./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix015.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/mix015.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f 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/mix015.opt.i ./goblint.2024-05-21_14-57-05.files/protection/mix015.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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-04 14:48:40,199 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 14:48:40,276 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 14:48:40,282 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 14:48:40,283 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 14:48:40,322 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 14:48:40,323 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 14:48:40,324 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 14:48:40,324 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 14:48:40,328 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 14:48:40,328 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 14:48:40,329 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 14:48:40,330 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 14:48:40,331 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 14:48:40,331 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 14:48:40,331 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 14:48:40,332 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 14:48:40,332 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 14:48:40,332 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 14:48:40,333 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 14:48:40,333 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 14:48:40,336 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 14:48:40,336 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 14:48:40,336 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 14:48:40,337 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 14:48:40,337 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 14:48:40,337 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 14:48:40,338 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 14:48:40,338 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 14:48:40,339 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 14:48:40,339 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 14:48:40,340 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 14:48:40,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:48:40,340 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 14:48:40,340 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 14:48:40,341 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 14:48:40,341 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 14:48:40,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 14:48:40,341 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 14:48:40,342 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 14:48:40,342 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 14:48:40,342 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 14:48:40,342 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 14:48:40,342 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 14:48:40,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 14:48:40,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 14:48:40,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 14:48:40,631 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 14:48:40,632 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 14:48:40,633 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix015.opt.yml/witness.yml [2024-06-04 14:48:40,823 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 14:48:40,823 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 14:48:40,823 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix015.opt.i [2024-06-04 14:48:42,000 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 14:48:42,233 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 14:48:42,234 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix015.opt.i [2024-06-04 14:48:42,252 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09445ea01/6d66db78d3144fb385ee817f01e73d01/FLAG4ebb814cc [2024-06-04 14:48:42,265 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09445ea01/6d66db78d3144fb385ee817f01e73d01 [2024-06-04 14:48:42,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 14:48:42,267 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 14:48:42,269 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 14:48:42,269 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 14:48:42,273 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 14:48:42,274 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:48:40" (1/2) ... [2024-06-04 14:48:42,275 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@565d461e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:48:42, skipping insertion in model container [2024-06-04 14:48:42,275 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:48:40" (1/2) ... [2024-06-04 14:48:42,276 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@74fbe91 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:48:42, skipping insertion in model container [2024-06-04 14:48:42,276 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:48:42" (2/2) ... [2024-06-04 14:48:42,276 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@565d461e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:48:42, skipping insertion in model container [2024-06-04 14:48:42,277 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:48:42" (2/2) ... [2024-06-04 14:48:42,277 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 14:48:42,375 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 14:48:42,376 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] (((((((((((((((((((((! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-04 14:48:42,377 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] (((((((((((((((((((((! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-04 14:48:42,377 INFO L97 edCorrectnessWitness]: Location invariant before [L858-L858] (((((((((((((((((((((! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-04 14:48:42,377 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 14:48:42,377 INFO L106 edCorrectnessWitness]: ghost_update [L854-L854] multithreaded = 1; [2024-06-04 14:48:42,422 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 14:48:42,843 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:48:42,857 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 14:48:42,978 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:48:43,014 INFO L206 MainTranslator]: Completed translation [2024-06-04 14:48:43,014 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:48:43 WrapperNode [2024-06-04 14:48:43,015 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 14:48:43,016 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 14:48:43,016 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 14:48:43,017 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 14:48:43,023 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:48:43" (1/1) ... [2024-06-04 14:48:43,054 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:48:43" (1/1) ... [2024-06-04 14:48:43,100 INFO L138 Inliner]: procedures = 175, calls = 49, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 151 [2024-06-04 14:48:43,104 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 14:48:43,105 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 14:48:43,105 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 14:48:43,106 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 14:48:43,116 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:48:43" (1/1) ... [2024-06-04 14:48:43,116 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:48:43" (1/1) ... [2024-06-04 14:48:43,132 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:48:43" (1/1) ... [2024-06-04 14:48:43,158 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]. [2024-06-04 14:48:43,162 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:48:43" (1/1) ... [2024-06-04 14:48:43,163 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:48:43" (1/1) ... [2024-06-04 14:48:43,171 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:48:43" (1/1) ... [2024-06-04 14:48:43,186 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:48:43" (1/1) ... [2024-06-04 14:48:43,188 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:48:43" (1/1) ... [2024-06-04 14:48:43,193 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:48:43" (1/1) ... [2024-06-04 14:48:43,196 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 14:48:43,199 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 14:48:43,200 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 14:48:43,200 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 14:48:43,201 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:48:43" (1/1) ... [2024-06-04 14:48:43,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:48:43,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 14:48:43,233 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) [2024-06-04 14:48:43,264 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 [2024-06-04 14:48:43,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 14:48:43,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 14:48:43,278 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 14:48:43,279 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 14:48:43,279 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 14:48:43,279 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 14:48:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-04 14:48:43,280 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-04 14:48:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 14:48:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 14:48:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 14:48:43,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 14:48:43,282 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 14:48:43,441 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 14:48:43,444 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 14:48:43,905 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 14:48:43,906 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 14:48:44,119 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 14:48:44,119 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 14:48:44,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:48:44 BoogieIcfgContainer [2024-06-04 14:48:44,120 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 14:48:44,122 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 14:48:44,122 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 14:48:44,124 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 14:48:44,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:48:40" (1/4) ... [2024-06-04 14:48:44,125 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e4e87 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 02:48:44, skipping insertion in model container [2024-06-04 14:48:44,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 02:48:42" (2/4) ... [2024-06-04 14:48:44,125 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e4e87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 02:48:44, skipping insertion in model container [2024-06-04 14:48:44,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:48:43" (3/4) ... [2024-06-04 14:48:44,126 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e4e87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 02:48:44, skipping insertion in model container [2024-06-04 14:48:44,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:48:44" (4/4) ... [2024-06-04 14:48:44,127 INFO L112 eAbstractionObserver]: Analyzing ICFG mix015.opt.i [2024-06-04 14:48:44,144 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 14:48:44,144 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-04 14:48:44,145 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 14:48:44,207 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 14:48:44,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 44 transitions, 100 flow [2024-06-04 14:48:44,275 INFO L124 PetriNetUnfolderBase]: 0/41 cut-off events. [2024-06-04 14:48:44,275 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:48:44,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 41 events. 0/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 77 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-04 14:48:44,278 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 44 transitions, 100 flow [2024-06-04 14:48:44,282 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 35 transitions, 79 flow [2024-06-04 14:48:44,297 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 14:48:44,305 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;@49e224f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 14:48:44,305 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-04 14:48:44,310 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 14:48:44,310 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-04 14:48:44,310 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:48:44,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:44,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 14:48:44,311 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:48:44,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:44,317 INFO L85 PathProgramCache]: Analyzing trace with hash -408876045, now seen corresponding path program 1 times [2024-06-04 14:48:44,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:44,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992000555] [2024-06-04 14:48:44,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:44,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:45,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:48:45,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:45,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992000555] [2024-06-04 14:48:45,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992000555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:45,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:45,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 14:48:45,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136217456] [2024-06-04 14:48:45,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:45,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 14:48:45,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:45,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 14:48:45,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 14:48:45,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-06-04 14:48:45,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:45,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:45,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-06-04 14:48:45,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:46,319 INFO L124 PetriNetUnfolderBase]: 1116/1773 cut-off events. [2024-06-04 14:48:46,319 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-06-04 14:48:46,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3526 conditions, 1773 events. 1116/1773 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9247 event pairs, 765 based on Foata normal form. 1/1693 useless extension candidates. Maximal degree in co-relation 3511. Up to 1676 conditions per place. [2024-06-04 14:48:46,340 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 33 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-04 14:48:46,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 179 flow [2024-06-04 14:48:46,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 14:48:46,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 14:48:46,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-06-04 14:48:46,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2024-06-04 14:48:46,354 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 79 flow. Second operand 3 states and 82 transitions. [2024-06-04 14:48:46,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 179 flow [2024-06-04 14:48:46,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 174 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-04 14:48:46,362 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 106 flow [2024-06-04 14:48:46,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-06-04 14:48:46,367 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2024-06-04 14:48:46,367 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 106 flow [2024-06-04 14:48:46,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:46,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:46,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:48:46,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 14:48:46,368 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:48:46,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:46,369 INFO L85 PathProgramCache]: Analyzing trace with hash -2087833902, now seen corresponding path program 1 times [2024-06-04 14:48:46,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:46,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043905599] [2024-06-04 14:48:46,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:46,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:47,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:48:47,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:47,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043905599] [2024-06-04 14:48:47,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043905599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:47,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:47,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 14:48:47,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063228708] [2024-06-04 14:48:47,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:47,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 14:48:47,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:47,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 14:48:47,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-04 14:48:47,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-04 14:48:47,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:47,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:47,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-04 14:48:47,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:47,857 INFO L124 PetriNetUnfolderBase]: 1280/1969 cut-off events. [2024-06-04 14:48:47,857 INFO L125 PetriNetUnfolderBase]: For 398/398 co-relation queries the response was YES. [2024-06-04 14:48:47,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4492 conditions, 1969 events. 