2024-06-27 22:46:02,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:02,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318077285] [2024-06-27 22:46:02,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:02,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:03,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:03,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:03,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318077285] [2024-06-27 22:46:03,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318077285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:03,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:03,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:46:03,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21288761] [2024-06-27 22:46:03,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:03,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:46:03,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:03,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:46:03,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:46:03,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:46:03,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 279 transitions, 4453 flow. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:03,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:03,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:46:03,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:04,189 INFO L124 PetriNetUnfolderBase]: 3443/6053 cut-off events. [2024-06-27 22:46:04,189 INFO L125 PetriNetUnfolderBase]: For 80922/80924 co-relation queries the response was YES. [2024-06-27 22:46:04,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36096 conditions, 6053 events. 3443/6053 cut-off events. For 80922/80924 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 43709 event pairs, 693 based on Foata normal form. 4/5869 useless extension candidates. Maximal degree in co-relation 36020. Up to 4184 conditions per place. [2024-06-27 22:46:04,230 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 208 selfloop transitions, 101 changer transitions 0/326 dead transitions. [2024-06-27 22:46:04,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 326 transitions, 5489 flow [2024-06-27 22:46:04,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:46:04,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:46:04,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2024-06-27 22:46:04,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6630434782608695 [2024-06-27 22:46:04,231 INFO L175 Difference]: Start difference. First operand has 153 places, 279 transitions, 4453 flow. Second operand 6 states and 183 transitions. [2024-06-27 22:46:04,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 326 transitions, 5489 flow [2024-06-27 22:46:04,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 326 transitions, 5376 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 22:46:04,455 INFO L231 Difference]: Finished difference. Result has 156 places, 294 transitions, 4901 flow [2024-06-27 22:46:04,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4340, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4901, PETRI_PLACES=156, PETRI_TRANSITIONS=294} [2024-06-27 22:46:04,455 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 104 predicate places. [2024-06-27 22:46:04,455 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 294 transitions, 4901 flow [2024-06-27 22:46:04,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:04,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:04,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:04,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:46:04,456 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:04,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:04,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1130862266, now seen corresponding path program 2 times [2024-06-27 22:46:04,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:04,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752029973] [2024-06-27 22:46:04,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:04,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:04,787 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 22:46:04,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:04,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752029973] [2024-06-27 22:46:04,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752029973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:04,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:04,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:46:04,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462531702] [2024-06-27 22:46:04,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:04,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:46:04,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:04,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:46:04,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:46:04,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:46:04,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 294 transitions, 4901 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 22:46:04,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:04,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:46:04,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:05,667 INFO L124 PetriNetUnfolderBase]: 3549/6256 cut-off events. [2024-06-27 22:46:05,668 INFO L125 PetriNetUnfolderBase]: For 90075/90077 co-relation queries the response was YES. [2024-06-27 22:46:05,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38258 conditions, 6256 events. 3549/6256 cut-off events. For 90075/90077 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 45542 event pairs, 600 based on Foata normal form. 12/6079 useless extension candidates. Maximal degree in co-relation 38180. Up to 4228 conditions per place. [2024-06-27 22:46:05,718 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 208 selfloop transitions, 104 changer transitions 0/329 dead transitions. [2024-06-27 22:46:05,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 329 transitions, 5714 flow [2024-06-27 22:46:05,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:46:05,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:46:05,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2024-06-27 22:46:05,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6557971014492754 [2024-06-27 22:46:05,720 INFO L175 Difference]: Start difference. First operand has 156 places, 294 transitions, 4901 flow. Second operand 6 states and 181 transitions. [2024-06-27 22:46:05,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 329 transitions, 5714 flow [2024-06-27 22:46:06,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 329 transitions, 5587 flow, removed 48 selfloop flow, removed 2 redundant places. [2024-06-27 22:46:06,011 INFO L231 Difference]: Finished difference. Result has 160 places, 296 transitions, 5031 flow [2024-06-27 22:46:06,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4776, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5031, PETRI_PLACES=160, PETRI_TRANSITIONS=296} [2024-06-27 22:46:06,012 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 108 predicate places. [2024-06-27 22:46:06,012 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 296 transitions, 5031 flow [2024-06-27 22:46:06,012 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 22:46:06,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:06,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:06,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:46:06,013 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:06,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:06,013 INFO L85 PathProgramCache]: Analyzing trace with hash -385332941, now seen corresponding path program 5 times [2024-06-27 22:46:06,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:06,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639818664] [2024-06-27 22:46:06,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:06,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:06,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:06,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:06,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639818664] [2024-06-27 22:46:06,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639818664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:06,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:06,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:46:06,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188702681] [2024-06-27 22:46:06,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:06,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:46:06,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:06,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:46:06,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:46:06,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:46:06,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 296 transitions, 5031 flow. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:06,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:06,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:46:06,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:07,215 INFO L124 PetriNetUnfolderBase]: 3541/6231 cut-off events. [2024-06-27 22:46:07,215 INFO L125 PetriNetUnfolderBase]: For 85616/85618 co-relation queries the response was YES. [2024-06-27 22:46:07,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38803 conditions, 6231 events. 3541/6231 cut-off events. For 85616/85618 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 45331 event pairs, 692 based on Foata normal form. 4/6046 useless extension candidates. Maximal degree in co-relation 38724. Up to 4344 conditions per place. [2024-06-27 22:46:07,270 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 197 selfloop transitions, 114 changer transitions 0/328 dead transitions. [2024-06-27 22:46:07,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 328 transitions, 5773 flow [2024-06-27 22:46:07,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:46:07,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:46:07,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-06-27 22:46:07,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2024-06-27 22:46:07,271 INFO L175 Difference]: Start difference. First operand has 160 places, 296 transitions, 5031 flow. Second operand 6 states and 180 transitions. [2024-06-27 22:46:07,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 328 transitions, 5773 flow [2024-06-27 22:46:07,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 328 transitions, 5542 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-27 22:46:07,537 INFO L231 Difference]: Finished difference. Result has 163 places, 299 transitions, 5138 flow [2024-06-27 22:46:07,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4804, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5138, PETRI_PLACES=163, PETRI_TRANSITIONS=299} [2024-06-27 22:46:07,538 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 111 predicate places. [2024-06-27 22:46:07,538 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 299 transitions, 5138 flow [2024-06-27 22:46:07,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:07,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:07,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:07,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:46:07,538 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:07,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:07,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1396768796, now seen corresponding path program 3 times [2024-06-27 22:46:07,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:07,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954796885] [2024-06-27 22:46:07,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:07,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:07,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:07,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:07,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954796885] [2024-06-27 22:46:07,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954796885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:07,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:07,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:46:07,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399856423] [2024-06-27 22:46:07,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:07,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:46:07,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:07,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:46:07,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:46:07,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:46:07,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 299 transitions, 5138 flow. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:07,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:07,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:46:07,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:08,842 INFO L124 PetriNetUnfolderBase]: 3602/6287 cut-off events. [2024-06-27 22:46:08,842 INFO L125 PetriNetUnfolderBase]: For 93829/93831 co-relation queries the response was YES. [2024-06-27 22:46:08,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39614 conditions, 6287 events. 3602/6287 cut-off events. For 93829/93831 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 45166 event pairs, 711 based on Foata normal form. 12/6110 useless extension candidates. Maximal degree in co-relation 39533. Up to 4180 conditions per place. [2024-06-27 22:46:08,891 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 222 selfloop transitions, 105 changer transitions 0/344 dead transitions. [2024-06-27 22:46:08,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 344 transitions, 6063 flow [2024-06-27 22:46:08,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:46:08,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:46:08,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 210 transitions. [2024-06-27 22:46:08,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2024-06-27 22:46:08,892 INFO L175 Difference]: Start difference. First operand has 163 places, 299 transitions, 5138 flow. Second operand 7 states and 210 transitions. [2024-06-27 22:46:08,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 344 transitions, 6063 flow [2024-06-27 22:46:09,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 344 transitions, 5920 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-27 22:46:09,171 INFO L231 Difference]: Finished difference. Result has 167 places, 300 transitions, 5226 flow [2024-06-27 22:46:09,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4997, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5226, PETRI_PLACES=167, PETRI_TRANSITIONS=300} [2024-06-27 22:46:09,171 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 115 predicate places. [2024-06-27 22:46:09,171 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 300 transitions, 5226 flow [2024-06-27 22:46:09,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:09,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:09,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:09,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:46:09,172 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:09,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:09,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1401763225, now seen corresponding path program 1 times [2024-06-27 22:46:09,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:09,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802717212] [2024-06-27 22:46:09,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:09,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:09,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:09,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:09,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802717212] [2024-06-27 22:46:09,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802717212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:09,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:09,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:46:09,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065402824] [2024-06-27 22:46:09,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:09,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:46:09,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:09,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:46:09,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:46:09,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:46:09,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 300 transitions, 5226 flow. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:09,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:09,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:46:09,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:10,501 INFO L124 PetriNetUnfolderBase]: 3610/6411 cut-off events. [2024-06-27 22:46:10,502 INFO L125 PetriNetUnfolderBase]: For 90417/90419 co-relation queries the response was YES. [2024-06-27 22:46:10,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39861 conditions, 6411 events. 3610/6411 cut-off events. For 90417/90419 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 47250 event pairs, 570 based on Foata normal form. 8/6220 useless extension candidates. Maximal degree in co-relation 39780. Up to 3984 conditions per place. [2024-06-27 22:46:10,559 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 198 selfloop transitions, 118 changer transitions 0/333 dead transitions. [2024-06-27 22:46:10,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 333 transitions, 5991 flow [2024-06-27 22:46:10,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:46:10,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:46:10,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-06-27 22:46:10,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2024-06-27 22:46:10,561 INFO L175 Difference]: Start difference. First operand has 167 places, 300 transitions, 5226 flow. Second operand 6 states and 180 transitions. [2024-06-27 22:46:10,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 333 transitions, 5991 flow [2024-06-27 22:46:10,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 333 transitions, 5780 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 22:46:10,954 INFO L231 Difference]: Finished difference. Result has 167 places, 300 transitions, 5245 flow [2024-06-27 22:46:10,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4973, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5245, PETRI_PLACES=167, PETRI_TRANSITIONS=300} [2024-06-27 22:46:10,955 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 115 predicate places. [2024-06-27 22:46:10,955 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 300 transitions, 5245 flow [2024-06-27 22:46:10,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:10,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:10,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:10,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:46:10,956 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 22:46:10,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:10,956 INFO L85 PathProgramCache]: Analyzing trace with hash -871610169, now seen corresponding path program 1 times [2024-06-27 22:46:10,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:10,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181651868] [2024-06-27 22:46:10,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:10,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:10,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:11,159 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 22:46:11,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:11,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181651868] [2024-06-27 22:46:11,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181651868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:11,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:11,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:46:11,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124001691] [2024-06-27 22:46:11,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:11,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:46:11,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:11,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:46:11,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:46:11,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:46:11,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 300 transitions, 5245 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:11,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:11,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:46:11,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:12,005 INFO L124 PetriNetUnfolderBase]: 3644/6393 cut-off events. [2024-06-27 22:46:12,005 INFO L125 PetriNetUnfolderBase]: For 90894/90896 co-relation queries the response was YES. [2024-06-27 22:46:12,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40482 conditions, 6393 events. 3644/6393 cut-off events. For 90894/90896 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 46929 event pairs, 1201 based on Foata normal form. 1/6214 useless extension candidates. Maximal degree in co-relation 40400. Up to 5300 conditions per place. [2024-06-27 22:46:12,062 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 284 selfloop transitions, 28 changer transitions 0/329 dead transitions. [2024-06-27 22:46:12,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 329 transitions, 6147 flow [2024-06-27 22:46:12,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:46:12,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:46:12,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 167 transitions. [2024-06-27 22:46:12,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.605072463768116 [2024-06-27 22:46:12,064 INFO L175 Difference]: Start difference. First operand has 167 places, 300 transitions, 5245 flow. Second operand 6 states and 167 transitions. [2024-06-27 22:46:12,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 329 transitions, 6147 flow [2024-06-27 22:46:12,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 329 transitions, 5929 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 22:46:12,373 INFO L231 Difference]: Finished difference. Result has 169 places, 308 transitions, 5262 flow [2024-06-27 22:46:12,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5027, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5262, PETRI_PLACES=169, PETRI_TRANSITIONS=308} [2024-06-27 22:46:12,373 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 117 predicate places. [2024-06-27 22:46:12,373 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 308 transitions, 5262 flow [2024-06-27 22:46:12,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:12,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:12,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:12,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:46:12,374 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 22:46:12,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:12,374 INFO L85 PathProgramCache]: Analyzing trace with hash -871490199, now seen corresponding path program 2 times [2024-06-27 22:46:12,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:12,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054580543] [2024-06-27 22:46:12,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:12,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:12,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:12,558 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 22:46:12,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:12,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054580543] [2024-06-27 22:46:12,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054580543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:12,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:12,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:46:12,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721410452] [2024-06-27 22:46:12,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:12,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:46:12,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:12,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:46:12,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:46:12,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:46:12,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 308 transitions, 5262 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:12,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:12,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:46:12,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:13,485 INFO L124 PetriNetUnfolderBase]: 3662/6417 cut-off events. [2024-06-27 22:46:13,485 INFO L125 PetriNetUnfolderBase]: For 91403/91405 co-relation queries the response was YES. [2024-06-27 22:46:13,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40455 conditions, 6417 events. 