1280/1969 cut-off events. For 398/398 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9959 event pairs, 750 based on Foata normal form. 3/1949 useless extension candidates. Maximal degree in co-relation 4477. Up to 1897 conditions per place. [2024-06-04 14:48:47,869 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 41 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2024-06-04 14:48:47,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 55 transitions, 248 flow [2024-06-04 14:48:47,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 14:48:47,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 14:48:47,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-06-04 14:48:47,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5852272727272727 [2024-06-04 14:48:47,872 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 106 flow. Second operand 4 states and 103 transitions. [2024-06-04 14:48:47,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 55 transitions, 248 flow [2024-06-04 14:48:47,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 55 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 14:48:47,874 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 142 flow [2024-06-04 14:48:47,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-06-04 14:48:47,875 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2024-06-04 14:48:47,875 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 142 flow [2024-06-04 14:48:47,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:47,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:47,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:48:47,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 14:48:47,876 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:48:47,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:47,877 INFO L85 PathProgramCache]: Analyzing trace with hash -298340792, now seen corresponding path program 1 times [2024-06-04 14:48:47,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:47,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850678728] [2024-06-04 14:48:47,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:47,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:49,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:48:49,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:49,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850678728] [2024-06-04 14:48:49,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850678728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:49,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:49,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 14:48:49,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233598766] [2024-06-04 14:48:49,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:49,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 14:48:49,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:49,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 14:48:49,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-04 14:48:49,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:48:49,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 142 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:49,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:49,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:48:49,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:49,560 INFO L124 PetriNetUnfolderBase]: 1558/2372 cut-off events. [2024-06-04 14:48:49,560 INFO L125 PetriNetUnfolderBase]: For 1303/1303 co-relation queries the response was YES. [2024-06-04 14:48:49,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5990 conditions, 2372 events. 1558/2372 cut-off events. For 1303/1303 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11847 event pairs, 839 based on Foata normal form. 3/2362 useless extension candidates. Maximal degree in co-relation 5973. Up to 2286 conditions per place. [2024-06-04 14:48:49,573 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 49 selfloop transitions, 10 changer transitions 0/65 dead transitions. [2024-06-04 14:48:49,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 65 transitions, 328 flow [2024-06-04 14:48:49,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:48:49,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:48:49,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-06-04 14:48:49,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5545454545454546 [2024-06-04 14:48:49,577 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 142 flow. Second operand 5 states and 122 transitions. [2024-06-04 14:48:49,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 65 transitions, 328 flow [2024-06-04 14:48:49,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 65 transitions, 314 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-04 14:48:49,580 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 178 flow [2024-06-04 14:48:49,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-06-04 14:48:49,580 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 6 predicate places. [2024-06-04 14:48:49,581 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 178 flow [2024-06-04 14:48:49,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:49,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:49,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:48:49,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 14:48:49,582 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:48:49,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:49,582 INFO L85 PathProgramCache]: Analyzing trace with hash -658629199, now seen corresponding path program 1 times [2024-06-04 14:48:49,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:49,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167408678] [2024-06-04 14:48:49,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:49,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:50,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:48:50,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:50,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167408678] [2024-06-04 14:48:50,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167408678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:50,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:50,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:48:50,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37068026] [2024-06-04 14:48:50,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:50,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:48:50,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:50,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:48:50,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:48:50,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:48:50,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 178 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:50,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:50,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:48:50,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:51,369 INFO L124 PetriNetUnfolderBase]: 1552/2376 cut-off events. [2024-06-04 14:48:51,369 INFO L125 PetriNetUnfolderBase]: For 2422/2422 co-relation queries the response was YES. [2024-06-04 14:48:51,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6564 conditions, 2376 events. 1552/2376 cut-off events. For 2422/2422 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11950 event pairs, 697 based on Foata normal form. 3/2373 useless extension candidates. Maximal degree in co-relation 6546. Up to 2262 conditions per place. [2024-06-04 14:48:51,387 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 56 selfloop transitions, 13 changer transitions 0/75 dead transitions. [2024-06-04 14:48:51,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 75 transitions, 406 flow [2024-06-04 14:48:51,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:48:51,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:48:51,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-04 14:48:51,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-06-04 14:48:51,391 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 178 flow. Second operand 6 states and 144 transitions. [2024-06-04 14:48:51,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 75 transitions, 406 flow [2024-06-04 14:48:51,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 75 transitions, 382 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-04 14:48:51,397 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 214 flow [2024-06-04 14:48:51,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2024-06-04 14:48:51,399 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 9 predicate places. [2024-06-04 14:48:51,399 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 214 flow [2024-06-04 14:48:51,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:51,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:51,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:48:51,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 14:48:51,400 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:48:51,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:51,401 INFO L85 PathProgramCache]: Analyzing trace with hash 848621293, now seen corresponding path program 1 times [2024-06-04 14:48:51,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:51,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350237396] [2024-06-04 14:48:51,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:51,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:52,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:48:52,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:52,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350237396] [2024-06-04 14:48:52,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350237396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:52,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:52,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:48:52,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5748640] [2024-06-04 14:48:52,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:52,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:48:52,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:52,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:48:52,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:48:52,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:48:52,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:52,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:52,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:48:52,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:52,964 INFO L124 PetriNetUnfolderBase]: 1495/2423 cut-off events. [2024-06-04 14:48:52,964 INFO L125 PetriNetUnfolderBase]: For 3673/3673 co-relation queries the response was YES. [2024-06-04 14:48:52,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7040 conditions, 2423 events. 1495/2423 cut-off events. For 3673/3673 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 12825 event pairs, 734 based on Foata normal form. 4/2418 useless extension candidates. Maximal degree in co-relation 7021. Up to 2212 conditions per place. [2024-06-04 14:48:52,981 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 46 selfloop transitions, 8 changer transitions 0/62 dead transitions. [2024-06-04 14:48:52,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 62 transitions, 368 flow [2024-06-04 14:48:52,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:48:52,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:48:52,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-06-04 14:48:52,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4909090909090909 [2024-06-04 14:48:52,983 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 214 flow. Second operand 5 states and 108 transitions. [2024-06-04 14:48:52,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 62 transitions, 368 flow [2024-06-04 14:48:52,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 62 transitions, 334 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-04 14:48:52,990 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 226 flow [2024-06-04 14:48:52,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=226, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-06-04 14:48:52,992 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 10 predicate places. [2024-06-04 14:48:52,992 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 226 flow [2024-06-04 14:48:52,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:52,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:52,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:48:52,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 14:48:52,997 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:48:52,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:52,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1629841760, now seen corresponding path program 1 times [2024-06-04 14:48:52,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:52,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395418738] [2024-06-04 14:48:52,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:52,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:54,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:48:54,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:54,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395418738] [2024-06-04 14:48:54,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395418738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:54,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:54,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:48:54,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046690061] [2024-06-04 14:48:54,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:54,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:48:54,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:54,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:48:54,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:48:54,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:48:54,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 226 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:54,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:54,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:48:54,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:54,986 INFO L124 PetriNetUnfolderBase]: 1746/2689 cut-off events. [2024-06-04 14:48:54,986 INFO L125 PetriNetUnfolderBase]: For 5952/5952 co-relation queries the response was YES. [2024-06-04 14:48:54,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8556 conditions, 2689 events. 1746/2689 cut-off events. For 5952/5952 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13492 event pairs, 828 based on Foata normal form. 4/2689 useless extension candidates. Maximal degree in co-relation 8535. Up to 2516 conditions per place. [2024-06-04 14:48:55,008 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 56 selfloop transitions, 16 changer transitions 0/79 dead transitions. [2024-06-04 14:48:55,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 79 transitions, 486 flow [2024-06-04 14:48:55,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:48:55,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:48:55,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-04 14:48:55,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4962121212121212 [2024-06-04 14:48:55,010 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 226 flow. Second operand 6 states and 131 transitions. [2024-06-04 14:48:55,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 79 transitions, 486 flow [2024-06-04 14:48:55,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 79 transitions, 464 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-04 14:48:55,015 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 290 flow [2024-06-04 14:48:55,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=290, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2024-06-04 14:48:55,018 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 13 predicate places. [2024-06-04 14:48:55,018 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 290 flow [2024-06-04 14:48:55,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:55,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:55,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:48:55,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 14:48:55,019 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:48:55,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:55,020 INFO L85 PathProgramCache]: Analyzing trace with hash 540390830, now seen corresponding path program 2 times [2024-06-04 14:48:55,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:55,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538763612] [2024-06-04 14:48:55,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:55,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:56,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:48:56,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:56,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538763612] [2024-06-04 14:48:56,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538763612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:56,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:56,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:48:56,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792079028] [2024-06-04 14:48:56,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:56,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:48:56,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:56,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:48:56,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:48:56,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:48:56,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 290 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:56,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:56,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:48:56,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:56,827 INFO L124 PetriNetUnfolderBase]: 1736/2677 cut-off events. [2024-06-04 14:48:56,827 INFO L125 PetriNetUnfolderBase]: For 8114/8126 co-relation queries the response was YES. [2024-06-04 14:48:56,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9146 conditions, 2677 events. 1736/2677 cut-off events. For 8114/8126 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13466 event pairs, 827 based on Foata normal form. 14/2688 useless extension candidates. Maximal degree in co-relation 9124. Up to 2508 conditions per place. [2024-06-04 14:48:56,853 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 50 selfloop transitions, 16 changer transitions 0/73 dead transitions. [2024-06-04 14:48:56,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 73 transitions, 464 flow [2024-06-04 14:48:56,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:48:56,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:48:56,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-06-04 14:48:56,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4734848484848485 [2024-06-04 14:48:56,856 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 290 flow. Second operand 6 states and 125 transitions. [2024-06-04 14:48:56,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 73 transitions, 464 flow [2024-06-04 14:48:56,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 73 transitions, 432 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-04 14:48:56,865 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 298 flow [2024-06-04 14:48:56,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=298, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2024-06-04 14:48:56,866 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 17 predicate places. [2024-06-04 14:48:56,866 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 298 flow [2024-06-04 14:48:56,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:56,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:56,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:48:56,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 14:48:56,867 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:48:56,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:56,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1315049636, now seen corresponding path program 1 times [2024-06-04 14:48:56,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:56,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339867247] [2024-06-04 14:48:56,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:56,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:58,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:48:58,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:58,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339867247] [2024-06-04 14:48:58,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339867247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:58,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:58,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:48:58,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491487358] [2024-06-04 14:48:58,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:58,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:48:58,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:58,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:48:58,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:48:58,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:48:58,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 298 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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) [2024-06-04 14:48:58,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:58,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:48:58,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:59,212 INFO L124 PetriNetUnfolderBase]: 1823/2760 cut-off events. [2024-06-04 14:48:59,213 INFO L125 PetriNetUnfolderBase]: For 9787/9787 co-relation queries the response was YES. [2024-06-04 14:48:59,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9682 conditions, 2760 events. 1823/2760 cut-off events. For 9787/9787 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 13539 event pairs, 592 based on Foata normal form. 6/2764 useless extension candidates. Maximal degree in co-relation 9658. Up to 2610 conditions per place. [2024-06-04 14:48:59,228 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 77 selfloop transitions, 18 changer transitions 0/100 dead transitions. [2024-06-04 14:48:59,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 100 transitions, 614 flow [2024-06-04 14:48:59,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:48:59,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:48:59,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-06-04 14:48:59,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5028409090909091 [2024-06-04 14:48:59,233 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 298 flow. Second operand 8 states and 177 transitions. [2024-06-04 14:48:59,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 100 transitions, 614 flow [2024-06-04 14:48:59,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 100 transitions, 574 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-04 14:48:59,243 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 335 flow [2024-06-04 14:48:59,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=335, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2024-06-04 14:48:59,245 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 20 predicate places. [2024-06-04 14:48:59,246 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 335 flow [2024-06-04 14:48:59,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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) [2024-06-04 14:48:59,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:59,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:48:59,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 14:48:59,246 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:48:59,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:59,247 INFO L85 PathProgramCache]: Analyzing trace with hash 864632944, now seen corresponding path program 1 times [2024-06-04 14:48:59,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:59,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27714435] [2024-06-04 14:48:59,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:59,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:00,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:00,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:00,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27714435] [2024-06-04 14:49:00,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27714435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:00,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:00,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:49:00,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045129357] [2024-06-04 14:49:00,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:00,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:49:00,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:00,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:49:00,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:49:00,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:49:00,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 335 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:00,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:00,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:49:00,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:01,173 INFO L124 PetriNetUnfolderBase]: 1845/2796 cut-off events. [2024-06-04 14:49:01,174 INFO L125 PetriNetUnfolderBase]: For 12657/12657 co-relation queries the response was YES. [2024-06-04 14:49:01,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10394 conditions, 2796 events. 1845/2796 cut-off events. For 12657/12657 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13746 event pairs, 635 based on Foata normal form. 4/2796 useless extension candidates. Maximal degree in co-relation 10369. Up to 2586 conditions per place. [2024-06-04 14:49:01,190 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 68 selfloop transitions, 24 changer transitions 0/97 dead transitions. [2024-06-04 14:49:01,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 97 transitions, 679 flow [2024-06-04 14:49:01,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:49:01,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:49:01,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-06-04 14:49:01,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-06-04 14:49:01,192 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 335 flow. Second operand 7 states and 147 transitions. [2024-06-04 14:49:01,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 97 transitions, 679 flow [2024-06-04 14:49:01,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 97 transitions, 628 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-04 14:49:01,201 INFO L231 Difference]: Finished difference. Result has 67 places, 66 transitions, 398 flow [2024-06-04 14:49:01,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=398, PETRI_PLACES=67, PETRI_TRANSITIONS=66} [2024-06-04 14:49:01,203 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 22 predicate places. [2024-06-04 14:49:01,203 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 66 transitions, 398 flow [2024-06-04 14:49:01,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:01,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:01,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:01,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 14:49:01,204 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:01,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:01,204 INFO L85 PathProgramCache]: Analyzing trace with hash 864639454, now seen corresponding path program 2 times [2024-06-04 14:49:01,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:01,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283453465] [2024-06-04 14:49:01,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:01,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:01,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:02,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:02,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:02,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283453465] [2024-06-04 14:49:02,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283453465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:02,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:02,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:49:02,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813526846] [2024-06-04 14:49:02,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:02,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:49:02,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:02,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:49:02,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:49:02,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:49:02,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 398 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:02,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:02,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:49:02,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:03,097 INFO L124 PetriNetUnfolderBase]: 1867/2828 cut-off events. [2024-06-04 14:49:03,098 INFO L125 PetriNetUnfolderBase]: For 15919/15919 co-relation queries the response was YES. [2024-06-04 14:49:03,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11133 conditions, 2828 events. 1867/2828 cut-off events. For 15919/15919 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13938 event pairs, 635 based on Foata normal form. 4/2828 useless extension candidates. Maximal degree in co-relation 11106. Up to 2605 conditions per place. [2024-06-04 14:49:03,117 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 66 selfloop transitions, 26 changer transitions 0/97 dead transitions. [2024-06-04 14:49:03,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 97 transitions, 718 flow [2024-06-04 14:49:03,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:49:03,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:49:03,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 145 transitions. [2024-06-04 14:49:03,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4707792207792208 [2024-06-04 14:49:03,120 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 398 flow. Second operand 7 states and 145 transitions. [2024-06-04 14:49:03,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 97 transitions, 718 flow [2024-06-04 14:49:03,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 97 transitions, 672 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-04 14:49:03,134 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 444 flow [2024-06-04 14:49:03,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=444, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2024-06-04 14:49:03,136 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 26 predicate places. [2024-06-04 14:49:03,136 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 444 flow [2024-06-04 14:49:03,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:03,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:03,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:03,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 14:49:03,137 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:03,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:03,138 INFO L85 PathProgramCache]: Analyzing trace with hash -427752004, now seen corresponding path program 3 times [2024-06-04 14:49:03,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:03,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961782886] [2024-06-04 14:49:03,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:03,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:04,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:04,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:04,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961782886] [2024-06-04 14:49:04,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961782886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:04,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:04,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:49:04,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992619983] [2024-06-04 14:49:04,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:04,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:49:04,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:04,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:49:04,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:49:04,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:49:04,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 444 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:04,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:04,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:49:04,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:04,870 INFO L124 PetriNetUnfolderBase]: 1857/2817 cut-off events. [2024-06-04 14:49:04,870 INFO L125 PetriNetUnfolderBase]: For 18464/18476 co-relation queries the response was YES. [2024-06-04 14:49:04,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11369 conditions, 2817 events. 