3662/6417 cut-off events. For 91403/91405 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 47027 event pairs, 1200 based on Foata normal form. 1/6238 useless extension candidates. Maximal degree in co-relation 40372. Up to 5339 conditions per place. [2024-06-27 22:46:13,539 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 291 selfloop transitions, 25 changer transitions 0/333 dead transitions. [2024-06-27 22:46:13,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 333 transitions, 6108 flow [2024-06-27 22:46:13,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:46:13,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:46:13,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2024-06-27 22:46:13,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5869565217391305 [2024-06-27 22:46:13,540 INFO L175 Difference]: Start difference. First operand has 169 places, 308 transitions, 5262 flow. Second operand 6 states and 162 transitions. [2024-06-27 22:46:13,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 333 transitions, 6108 flow [2024-06-27 22:46:13,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 333 transitions, 5969 flow, removed 63 selfloop flow, removed 1 redundant places. [2024-06-27 22:46:13,832 INFO L231 Difference]: Finished difference. Result has 174 places, 316 transitions, 5344 flow [2024-06-27 22:46:13,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5153, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5344, PETRI_PLACES=174, PETRI_TRANSITIONS=316} [2024-06-27 22:46:13,833 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 122 predicate places. [2024-06-27 22:46:13,833 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 316 transitions, 5344 flow [2024-06-27 22:46:13,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:13,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:13,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:13,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:46:13,834 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 22:46:13,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:13,834 INFO L85 PathProgramCache]: Analyzing trace with hash -145298809, now seen corresponding path program 3 times [2024-06-27 22:46:13,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:13,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843602864] [2024-06-27 22:46:13,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:13,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:13,996 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 22:46:13,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:13,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843602864] [2024-06-27 22:46:13,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843602864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:13,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:13,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:46:13,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242491661] [2024-06-27 22:46:13,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:13,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:46:13,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:13,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:46:13,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:46:14,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:46:14,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 316 transitions, 5344 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:14,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:14,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:46:14,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:14,884 INFO L124 PetriNetUnfolderBase]: 3659/6413 cut-off events. [2024-06-27 22:46:14,884 INFO L125 PetriNetUnfolderBase]: For 92653/92655 co-relation queries the response was YES. [2024-06-27 22:46:14,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40409 conditions, 6413 events. 3659/6413 cut-off events. For 92653/92655 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 46981 event pairs, 1200 based on Foata normal form. 1/6234 useless extension candidates. Maximal degree in co-relation 40323. Up to 5329 conditions per place. [2024-06-27 22:46:14,943 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 292 selfloop transitions, 25 changer transitions 0/334 dead transitions. [2024-06-27 22:46:14,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 334 transitions, 6044 flow [2024-06-27 22:46:14,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:46:14,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:46:14,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2024-06-27 22:46:14,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6217391304347826 [2024-06-27 22:46:14,945 INFO L175 Difference]: Start difference. First operand has 174 places, 316 transitions, 5344 flow. Second operand 5 states and 143 transitions. [2024-06-27 22:46:14,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 334 transitions, 6044 flow [2024-06-27 22:46:15,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 334 transitions, 5915 flow, removed 43 selfloop flow, removed 3 redundant places. [2024-06-27 22:46:15,320 INFO L231 Difference]: Finished difference. Result has 176 places, 316 transitions, 5277 flow [2024-06-27 22:46:15,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5215, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5277, PETRI_PLACES=176, PETRI_TRANSITIONS=316} [2024-06-27 22:46:15,320 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 124 predicate places. [2024-06-27 22:46:15,321 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 316 transitions, 5277 flow [2024-06-27 22:46:15,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:15,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:15,321 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 22:46:15,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:46:15,321 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 22:46:15,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:15,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1435130865, now seen corresponding path program 1 times [2024-06-27 22:46:15,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:15,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52964049] [2024-06-27 22:46:15,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:15,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:15,689 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 22:46:15,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:15,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52964049] [2024-06-27 22:46:15,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52964049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:15,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:15,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:46:15,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064703033] [2024-06-27 22:46:15,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:15,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:46:15,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:15,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:46:15,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:46:15,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:46:15,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 316 transitions, 5277 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:15,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:15,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:46:15,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:17,034 INFO L124 PetriNetUnfolderBase]: 4400/7711 cut-off events. [2024-06-27 22:46:17,035 INFO L125 PetriNetUnfolderBase]: For 124603/124603 co-relation queries the response was YES. [2024-06-27 22:46:17,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48374 conditions, 7711 events. 4400/7711 cut-off events. For 124603/124603 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 58447 event pairs, 714 based on Foata normal form. 24/7537 useless extension candidates. Maximal degree in co-relation 48287. Up to 2605 conditions per place. [2024-06-27 22:46:17,106 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 197 selfloop transitions, 164 changer transitions 0/378 dead transitions. [2024-06-27 22:46:17,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 378 transitions, 6719 flow [2024-06-27 22:46:17,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:46:17,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:46:17,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 217 transitions. [2024-06-27 22:46:17,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6739130434782609 [2024-06-27 22:46:17,107 INFO L175 Difference]: Start difference. First operand has 176 places, 316 transitions, 5277 flow. Second operand 7 states and 217 transitions. [2024-06-27 22:46:17,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 378 transitions, 6719 flow [2024-06-27 22:46:17,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 378 transitions, 6656 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 22:46:17,469 INFO L231 Difference]: Finished difference. Result has 181 places, 323 transitions, 5801 flow [2024-06-27 22:46:17,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5214, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5801, PETRI_PLACES=181, PETRI_TRANSITIONS=323} [2024-06-27 22:46:17,470 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 129 predicate places. [2024-06-27 22:46:17,470 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 323 transitions, 5801 flow [2024-06-27 22:46:17,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:17,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:17,470 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 22:46:17,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:46:17,471 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 22:46:17,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:17,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1250110751, now seen corresponding path program 2 times [2024-06-27 22:46:17,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:17,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598389158] [2024-06-27 22:46:17,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:17,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:17,803 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 22:46:17,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:17,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598389158] [2024-06-27 22:46:17,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598389158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:17,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:17,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:46:17,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43984271] [2024-06-27 22:46:17,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:17,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:46:17,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:17,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:46:17,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:46:17,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:46:17,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 323 transitions, 5801 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:17,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:17,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:46:17,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:19,069 INFO L124 PetriNetUnfolderBase]: 4672/8363 cut-off events. [2024-06-27 22:46:19,069 INFO L125 PetriNetUnfolderBase]: For 152071/152073 co-relation queries the response was YES. [2024-06-27 22:46:19,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54777 conditions, 8363 events. 4672/8363 cut-off events. For 152071/152073 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 65718 event pairs, 1855 based on Foata normal form. 24/8126 useless extension candidates. Maximal degree in co-relation 54687. Up to 6488 conditions per place. [2024-06-27 22:46:19,150 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 301 selfloop transitions, 36 changer transitions 0/354 dead transitions. [2024-06-27 22:46:19,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 354 transitions, 6686 flow [2024-06-27 22:46:19,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:46:19,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:46:19,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 194 transitions. [2024-06-27 22:46:19,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6024844720496895 [2024-06-27 22:46:19,151 INFO L175 Difference]: Start difference. First operand has 181 places, 323 transitions, 5801 flow. Second operand 7 states and 194 transitions. [2024-06-27 22:46:19,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 354 transitions, 6686 flow [2024-06-27 22:46:19,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 354 transitions, 6408 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-27 22:46:19,604 INFO L231 Difference]: Finished difference. Result has 185 places, 323 transitions, 5601 flow [2024-06-27 22:46:19,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5526, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5601, PETRI_PLACES=185, PETRI_TRANSITIONS=323} [2024-06-27 22:46:19,605 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 133 predicate places. [2024-06-27 22:46:19,605 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 323 transitions, 5601 flow [2024-06-27 22:46:19,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:19,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:19,606 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 22:46:19,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:46:19,606 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:19,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:19,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1246385729, now seen corresponding path program 1 times [2024-06-27 22:46:19,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:19,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303346687] [2024-06-27 22:46:19,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:19,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:19,952 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 22:46:19,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:19,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303346687] [2024-06-27 22:46:19,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303346687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:19,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:19,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:46:19,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936008868] [2024-06-27 22:46:19,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:19,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:46:19,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:19,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:46:19,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:46:19,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:46:19,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 323 transitions, 5601 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:19,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:19,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:46:19,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:21,229 INFO L124 PetriNetUnfolderBase]: 4687/8395 cut-off events. [2024-06-27 22:46:21,229 INFO L125 PetriNetUnfolderBase]: For 139972/139974 co-relation queries the response was YES. [2024-06-27 22:46:21,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53623 conditions, 8395 events. 4687/8395 cut-off events. For 139972/139974 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 66037 event pairs, 1847 based on Foata normal form. 2/8136 useless extension candidates. Maximal degree in co-relation 53532. Up to 6911 conditions per place. [2024-06-27 22:46:21,297 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 305 selfloop transitions, 25 changer transitions 0/347 dead transitions. [2024-06-27 22:46:21,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 347 transitions, 6509 flow [2024-06-27 22:46:21,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:46:21,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:46:21,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 142 transitions. [2024-06-27 22:46:21,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6173913043478261 [2024-06-27 22:46:21,298 INFO L175 Difference]: Start difference. First operand has 185 places, 323 transitions, 5601 flow. Second operand 5 states and 142 transitions. [2024-06-27 22:46:21,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 347 transitions, 6509 flow [2024-06-27 22:46:21,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 347 transitions, 6438 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 22:46:21,689 INFO L231 Difference]: Finished difference. Result has 185 places, 329 transitions, 5731 flow [2024-06-27 22:46:21,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5530, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5731, PETRI_PLACES=185, PETRI_TRANSITIONS=329} [2024-06-27 22:46:21,690 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 133 predicate places. [2024-06-27 22:46:21,690 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 329 transitions, 5731 flow [2024-06-27 22:46:21,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:21,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:21,690 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 22:46:21,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:46:21,691 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:21,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:21,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1246391681, now seen corresponding path program 3 times [2024-06-27 22:46:21,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:21,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883620479] [2024-06-27 22:46:21,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:21,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:22,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:22,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:22,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883620479] [2024-06-27 22:46:22,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883620479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:22,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:22,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:46:22,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065347574] [2024-06-27 22:46:22,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:22,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:46:22,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:22,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:46:22,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:46:22,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:46:22,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 329 transitions, 5731 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:22,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:22,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:46:22,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:23,353 INFO L124 PetriNetUnfolderBase]: 4759/8530 cut-off events. [2024-06-27 22:46:23,353 INFO L125 PetriNetUnfolderBase]: For 148611/148613 co-relation queries the response was YES. [2024-06-27 22:46:23,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54896 conditions, 8530 events. 4759/8530 cut-off events. For 148611/148613 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 67264 event pairs, 1873 based on Foata normal form. 6/8269 useless extension candidates. Maximal degree in co-relation 54804. Up to 6962 conditions per place. [2024-06-27 22:46:23,438 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 312 selfloop transitions, 26 changer transitions 0/355 dead transitions. [2024-06-27 22:46:23,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 355 transitions, 6585 flow [2024-06-27 22:46:23,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:46:23,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:46:23,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-27 22:46:23,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5838509316770186 [2024-06-27 22:46:23,439 INFO L175 Difference]: Start difference. First operand has 185 places, 329 transitions, 5731 flow. Second operand 7 states and 188 transitions. [2024-06-27 22:46:23,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 355 transitions, 6585 flow [2024-06-27 22:46:23,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 355 transitions, 6522 flow, removed 27 selfloop flow, removed 1 redundant places. [2024-06-27 22:46:23,954 INFO L231 Difference]: Finished difference. Result has 191 places, 330 transitions, 5744 flow [2024-06-27 22:46:23,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5668, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5744, PETRI_PLACES=191, PETRI_TRANSITIONS=330} [2024-06-27 22:46:23,955 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 139 predicate places. [2024-06-27 22:46:23,955 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 330 transitions, 5744 flow [2024-06-27 22:46:23,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:23,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:23,956 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 22:46:23,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:46:23,956 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:23,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:23,956 INFO L85 PathProgramCache]: Analyzing trace with hash -209289119, now seen corresponding path program 2 times [2024-06-27 22:46:23,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:23,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279407026] [2024-06-27 22:46:23,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:23,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:23,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:24,249 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 22:46:24,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:24,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279407026] [2024-06-27 22:46:24,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279407026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:24,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:24,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:46:24,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726090623] [2024-06-27 22:46:24,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:24,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:46:24,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:24,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:46:24,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:46:24,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:46:24,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 330 transitions, 5744 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:24,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:24,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:46:24,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:25,423 INFO L124 PetriNetUnfolderBase]: 4754/8517 cut-off events. [2024-06-27 22:46:25,424 INFO L125 PetriNetUnfolderBase]: For 149384/149386 co-relation queries the response was YES. [2024-06-27 22:46:25,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55012 conditions, 8517 events. 4754/8517 cut-off events. For 149384/149386 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 67197 event pairs, 1871 based on Foata normal form. 2/8252 useless extension candidates. Maximal degree in co-relation 54918. Up to 7015 conditions per place. [2024-06-27 22:46:25,515 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 303 selfloop transitions, 24 changer transitions 0/344 dead transitions. [2024-06-27 22:46:25,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 344 transitions, 6450 flow [2024-06-27 22:46:25,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:46:25,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:46:25,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-06-27 22:46:25,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6358695652173914 [2024-06-27 22:46:25,516 INFO L175 Difference]: Start difference. First operand has 191 places, 330 transitions, 5744 flow. Second operand 4 states and 117 transitions. [2024-06-27 22:46:25,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 344 transitions, 6450 flow [2024-06-27 22:46:26,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 344 transitions, 6364 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 22:46:26,057 INFO L231 Difference]: Finished difference. Result has 190 places, 330 transitions, 5725 flow [2024-06-27 22:46:26,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5658, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=5725, PETRI_PLACES=190, PETRI_TRANSITIONS=330} [2024-06-27 22:46:26,058 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 138 predicate places. [2024-06-27 22:46:26,058 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 330 transitions, 5725 flow [2024-06-27 22:46:26,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:26,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:26,058 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 22:46:26,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:46:26,058 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:26,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:26,059 INFO L85 PathProgramCache]: Analyzing trace with hash -209295071, now seen corresponding path program 4 times [2024-06-27 22:46:26,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:26,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789764964] [2024-06-27 22:46:26,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:26,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:26,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:26,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:26,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789764964] [2024-06-27 22:46:26,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789764964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:26,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:26,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:46:26,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918075732] [2024-06-27 22:46:26,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:26,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:46:26,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:26,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:46:26,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:46:26,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:46:26,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 330 transitions, 5725 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:26,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:26,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:46:26,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:27,928 INFO L124 PetriNetUnfolderBase]: 5183/9249 cut-off events. [2024-06-27 22:46:27,929 INFO L125 PetriNetUnfolderBase]: For 166753/166753 co-relation queries the response was YES. [2024-06-27 22:46:27,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59776 conditions, 9249 events. 5183/9249 cut-off events. For 166753/166753 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 73599 event pairs, 1054 based on Foata normal form. 24/9008 useless extension candidates. Maximal degree in co-relation 59681. Up to 4504 conditions per place. [2024-06-27 22:46:28,016 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 232 selfloop transitions, 172 changer transitions 0/421 dead transitions. [2024-06-27 22:46:28,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 421 transitions, 7777 flow [2024-06-27 22:46:28,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:46:28,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:46:28,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2024-06-27 22:46:28,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6811594202898551 [2024-06-27 22:46:28,017 INFO L175 Difference]: Start difference. First operand has 190 places, 330 transitions, 5725 flow. Second operand 6 states and 188 transitions. [2024-06-27 22:46:28,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 421 transitions, 7777 flow [2024-06-27 22:46:28,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 421 transitions, 7716 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 22:46:28,560 INFO L231 Difference]: Finished difference. Result has 194 places, 376 transitions, 7085 flow [2024-06-27 22:46:28,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5668, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7085, PETRI_PLACES=194, PETRI_TRANSITIONS=376} [2024-06-27 22:46:28,560 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 142 predicate places. [2024-06-27 22:46:28,561 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 376 transitions, 7085 flow [2024-06-27 22:46:28,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:28,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:28,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:28,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:46:28,561 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:28,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:28,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1258713091, now seen corresponding path program 3 times [2024-06-27 22:46:28,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:28,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965984878] [2024-06-27 22:46:28,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:28,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:28,827 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 22:46:28,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:28,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965984878] [2024-06-27 22:46:28,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965984878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:28,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:28,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:46:28,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347184336] [2024-06-27 22:46:28,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:28,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:46:28,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:28,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:46:28,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:46:28,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:46:28,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 376 transitions, 7085 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:28,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:28,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:46:28,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:30,547 INFO L124 PetriNetUnfolderBase]: 5584/9961 cut-off events. [2024-06-27 22:46:30,547 INFO L125 PetriNetUnfolderBase]: For 181103/181103 co-relation queries the response was YES. [2024-06-27 22:46:30,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67092 conditions, 9961 events. 5584/9961 cut-off events. For 181103/181103 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 79456 event pairs, 1961 based on Foata normal form. 2/9673 useless extension candidates. Maximal degree in co-relation 66994. Up to 8231 conditions per place. [2024-06-27 22:46:30,639 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 371 selfloop transitions, 27 changer transitions 0/410 dead transitions. [2024-06-27 22:46:30,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 410 transitions, 8249 flow [2024-06-27 22:46:30,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:46:30,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:46:30,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-27 22:46:30,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5543478260869565 [2024-06-27 22:46:30,640 INFO L175 Difference]: Start difference. First operand has 194 places, 376 transitions, 7085 flow. Second operand 6 states and 153 transitions. [2024-06-27 22:46:30,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 410 transitions, 8249 flow [2024-06-27 22:46:31,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 410 transitions, 8078 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-27 22:46:31,339 INFO L231 Difference]: Finished difference. Result has 200 places, 385 transitions, 7198 flow [2024-06-27 22:46:31,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6918, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7198, PETRI_PLACES=200, PETRI_TRANSITIONS=385} [2024-06-27 22:46:31,340 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 148 predicate places. [2024-06-27 22:46:31,340 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 385 transitions, 7198 flow [2024-06-27 22:46:31,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:31,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:31,340 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 22:46:31,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:46:31,340 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:31,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:31,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1536581642, now seen corresponding path program 1 times [2024-06-27 22:46:31,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:31,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22050252] [2024-06-27 22:46:31,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:31,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:31,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:31,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:31,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22050252] [2024-06-27 22:46:31,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22050252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:31,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:31,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:46:31,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295232199] [2024-06-27 22:46:31,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:31,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:46:31,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:31,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:46:31,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:46:31,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:46:31,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 385 transitions, 7198 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:31,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:31,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:46:31,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:33,202 INFO L124 PetriNetUnfolderBase]: 5206/9292 cut-off events. [2024-06-27 22:46:33,202 INFO L125 PetriNetUnfolderBase]: For 173374/173376 co-relation queries the response was YES. [2024-06-27 22:46:33,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62750 conditions, 9292 events. 5206/9292 cut-off events. For 173374/173376 co-relation queries the response was YES. Maximal size of possible extension queue 604. Compared 74046 event pairs, 2059 based on Foata normal form. 2/9029 useless extension candidates. Maximal degree in co-relation 62649. Up to 7638 conditions per place. [2024-06-27 22:46:33,301 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 354 selfloop transitions, 43 changer transitions 0/414 dead transitions. [2024-06-27 22:46:33,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 414 transitions, 8274 flow [2024-06-27 22:46:33,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:46:33,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:46:33,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2024-06-27 22:46:33,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6159420289855072 [2024-06-27 22:46:33,302 INFO L175 Difference]: Start difference. First operand has 200 places, 385 transitions, 7198 flow. Second operand 6 states and 170 transitions. [2024-06-27 22:46:33,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 414 transitions, 8274 flow [2024-06-27 22:46:34,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 414 transitions, 8175 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-27 22:46:34,188 INFO L231 Difference]: Finished difference. Result has 203 places, 391 transitions, 7356 flow [2024-06-27 22:46:34,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7099, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7356, PETRI_PLACES=203, PETRI_TRANSITIONS=391} [2024-06-27 22:46:34,188 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 151 predicate places. [2024-06-27 22:46:34,189 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 391 transitions, 7356 flow [2024-06-27 22:46:34,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:34,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:34,189 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 22:46:34,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:46:34,189 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:34,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:34,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1421290472, now seen corresponding path program 2 times [2024-06-27 22:46:34,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:34,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314310996] [2024-06-27 22:46:34,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:34,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:34,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:34,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:34,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314310996] [2024-06-27 22:46:34,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314310996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:34,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:34,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:46:34,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854411163] [2024-06-27 22:46:34,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:34,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:46:34,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:34,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:46:34,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:46:34,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:46:34,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 391 transitions, 7356 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:34,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:34,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:46:34,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:36,240 INFO L124 PetriNetUnfolderBase]: 5221/9316 cut-off events. [2024-06-27 22:46:36,240 INFO L125 PetriNetUnfolderBase]: For 178599/178601 co-relation queries the response was YES. [2024-06-27 22:46:36,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63208 conditions, 9316 events. 5221/9316 cut-off events. For 178599/178601 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 74411 event pairs, 2063 based on Foata normal form. 2/9053 useless extension candidates. Maximal degree in co-relation 63107. Up to 7702 conditions per place. [2024-06-27 22:46:36,341 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 365 selfloop transitions, 31 changer transitions 0/413 dead transitions. [2024-06-27 22:46:36,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 413 transitions, 8284 flow [2024-06-27 22:46:36,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:46:36,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:46:36,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2024-06-27 22:46:36,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5978260869565217 [2024-06-27 22:46:36,342 INFO L175 Difference]: Start difference. First operand has 203 places, 391 transitions, 7356 flow. Second operand 6 states and 165 transitions. [2024-06-27 22:46:36,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 413 transitions, 8284 flow [2024-06-27 22:46:37,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 413 transitions, 8145 flow, removed 54 selfloop flow, removed 3 redundant places. [2024-06-27 22:46:37,187 INFO L231 Difference]: Finished difference. Result has 206 places, 394 transitions, 7379 flow [2024-06-27 22:46:37,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7237, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7379, PETRI_PLACES=206, PETRI_TRANSITIONS=394} [2024-06-27 22:46:37,188 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 154 predicate places. [2024-06-27 22:46:37,188 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 394 transitions, 7379 flow [2024-06-27 22:46:37,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:37,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:37,189 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 22:46:37,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:46:37,189 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:37,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:37,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1993902074, now seen corresponding path program 3 times [2024-06-27 22:46:37,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:37,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175195734] [2024-06-27 22:46:37,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:37,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:37,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:37,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:37,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:37,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175195734] [2024-06-27 22:46:37,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175195734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:37,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:37,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:46:37,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727023150] [2024-06-27 22:46:37,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:37,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:46:37,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:37,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:46:37,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:46:37,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:46:37,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 394 transitions, 7379 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:37,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:37,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:46:37,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:39,108 INFO L124 PetriNetUnfolderBase]: 5216/9309 cut-off events. [2024-06-27 22:46:39,108 INFO L125 PetriNetUnfolderBase]: For 176412/176414 co-relation queries the response was YES. [2024-06-27 22:46:39,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63021 conditions, 9309 events. 5216/9309 cut-off events. For 176412/176414 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 74445 event pairs, 2063 based on Foata normal form. 2/9046 useless extension candidates. Maximal degree in co-relation 62919. Up to 7699 conditions per place. [2024-06-27 22:46:39,203 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 367 selfloop transitions, 29 changer transitions 0/413 dead transitions. [2024-06-27 22:46:39,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 413 transitions, 8229 flow [2024-06-27 22:46:39,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:46:39,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:46:39,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2024-06-27 22:46:39,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6304347826086957 [2024-06-27 22:46:39,204 INFO L175 Difference]: Start difference. First operand has 206 places, 394 transitions, 7379 flow. Second operand 5 states and 145 transitions. [2024-06-27 22:46:39,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 413 transitions, 8229 flow [2024-06-27 22:46:39,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 413 transitions, 8100 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-27 22:46:39,847 INFO L231 Difference]: Finished difference. Result has 206 places, 394 transitions, 7323 flow [2024-06-27 22:46:39,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7250, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7323, PETRI_PLACES=206, PETRI_TRANSITIONS=394} [2024-06-27 22:46:39,847 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 154 predicate places. [2024-06-27 22:46:39,848 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 394 transitions, 7323 flow [2024-06-27 22:46:39,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:39,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:39,848 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 22:46:39,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:46:39,848 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:39,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:39,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1075291922, now seen corresponding path program 4 times [2024-06-27 22:46:39,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:39,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486392555] [2024-06-27 22:46:39,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:39,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:40,148 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 22:46:40,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:40,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486392555] [2024-06-27 22:46:40,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486392555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:40,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:40,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:46:40,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238049894] [2024-06-27 22:46:40,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:40,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:46:40,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:40,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:46:40,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:46:40,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:46:40,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 394 transitions, 7323 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:40,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:40,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:46:40,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:41,841 INFO L124 PetriNetUnfolderBase]: 5610/10002 cut-off events. [2024-06-27 22:46:41,841 INFO L125 PetriNetUnfolderBase]: For 181907/181907 co-relation queries the response was YES. [2024-06-27 22:46:41,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66827 conditions, 10002 events. 5610/10002 cut-off events. For 181907/181907 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 79818 event pairs, 1956 based on Foata normal form. 2/9717 useless extension candidates. Maximal degree in co-relation 66724. Up to 8221 conditions per place. [2024-06-27 22:46:41,952 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 381 selfloop transitions, 36 changer transitions 0/429 dead transitions. [2024-06-27 22:46:41,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 429 transitions, 8475 flow [2024-06-27 22:46:41,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:46:41,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:46:41,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-27 22:46:41,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5527950310559007 [2024-06-27 22:46:41,953 INFO L175 Difference]: Start difference. First operand has 206 places, 394 transitions, 7323 flow. Second operand 7 states and 178 transitions. [2024-06-27 22:46:41,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 429 transitions, 8475 flow [2024-06-27 22:46:42,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 429 transitions, 8391 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 22:46:42,773 INFO L231 Difference]: Finished difference. Result has 208 places, 399 transitions, 7455 flow [2024-06-27 22:46:42,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7239, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7455, PETRI_PLACES=208, PETRI_TRANSITIONS=399} [2024-06-27 22:46:42,773 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 156 predicate places. [2024-06-27 22:46:42,774 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 399 transitions, 7455 flow [2024-06-27 22:46:42,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:42,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:42,774 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 22:46:42,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:46:42,774 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:42,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:42,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1652215049, now seen corresponding path program 1 times [2024-06-27 22:46:42,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:42,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487710123] [2024-06-27 22:46:42,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:42,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:42,868 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 22:46:42,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:42,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487710123] [2024-06-27 22:46:42,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487710123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:42,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:42,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:46:42,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80302332] [2024-06-27 22:46:42,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:42,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:46:42,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:42,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:46:42,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:46:42,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 46 [2024-06-27 22:46:42,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 399 transitions, 7455 flow. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 22:46:42,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:42,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 46 [2024-06-27 22:46:42,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:44,753 INFO L124 PetriNetUnfolderBase]: 6746/11752 cut-off events. [2024-06-27 22:46:44,754 INFO L125 PetriNetUnfolderBase]: For 226686/227822 co-relation queries the response was YES. [2024-06-27 22:46:44,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76041 conditions, 11752 events. 6746/11752 cut-off events. For 226686/227822 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 95749 event pairs, 1889 based on Foata normal form. 436/11745 useless extension candidates. Maximal degree in co-relation 75938. Up to 5421 conditions per place. [2024-06-27 22:46:44,882 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 277 selfloop transitions, 37 changer transitions 260/666 dead transitions. [2024-06-27 22:46:44,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 666 transitions, 13078 flow [2024-06-27 22:46:44,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:46:44,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:46:44,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 231 transitions. [2024-06-27 22:46:44,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6277173913043478 [2024-06-27 22:46:44,883 INFO L175 Difference]: Start difference. First operand has 208 places, 399 transitions, 7455 flow. Second operand 8 states and 231 transitions. [2024-06-27 22:46:44,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 666 transitions, 13078 flow [2024-06-27 22:46:45,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 666 transitions, 12841 flow, removed 77 selfloop flow, removed 4 redundant places. [2024-06-27 22:46:45,771 INFO L231 Difference]: Finished difference. Result has 216 places, 366 transitions, 6722 flow [2024-06-27 22:46:45,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7304, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6722, PETRI_PLACES=216, PETRI_TRANSITIONS=366} [2024-06-27 22:46:45,771 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 164 predicate places. [2024-06-27 22:46:45,772 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 366 transitions, 6722 flow [2024-06-27 22:46:45,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 22:46:45,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:45,772 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 22:46:45,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:46:45,772 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:45,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:45,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1884823484, now seen corresponding path program 1 times [2024-06-27 22:46:45,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:45,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197568247] [2024-06-27 22:46:45,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:45,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:45,958 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 22:46:45,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:45,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197568247] [2024-06-27 22:46:45,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197568247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:45,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:45,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:46:45,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407380481] [2024-06-27 22:46:45,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:45,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:46:45,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:45,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:46:45,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:46:45,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:46:45,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 366 transitions, 6722 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:45,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:45,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:46:45,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:47,436 INFO L124 PetriNetUnfolderBase]: 4736/8404 cut-off events. [2024-06-27 22:46:47,436 INFO L125 PetriNetUnfolderBase]: For 161768/161768 co-relation queries the response was YES. [2024-06-27 22:46:47,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58552 conditions, 8404 events. 