1857/2817 cut-off events. For 18464/18476 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13806 event pairs, 646 based on Foata normal form. 11/2825 useless extension candidates. Maximal degree in co-relation 11340. Up to 2597 conditions per place. [2024-06-04 14:49:04,888 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 60 selfloop transitions, 26 changer transitions 0/91 dead transitions. [2024-06-04 14:49:04,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 91 transitions, 670 flow [2024-06-04 14:49:04,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:49:04,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:49:04,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-04 14:49:04,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512987012987013 [2024-06-04 14:49:04,890 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 444 flow. Second operand 7 states and 139 transitions. [2024-06-04 14:49:04,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 91 transitions, 670 flow [2024-06-04 14:49:04,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 91 transitions, 606 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-04 14:49:04,904 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 440 flow [2024-06-04 14:49:04,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=440, PETRI_PLACES=74, PETRI_TRANSITIONS=69} [2024-06-04 14:49:04,905 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 29 predicate places. [2024-06-04 14:49:04,905 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 440 flow [2024-06-04 14:49:04,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:04,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:04,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:04,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 14:49:04,906 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:04,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:04,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1101122644, now seen corresponding path program 1 times [2024-06-04 14:49:04,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:04,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554582787] [2024-06-04 14:49:04,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:04,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:06,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:06,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:06,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554582787] [2024-06-04 14:49:06,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554582787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:06,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:06,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:49:06,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290937877] [2024-06-04 14:49:06,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:06,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:49:06,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:06,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:49:06,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:49:06,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:49:06,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 440 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:06,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:06,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:49:06,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:07,166 INFO L124 PetriNetUnfolderBase]: 1532/2459 cut-off events. [2024-06-04 14:49:07,166 INFO L125 PetriNetUnfolderBase]: For 17615/17615 co-relation queries the response was YES. [2024-06-04 14:49:07,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9869 conditions, 2459 events. 1532/2459 cut-off events. For 17615/17615 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 12830 event pairs, 547 based on Foata normal form. 4/2440 useless extension candidates. Maximal degree in co-relation 9839. Up to 2219 conditions per place. [2024-06-04 14:49:07,183 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 70 selfloop transitions, 13 changer transitions 0/94 dead transitions. [2024-06-04 14:49:07,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 94 transitions, 699 flow [2024-06-04 14:49:07,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:49:07,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:49:07,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-04 14:49:07,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4675324675324675 [2024-06-04 14:49:07,185 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 440 flow. Second operand 7 states and 144 transitions. [2024-06-04 14:49:07,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 94 transitions, 699 flow [2024-06-04 14:49:07,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 94 transitions, 618 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-04 14:49:07,202 INFO L231 Difference]: Finished difference. Result has 75 places, 74 transitions, 445 flow [2024-06-04 14:49:07,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=445, PETRI_PLACES=75, PETRI_TRANSITIONS=74} [2024-06-04 14:49:07,203 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 30 predicate places. [2024-06-04 14:49:07,203 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 74 transitions, 445 flow [2024-06-04 14:49:07,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:07,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:07,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:07,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 14:49:07,204 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:07,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:07,204 INFO L85 PathProgramCache]: Analyzing trace with hash -33405023, now seen corresponding path program 1 times [2024-06-04 14:49:07,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:07,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523475812] [2024-06-04 14:49:07,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:07,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:08,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:08,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:08,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523475812] [2024-06-04 14:49:08,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523475812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:08,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:08,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:49:08,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37504993] [2024-06-04 14:49:08,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:08,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:49:08,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:08,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:49:08,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:49:08,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-04 14:49:08,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 74 transitions, 445 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 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) [2024-06-04 14:49:08,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:08,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-04 14:49:08,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:08,745 INFO L124 PetriNetUnfolderBase]: 1428/2353 cut-off events. [2024-06-04 14:49:08,745 INFO L125 PetriNetUnfolderBase]: For 19904/19904 co-relation queries the response was YES. [2024-06-04 14:49:08,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9936 conditions, 2353 events. 1428/2353 cut-off events. For 19904/19904 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 12668 event pairs, 556 based on Foata normal form. 1/2352 useless extension candidates. Maximal degree in co-relation 9904. Up to 2130 conditions per place. [2024-06-04 14:49:08,763 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 64 selfloop transitions, 8 changer transitions 0/85 dead transitions. [2024-06-04 14:49:08,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 85 transitions, 631 flow [2024-06-04 14:49:08,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:49:08,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:49:08,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-06-04 14:49:08,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4818181818181818 [2024-06-04 14:49:08,765 INFO L175 Difference]: Start difference. First operand has 75 places, 74 transitions, 445 flow. Second operand 5 states and 106 transitions. [2024-06-04 14:49:08,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 85 transitions, 631 flow [2024-06-04 14:49:08,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 85 transitions, 590 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-04 14:49:08,787 INFO L231 Difference]: Finished difference. Result has 76 places, 77 transitions, 454 flow [2024-06-04 14:49:08,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=454, PETRI_PLACES=76, PETRI_TRANSITIONS=77} [2024-06-04 14:49:08,788 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 31 predicate places. [2024-06-04 14:49:08,788 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 77 transitions, 454 flow [2024-06-04 14:49:08,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 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) [2024-06-04 14:49:08,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:08,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:08,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 14:49:08,789 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:08,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:08,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1379464191, now seen corresponding path program 1 times [2024-06-04 14:49:08,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:08,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434816901] [2024-06-04 14:49:08,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:08,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:10,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:10,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:10,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434816901] [2024-06-04 14:49:10,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434816901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:10,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:10,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:49:10,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941238858] [2024-06-04 14:49:10,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:10,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:49:10,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:10,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:49:10,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:49:10,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:49:10,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 77 transitions, 454 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:10,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:10,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:49:10,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:10,965 INFO L124 PetriNetUnfolderBase]: 1868/2826 cut-off events. [2024-06-04 14:49:10,965 INFO L125 PetriNetUnfolderBase]: For 27080/27082 co-relation queries the response was YES. [2024-06-04 14:49:10,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12562 conditions, 2826 events. 1868/2826 cut-off events. For 27080/27082 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13809 event pairs, 588 based on Foata normal form. 4/2827 useless extension candidates. Maximal degree in co-relation 12529. Up to 2531 conditions per place. [2024-06-04 14:49:10,985 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 79 selfloop transitions, 37 changer transitions 0/121 dead transitions. [2024-06-04 14:49:10,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 121 transitions, 902 flow [2024-06-04 14:49:10,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:49:10,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:49:10,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-04 14:49:10,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48011363636363635 [2024-06-04 14:49:10,987 INFO L175 Difference]: Start difference. First operand has 76 places, 77 transitions, 454 flow. Second operand 8 states and 169 transitions. [2024-06-04 14:49:10,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 121 transitions, 902 flow [2024-06-04 14:49:11,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 121 transitions, 874 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-04 14:49:11,014 INFO L231 Difference]: Finished difference. Result has 81 places, 83 transitions, 578 flow [2024-06-04 14:49:11,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=578, PETRI_PLACES=81, PETRI_TRANSITIONS=83} [2024-06-04 14:49:11,015 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 36 predicate places. [2024-06-04 14:49:11,015 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 83 transitions, 578 flow [2024-06-04 14:49:11,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:11,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:11,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:11,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 14:49:11,016 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:11,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:11,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1379613921, now seen corresponding path program 2 times [2024-06-04 14:49:11,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:11,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870785734] [2024-06-04 14:49:11,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:11,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:12,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:12,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:12,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870785734] [2024-06-04 14:49:12,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870785734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:12,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:12,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:49:12,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25018848] [2024-06-04 14:49:12,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:12,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:49:12,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:12,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:49:12,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:49:12,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:49:12,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 83 transitions, 578 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:12,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:12,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:49:12,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:13,127 INFO L124 PetriNetUnfolderBase]: 1890/2858 cut-off events. [2024-06-04 14:49:13,127 INFO L125 PetriNetUnfolderBase]: For 31658/31660 co-relation queries the response was YES. [2024-06-04 14:49:13,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13459 conditions, 2858 events. 