4736/8404 cut-off events. For 161768/161768 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 64963 event pairs, 1103 based on Foata normal form. 1/8347 useless extension candidates. Maximal degree in co-relation 58444. Up to 6149 conditions per place. [2024-06-27 22:46:47,512 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 319 selfloop transitions, 83 changer transitions 0/419 dead transitions. [2024-06-27 22:46:47,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 419 transitions, 8146 flow [2024-06-27 22:46:47,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:46:47,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:46:47,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 208 transitions. [2024-06-27 22:46:47,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6459627329192547 [2024-06-27 22:46:47,513 INFO L175 Difference]: Start difference. First operand has 216 places, 366 transitions, 6722 flow. Second operand 7 states and 208 transitions. [2024-06-27 22:46:47,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 419 transitions, 8146 flow [2024-06-27 22:46:48,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 419 transitions, 8021 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-27 22:46:48,088 INFO L231 Difference]: Finished difference. Result has 214 places, 381 transitions, 7158 flow [2024-06-27 22:46:48,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6621, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7158, PETRI_PLACES=214, PETRI_TRANSITIONS=381} [2024-06-27 22:46:48,088 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 162 predicate places. [2024-06-27 22:46:48,088 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 381 transitions, 7158 flow [2024-06-27 22:46:48,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:48,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:48,089 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 22:46:48,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:46:48,089 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:48,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:48,089 INFO L85 PathProgramCache]: Analyzing trace with hash -270574120, now seen corresponding path program 2 times [2024-06-27 22:46:48,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:48,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818280262] [2024-06-27 22:46:48,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:48,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:48,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:48,303 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 22:46:48,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:48,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818280262] [2024-06-27 22:46:48,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818280262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:48,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:48,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:46:48,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803445821] [2024-06-27 22:46:48,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:48,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:46:48,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:48,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:46:48,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:46:48,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:46:48,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 381 transitions, 7158 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:48,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:48,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:46:48,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:49,792 INFO L124 PetriNetUnfolderBase]: 4733/8393 cut-off events. [2024-06-27 22:46:49,792 INFO L125 PetriNetUnfolderBase]: For 174613/174613 co-relation queries the response was YES. [2024-06-27 22:46:49,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58218 conditions, 8393 events. 4733/8393 cut-off events. For 174613/174613 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 64697 event pairs, 1342 based on Foata normal form. 1/8154 useless extension candidates. Maximal degree in co-relation 58112. Up to 6190 conditions per place. [2024-06-27 22:46:49,878 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 322 selfloop transitions, 74 changer transitions 0/413 dead transitions. [2024-06-27 22:46:49,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 413 transitions, 8140 flow [2024-06-27 22:46:49,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:46:49,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:46:49,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 201 transitions. [2024-06-27 22:46:49,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6242236024844721 [2024-06-27 22:46:49,879 INFO L175 Difference]: Start difference. First operand has 214 places, 381 transitions, 7158 flow. Second operand 7 states and 201 transitions. [2024-06-27 22:46:49,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 413 transitions, 8140 flow [2024-06-27 22:46:50,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 413 transitions, 7962 flow, removed 52 selfloop flow, removed 2 redundant places. [2024-06-27 22:46:50,586 INFO L231 Difference]: Finished difference. Result has 219 places, 381 transitions, 7136 flow [2024-06-27 22:46:50,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6980, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7136, PETRI_PLACES=219, PETRI_TRANSITIONS=381} [2024-06-27 22:46:50,587 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 167 predicate places. [2024-06-27 22:46:50,587 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 381 transitions, 7136 flow [2024-06-27 22:46:50,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:50,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:50,587 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 22:46:50,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:46:50,588 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:50,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:50,588 INFO L85 PathProgramCache]: Analyzing trace with hash -2038191202, now seen corresponding path program 3 times [2024-06-27 22:46:50,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:50,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679939338] [2024-06-27 22:46:50,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:50,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:50,761 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 22:46:50,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:50,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679939338] [2024-06-27 22:46:50,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679939338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:50,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:50,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:46:50,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644815999] [2024-06-27 22:46:50,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:50,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:46:50,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:50,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:46:50,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:46:50,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:46:50,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 381 transitions, 7136 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:50,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:50,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:46:50,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:52,250 INFO L124 PetriNetUnfolderBase]: 4828/8548 cut-off events. [2024-06-27 22:46:52,250 INFO L125 PetriNetUnfolderBase]: For 180412/180412 co-relation queries the response was YES. [2024-06-27 22:46:52,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59918 conditions, 8548 events. 4828/8548 cut-off events. For 180412/180412 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 66065 event pairs, 1350 based on Foata normal form. 1/8300 useless extension candidates. Maximal degree in co-relation 59810. Up to 6366 conditions per place. [2024-06-27 22:46:52,341 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 342 selfloop transitions, 80 changer transitions 0/439 dead transitions. [2024-06-27 22:46:52,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 439 transitions, 8751 flow [2024-06-27 22:46:52,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:46:52,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:46:52,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-06-27 22:46:52,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6149068322981367 [2024-06-27 22:46:52,342 INFO L175 Difference]: Start difference. First operand has 219 places, 381 transitions, 7136 flow. Second operand 7 states and 198 transitions. [2024-06-27 22:46:52,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 439 transitions, 8751 flow [2024-06-27 22:46:52,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 439 transitions, 8493 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-27 22:46:52,990 INFO L231 Difference]: Finished difference. Result has 223 places, 408 transitions, 7671 flow [2024-06-27 22:46:52,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6916, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7671, PETRI_PLACES=223, PETRI_TRANSITIONS=408} [2024-06-27 22:46:52,993 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 171 predicate places. [2024-06-27 22:46:52,993 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 408 transitions, 7671 flow [2024-06-27 22:46:52,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:52,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:52,993 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 22:46:52,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:46:52,993 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:52,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:52,994 INFO L85 PathProgramCache]: Analyzing trace with hash 850013896, now seen corresponding path program 4 times [2024-06-27 22:46:52,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:52,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109622195] [2024-06-27 22:46:52,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:52,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:53,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:53,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:53,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109622195] [2024-06-27 22:46:53,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109622195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:53,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:53,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:46:53,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849185328] [2024-06-27 22:46:53,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:53,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:46:53,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:53,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:46:53,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:46:53,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:46:53,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 408 transitions, 7671 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:53,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:53,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:46:53,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:54,739 INFO L124 PetriNetUnfolderBase]: 4914/8679 cut-off events. [2024-06-27 22:46:54,739 INFO L125 PetriNetUnfolderBase]: For 183112/183112 co-relation queries the response was YES. [2024-06-27 22:46:54,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61415 conditions, 8679 events. 4914/8679 cut-off events. For 183112/183112 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 67004 event pairs, 1106 based on Foata normal form. 1/8459 useless extension candidates. Maximal degree in co-relation 61305. Up to 4846 conditions per place. [2024-06-27 22:46:54,829 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 197 selfloop transitions, 250 changer transitions 0/464 dead transitions. [2024-06-27 22:46:54,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 464 transitions, 9369 flow [2024-06-27 22:46:54,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:46:54,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:46:54,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 211 transitions. [2024-06-27 22:46:54,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65527950310559 [2024-06-27 22:46:54,831 INFO L175 Difference]: Start difference. First operand has 223 places, 408 transitions, 7671 flow. Second operand 7 states and 211 transitions. [2024-06-27 22:46:54,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 464 transitions, 9369 flow [2024-06-27 22:46:55,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 464 transitions, 9151 flow, removed 64 selfloop flow, removed 3 redundant places. [2024-06-27 22:46:55,564 INFO L231 Difference]: Finished difference. Result has 228 places, 424 transitions, 8462 flow [2024-06-27 22:46:55,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7453, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8462, PETRI_PLACES=228, PETRI_TRANSITIONS=424} [2024-06-27 22:46:55,564 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 176 predicate places. [2024-06-27 22:46:55,565 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 424 transitions, 8462 flow [2024-06-27 22:46:55,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:55,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:55,565 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 22:46:55,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:46:55,565 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:55,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:55,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1234127146, now seen corresponding path program 5 times [2024-06-27 22:46:55,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:55,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940059735] [2024-06-27 22:46:55,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:55,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:55,762 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 22:46:55,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:55,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940059735] [2024-06-27 22:46:55,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940059735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:55,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:55,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:46:55,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611537655] [2024-06-27 22:46:55,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:55,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:46:55,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:55,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:46:55,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:46:55,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:46:55,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 424 transitions, 8462 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:55,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:55,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:46:55,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:57,284 INFO L124 PetriNetUnfolderBase]: 4974/8764 cut-off events. [2024-06-27 22:46:57,284 INFO L125 PetriNetUnfolderBase]: For 198834/198834 co-relation queries the response was YES. [2024-06-27 22:46:57,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64173 conditions, 8764 events. 4974/8764 cut-off events. For 198834/198834 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 67648 event pairs, 1107 based on Foata normal form. 1/8544 useless extension candidates. Maximal degree in co-relation 64060. Up to 4908 conditions per place. [2024-06-27 22:46:57,378 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 192 selfloop transitions, 262 changer transitions 0/471 dead transitions. [2024-06-27 22:46:57,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 471 transitions, 10068 flow [2024-06-27 22:46:57,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:46:57,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:46:57,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 207 transitions. [2024-06-27 22:46:57,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-06-27 22:46:57,379 INFO L175 Difference]: Start difference. First operand has 228 places, 424 transitions, 8462 flow. Second operand 7 states and 207 transitions. [2024-06-27 22:46:57,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 471 transitions, 10068 flow [2024-06-27 22:46:58,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 471 transitions, 9380 flow, removed 93 selfloop flow, removed 4 redundant places. [2024-06-27 22:46:58,301 INFO L231 Difference]: Finished difference. Result has 232 places, 435 transitions, 8630 flow [2024-06-27 22:46:58,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7832, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=251, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8630, PETRI_PLACES=232, PETRI_TRANSITIONS=435} [2024-06-27 22:46:58,302 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 180 predicate places. [2024-06-27 22:46:58,302 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 435 transitions, 8630 flow [2024-06-27 22:46:58,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:58,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:58,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:58,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:46:58,303 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:58,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:58,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1482176568, now seen corresponding path program 6 times [2024-06-27 22:46:58,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:58,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439437652] [2024-06-27 22:46:58,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:58,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:58,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:58,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:58,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439437652] [2024-06-27 22:46:58,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439437652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:58,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:58,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:46:58,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503739548] [2024-06-27 22:46:58,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:58,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:46:58,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:58,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:46:58,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:46:58,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:46:58,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 435 transitions, 8630 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:58,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:58,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:46:58,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:00,066 INFO L124 PetriNetUnfolderBase]: 5023/8847 cut-off events. [2024-06-27 22:47:00,067 INFO L125 PetriNetUnfolderBase]: For 211706/211706 co-relation queries the response was YES. [2024-06-27 22:47:00,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64897 conditions, 8847 events. 5023/8847 cut-off events. For 211706/211706 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 68244 event pairs, 1153 based on Foata normal form. 1/8607 useless extension candidates. Maximal degree in co-relation 64782. Up to 4959 conditions per place. [2024-06-27 22:47:00,163 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 223 selfloop transitions, 249 changer transitions 0/489 dead transitions. [2024-06-27 22:47:00,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 489 transitions, 10394 flow [2024-06-27 22:47:00,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:47:00,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:47:00,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 211 transitions. [2024-06-27 22:47:00,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65527950310559 [2024-06-27 22:47:00,166 INFO L175 Difference]: Start difference. First operand has 232 places, 435 transitions, 8630 flow. Second operand 7 states and 211 transitions. [2024-06-27 22:47:00,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 489 transitions, 10394 flow [2024-06-27 22:47:01,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 489 transitions, 9888 flow, removed 60 selfloop flow, removed 3 redundant places. [2024-06-27 22:47:01,117 INFO L231 Difference]: Finished difference. Result has 236 places, 450 transitions, 9027 flow [2024-06-27 22:47:01,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8163, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9027, PETRI_PLACES=236, PETRI_TRANSITIONS=450} [2024-06-27 22:47:01,118 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 184 predicate places. [2024-06-27 22:47:01,118 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 450 transitions, 9027 flow [2024-06-27 22:47:01,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:01,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:01,118 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 22:47:01,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:47:01,118 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:47:01,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:01,119 INFO L85 PathProgramCache]: Analyzing trace with hash -141682070, now seen corresponding path program 7 times [2024-06-27 22:47:01,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:01,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595849854] [2024-06-27 22:47:01,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:01,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:01,317 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 22:47:01,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:01,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595849854] [2024-06-27 22:47:01,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595849854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:01,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:01,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:47:01,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322248651] [2024-06-27 22:47:01,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:01,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:47:01,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:01,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:47:01,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:47:01,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:47:01,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 450 transitions, 9027 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:01,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:01,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:47:01,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:02,983 INFO L124 PetriNetUnfolderBase]: 5047/8855 cut-off events. [2024-06-27 22:47:02,983 INFO L125 PetriNetUnfolderBase]: For 215679/215679 co-relation queries the response was YES. [2024-06-27 22:47:03,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65214 conditions, 8855 events. 5047/8855 cut-off events. For 215679/215679 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 68032 event pairs, 1155 based on Foata normal form. 1/8626 useless extension candidates. Maximal degree in co-relation 65098. Up to 5760 conditions per place. [2024-06-27 22:47:03,089 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 298 selfloop transitions, 180 changer transitions 0/495 dead transitions. [2024-06-27 22:47:03,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 495 transitions, 10499 flow [2024-06-27 22:47:03,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:47:03,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:47:03,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 201 transitions. [2024-06-27 22:47:03,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6242236024844721 [2024-06-27 22:47:03,091 INFO L175 Difference]: Start difference. First operand has 236 places, 450 transitions, 9027 flow. Second operand 7 states and 201 transitions. [2024-06-27 22:47:03,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 495 transitions, 10499 flow [2024-06-27 22:47:04,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 495 transitions, 10081 flow, removed 55 selfloop flow, removed 3 redundant places. [2024-06-27 22:47:04,146 INFO L231 Difference]: Finished difference. Result has 240 places, 463 transitions, 9242 flow [2024-06-27 22:47:04,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8644, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9242, PETRI_PLACES=240, PETRI_TRANSITIONS=463} [2024-06-27 22:47:04,147 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 188 predicate places. [2024-06-27 22:47:04,147 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 463 transitions, 9242 flow [2024-06-27 22:47:04,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:04,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:04,148 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 22:47:04,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:47:04,148 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:47:04,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:04,148 INFO L85 PathProgramCache]: Analyzing trace with hash 513186120, now seen corresponding path program 8 times [2024-06-27 22:47:04,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:04,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805599036] [2024-06-27 22:47:04,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:04,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:04,353 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 22:47:04,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:04,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805599036] [2024-06-27 22:47:04,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805599036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:04,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:04,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:47:04,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542238694] [2024-06-27 22:47:04,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:04,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:47:04,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:04,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:47:04,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:47:04,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:47:04,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 463 transitions, 9242 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:04,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:04,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:47:04,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:05,990 INFO L124 PetriNetUnfolderBase]: 5044/8862 cut-off events. [2024-06-27 22:47:05,990 INFO L125 PetriNetUnfolderBase]: For 220093/220093 co-relation queries the response was YES. [2024-06-27 22:47:06,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65208 conditions, 8862 events. 