1890/2858 cut-off events. For 31658/31660 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 14013 event pairs, 588 based on Foata normal form. 4/2859 useless extension candidates. Maximal degree in co-relation 13425. Up to 2550 conditions per place. [2024-06-04 14:49:13,145 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 78 selfloop transitions, 38 changer transitions 0/121 dead transitions. [2024-06-04 14:49:13,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 121 transitions, 996 flow [2024-06-04 14:49:13,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:49:13,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:49:13,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2024-06-04 14:49:13,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744318181818182 [2024-06-04 14:49:13,147 INFO L175 Difference]: Start difference. First operand has 81 places, 83 transitions, 578 flow. Second operand 8 states and 167 transitions. [2024-06-04 14:49:13,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 121 transitions, 996 flow [2024-06-04 14:49:13,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 121 transitions, 917 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-04 14:49:13,181 INFO L231 Difference]: Finished difference. Result has 85 places, 86 transitions, 621 flow [2024-06-04 14:49:13,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=621, PETRI_PLACES=85, PETRI_TRANSITIONS=86} [2024-06-04 14:49:13,181 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 40 predicate places. [2024-06-04 14:49:13,181 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 86 transitions, 621 flow [2024-06-04 14:49:13,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:13,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:13,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:13,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 14:49:13,182 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:13,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:13,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1034020779, now seen corresponding path program 3 times [2024-06-04 14:49:13,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:13,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761022732] [2024-06-04 14:49:13,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:13,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:14,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:14,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:14,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761022732] [2024-06-04 14:49:14,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761022732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:14,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:14,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:49:14,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594042492] [2024-06-04 14:49:14,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:14,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:49:14,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:14,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:49:14,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:49:14,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:49:14,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 86 transitions, 621 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:14,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:14,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:49:14,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:15,204 INFO L124 PetriNetUnfolderBase]: 1912/2890 cut-off events. [2024-06-04 14:49:15,204 INFO L125 PetriNetUnfolderBase]: For 35264/35266 co-relation queries the response was YES. [2024-06-04 14:49:15,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13829 conditions, 2890 events. 1912/2890 cut-off events. For 35264/35266 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 14130 event pairs, 593 based on Foata normal form. 4/2891 useless extension candidates. Maximal degree in co-relation 13793. Up to 2569 conditions per place. [2024-06-04 14:49:15,220 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 76 selfloop transitions, 40 changer transitions 0/121 dead transitions. [2024-06-04 14:49:15,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 121 transitions, 1033 flow [2024-06-04 14:49:15,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:49:15,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:49:15,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-04 14:49:15,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-04 14:49:15,222 INFO L175 Difference]: Start difference. First operand has 85 places, 86 transitions, 621 flow. Second operand 8 states and 165 transitions. [2024-06-04 14:49:15,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 121 transitions, 1033 flow [2024-06-04 14:49:15,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 121 transitions, 955 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-04 14:49:15,265 INFO L231 Difference]: Finished difference. Result has 88 places, 89 transitions, 667 flow [2024-06-04 14:49:15,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=667, PETRI_PLACES=88, PETRI_TRANSITIONS=89} [2024-06-04 14:49:15,265 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 43 predicate places. [2024-06-04 14:49:15,266 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 89 transitions, 667 flow [2024-06-04 14:49:15,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:15,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:15,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:15,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 14:49:15,266 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:15,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:15,267 INFO L85 PathProgramCache]: Analyzing trace with hash -375408755, now seen corresponding path program 4 times [2024-06-04 14:49:15,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:15,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668375140] [2024-06-04 14:49:15,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:15,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:16,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:16,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:16,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668375140] [2024-06-04 14:49:16,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668375140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:16,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:16,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:49:16,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604131467] [2024-06-04 14:49:16,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:16,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:49:16,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:16,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:49:16,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:49:16,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:49:16,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 89 transitions, 667 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:16,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:16,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:49:16,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:17,289 INFO L124 PetriNetUnfolderBase]: 1902/2885 cut-off events. [2024-06-04 14:49:17,289 INFO L125 PetriNetUnfolderBase]: For 38897/38905 co-relation queries the response was YES. [2024-06-04 14:49:17,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13961 conditions, 2885 events. 1902/2885 cut-off events. For 38897/38905 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 14132 event pairs, 616 based on Foata normal form. 7/2889 useless extension candidates. Maximal degree in co-relation 13924. Up to 2561 conditions per place. [2024-06-04 14:49:17,306 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 71 selfloop transitions, 40 changer transitions 0/116 dead transitions. [2024-06-04 14:49:17,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 116 transitions, 963 flow [2024-06-04 14:49:17,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:49:17,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:49:17,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-04 14:49:17,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45170454545454547 [2024-06-04 14:49:17,309 INFO L175 Difference]: Start difference. First operand has 88 places, 89 transitions, 667 flow. Second operand 8 states and 159 transitions. [2024-06-04 14:49:17,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 116 transitions, 963 flow [2024-06-04 14:49:17,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 116 transitions, 872 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-04 14:49:17,371 INFO L231 Difference]: Finished difference. Result has 91 places, 89 transitions, 664 flow [2024-06-04 14:49:17,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=664, PETRI_PLACES=91, PETRI_TRANSITIONS=89} [2024-06-04 14:49:17,371 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 46 predicate places. [2024-06-04 14:49:17,372 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 89 transitions, 664 flow [2024-06-04 14:49:17,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:17,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:17,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:17,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 14:49:17,372 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:17,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:17,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1035554129, now seen corresponding path program 1 times [2024-06-04 14:49:17,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:17,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397074666] [2024-06-04 14:49:17,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:17,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:18,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:18,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:18,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397074666] [2024-06-04 14:49:18,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397074666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:18,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:18,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:49:18,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207863696] [2024-06-04 14:49:18,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:18,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:49:18,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:18,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:49:18,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:49:18,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-04 14:49:18,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 89 transitions, 664 flow. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:18,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:18,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-04 14:49:18,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:19,148 INFO L124 PetriNetUnfolderBase]: 1453/2404 cut-off events. [2024-06-04 14:49:19,148 INFO L125 PetriNetUnfolderBase]: For 34899/34899 co-relation queries the response was YES. [2024-06-04 14:49:19,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11684 conditions, 2404 events. 1453/2404 cut-off events. For 34899/34899 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 12962 event pairs, 532 based on Foata normal form. 2/2400 useless extension candidates. Maximal degree in co-relation 11646. Up to 2133 conditions per place. [2024-06-04 14:49:19,161 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 74 selfloop transitions, 11 changer transitions 0/102 dead transitions. [2024-06-04 14:49:19,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 102 transitions, 884 flow [2024-06-04 14:49:19,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:49:19,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:49:19,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-06-04 14:49:19,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-06-04 14:49:19,163 INFO L175 Difference]: Start difference. First operand has 91 places, 89 transitions, 664 flow. Second operand 6 states and 124 transitions. [2024-06-04 14:49:19,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 102 transitions, 884 flow [2024-06-04 14:49:19,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 102 transitions, 749 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 14:49:19,191 INFO L231 Difference]: Finished difference. Result has 87 places, 92 transitions, 589 flow [2024-06-04 14:49:19,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=589, PETRI_PLACES=87, PETRI_TRANSITIONS=92} [2024-06-04 14:49:19,192 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 42 predicate places. [2024-06-04 14:49:19,192 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 92 transitions, 589 flow [2024-06-04 14:49:19,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:19,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:19,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:19,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 14:49:19,193 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:19,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:19,193 INFO L85 PathProgramCache]: Analyzing trace with hash -186286177, now seen corresponding path program 1 times [2024-06-04 14:49:19,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:19,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172643643] [2024-06-04 14:49:19,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:19,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:20,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:20,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:20,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172643643] [2024-06-04 14:49:20,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172643643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:20,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:20,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:49:20,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654762629] [2024-06-04 14:49:20,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:20,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:49:20,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:20,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:49:20,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:49:20,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:49:20,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 92 transitions, 589 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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) [2024-06-04 14:49:20,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:20,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:49:20,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:21,391 INFO L124 PetriNetUnfolderBase]: 1915/2909 cut-off events. [2024-06-04 14:49:21,392 INFO L125 PetriNetUnfolderBase]: For 45296/45296 co-relation queries the response was YES. [2024-06-04 14:49:21,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14489 conditions, 2909 events. 1915/2909 cut-off events. For 45296/45296 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 14329 event pairs, 627 based on Foata normal form. 4/2911 useless extension candidates. Maximal degree in co-relation 14451. Up to 2758 conditions per place. [2024-06-04 14:49:21,407 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 110 selfloop transitions, 20 changer transitions 0/135 dead transitions. [2024-06-04 14:49:21,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 135 transitions, 989 flow [2024-06-04 14:49:21,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:49:21,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:49:21,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-04 14:49:21,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45202020202020204 [2024-06-04 14:49:21,412 INFO L175 Difference]: Start difference. First operand has 87 places, 92 transitions, 589 flow. Second operand 9 states and 179 transitions. [2024-06-04 14:49:21,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 135 transitions, 989 flow [2024-06-04 14:49:21,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 135 transitions, 951 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-04 14:49:21,479 INFO L231 Difference]: Finished difference. Result has 92 places, 95 transitions, 641 flow [2024-06-04 14:49:21,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=641, PETRI_PLACES=92, PETRI_TRANSITIONS=95} [2024-06-04 14:49:21,480 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 47 predicate places. [2024-06-04 14:49:21,480 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 95 transitions, 641 flow [2024-06-04 14:49:21,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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) [2024-06-04 14:49:21,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:21,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:21,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 14:49:21,480 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:21,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:21,481 INFO L85 PathProgramCache]: Analyzing trace with hash -186281527, now seen corresponding path program 2 times [2024-06-04 14:49:21,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:21,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179430284] [2024-06-04 14:49:21,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:21,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:21,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:22,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:22,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:22,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179430284] [2024-06-04 14:49:22,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179430284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:22,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:22,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:49:22,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353147321] [2024-06-04 14:49:22,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:22,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:49:22,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:22,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:49:22,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:49:22,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:49:22,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 95 transitions, 641 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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) [2024-06-04 14:49:22,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:22,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:49:22,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:23,581 INFO L124 PetriNetUnfolderBase]: 1937/2944 cut-off events. [2024-06-04 14:49:23,582 INFO L125 PetriNetUnfolderBase]: For 50359/50361 co-relation queries the response was YES. [2024-06-04 14:49:23,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15236 conditions, 2944 events. 