5044/8862 cut-off events. For 220093/220093 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 68177 event pairs, 1138 based on Foata normal form. 1/8636 useless extension candidates. Maximal degree in co-relation 65091. Up to 5673 conditions per place. [2024-06-27 22:47:06,088 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 272 selfloop transitions, 204 changer transitions 0/493 dead transitions. [2024-06-27 22:47:06,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 493 transitions, 10524 flow [2024-06-27 22:47:06,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:47:06,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:47:06,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions. [2024-06-27 22:47:06,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6211180124223602 [2024-06-27 22:47:06,089 INFO L175 Difference]: Start difference. First operand has 240 places, 463 transitions, 9242 flow. Second operand 7 states and 200 transitions. [2024-06-27 22:47:06,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 493 transitions, 10524 flow [2024-06-27 22:47:07,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 493 transitions, 10077 flow, removed 49 selfloop flow, removed 4 redundant places. [2024-06-27 22:47:07,089 INFO L231 Difference]: Finished difference. Result has 243 places, 463 transitions, 9212 flow [2024-06-27 22:47:07,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8795, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9212, PETRI_PLACES=243, PETRI_TRANSITIONS=463} [2024-06-27 22:47:07,090 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 191 predicate places. [2024-06-27 22:47:07,090 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 463 transitions, 9212 flow [2024-06-27 22:47:07,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:07,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:07,091 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 22:47:07,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:47:07,091 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:47:07,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:07,092 INFO L85 PathProgramCache]: Analyzing trace with hash -131505080, now seen corresponding path program 9 times [2024-06-27 22:47:07,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:07,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29255352] [2024-06-27 22:47:07,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:07,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:07,302 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 22:47:07,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:07,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29255352] [2024-06-27 22:47:07,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29255352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:07,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:07,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:47:07,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558326516] [2024-06-27 22:47:07,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:07,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:47:07,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:07,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:47:07,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:47:07,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:47:07,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 463 transitions, 9212 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:07,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:07,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:47:07,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:08,983 INFO L124 PetriNetUnfolderBase]: 5041/8842 cut-off events. [2024-06-27 22:47:08,984 INFO L125 PetriNetUnfolderBase]: For 211373/211373 co-relation queries the response was YES. [2024-06-27 22:47:09,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65224 conditions, 8842 events. 5041/8842 cut-off events. For 211373/211373 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 68074 event pairs, 1136 based on Foata normal form. 1/8620 useless extension candidates. Maximal degree in co-relation 65106. Up to 5670 conditions per place. [2024-06-27 22:47:09,086 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 274 selfloop transitions, 206 changer transitions 0/497 dead transitions. [2024-06-27 22:47:09,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 497 transitions, 10514 flow [2024-06-27 22:47:09,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:47:09,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:47:09,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 248 transitions. [2024-06-27 22:47:09,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5990338164251208 [2024-06-27 22:47:09,087 INFO L175 Difference]: Start difference. First operand has 243 places, 463 transitions, 9212 flow. Second operand 9 states and 248 transitions. [2024-06-27 22:47:09,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 497 transitions, 10514 flow [2024-06-27 22:47:10,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 497 transitions, 9622 flow, removed 99 selfloop flow, removed 7 redundant places. [2024-06-27 22:47:10,325 INFO L231 Difference]: Finished difference. Result has 245 places, 463 transitions, 8741 flow [2024-06-27 22:47:10,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8320, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8741, PETRI_PLACES=245, PETRI_TRANSITIONS=463} [2024-06-27 22:47:10,326 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 193 predicate places. [2024-06-27 22:47:10,326 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 463 transitions, 8741 flow [2024-06-27 22:47:10,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:10,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:10,326 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 22:47:10,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 22:47:10,326 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:47:10,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:10,327 INFO L85 PathProgramCache]: Analyzing trace with hash -506122146, now seen corresponding path program 10 times [2024-06-27 22:47:10,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:10,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549272274] [2024-06-27 22:47:10,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:10,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:10,492 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 22:47:10,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:10,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549272274] [2024-06-27 22:47:10,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549272274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:10,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:10,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:47:10,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609928749] [2024-06-27 22:47:10,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:10,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:47:10,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:10,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:47:10,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:47:10,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:47:10,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 463 transitions, 8741 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:10,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:10,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:47:10,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:12,101 INFO L124 PetriNetUnfolderBase]: 5035/8832 cut-off events. [2024-06-27 22:47:12,101 INFO L125 PetriNetUnfolderBase]: For 204362/204362 co-relation queries the response was YES. [2024-06-27 22:47:12,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63200 conditions, 8832 events. 5035/8832 cut-off events. For 204362/204362 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 68039 event pairs, 1107 based on Foata normal form. 3/8600 useless extension candidates. Maximal degree in co-relation 63084. Up to 6541 conditions per place. [2024-06-27 22:47:12,208 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 393 selfloop transitions, 88 changer transitions 0/498 dead transitions. [2024-06-27 22:47:12,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 498 transitions, 9905 flow [2024-06-27 22:47:12,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:47:12,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:47:12,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2024-06-27 22:47:12,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6630434782608695 [2024-06-27 22:47:12,209 INFO L175 Difference]: Start difference. First operand has 245 places, 463 transitions, 8741 flow. Second operand 6 states and 183 transitions. [2024-06-27 22:47:12,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 498 transitions, 9905 flow [2024-06-27 22:47:13,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 498 transitions, 9371 flow, removed 63 selfloop flow, removed 6 redundant places. [2024-06-27 22:47:13,148 INFO L231 Difference]: Finished difference. Result has 245 places, 463 transitions, 8402 flow [2024-06-27 22:47:13,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8207, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8402, PETRI_PLACES=245, PETRI_TRANSITIONS=463} [2024-06-27 22:47:13,149 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 193 predicate places. [2024-06-27 22:47:13,149 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 463 transitions, 8402 flow [2024-06-27 22:47:13,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:13,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:13,149 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 22:47:13,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 22:47:13,150 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:47:13,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:13,150 INFO L85 PathProgramCache]: Analyzing trace with hash 730615658, now seen corresponding path program 11 times [2024-06-27 22:47:13,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:13,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630839581] [2024-06-27 22:47:13,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:13,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:13,339 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 22:47:13,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:13,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630839581] [2024-06-27 22:47:13,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630839581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:13,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:13,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:47:13,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704183680] [2024-06-27 22:47:13,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:13,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:47:13,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:13,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:47:13,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:47:13,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:47:13,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 463 transitions, 8402 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:13,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:13,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:47:13,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:14,998 INFO L124 PetriNetUnfolderBase]: 5025/8827 cut-off events. [2024-06-27 22:47:14,998 INFO L125 PetriNetUnfolderBase]: For 212590/212590 co-relation queries the response was YES. [2024-06-27 22:47:15,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62228 conditions, 8827 events. 5025/8827 cut-off events. For 212590/212590 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 67959 event pairs, 1147 based on Foata normal form. 3/8607 useless extension candidates. Maximal degree in co-relation 62111. Up to 5226 conditions per place. [2024-06-27 22:47:15,094 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 288 selfloop transitions, 195 changer transitions 0/500 dead transitions. [2024-06-27 22:47:15,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 500 transitions, 9736 flow [2024-06-27 22:47:15,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:47:15,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:47:15,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2024-06-27 22:47:15,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6739130434782609 [2024-06-27 22:47:15,095 INFO L175 Difference]: Start difference. First operand has 245 places, 463 transitions, 8402 flow. Second operand 6 states and 186 transitions. [2024-06-27 22:47:15,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 500 transitions, 9736 flow [2024-06-27 22:47:15,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 500 transitions, 9470 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-27 22:47:15,993 INFO L231 Difference]: Finished difference. Result has 246 places, 463 transitions, 8548 flow [2024-06-27 22:47:15,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8140, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8548, PETRI_PLACES=246, PETRI_TRANSITIONS=463} [2024-06-27 22:47:15,994 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 194 predicate places. [2024-06-27 22:47:15,994 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 463 transitions, 8548 flow [2024-06-27 22:47:15,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:15,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:15,994 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 22:47:15,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 22:47:15,994 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:47:15,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:15,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1667116424, now seen corresponding path program 12 times [2024-06-27 22:47:15,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:15,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902757859] [2024-06-27 22:47:15,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:15,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:16,185 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 22:47:16,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:16,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902757859] [2024-06-27 22:47:16,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902757859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:16,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:16,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:47:16,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471634960] [2024-06-27 22:47:16,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:16,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:47:16,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:16,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:47:16,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:47:16,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:47:16,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 463 transitions, 8548 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:16,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:16,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:47:16,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:17,756 INFO L124 PetriNetUnfolderBase]: 5014/8807 cut-off events. [2024-06-27 22:47:17,756 INFO L125 PetriNetUnfolderBase]: For 208973/208973 co-relation queries the response was YES. [2024-06-27 22:47:17,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62499 conditions, 8807 events. 5014/8807 cut-off events. For 208973/208973 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 67755 event pairs, 1171 based on Foata normal form. 3/8571 useless extension candidates. Maximal degree in co-relation 62381. Up to 5214 conditions per place. [2024-06-27 22:47:17,852 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 306 selfloop transitions, 175 changer transitions 0/498 dead transitions. [2024-06-27 22:47:17,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 498 transitions, 9792 flow [2024-06-27 22:47:17,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:47:17,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:47:17,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-06-27 22:47:17,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6702898550724637 [2024-06-27 22:47:17,853 INFO L175 Difference]: Start difference. First operand has 246 places, 463 transitions, 8548 flow. Second operand 6 states and 185 transitions. [2024-06-27 22:47:17,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 498 transitions, 9792 flow [2024-06-27 22:47:18,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 498 transitions, 9320 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-27 22:47:18,910 INFO L231 Difference]: Finished difference. Result has 247 places, 463 transitions, 8444 flow [2024-06-27 22:47:18,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8076, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8444, PETRI_PLACES=247, PETRI_TRANSITIONS=463} [2024-06-27 22:47:18,911 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 195 predicate places. [2024-06-27 22:47:18,911 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 463 transitions, 8444 flow [2024-06-27 22:47:18,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:18,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:18,912 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 22:47:18,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 22:47:18,912 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:47:18,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:18,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1234588674, now seen corresponding path program 1 times [2024-06-27 22:47:18,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:18,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054627000] [2024-06-27 22:47:18,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:18,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:19,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:19,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:19,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054627000] [2024-06-27 22:47:19,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054627000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:19,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:19,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:47:19,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746354271] [2024-06-27 22:47:19,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:19,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:47:19,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:19,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:47:19,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:47:19,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:47:19,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 463 transitions, 8444 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:19,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:19,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:47:19,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:21,216 INFO L124 PetriNetUnfolderBase]: 5677/10115 cut-off events. [2024-06-27 22:47:21,216 INFO L125 PetriNetUnfolderBase]: For 260935/260935 co-relation queries the response was YES. [2024-06-27 22:47:21,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69663 conditions, 10115 events. 5677/10115 cut-off events. For 260935/260935 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 81425 event pairs, 1124 based on Foata normal form. 34/9888 useless extension candidates. Maximal degree in co-relation 69544. Up to 4610 conditions per place. [2024-06-27 22:47:21,326 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 244 selfloop transitions, 264 changer transitions 0/525 dead transitions. [2024-06-27 22:47:21,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 525 transitions, 10476 flow [2024-06-27 22:47:21,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:47:21,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:47:21,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 212 transitions. [2024-06-27 22:47:21,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6583850931677019 [2024-06-27 22:47:21,327 INFO L175 Difference]: Start difference. First operand has 247 places, 463 transitions, 8444 flow. Second operand 7 states and 212 transitions. [2024-06-27 22:47:21,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 525 transitions, 10476 flow [2024-06-27 22:47:22,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 525 transitions, 10282 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:47:22,452 INFO L231 Difference]: Finished difference. Result has 254 places, 477 transitions, 9490 flow [2024-06-27 22:47:22,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8250, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=251, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9490, PETRI_PLACES=254, PETRI_TRANSITIONS=477} [2024-06-27 22:47:22,452 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 202 predicate places. [2024-06-27 22:47:22,452 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 477 transitions, 9490 flow [2024-06-27 22:47:22,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:22,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:22,453 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 22:47:22,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 22:47:22,453 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:47:22,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:22,453 INFO L85 PathProgramCache]: Analyzing trace with hash 513647648, now seen corresponding path program 2 times [2024-06-27 22:47:22,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:22,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921944402] [2024-06-27 22:47:22,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:22,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:22,985 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 22:47:22,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:22,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921944402] [2024-06-27 22:47:22,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921944402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:22,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:22,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:47:22,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665188367] [2024-06-27 22:47:22,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:22,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:47:22,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:22,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:47:22,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:47:23,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:47:23,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 477 transitions, 9490 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:23,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:23,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:47:23,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:25,076 INFO L124 PetriNetUnfolderBase]: 5980/10735 cut-off events. [2024-06-27 22:47:25,076 INFO L125 PetriNetUnfolderBase]: For 315443/315443 co-relation queries the response was YES. [2024-06-27 22:47:25,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78399 conditions, 10735 events. 5980/10735 cut-off events. For 315443/315443 co-relation queries the response was YES. Maximal size of possible extension queue 705. Compared 88020 event pairs, 1327 based on Foata normal form. 34/10486 useless extension candidates. Maximal degree in co-relation 78276. Up to 5936 conditions per place. [2024-06-27 22:47:25,207 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 324 selfloop transitions, 189 changer transitions 0/530 dead transitions. [2024-06-27 22:47:25,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 530 transitions, 11467 flow [2024-06-27 22:47:25,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:47:25,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:47:25,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 207 transitions. [2024-06-27 22:47:25,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-06-27 22:47:25,208 INFO L175 Difference]: Start difference. First operand has 254 places, 477 transitions, 9490 flow. Second operand 7 states and 207 transitions. [2024-06-27 22:47:25,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 530 transitions, 11467 flow [2024-06-27 22:47:26,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 530 transitions, 11302 flow, removed 67 selfloop flow, removed 1 redundant places. [2024-06-27 22:47:26,663 INFO L231 Difference]: Finished difference. Result has 261 places, 486 transitions, 10030 flow [2024-06-27 22:47:26,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9361, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10030, PETRI_PLACES=261, PETRI_TRANSITIONS=486} [2024-06-27 22:47:26,664 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 209 predicate places. [2024-06-27 22:47:26,664 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 486 transitions, 10030 flow [2024-06-27 22:47:26,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:26,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:26,665 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 22:47:26,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 22:47:26,665 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:47:26,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:26,665 INFO L85 PathProgramCache]: Analyzing trace with hash 736641376, now seen corresponding path program 3 times [2024-06-27 22:47:26,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:26,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713808019] [2024-06-27 22:47:26,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:26,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:27,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:27,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:27,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713808019] [2024-06-27 22:47:27,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713808019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:27,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:27,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:47:27,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081236657] [2024-06-27 22:47:27,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:27,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:47:27,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:27,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:47:27,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:47:27,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:47:27,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 486 transitions, 10030 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:27,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:27,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:47:27,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:29,156 INFO L124 PetriNetUnfolderBase]: 6128/11070 cut-off events. [2024-06-27 22:47:29,157 INFO L125 PetriNetUnfolderBase]: For 307474/307474 co-relation queries the response was YES. [2024-06-27 22:47:29,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80824 conditions, 11070 events. 