1937/2944 cut-off events. For 50359/50361 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 14554 event pairs, 543 based on Foata normal form. 4/2945 useless extension candidates. Maximal degree in co-relation 15197. Up to 2508 conditions per place. [2024-06-04 14:49:23,598 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 88 selfloop transitions, 51 changer transitions 0/144 dead transitions. [2024-06-04 14:49:23,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 144 transitions, 1191 flow [2024-06-04 14:49:23,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:49:23,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:49:23,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2024-06-04 14:49:23,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-06-04 14:49:23,600 INFO L175 Difference]: Start difference. First operand has 92 places, 95 transitions, 641 flow. Second operand 9 states and 189 transitions. [2024-06-04 14:49:23,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 144 transitions, 1191 flow [2024-06-04 14:49:23,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 144 transitions, 1125 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-04 14:49:23,637 INFO L231 Difference]: Finished difference. Result has 94 places, 101 transitions, 775 flow [2024-06-04 14:49:23,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=775, PETRI_PLACES=94, PETRI_TRANSITIONS=101} [2024-06-04 14:49:23,638 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 49 predicate places. [2024-06-04 14:49:23,638 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 101 transitions, 775 flow [2024-06-04 14:49:23,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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) [2024-06-04 14:49:23,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:23,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:23,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 14:49:23,639 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:23,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:23,639 INFO L85 PathProgramCache]: Analyzing trace with hash -557487113, now seen corresponding path program 3 times [2024-06-04 14:49:23,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:23,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263931232] [2024-06-04 14:49:23,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:23,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:24,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:24,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:24,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263931232] [2024-06-04 14:49:24,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263931232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:24,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:24,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:49:24,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383447672] [2024-06-04 14:49:24,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:24,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:49:24,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:24,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:49:24,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:49:24,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:49:24,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 101 transitions, 775 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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) [2024-06-04 14:49:24,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:24,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:49:24,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:25,774 INFO L124 PetriNetUnfolderBase]: 1959/2986 cut-off events. [2024-06-04 14:49:25,774 INFO L125 PetriNetUnfolderBase]: For 56992/56994 co-relation queries the response was YES. [2024-06-04 14:49:25,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16099 conditions, 2986 events. 1959/2986 cut-off events. For 56992/56994 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 14817 event pairs, 548 based on Foata normal form. 4/2987 useless extension candidates. Maximal degree in co-relation 16059. Up to 2527 conditions per place. [2024-06-04 14:49:25,792 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 87 selfloop transitions, 52 changer transitions 0/144 dead transitions. [2024-06-04 14:49:25,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 144 transitions, 1285 flow [2024-06-04 14:49:25,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:49:25,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:49:25,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 187 transitions. [2024-06-04 14:49:25,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-04 14:49:25,793 INFO L175 Difference]: Start difference. First operand has 94 places, 101 transitions, 775 flow. Second operand 9 states and 187 transitions. [2024-06-04 14:49:25,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 144 transitions, 1285 flow [2024-06-04 14:49:25,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 144 transitions, 1190 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-04 14:49:25,838 INFO L231 Difference]: Finished difference. Result has 98 places, 104 transitions, 840 flow [2024-06-04 14:49:25,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=840, PETRI_PLACES=98, PETRI_TRANSITIONS=104} [2024-06-04 14:49:25,839 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 53 predicate places. [2024-06-04 14:49:25,839 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 104 transitions, 840 flow [2024-06-04 14:49:25,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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) [2024-06-04 14:49:25,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:25,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:25,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 14:49:25,840 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:25,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:25,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1990120853, now seen corresponding path program 1 times [2024-06-04 14:49:25,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:25,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300207045] [2024-06-04 14:49:25,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:25,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:27,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:27,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:27,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300207045] [2024-06-04 14:49:27,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300207045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:27,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:27,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:49:27,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959319469] [2024-06-04 14:49:27,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:27,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:49:27,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:27,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:49:27,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:49:27,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:49:27,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 104 transitions, 840 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:27,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:27,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:49:27,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:28,006 INFO L124 PetriNetUnfolderBase]: 1859/2896 cut-off events. [2024-06-04 14:49:28,007 INFO L125 PetriNetUnfolderBase]: For 62078/62082 co-relation queries the response was YES. [2024-06-04 14:49:28,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16069 conditions, 2896 events. 1859/2896 cut-off events. For 62078/62082 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 14917 event pairs, 603 based on Foata normal form. 6/2899 useless extension candidates. Maximal degree in co-relation 16027. Up to 2647 conditions per place. [2024-06-04 14:49:28,023 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 104 selfloop transitions, 23 changer transitions 0/137 dead transitions. [2024-06-04 14:49:28,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 137 transitions, 1221 flow [2024-06-04 14:49:28,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:49:28,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:49:28,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-04 14:49:28,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630681818181818 [2024-06-04 14:49:28,025 INFO L175 Difference]: Start difference. First operand has 98 places, 104 transitions, 840 flow. Second operand 8 states and 163 transitions. [2024-06-04 14:49:28,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 137 transitions, 1221 flow [2024-06-04 14:49:28,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 137 transitions, 1111 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-04 14:49:28,064 INFO L231 Difference]: Finished difference. Result has 101 places, 109 transitions, 848 flow [2024-06-04 14:49:28,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=848, PETRI_PLACES=101, PETRI_TRANSITIONS=109} [2024-06-04 14:49:28,064 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 56 predicate places. [2024-06-04 14:49:28,065 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 109 transitions, 848 flow [2024-06-04 14:49:28,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:28,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:28,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:28,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 14:49:28,065 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:28,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:28,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1989874589, now seen corresponding path program 4 times [2024-06-04 14:49:28,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:28,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518381588] [2024-06-04 14:49:28,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:28,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:29,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:29,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:29,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518381588] [2024-06-04 14:49:29,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518381588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:29,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:29,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:49:29,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417759861] [2024-06-04 14:49:29,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:29,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:49:29,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:29,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:49:29,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:49:29,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:49:29,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 109 transitions, 848 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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) [2024-06-04 14:49:29,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:29,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:49:29,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:30,169 INFO L124 PetriNetUnfolderBase]: 1998/3065 cut-off events. [2024-06-04 14:49:30,170 INFO L125 PetriNetUnfolderBase]: For 67784/67786 co-relation queries the response was YES. [2024-06-04 14:49:30,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17179 conditions, 3065 events. 1998/3065 cut-off events. For 67784/67786 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 15420 event pairs, 573 based on Foata normal form. 4/3066 useless extension candidates. Maximal degree in co-relation 17135. Up to 2573 conditions per place. [2024-06-04 14:49:30,189 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 88 selfloop transitions, 56 changer transitions 0/149 dead transitions. [2024-06-04 14:49:30,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 149 transitions, 1373 flow [2024-06-04 14:49:30,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:49:30,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:49:30,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-04 14:49:30,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671717171717172 [2024-06-04 14:49:30,191 INFO L175 Difference]: Start difference. First operand has 101 places, 109 transitions, 848 flow. Second operand 9 states and 185 transitions. [2024-06-04 14:49:30,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 149 transitions, 1373 flow [2024-06-04 14:49:30,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 149 transitions, 1302 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-04 14:49:30,260 INFO L231 Difference]: Finished difference. Result has 105 places, 112 transitions, 940 flow [2024-06-04 14:49:30,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=940, PETRI_PLACES=105, PETRI_TRANSITIONS=112} [2024-06-04 14:49:30,261 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 60 predicate places. [2024-06-04 14:49:30,261 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 112 transitions, 940 flow [2024-06-04 14:49:30,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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) [2024-06-04 14:49:30,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:30,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:30,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 14:49:30,262 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:30,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:30,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1127230392, now seen corresponding path program 1 times [2024-06-04 14:49:30,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:30,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17629871] [2024-06-04 14:49:30,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:30,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:31,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:31,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:31,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17629871] [2024-06-04 14:49:31,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17629871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:31,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:31,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:49:31,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067828365] [2024-06-04 14:49:31,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:31,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:49:31,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:31,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:49:31,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:49:31,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:49:31,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 112 transitions, 940 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:31,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:31,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:49:31,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:31,785 INFO L124 PetriNetUnfolderBase]: 1740/2774 cut-off events. [2024-06-04 14:49:31,785 INFO L125 PetriNetUnfolderBase]: For 72881/72886 co-relation queries the response was YES. [2024-06-04 14:49:31,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16510 conditions, 2774 events. 