6128/11070 cut-off events. For 307474/307474 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 91791 event pairs, 1321 based on Foata normal form. 16/10791 useless extension candidates. Maximal degree in co-relation 80698. Up to 5425 conditions per place. [2024-06-27 22:47:29,277 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 328 selfloop transitions, 187 changer transitions 0/532 dead transitions. [2024-06-27 22:47:29,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 532 transitions, 11690 flow [2024-06-27 22:47:29,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:47:29,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:47:29,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2024-06-27 22:47:29,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6811594202898551 [2024-06-27 22:47:29,279 INFO L175 Difference]: Start difference. First operand has 261 places, 486 transitions, 10030 flow. Second operand 6 states and 188 transitions. [2024-06-27 22:47:29,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 532 transitions, 11690 flow [2024-06-27 22:47:30,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 532 transitions, 11324 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-27 22:47:30,766 INFO L231 Difference]: Finished difference. Result has 264 places, 487 transitions, 10104 flow [2024-06-27 22:47:30,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9668, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10104, PETRI_PLACES=264, PETRI_TRANSITIONS=487} [2024-06-27 22:47:30,767 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 212 predicate places. [2024-06-27 22:47:30,767 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 487 transitions, 10104 flow [2024-06-27 22:47:30,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:30,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:30,767 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 22:47:30,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 22:47:30,767 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:47:30,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:30,768 INFO L85 PathProgramCache]: Analyzing trace with hash 547374005, now seen corresponding path program 1 times [2024-06-27 22:47:30,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:30,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284388267] [2024-06-27 22:47:30,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:30,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:31,089 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 22:47:31,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:31,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284388267] [2024-06-27 22:47:31,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284388267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:31,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:31,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:47:31,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100554920] [2024-06-27 22:47:31,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:31,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:47:31,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:31,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:47:31,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:47:31,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:47:31,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 487 transitions, 10104 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:31,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:31,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:47:31,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:33,499 INFO L124 PetriNetUnfolderBase]: 6792/11984 cut-off events. [2024-06-27 22:47:33,499 INFO L125 PetriNetUnfolderBase]: For 305848/305848 co-relation queries the response was YES. [2024-06-27 22:47:33,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89181 conditions, 11984 events. 6792/11984 cut-off events. For 305848/305848 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 97312 event pairs, 1450 based on Foata normal form. 2/11734 useless extension candidates. Maximal degree in co-relation 89053. Up to 8483 conditions per place. [2024-06-27 22:47:33,637 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 384 selfloop transitions, 157 changer transitions 0/553 dead transitions. [2024-06-27 22:47:33,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 553 transitions, 12010 flow [2024-06-27 22:47:33,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:47:33,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:47:33,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-06-27 22:47:33,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5748792270531401 [2024-06-27 22:47:33,638 INFO L175 Difference]: Start difference. First operand has 264 places, 487 transitions, 10104 flow. Second operand 9 states and 238 transitions. [2024-06-27 22:47:33,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 553 transitions, 12010 flow [2024-06-27 22:47:35,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 553 transitions, 11505 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 22:47:35,670 INFO L231 Difference]: Finished difference. Result has 268 places, 502 transitions, 10430 flow [2024-06-27 22:47:35,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9621, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10430, PETRI_PLACES=268, PETRI_TRANSITIONS=502} [2024-06-27 22:47:35,671 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 216 predicate places. [2024-06-27 22:47:35,671 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 502 transitions, 10430 flow [2024-06-27 22:47:35,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:35,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:35,671 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 22:47:35,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 22:47:35,671 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:47:35,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:35,672 INFO L85 PathProgramCache]: Analyzing trace with hash -312746001, now seen corresponding path program 2 times [2024-06-27 22:47:35,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:35,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495122768] [2024-06-27 22:47:35,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:35,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:35,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:35,991 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 22:47:35,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:35,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495122768] [2024-06-27 22:47:35,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495122768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:35,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:35,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:47:35,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283564834] [2024-06-27 22:47:35,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:35,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:47:35,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:35,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:47:35,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:47:36,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:47:36,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 502 transitions, 10430 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:36,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:36,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:47:36,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:38,525 INFO L124 PetriNetUnfolderBase]: 6827/12075 cut-off events. [2024-06-27 22:47:38,525 INFO L125 PetriNetUnfolderBase]: For 302808/302808 co-relation queries the response was YES. [2024-06-27 22:47:38,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89023 conditions, 12075 events. 6827/12075 cut-off events. For 302808/302808 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 98337 event pairs, 1445 based on Foata normal form. 2/11818 useless extension candidates. Maximal degree in co-relation 88894. Up to 8815 conditions per place. [2024-06-27 22:47:38,659 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 402 selfloop transitions, 137 changer transitions 0/551 dead transitions. [2024-06-27 22:47:38,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 551 transitions, 11908 flow [2024-06-27 22:47:38,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:47:38,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:47:38,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 231 transitions. [2024-06-27 22:47:38,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5579710144927537 [2024-06-27 22:47:38,660 INFO L175 Difference]: Start difference. First operand has 268 places, 502 transitions, 10430 flow. Second operand 9 states and 231 transitions. [2024-06-27 22:47:38,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 551 transitions, 11908 flow [2024-06-27 22:47:40,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 551 transitions, 11655 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-27 22:47:40,414 INFO L231 Difference]: Finished difference. Result has 273 places, 507 transitions, 10716 flow [2024-06-27 22:47:40,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10179, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10716, PETRI_PLACES=273, PETRI_TRANSITIONS=507} [2024-06-27 22:47:40,414 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 221 predicate places. [2024-06-27 22:47:40,414 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 507 transitions, 10716 flow [2024-06-27 22:47:40,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:40,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:40,415 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 22:47:40,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 22:47:40,415 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:47:40,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:40,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1611328585, now seen corresponding path program 3 times [2024-06-27 22:47:40,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:40,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101899462] [2024-06-27 22:47:40,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:40,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:40,730 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 22:47:40,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:40,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101899462] [2024-06-27 22:47:40,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101899462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:40,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:40,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:47:40,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24618144] [2024-06-27 22:47:40,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:40,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:47:40,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:40,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:47:40,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:47:40,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:47:40,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 507 transitions, 10716 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:40,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:40,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:47:40,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:43,337 INFO L124 PetriNetUnfolderBase]: 6966/12316 cut-off events. [2024-06-27 22:47:43,337 INFO L125 PetriNetUnfolderBase]: For 324139/324139 co-relation queries the response was YES. [2024-06-27 22:47:43,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92367 conditions, 12316 events. 6966/12316 cut-off events. For 324139/324139 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 100562 event pairs, 1433 based on Foata normal form. 2/12043 useless extension candidates. Maximal degree in co-relation 92235. Up to 9369 conditions per place. [2024-06-27 22:47:43,484 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 454 selfloop transitions, 114 changer transitions 0/580 dead transitions. [2024-06-27 22:47:43,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 580 transitions, 12887 flow [2024-06-27 22:47:43,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:47:43,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:47:43,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-27 22:47:43,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5507246376811594 [2024-06-27 22:47:43,485 INFO L175 Difference]: Start difference. First operand has 273 places, 507 transitions, 10716 flow. Second operand 9 states and 228 transitions. [2024-06-27 22:47:43,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 580 transitions, 12887 flow [2024-06-27 22:47:45,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 580 transitions, 12640 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-27 22:47:45,343 INFO L231 Difference]: Finished difference. Result has 279 places, 535 transitions, 11575 flow [2024-06-27 22:47:45,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10507, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11575, PETRI_PLACES=279, PETRI_TRANSITIONS=535} [2024-06-27 22:47:45,344 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 227 predicate places. [2024-06-27 22:47:45,344 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 535 transitions, 11575 flow [2024-06-27 22:47:45,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:45,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:45,344 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 22:47:45,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 22:47:45,344 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:47:45,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:45,345 INFO L85 PathProgramCache]: Analyzing trace with hash -168975441, now seen corresponding path program 4 times [2024-06-27 22:47:45,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:45,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121600219] [2024-06-27 22:47:45,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:45,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:45,644 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 22:47:45,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:45,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121600219] [2024-06-27 22:47:45,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121600219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:45,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:45,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:47:45,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311845789] [2024-06-27 22:47:45,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:45,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:47:45,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:45,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:47:45,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:47:45,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:47:45,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 535 transitions, 11575 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:45,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:45,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:47:45,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:48,161 INFO L124 PetriNetUnfolderBase]: 6575/11718 cut-off events. [2024-06-27 22:47:48,162 INFO L125 PetriNetUnfolderBase]: For 331730/331730 co-relation queries the response was YES. [2024-06-27 22:47:48,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89212 conditions, 11718 events. 6575/11718 cut-off events. For 331730/331730 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 96630 event pairs, 1819 based on Foata normal form. 2/11393 useless extension candidates. Maximal degree in co-relation 89079. Up to 8526 conditions per place. [2024-06-27 22:47:48,305 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 444 selfloop transitions, 126 changer transitions 0/587 dead transitions. [2024-06-27 22:47:48,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 587 transitions, 13386 flow [2024-06-27 22:47:48,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:47:48,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:47:48,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 211 transitions. [2024-06-27 22:47:48,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65527950310559 [2024-06-27 22:47:48,306 INFO L175 Difference]: Start difference. First operand has 279 places, 535 transitions, 11575 flow. Second operand 7 states and 211 transitions. [2024-06-27 22:47:48,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 587 transitions, 13386 flow [2024-06-27 22:47:50,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 587 transitions, 13024 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-27 22:47:50,192 INFO L231 Difference]: Finished difference. Result has 281 places, 545 transitions, 11855 flow [2024-06-27 22:47:50,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=11213, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11855, PETRI_PLACES=281, PETRI_TRANSITIONS=545} [2024-06-27 22:47:50,193 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 229 predicate places. [2024-06-27 22:47:50,193 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 545 transitions, 11855 flow [2024-06-27 22:47:50,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:50,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:50,193 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 22:47:50,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 22:47:50,194 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:47:50,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:50,194 INFO L85 PathProgramCache]: Analyzing trace with hash -851367321, now seen corresponding path program 5 times [2024-06-27 22:47:50,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:50,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239870318] [2024-06-27 22:47:50,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:50,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:50,509 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 22:47:50,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:50,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239870318] [2024-06-27 22:47:50,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239870318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:50,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:50,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:47:50,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598022349] [2024-06-27 22:47:50,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:50,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:47:50,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:50,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:47:50,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:47:50,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:47:50,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 545 transitions, 11855 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:50,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:50,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:47:50,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:53,025 INFO L124 PetriNetUnfolderBase]: 6615/11802 cut-off events. [2024-06-27 22:47:53,025 INFO L125 PetriNetUnfolderBase]: For 356282/356282 co-relation queries the response was YES. [2024-06-27 22:47:53,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91718 conditions, 11802 events. 6615/11802 cut-off events. For 356282/356282 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 97735 event pairs, 1858 based on Foata normal form. 2/11471 useless extension candidates. Maximal degree in co-relation 91584. Up to 8823 conditions per place. [2024-06-27 22:47:53,176 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 464 selfloop transitions, 107 changer transitions 0/588 dead transitions. [2024-06-27 22:47:53,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 588 transitions, 13428 flow [2024-06-27 22:47:53,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:47:53,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:47:53,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 204 transitions. [2024-06-27 22:47:53,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6335403726708074 [2024-06-27 22:47:53,177 INFO L175 Difference]: Start difference. First operand has 281 places, 545 transitions, 11855 flow. Second operand 7 states and 204 transitions. [2024-06-27 22:47:53,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 588 transitions, 13428 flow [2024-06-27 22:47:55,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 588 transitions, 13076 flow, removed 107 selfloop flow, removed 3 redundant places. [2024-06-27 22:47:55,258 INFO L231 Difference]: Finished difference. Result has 285 places, 553 transitions, 11941 flow [2024-06-27 22:47:55,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=11559, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11941, PETRI_PLACES=285, PETRI_TRANSITIONS=553} [2024-06-27 22:47:55,258 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 233 predicate places. [2024-06-27 22:47:55,259 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 553 transitions, 11941 flow [2024-06-27 22:47:55,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:55,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:55,259 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 22:47:55,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 22:47:55,259 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:47:55,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:55,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1211585472, now seen corresponding path program 1 times [2024-06-27 22:47:55,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:55,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130786954] [2024-06-27 22:47:55,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:55,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:55,582 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 22:47:55,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:55,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130786954] [2024-06-27 22:47:55,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130786954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:55,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:55,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:47:55,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318005419] [2024-06-27 22:47:55,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:55,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:47:55,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:55,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:47:55,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:47:55,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:47:55,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 553 transitions, 11941 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:55,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:55,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:47:55,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:58,019 INFO L124 PetriNetUnfolderBase]: 6668/11892 cut-off events. [2024-06-27 22:47:58,019 INFO L125 PetriNetUnfolderBase]: For 344604/344604 co-relation queries the response was YES. [2024-06-27 22:47:58,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92498 conditions, 11892 events. 6668/11892 cut-off events. For 344604/344604 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 98636 event pairs, 1524 based on Foata normal form. 2/11567 useless extension candidates. Maximal degree in co-relation 92362. Up to 9001 conditions per place. [2024-06-27 22:47:58,164 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 480 selfloop transitions, 96 changer transitions 0/593 dead transitions. [2024-06-27 22:47:58,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 593 transitions, 13585 flow [2024-06-27 22:47:58,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:47:58,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:47:58,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 179 transitions. [2024-06-27 22:47:58,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6485507246376812 [2024-06-27 22:47:58,165 INFO L175 Difference]: Start difference. First operand has 285 places, 553 transitions, 11941 flow. Second operand 6 states and 179 transitions. [2024-06-27 22:47:58,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 593 transitions, 13585 flow [2024-06-27 22:48:00,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 593 transitions, 13326 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-27 22:48:00,283 INFO L231 Difference]: Finished difference. Result has 288 places, 561 transitions, 12109 flow [2024-06-27 22:48:00,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=11682, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=12109, PETRI_PLACES=288, PETRI_TRANSITIONS=561} [2024-06-27 22:48:00,283 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 236 predicate places. [2024-06-27 22:48:00,283 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 561 transitions, 12109 flow [2024-06-27 22:48:00,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:00,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:00,284 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 22:48:00,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 22:48:00,284 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:48:00,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:00,284 INFO L85 PathProgramCache]: Analyzing trace with hash -842107311, now seen corresponding path program 6 times [2024-06-27 22:48:00,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:00,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649553883] [2024-06-27 22:48:00,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:00,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:00,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:00,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:00,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:00,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649553883] [2024-06-27 22:48:00,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649553883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:00,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:00,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:48:00,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006482934] [2024-06-27 22:48:00,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:00,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:48:00,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:00,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:48:00,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:48:00,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-06-27 22:48:00,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 561 transitions, 12109 flow. Second operand has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:00,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:00,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-06-27 22:48:00,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:03,235 INFO L124 PetriNetUnfolderBase]: 6688/11923 cut-off events. [2024-06-27 22:48:03,235 INFO L125 PetriNetUnfolderBase]: For 351771/351771 co-relation queries the response was YES. [2024-06-27 22:48:03,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92992 conditions, 11923 events. 