1740/2774 cut-off events. For 72881/72886 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 14690 event pairs, 586 based on Foata normal form. 1/2757 useless extension candidates. Maximal degree in co-relation 16465. Up to 2549 conditions per place. [2024-06-04 14:49:31,802 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 103 selfloop transitions, 11 changer transitions 0/130 dead transitions. [2024-06-04 14:49:31,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 130 transitions, 1234 flow [2024-06-04 14:49:31,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:49:31,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:49:31,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-06-04 14:49:31,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-06-04 14:49:31,803 INFO L175 Difference]: Start difference. First operand has 105 places, 112 transitions, 940 flow. Second operand 6 states and 124 transitions. [2024-06-04 14:49:31,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 130 transitions, 1234 flow [2024-06-04 14:49:31,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 130 transitions, 1119 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-04 14:49:31,856 INFO L231 Difference]: Finished difference. Result has 105 places, 115 transitions, 887 flow [2024-06-04 14:49:31,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=887, PETRI_PLACES=105, PETRI_TRANSITIONS=115} [2024-06-04 14:49:31,857 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 60 predicate places. [2024-06-04 14:49:31,857 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 115 transitions, 887 flow [2024-06-04 14:49:31,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:31,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:31,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:31,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 14:49:31,858 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:31,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:31,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1606474995, now seen corresponding path program 2 times [2024-06-04 14:49:31,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:31,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334604217] [2024-06-04 14:49:31,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:31,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:33,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:33,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:33,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334604217] [2024-06-04 14:49:33,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334604217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:33,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:33,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:49:33,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555618927] [2024-06-04 14:49:33,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:33,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:49:33,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:33,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:49:33,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:49:33,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:49:33,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 115 transitions, 887 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:33,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:33,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:49:33,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:33,838 INFO L124 PetriNetUnfolderBase]: 1914/2990 cut-off events. [2024-06-04 14:49:33,838 INFO L125 PetriNetUnfolderBase]: For 78934/78942 co-relation queries the response was YES. [2024-06-04 14:49:33,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17575 conditions, 2990 events. 1914/2990 cut-off events. For 78934/78942 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 15465 event pairs, 608 based on Foata normal form. 10/2990 useless extension candidates. Maximal degree in co-relation 17529. Up to 2725 conditions per place. [2024-06-04 14:49:33,857 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 108 selfloop transitions, 29 changer transitions 0/147 dead transitions. [2024-06-04 14:49:33,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 147 transitions, 1308 flow [2024-06-04 14:49:33,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:49:33,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:49:33,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-04 14:49:33,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45170454545454547 [2024-06-04 14:49:33,859 INFO L175 Difference]: Start difference. First operand has 105 places, 115 transitions, 887 flow. Second operand 8 states and 159 transitions. [2024-06-04 14:49:33,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 147 transitions, 1308 flow [2024-06-04 14:49:33,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 147 transitions, 1268 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-04 14:49:33,920 INFO L231 Difference]: Finished difference. Result has 110 places, 123 transitions, 1015 flow [2024-06-04 14:49:33,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=847, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1015, PETRI_PLACES=110, PETRI_TRANSITIONS=123} [2024-06-04 14:49:33,920 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 65 predicate places. [2024-06-04 14:49:33,920 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 123 transitions, 1015 flow [2024-06-04 14:49:33,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:33,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:33,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:33,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 14:49:33,921 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:33,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:33,921 INFO L85 PathProgramCache]: Analyzing trace with hash -357704889, now seen corresponding path program 3 times [2024-06-04 14:49:33,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:33,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904188364] [2024-06-04 14:49:33,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:33,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:35,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:35,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:35,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904188364] [2024-06-04 14:49:35,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904188364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:35,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:35,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:49:35,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315503093] [2024-06-04 14:49:35,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:35,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:49:35,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:35,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:49:35,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:49:35,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:49:35,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 123 transitions, 1015 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:35,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:35,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:49:35,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:35,806 INFO L124 PetriNetUnfolderBase]: 1931/3017 cut-off events. [2024-06-04 14:49:35,806 INFO L125 PetriNetUnfolderBase]: For 86639/86647 co-relation queries the response was YES. [2024-06-04 14:49:35,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18386 conditions, 3017 events. 1931/3017 cut-off events. For 86639/86647 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 15642 event pairs, 579 based on Foata normal form. 10/3003 useless extension candidates. Maximal degree in co-relation 18338. Up to 2669 conditions per place. [2024-06-04 14:49:35,827 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 108 selfloop transitions, 36 changer transitions 0/154 dead transitions. [2024-06-04 14:49:35,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 154 transitions, 1547 flow [2024-06-04 14:49:35,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:49:35,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:49:35,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-04 14:49:35,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2024-06-04 14:49:35,829 INFO L175 Difference]: Start difference. First operand has 110 places, 123 transitions, 1015 flow. Second operand 8 states and 162 transitions. [2024-06-04 14:49:35,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 154 transitions, 1547 flow [2024-06-04 14:49:35,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 154 transitions, 1480 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-04 14:49:35,872 INFO L231 Difference]: Finished difference. Result has 115 places, 127 transitions, 1115 flow [2024-06-04 14:49:35,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=948, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1115, PETRI_PLACES=115, PETRI_TRANSITIONS=127} [2024-06-04 14:49:35,873 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 70 predicate places. [2024-06-04 14:49:35,873 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 127 transitions, 1115 flow [2024-06-04 14:49:35,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:35,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:35,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:35,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 14:49:35,873 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:35,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:35,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1321375125, now seen corresponding path program 4 times [2024-06-04 14:49:35,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:35,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635974073] [2024-06-04 14:49:35,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:35,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:35,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:37,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:37,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:37,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635974073] [2024-06-04 14:49:37,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635974073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:37,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:37,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:49:37,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307415866] [2024-06-04 14:49:37,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:37,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:49:37,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:37,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:49:37,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:49:37,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:49:37,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 127 transitions, 1115 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:37,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:37,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:49:37,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:37,864 INFO L124 PetriNetUnfolderBase]: 1923/3005 cut-off events. [2024-06-04 14:49:37,864 INFO L125 PetriNetUnfolderBase]: For 91471/91479 co-relation queries the response was YES. [2024-06-04 14:49:37,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18225 conditions, 3005 events. 1923/3005 cut-off events. For 91471/91479 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 15610 event pairs, 618 based on Foata normal form. 10/2991 useless extension candidates. Maximal degree in co-relation 18176. Up to 2740 conditions per place. [2024-06-04 14:49:37,881 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 113 selfloop transitions, 28 changer transitions 0/151 dead transitions. [2024-06-04 14:49:37,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 151 transitions, 1457 flow [2024-06-04 14:49:37,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:49:37,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:49:37,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-04 14:49:37,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:49:37,882 INFO L175 Difference]: Start difference. First operand has 115 places, 127 transitions, 1115 flow. Second operand 8 states and 160 transitions. [2024-06-04 14:49:37,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 151 transitions, 1457 flow [2024-06-04 14:49:37,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 151 transitions, 1359 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-04 14:49:37,943 INFO L231 Difference]: Finished difference. Result has 119 places, 127 transitions, 1080 flow [2024-06-04 14:49:37,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1080, PETRI_PLACES=119, PETRI_TRANSITIONS=127} [2024-06-04 14:49:37,944 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 74 predicate places. [2024-06-04 14:49:37,944 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 127 transitions, 1080 flow [2024-06-04 14:49:37,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:37,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:37,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:37,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 14:49:37,945 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:37,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:37,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1321128861, now seen corresponding path program 5 times [2024-06-04 14:49:37,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:37,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313607701] [2024-06-04 14:49:37,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:37,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:38,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:38,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:38,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313607701] [2024-06-04 14:49:38,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313607701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:38,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:38,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:49:38,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820248186] [2024-06-04 14:49:38,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:38,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:49:38,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:38,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:49:38,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:49:39,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:49:39,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 127 transitions, 1080 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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) [2024-06-04 14:49:39,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:39,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:49:39,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:39,912 INFO L124 PetriNetUnfolderBase]: 2030/3114 cut-off events. [2024-06-04 14:49:39,912 INFO L125 PetriNetUnfolderBase]: For 95355/95361 co-relation queries the response was YES. [2024-06-04 14:49:39,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18756 conditions, 3114 events. 2030/3114 cut-off events. For 95355/95361 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 15631 event pairs, 578 based on Foata normal form. 5/3115 useless extension candidates. Maximal degree in co-relation 18705. Up to 2621 conditions per place. [2024-06-04 14:49:39,931 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 93 selfloop transitions, 60 changer transitions 0/158 dead transitions. [2024-06-04 14:49:39,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 158 transitions, 1470 flow [2024-06-04 14:49:39,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:49:39,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:49:39,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-04 14:49:39,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45202020202020204 [2024-06-04 14:49:39,933 INFO L175 Difference]: Start difference. First operand has 119 places, 127 transitions, 1080 flow. Second operand 9 states and 179 transitions. [2024-06-04 14:49:39,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 158 transitions, 1470 flow [2024-06-04 14:49:39,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 158 transitions, 1353 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-04 14:49:40,000 INFO L231 Difference]: Finished difference. Result has 119 places, 127 transitions, 1091 flow [2024-06-04 14:49:40,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=963, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1091, PETRI_PLACES=119, PETRI_TRANSITIONS=127} [2024-06-04 14:49:40,000 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 74 predicate places. [2024-06-04 14:49:40,000 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 127 transitions, 1091 flow [2024-06-04 14:49:40,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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) [2024-06-04 14:49:40,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:40,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:40,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 14:49:40,001 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:40,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:40,002 INFO L85 PathProgramCache]: Analyzing trace with hash -2037421184, now seen corresponding path program 2 times [2024-06-04 14:49:40,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:40,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146085132] [2024-06-04 14:49:40,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:40,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:40,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:41,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:41,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:41,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146085132] [2024-06-04 14:49:41,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146085132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:41,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:41,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:49:41,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525019429] [2024-06-04 14:49:41,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:41,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:49:41,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:41,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:49:41,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:49:41,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:49:41,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 127 transitions, 1091 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:41,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:41,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:49:41,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:41,537 INFO L124 PetriNetUnfolderBase]: 1764/2821 cut-off events. [2024-06-04 14:49:41,538 INFO L125 PetriNetUnfolderBase]: For 99908/99921 co-relation queries the response was YES. [2024-06-04 14:49:41,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17949 conditions, 2821 events. 