6688/11923 cut-off events. For 351771/351771 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 98929 event pairs, 1507 based on Foata normal form. 2/11598 useless extension candidates. Maximal degree in co-relation 92853. Up to 8914 conditions per place. [2024-06-27 22:48:03,380 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 473 selfloop transitions, 111 changer transitions 0/600 dead transitions. [2024-06-27 22:48:03,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 600 transitions, 13603 flow [2024-06-27 22:48:03,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:48:03,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:48:03,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-06-27 22:48:03,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5815217391304348 [2024-06-27 22:48:03,381 INFO L175 Difference]: Start difference. First operand has 288 places, 561 transitions, 12109 flow. Second operand 8 states and 214 transitions. [2024-06-27 22:48:03,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 600 transitions, 13603 flow [2024-06-27 22:48:05,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 600 transitions, 13406 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-27 22:48:05,597 INFO L231 Difference]: Finished difference. Result has 293 places, 565 transitions, 12256 flow [2024-06-27 22:48:05,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=11912, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12256, PETRI_PLACES=293, PETRI_TRANSITIONS=565} [2024-06-27 22:48:05,598 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 241 predicate places. [2024-06-27 22:48:05,598 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 565 transitions, 12256 flow [2024-06-27 22:48:05,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:05,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:05,598 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 22:48:05,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 22:48:05,598 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:48:05,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:05,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1240588842, now seen corresponding path program 2 times [2024-06-27 22:48:05,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:05,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976451898] [2024-06-27 22:48:05,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:05,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:05,887 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 22:48:05,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:05,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976451898] [2024-06-27 22:48:05,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976451898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:05,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:05,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:48:05,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403944039] [2024-06-27 22:48:05,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:05,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:48:05,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:05,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:48:05,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:48:05,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:48:05,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 565 transitions, 12256 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:05,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:05,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:48:05,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:08,355 INFO L124 PetriNetUnfolderBase]: 6711/11964 cut-off events. [2024-06-27 22:48:08,355 INFO L125 PetriNetUnfolderBase]: For 372202/372202 co-relation queries the response was YES. [2024-06-27 22:48:08,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93572 conditions, 11964 events. 6711/11964 cut-off events. For 372202/372202 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 99207 event pairs, 1910 based on Foata normal form. 2/11630 useless extension candidates. Maximal degree in co-relation 93432. Up to 9177 conditions per place. [2024-06-27 22:48:08,501 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 502 selfloop transitions, 79 changer transitions 0/598 dead transitions. [2024-06-27 22:48:08,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 598 transitions, 13733 flow [2024-06-27 22:48:08,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:48:08,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:48:08,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 174 transitions. [2024-06-27 22:48:08,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6304347826086957 [2024-06-27 22:48:08,502 INFO L175 Difference]: Start difference. First operand has 293 places, 565 transitions, 12256 flow. Second operand 6 states and 174 transitions. [2024-06-27 22:48:08,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 598 transitions, 13733 flow [2024-06-27 22:48:10,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 598 transitions, 13461 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-27 22:48:10,565 INFO L231 Difference]: Finished difference. Result has 293 places, 569 transitions, 12259 flow [2024-06-27 22:48:10,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=11984, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=12259, PETRI_PLACES=293, PETRI_TRANSITIONS=569} [2024-06-27 22:48:10,566 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 241 predicate places. [2024-06-27 22:48:10,566 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 569 transitions, 12259 flow [2024-06-27 22:48:10,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:10,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:10,566 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 22:48:10,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 22:48:10,566 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:48:10,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:10,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1885974232, now seen corresponding path program 3 times [2024-06-27 22:48:10,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:10,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844383761] [2024-06-27 22:48:10,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:10,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:10,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:10,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:10,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844383761] [2024-06-27 22:48:10,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844383761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:10,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:10,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:48:10,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735154058] [2024-06-27 22:48:10,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:10,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:48:10,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:10,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:48:10,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:48:10,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:48:10,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 569 transitions, 12259 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:10,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:10,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:48:10,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:13,317 INFO L124 PetriNetUnfolderBase]: 6812/12087 cut-off events. [2024-06-27 22:48:13,318 INFO L125 PetriNetUnfolderBase]: For 362054/362054 co-relation queries the response was YES. [2024-06-27 22:48:13,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94772 conditions, 12087 events. 6812/12087 cut-off events. For 362054/362054 co-relation queries the response was YES. Maximal size of possible extension queue 793. Compared 99864 event pairs, 1550 based on Foata normal form. 2/11766 useless extension candidates. Maximal degree in co-relation 94632. Up to 9233 conditions per place. [2024-06-27 22:48:13,474 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 511 selfloop transitions, 97 changer transitions 0/625 dead transitions. [2024-06-27 22:48:13,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 625 transitions, 14439 flow [2024-06-27 22:48:13,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:48:13,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:48:13,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 173 transitions. [2024-06-27 22:48:13,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6268115942028986 [2024-06-27 22:48:13,475 INFO L175 Difference]: Start difference. First operand has 293 places, 569 transitions, 12259 flow. Second operand 6 states and 173 transitions. [2024-06-27 22:48:13,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 625 transitions, 14439 flow [2024-06-27 22:48:15,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 625 transitions, 14245 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-27 22:48:15,717 INFO L231 Difference]: Finished difference. Result has 297 places, 598 transitions, 13134 flow [2024-06-27 22:48:15,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=12079, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13134, PETRI_PLACES=297, PETRI_TRANSITIONS=598} [2024-06-27 22:48:15,717 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 245 predicate places. [2024-06-27 22:48:15,718 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 598 transitions, 13134 flow [2024-06-27 22:48:15,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:15,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:15,718 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 22:48:15,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 22:48:15,718 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:48:15,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:15,718 INFO L85 PathProgramCache]: Analyzing trace with hash -698222361, now seen corresponding path program 7 times [2024-06-27 22:48:15,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:15,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553329535] [2024-06-27 22:48:15,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:15,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:16,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:16,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:16,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553329535] [2024-06-27 22:48:16,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553329535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:16,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:16,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:48:16,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025092944] [2024-06-27 22:48:16,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:16,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:48:16,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:16,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:48:16,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:48:16,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:48:16,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 598 transitions, 13134 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:16,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:16,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:48:16,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:18,664 INFO L124 PetriNetUnfolderBase]: 6865/12214 cut-off events. [2024-06-27 22:48:18,665 INFO L125 PetriNetUnfolderBase]: For 386759/386759 co-relation queries the response was YES. [2024-06-27 22:48:18,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97841 conditions, 12214 events. 6865/12214 cut-off events. For 386759/386759 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 101539 event pairs, 1529 based on Foata normal form. 2/11881 useless extension candidates. Maximal degree in co-relation 97698. Up to 9299 conditions per place. [2024-06-27 22:48:18,826 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 525 selfloop transitions, 96 changer transitions 0/638 dead transitions. [2024-06-27 22:48:18,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 638 transitions, 14759 flow [2024-06-27 22:48:18,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:48:18,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:48:18,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions. [2024-06-27 22:48:18,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6211180124223602 [2024-06-27 22:48:18,827 INFO L175 Difference]: Start difference. First operand has 297 places, 598 transitions, 13134 flow. Second operand 7 states and 200 transitions. [2024-06-27 22:48:18,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 638 transitions, 14759 flow [2024-06-27 22:48:21,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 638 transitions, 14475 flow, removed 115 selfloop flow, removed 1 redundant places. [2024-06-27 22:48:21,473 INFO L231 Difference]: Finished difference. Result has 304 places, 606 transitions, 13242 flow [2024-06-27 22:48:21,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=12850, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13242, PETRI_PLACES=304, PETRI_TRANSITIONS=606} [2024-06-27 22:48:21,474 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 252 predicate places. [2024-06-27 22:48:21,474 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 606 transitions, 13242 flow [2024-06-27 22:48:21,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:21,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:21,474 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 22:48:21,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 22:48:21,474 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:48:21,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:21,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1297464683, now seen corresponding path program 8 times [2024-06-27 22:48:21,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:21,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073559287] [2024-06-27 22:48:21,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:21,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:21,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:21,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:21,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073559287] [2024-06-27 22:48:21,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073559287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:21,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:21,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:48:21,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184564724] [2024-06-27 22:48:21,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:21,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:48:21,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:21,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:48:21,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:48:21,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:48:21,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 606 transitions, 13242 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:21,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:21,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:48:21,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:24,575 INFO L124 PetriNetUnfolderBase]: 7125/12636 cut-off events. [2024-06-27 22:48:24,575 INFO L125 PetriNetUnfolderBase]: For 429526/429526 co-relation queries the response was YES. [2024-06-27 22:48:24,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101856 conditions, 12636 events. 7125/12636 cut-off events. For 429526/429526 co-relation queries the response was YES. Maximal size of possible extension queue 832. Compared 105370 event pairs, 1517 based on Foata normal form. 2/12308 useless extension candidates. Maximal degree in co-relation 101710. Up to 6723 conditions per place. [2024-06-27 22:48:24,756 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 318 selfloop transitions, 329 changer transitions 0/664 dead transitions. [2024-06-27 22:48:24,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 664 transitions, 15702 flow [2024-06-27 22:48:24,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:48:24,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:48:24,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 214 transitions. [2024-06-27 22:48:24,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6645962732919255 [2024-06-27 22:48:24,757 INFO L175 Difference]: Start difference. First operand has 304 places, 606 transitions, 13242 flow. Second operand 7 states and 214 transitions. [2024-06-27 22:48:24,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 664 transitions, 15702 flow [2024-06-27 22:48:27,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 664 transitions, 15497 flow, removed 34 selfloop flow, removed 3 redundant places. [2024-06-27 22:48:27,701 INFO L231 Difference]: Finished difference. Result has 308 places, 625 transitions, 14460 flow [2024-06-27 22:48:27,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=13037, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=317, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14460, PETRI_PLACES=308, PETRI_TRANSITIONS=625} [2024-06-27 22:48:27,702 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 256 predicate places. [2024-06-27 22:48:27,702 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 625 transitions, 14460 flow [2024-06-27 22:48:27,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:27,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:27,703 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 22:48:27,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 22:48:27,703 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:48:27,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:27,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1302707093, now seen corresponding path program 9 times [2024-06-27 22:48:27,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:27,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931806066] [2024-06-27 22:48:27,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:27,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:28,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:28,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:28,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931806066] [2024-06-27 22:48:28,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931806066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:28,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:28,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:48:28,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702906370] [2024-06-27 22:48:28,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:28,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:48:28,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:28,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:48:28,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:48:28,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:48:28,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 625 transitions, 14460 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:28,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:28,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:48:28,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:30,980 INFO L124 PetriNetUnfolderBase]: 7165/12713 cut-off events. [2024-06-27 22:48:30,980 INFO L125 PetriNetUnfolderBase]: For 472159/472159 co-relation queries the response was YES. [2024-06-27 22:48:31,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104732 conditions, 12713 events. 7165/12713 cut-off events. For 472159/472159 co-relation queries the response was YES. Maximal size of possible extension queue 838. Compared 105850 event pairs, 1511 based on Foata normal form. 2/12401 useless extension candidates. Maximal degree in co-relation 104585. Up to 8372 conditions per place. [2024-06-27 22:48:31,169 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 421 selfloop transitions, 227 changer transitions 0/665 dead transitions. [2024-06-27 22:48:31,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 665 transitions, 16174 flow [2024-06-27 22:48:31,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:48:31,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:48:31,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 204 transitions. [2024-06-27 22:48:31,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6335403726708074 [2024-06-27 22:48:31,170 INFO L175 Difference]: Start difference. First operand has 308 places, 625 transitions, 14460 flow. Second operand 7 states and 204 transitions. [2024-06-27 22:48:31,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 665 transitions, 16174 flow [2024-06-27 22:48:34,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 665 transitions, 15763 flow, removed 202 selfloop flow, removed 1 redundant places. [2024-06-27 22:48:34,485 INFO L231 Difference]: Finished difference. Result has 314 places, 633 transitions, 14735 flow [2024-06-27 22:48:34,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=14119, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14735, PETRI_PLACES=314, PETRI_TRANSITIONS=633} [2024-06-27 22:48:34,486 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 262 predicate places. [2024-06-27 22:48:34,486 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 633 transitions, 14735 flow [2024-06-27 22:48:34,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:34,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:34,486 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 22:48:34,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 22:48:34,486 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:48:34,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:34,486 INFO L85 PathProgramCache]: Analyzing trace with hash 580328965, now seen corresponding path program 10 times [2024-06-27 22:48:34,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:34,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056771444] [2024-06-27 22:48:34,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:34,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:34,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:34,796 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 22:48:34,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:34,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056771444] [2024-06-27 22:48:34,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056771444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:34,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:34,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:48:34,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303802481] [2024-06-27 22:48:34,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:34,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:48:34,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:34,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:48:34,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:48:34,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:48:34,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 633 transitions, 14735 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:34,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:34,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:48:34,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:38,297 INFO L124 PetriNetUnfolderBase]: 7185/12738 cut-off events. [2024-06-27 22:48:38,297 INFO L125 PetriNetUnfolderBase]: For 445780/445780 co-relation queries the response was YES. [2024-06-27 22:48:38,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103168 conditions, 12738 events. 7185/12738 cut-off events. For 445780/445780 co-relation queries the response was YES. Maximal size of possible extension queue 840. Compared 105982 event pairs, 1541 based on Foata normal form. 2/12426 useless extension candidates. Maximal degree in co-relation 103019. Up to 6775 conditions per place. [2024-06-27 22:48:38,513 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 276 selfloop transitions, 383 changer transitions 0/676 dead transitions. [2024-06-27 22:48:38,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 676 transitions, 16587 flow [2024-06-27 22:48:38,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:48:38,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:48:38,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 213 transitions. [2024-06-27 22:48:38,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6614906832298136 [2024-06-27 22:48:38,514 INFO L175 Difference]: Start difference. First operand has 314 places, 633 transitions, 14735 flow. Second operand 7 states and 213 transitions. [2024-06-27 22:48:38,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 676 transitions, 16587 flow [2024-06-27 22:48:41,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 676 transitions, 16066 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-27 22:48:41,248 INFO L231 Difference]: Finished difference. Result has 316 places, 637 transitions, 15099 flow [2024-06-27 22:48:41,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=14220, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=379, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15099, PETRI_PLACES=316, PETRI_TRANSITIONS=637} [2024-06-27 22:48:41,248 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 264 predicate places. [2024-06-27 22:48:41,248 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 637 transitions, 15099 flow [2024-06-27 22:48:41,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:41,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:41,249 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 22:48:41,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 22:48:41,249 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:48:41,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:41,249 INFO L85 PathProgramCache]: Analyzing trace with hash -97170210, now seen corresponding path program 4 times [2024-06-27 22:48:41,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:41,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494601172] [2024-06-27 22:48:41,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:41,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:41,575 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 22:48:41,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:41,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494601172] [2024-06-27 22:48:41,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494601172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:41,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:41,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:48:41,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163119901] [2024-06-27 22:48:41,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:41,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:48:41,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:41,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:48:41,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:48:41,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:48:41,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 637 transitions, 15099 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:41,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:41,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:48:41,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:44,843 INFO L124 PetriNetUnfolderBase]: 7223/12804 cut-off events. [2024-06-27 22:48:44,843 INFO L125 PetriNetUnfolderBase]: For 450583/450583 co-relation queries the response was YES. [2024-06-27 22:48:44,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104622 conditions, 12804 events. 7223/12804 cut-off events. For 450583/450583 co-relation queries the response was YES. Maximal size of possible extension queue 846. Compared 106499 event pairs, 1509 based on Foata normal form. 2/12492 useless extension candidates. Maximal degree in co-relation 104473. Up to 8481 conditions per place. [2024-06-27 22:48:45,015 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 443 selfloop transitions, 219 changer transitions 0/679 dead transitions. [2024-06-27 22:48:45,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 679 transitions, 17048 flow [2024-06-27 22:48:45,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:48:45,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:48:45,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 179 transitions. [2024-06-27 22:48:45,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6485507246376812 [2024-06-27 22:48:45,016 INFO L175 Difference]: Start difference. First operand has 316 places, 637 transitions, 15099 flow. Second operand 6 states and 179 transitions. [2024-06-27 22:48:45,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 679 transitions, 17048 flow [2024-06-27 22:48:48,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 679 transitions, 16344 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-27 22:48:48,191 INFO L231 Difference]: Finished difference. Result has 318 places, 650 transitions, 15352 flow [2024-06-27 22:48:48,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=14399, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=15352, PETRI_PLACES=318, PETRI_TRANSITIONS=650} [2024-06-27 22:48:48,192 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 266 predicate places. [2024-06-27 22:48:48,192 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 650 transitions, 15352 flow [2024-06-27 22:48:48,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:48,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:48,192 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 22:48:48,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 22:48:48,193 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:48:48,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:48,193 INFO L85 PathProgramCache]: Analyzing trace with hash 2032119424, now seen corresponding path program 1 times [2024-06-27 22:48:48,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:48,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113854916] [2024-06-27 22:48:48,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:48,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:48,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:48,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:48,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113854916] [2024-06-27 22:48:48,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113854916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:48,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:48,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:48:48,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301594169] [2024-06-27 22:48:48,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:48,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:48:48,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:48,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:48:48,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:48:48,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:48:48,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 650 transitions, 15352 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:48,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:48,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:48:48,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:52,174 INFO L124 PetriNetUnfolderBase]: 7608/13504 cut-off events. [2024-06-27 22:48:52,174 INFO L125 PetriNetUnfolderBase]: For 501679/501679 co-relation queries the response was YES. [2024-06-27 22:48:52,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110463 conditions, 13504 events. 7608/13504 cut-off events. For 501679/501679 co-relation queries the response was YES. Maximal size of possible extension queue 896. Compared 114067 event pairs, 1423 based on Foata normal form. 18/13218 useless extension candidates. Maximal degree in co-relation 110313. Up to 4929 conditions per place. [2024-06-27 22:48:52,344 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 350 selfloop transitions, 347 changer transitions 0/714 dead transitions. [2024-06-27 22:48:52,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 714 transitions, 17662 flow [2024-06-27 22:48:52,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:48:52,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:48:52,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 247 transitions. [2024-06-27 22:48:52,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6711956521739131 [2024-06-27 22:48:52,346 INFO L175 Difference]: Start difference. First operand has 318 places, 650 transitions, 15352 flow. Second operand 8 states and 247 transitions. [2024-06-27 22:48:52,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 714 transitions, 17662 flow [2024-06-27 22:48:55,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 714 transitions, 17345 flow, removed 54 selfloop flow, removed 2 redundant places. [2024-06-27 22:48:55,770 INFO L231 Difference]: Finished difference. Result has 324 places, 650 transitions, 15732 flow [2024-06-27 22:48:55,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=15035, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=347, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15732, PETRI_PLACES=324, PETRI_TRANSITIONS=650} [2024-06-27 22:48:55,771 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 272 predicate places. [2024-06-27 22:48:55,771 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 650 transitions, 15732 flow [2024-06-27 22:48:55,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:55,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:55,771 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 22:48:55,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 22:48:55,771 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:48:55,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:55,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1878734622, now seen corresponding path program 2 times [2024-06-27 22:48:55,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:55,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721985205] [2024-06-27 22:48:55,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:55,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:56,130 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 22:48:56,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:56,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721985205] [2024-06-27 22:48:56,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721985205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:56,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:56,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:48:56,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551294615] [2024-06-27 22:48:56,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:56,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:48:56,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:56,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:48:56,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:48:56,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:48:56,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 650 transitions, 15732 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:56,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:56,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:48:56,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:59,741 INFO L124 PetriNetUnfolderBase]: 7788/13922 cut-off events. [2024-06-27 22:48:59,741 INFO L125 PetriNetUnfolderBase]: For 519801/519801 co-relation queries the response was YES. [2024-06-27 22:48:59,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114176 conditions, 13922 events. 7788/13922 cut-off events. For 519801/519801 co-relation queries the response was YES. Maximal size of possible extension queue 922. Compared 118940 event pairs, 1733 based on Foata normal form. 18/13600 useless extension candidates. Maximal degree in co-relation 114025. Up to 4929 conditions per place. [2024-06-27 22:48:59,910 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 350 selfloop transitions, 344 changer transitions 0/711 dead transitions. [2024-06-27 22:48:59,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 711 transitions, 18030 flow [2024-06-27 22:48:59,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:48:59,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:48:59,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 244 transitions. [2024-06-27 22:48:59,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6630434782608695 [2024-06-27 22:48:59,911 INFO L175 Difference]: Start difference. First operand has 324 places, 650 transitions, 15732 flow. Second operand 8 states and 244 transitions. [2024-06-27 22:48:59,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 711 transitions, 18030 flow [2024-06-27 22:49:02,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 711 transitions, 17337 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 22:49:02,901 INFO L231 Difference]: Finished difference. Result has 326 places, 650 transitions, 15730 flow [2024-06-27 22:49:02,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=15039, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=344, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15730, PETRI_PLACES=326, PETRI_TRANSITIONS=650} [2024-06-27 22:49:02,902 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 274 predicate places. [2024-06-27 22:49:02,902 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 650 transitions, 15730 flow [2024-06-27 22:49:02,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:02,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:02,902 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 22:49:02,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 22:49:02,902 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:49:02,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:02,902 INFO L85 PathProgramCache]: Analyzing trace with hash 799507061, now seen corresponding path program 11 times [2024-06-27 22:49:02,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:02,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062584852] [2024-06-27 22:49:02,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:02,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:03,239 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 22:49:03,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:03,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062584852] [2024-06-27 22:49:03,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062584852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:03,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:03,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:49:03,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846714501] [2024-06-27 22:49:03,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:03,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:49:03,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:03,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:49:03,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:49:03,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:49:03,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 650 transitions, 15730 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:03,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:03,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:49:03,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:06,874 INFO L124 PetriNetUnfolderBase]: 7813/13950 cut-off events. [2024-06-27 22:49:06,875 INFO L125 PetriNetUnfolderBase]: For 493728/493728 co-relation queries the response was YES. [2024-06-27 22:49:06,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114554 conditions, 13950 events. 7813/13950 cut-off events. For 493728/493728 co-relation queries the response was YES. Maximal size of possible extension queue 924. Compared 119118 event pairs, 2036 based on Foata normal form. 2/13588 useless extension candidates. Maximal degree in co-relation 114402. Up to 7762 conditions per place. [2024-06-27 22:49:07,038 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 279 selfloop transitions, 395 changer transitions 0/691 dead transitions. [2024-06-27 22:49:07,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 691 transitions, 17685 flow [2024-06-27 22:49:07,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:49:07,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:49:07,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 208 transitions. [2024-06-27 22:49:07,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6459627329192547 [2024-06-27 22:49:07,039 INFO L175 Difference]: Start difference. First operand has 326 places, 650 transitions, 15730 flow. Second operand 7 states and 208 transitions. [2024-06-27 22:49:07,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 691 transitions, 17685 flow [2024-06-27 22:49:10,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 691 transitions, 16998 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 22:49:10,456 INFO L231 Difference]: Finished difference. Result has 327 places, 657 transitions, 16022 flow [2024-06-27 22:49:10,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=15043, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=388, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16022, PETRI_PLACES=327, PETRI_TRANSITIONS=657} [2024-06-27 22:49:10,457 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 275 predicate places. [2024-06-27 22:49:10,457 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 657 transitions, 16022 flow [2024-06-27 22:49:10,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:10,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:10,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:10,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 22:49:10,458 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:49:10,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:10,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1293447083, now seen corresponding path program 12 times [2024-06-27 22:49:10,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:10,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610555917] [2024-06-27 22:49:10,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:10,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:10,839 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 22:49:10,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:10,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610555917] [2024-06-27 22:49:10,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610555917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:10,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:10,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:49:10,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844444072] [2024-06-27 22:49:10,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:10,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:49:10,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:10,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:49:10,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:49:10,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:49:10,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 657 transitions, 16022 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:10,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:10,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:49:10,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:14,360 INFO L124 PetriNetUnfolderBase]: 7628/13596 cut-off events. [2024-06-27 22:49:14,360 INFO L125 PetriNetUnfolderBase]: For 475609/475609 co-relation queries the response was YES. [2024-06-27 22:49:14,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112216 conditions, 13596 events. 7628/13596 cut-off events. For 475609/475609 co-relation queries the response was YES. Maximal size of possible extension queue 898. Compared 115121 event pairs, 1892 based on Foata normal form. 2/13252 useless extension candidates. Maximal degree in co-relation 112063. Up to 9081 conditions per place. [2024-06-27 22:49:14,523 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 446 selfloop transitions, 230 changer transitions 0/693 dead transitions. [2024-06-27 22:49:14,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 693 transitions, 17702 flow [2024-06-27 22:49:14,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:49:14,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:49:14,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 204 transitions. [2024-06-27 22:49:14,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6335403726708074 [2024-06-27 22:49:14,524 INFO L175 Difference]: Start difference. First operand has 327 places, 657 transitions, 16022 flow. Second operand 7 states and 204 transitions. [2024-06-27 22:49:14,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 693 transitions, 17702 flow [2024-06-27 22:49:17,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 693 transitions, 17070 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-27 22:49:17,592 INFO L231 Difference]: Finished difference. Result has 330 places, 661 transitions, 15989 flow [2024-06-27 22:49:17,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=15396, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15989, PETRI_PLACES=330, PETRI_TRANSITIONS=661} [2024-06-27 22:49:17,593 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 278 predicate places. [2024-06-27 22:49:17,593 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 661 transitions, 15989 flow [2024-06-27 22:49:17,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:17,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:17,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:17,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 22:49:17,593 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:49:17,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:17,594 INFO L85 PathProgramCache]: Analyzing trace with hash -331524416, now seen corresponding path program 5 times [2024-06-27 22:49:17,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:17,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528501771] [2024-06-27 22:49:17,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:17,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:17,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:49:17,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:17,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528501771] [2024-06-27 22:49:17,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528501771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:17,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:17,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:49:17,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305061585] [2024-06-27 22:49:17,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:17,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:49:17,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:17,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:49:17,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:49:18,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:49:18,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 661 transitions, 15989 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:18,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:18,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:49:18,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:21,285 INFO L124 PetriNetUnfolderBase]: 7623/13582 cut-off events. [2024-06-27 22:49:21,285 INFO L125 PetriNetUnfolderBase]: For 470607/470607 co-relation queries the response was YES. [2024-06-27 22:49:21,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111606 conditions, 13582 events. 7623/13582 cut-off events. For 470607/470607 co-relation queries the response was YES. Maximal size of possible extension queue 899. Compared 115084 event pairs, 1863 based on Foata normal form. 2/13241 useless extension candidates. Maximal degree in co-relation 111453. Up to 9116 conditions per place. [2024-06-27 22:49:21,466 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 451 selfloop transitions, 220 changer transitions 0/688 dead transitions. [2024-06-27 22:49:21,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 688 transitions, 17670 flow [2024-06-27 22:49:21,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:49:21,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:49:21,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2024-06-27 22:49:21,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6376811594202898 [2024-06-27 22:49:21,467 INFO L175 Difference]: Start difference. First operand has 330 places, 661 transitions, 15989 flow. Second operand 6 states and 176 transitions. [2024-06-27 22:49:21,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 688 transitions, 17670 flow [2024-06-27 22:49:24,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 688 transitions, 17151 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-27 22:49:24,903 INFO L231 Difference]: Finished difference. Result has 332 places, 662 transitions, 16020 flow [2024-06-27 22:49:24,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=15474, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=16020, PETRI_PLACES=332, PETRI_TRANSITIONS=662} [2024-06-27 22:49:24,904 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 280 predicate places. [2024-06-27 22:49:24,904 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 662 transitions, 16020 flow [2024-06-27 22:49:24,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:24,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:24,904 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 22:49:24,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 22:49:24,904 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:49:24,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:24,905 INFO L85 PathProgramCache]: Analyzing trace with hash -331536165, now seen corresponding path program 13 times [2024-06-27 22:49:24,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:24,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649149880] [2024-06-27 22:49:24,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:24,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:25,298 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 22:49:25,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:25,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649149880] [2024-06-27 22:49:25,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649149880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:25,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:25,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:49:25,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674033223] [2024-06-27 22:49:25,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:25,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:49:25,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:25,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:49:25,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:49:25,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:49:25,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 662 transitions, 16020 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:25,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:25,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:49:25,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:28,743 INFO L124 PetriNetUnfolderBase]: 7698/13702 cut-off events. [2024-06-27 22:49:28,743 INFO L125 PetriNetUnfolderBase]: For 473486/473486 co-relation queries the response was YES. [2024-06-27 22:49:28,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112562 conditions, 13702 events. 7698/13702 cut-off events. For 473486/473486 co-relation queries the response was YES. Maximal size of possible extension queue 907. Compared 115827 event pairs, 1817 based on Foata normal form. 2/13361 useless extension candidates. Maximal degree in co-relation 112407. Up to 9013 conditions per place. [2024-06-27 22:49:28,911 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 413 selfloop transitions, 285 changer transitions 0/715 dead transitions. [2024-06-27 22:49:28,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 715 transitions, 18237 flow [2024-06-27 22:49:28,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:49:28,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:49:28,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 252 transitions. [2024-06-27 22:49:28,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6086956521739131 [2024-06-27 22:49:28,912 INFO L175 Difference]: Start difference. First operand has 332 places, 662 transitions, 16020 flow. Second operand 9 states and 252 transitions. [2024-06-27 22:49:28,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 715 transitions, 18237 flow