1764/2821 cut-off events. For 99908/99921 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 15023 event pairs, 596 based on Foata normal form. 7/2809 useless extension candidates. Maximal degree in co-relation 17899. Up to 2583 conditions per place. [2024-06-04 14:49:41,556 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 107 selfloop transitions, 16 changer transitions 0/139 dead transitions. [2024-06-04 14:49:41,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 139 transitions, 1397 flow [2024-06-04 14:49:41,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:49:41,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:49:41,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-06-04 14:49:41,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:49:41,557 INFO L175 Difference]: Start difference. First operand has 119 places, 127 transitions, 1091 flow. Second operand 6 states and 120 transitions. [2024-06-04 14:49:41,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 139 transitions, 1397 flow [2024-06-04 14:49:41,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 139 transitions, 1198 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 14:49:41,628 INFO L231 Difference]: Finished difference. Result has 115 places, 130 transitions, 974 flow [2024-06-04 14:49:41,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=974, PETRI_PLACES=115, PETRI_TRANSITIONS=130} [2024-06-04 14:49:41,629 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 70 predicate places. [2024-06-04 14:49:41,629 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 130 transitions, 974 flow [2024-06-04 14:49:41,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:41,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:41,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:41,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 14:49:41,630 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:41,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:41,631 INFO L85 PathProgramCache]: Analyzing trace with hash -2043127168, now seen corresponding path program 1 times [2024-06-04 14:49:41,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:41,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457873985] [2024-06-04 14:49:41,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:41,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:42,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:42,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:42,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457873985] [2024-06-04 14:49:42,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457873985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:42,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:42,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:49:42,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850129158] [2024-06-04 14:49:42,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:42,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:49:42,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:42,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:49:42,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:49:42,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:49:42,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 130 transitions, 974 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:42,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:42,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:49:42,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:42,972 INFO L124 PetriNetUnfolderBase]: 1691/2746 cut-off events. [2024-06-04 14:49:42,972 INFO L125 PetriNetUnfolderBase]: For 89534/89534 co-relation queries the response was YES. [2024-06-04 14:49:42,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16628 conditions, 2746 events. 1691/2746 cut-off events. For 89534/89534 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 14708 event pairs, 504 based on Foata normal form. 2/2739 useless extension candidates. Maximal degree in co-relation 16577. Up to 2487 conditions per place. [2024-06-04 14:49:42,989 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 124 selfloop transitions, 11 changer transitions 0/146 dead transitions. [2024-06-04 14:49:42,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 146 transitions, 1312 flow [2024-06-04 14:49:42,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:49:42,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:49:42,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-04 14:49:42,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-06-04 14:49:42,991 INFO L175 Difference]: Start difference. First operand has 115 places, 130 transitions, 974 flow. Second operand 6 states and 122 transitions. [2024-06-04 14:49:42,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 146 transitions, 1312 flow [2024-06-04 14:49:43,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 146 transitions, 1252 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-04 14:49:43,108 INFO L231 Difference]: Finished difference. Result has 117 places, 133 transitions, 982 flow [2024-06-04 14:49:43,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=982, PETRI_PLACES=117, PETRI_TRANSITIONS=133} [2024-06-04 14:49:43,108 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 72 predicate places. [2024-06-04 14:49:43,108 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 133 transitions, 982 flow [2024-06-04 14:49:43,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:43,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:43,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:43,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 14:49:43,109 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:43,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:43,109 INFO L85 PathProgramCache]: Analyzing trace with hash -2037413248, now seen corresponding path program 2 times [2024-06-04 14:49:43,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:43,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563287477] [2024-06-04 14:49:43,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:43,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:43,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:43,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:43,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563287477] [2024-06-04 14:49:43,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563287477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:43,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:43,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:49:43,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059035983] [2024-06-04 14:49:43,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:43,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:49:43,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:43,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:49:43,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:49:43,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:49:43,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 133 transitions, 982 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:43,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:43,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:49:43,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:44,425 INFO L124 PetriNetUnfolderBase]: 1693/2752 cut-off events. [2024-06-04 14:49:44,425 INFO L125 PetriNetUnfolderBase]: For 94581/94583 co-relation queries the response was YES. [2024-06-04 14:49:44,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17077 conditions, 2752 events. 1693/2752 cut-off events. For 94581/94583 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 14762 event pairs, 508 based on Foata normal form. 4/2747 useless extension candidates. Maximal degree in co-relation 17025. Up to 2481 conditions per place. [2024-06-04 14:49:44,441 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 120 selfloop transitions, 16 changer transitions 0/147 dead transitions. [2024-06-04 14:49:44,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 147 transitions, 1324 flow [2024-06-04 14:49:44,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:49:44,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:49:44,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-04 14:49:44,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-06-04 14:49:44,442 INFO L175 Difference]: Start difference. First operand has 117 places, 133 transitions, 982 flow. Second operand 6 states and 122 transitions. [2024-06-04 14:49:44,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 147 transitions, 1324 flow [2024-06-04 14:49:44,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 147 transitions, 1278 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-04 14:49:44,517 INFO L231 Difference]: Finished difference. Result has 119 places, 136 transitions, 1020 flow [2024-06-04 14:49:44,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=936, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1020, PETRI_PLACES=119, PETRI_TRANSITIONS=136} [2024-06-04 14:49:44,518 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 74 predicate places. [2024-06-04 14:49:44,518 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 136 transitions, 1020 flow [2024-06-04 14:49:44,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:44,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:44,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:44,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 14:49:44,518 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:44,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:44,518 INFO L85 PathProgramCache]: Analyzing trace with hash 19521667, now seen corresponding path program 1 times [2024-06-04 14:49:44,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:44,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857710389] [2024-06-04 14:49:44,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:44,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:45,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:45,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:45,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857710389] [2024-06-04 14:49:45,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857710389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:45,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:45,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:49:45,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701540368] [2024-06-04 14:49:45,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:45,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:49:45,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:45,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:49:45,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:49:45,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:49:45,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 136 transitions, 1020 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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) [2024-06-04 14:49:45,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:45,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:49:45,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:46,705 INFO L124 PetriNetUnfolderBase]: 2056/3155 cut-off events. [2024-06-04 14:49:46,706 INFO L125 PetriNetUnfolderBase]: For 120271/120273 co-relation queries the response was YES. [2024-06-04 14:49:46,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20403 conditions, 3155 events. 2056/3155 cut-off events. For 120271/120273 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 15840 event pairs, 579 based on Foata normal form. 4/3156 useless extension candidates. Maximal degree in co-relation 20350. Up to 2870 conditions per place. [2024-06-04 14:49:46,732 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 130 selfloop transitions, 41 changer transitions 0/176 dead transitions. [2024-06-04 14:49:46,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 176 transitions, 1508 flow [2024-06-04 14:49:46,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:49:46,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:49:46,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-04 14:49:46,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494949494949495 [2024-06-04 14:49:46,734 INFO L175 Difference]: Start difference. First operand has 119 places, 136 transitions, 1020 flow. Second operand 9 states and 178 transitions. [2024-06-04 14:49:46,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 176 transitions, 1508 flow [2024-06-04 14:49:46,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 176 transitions, 1446 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-04 14:49:46,794 INFO L231 Difference]: Finished difference. Result has 125 places, 141 transitions, 1113 flow [2024-06-04 14:49:46,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1113, PETRI_PLACES=125, PETRI_TRANSITIONS=141} [2024-06-04 14:49:46,795 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 80 predicate places. [2024-06-04 14:49:46,795 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 141 transitions, 1113 flow [2024-06-04 14:49:46,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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) [2024-06-04 14:49:46,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:46,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:46,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-04 14:49:46,796 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:46,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:46,796 INFO L85 PathProgramCache]: Analyzing trace with hash 850788956, now seen corresponding path program 1 times [2024-06-04 14:49:46,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:46,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734259003] [2024-06-04 14:49:46,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:46,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:47,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:47,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:47,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734259003] [2024-06-04 14:49:47,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734259003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:47,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:47,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:49:47,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088663418] [2024-06-04 14:49:47,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:47,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:49:47,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:47,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:49:47,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:49:47,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:49:47,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 141 transitions, 1113 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:47,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:47,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:49:47,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:48,516 INFO L124 PetriNetUnfolderBase]: 1915/3001 cut-off events. [2024-06-04 14:49:48,516 INFO L125 PetriNetUnfolderBase]: For 126482/126482 co-relation queries the response was YES. [2024-06-04 14:49:48,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20584 conditions, 3001 events. 1915/3001 cut-off events. For 126482/126482 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 15506 event pairs, 567 based on Foata normal form. 1/2986 useless extension candidates. Maximal degree in co-relation 20529. Up to 2813 conditions per place. [2024-06-04 14:49:48,536 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 141 selfloop transitions, 14 changer transitions 0/166 dead transitions. [2024-06-04 14:49:48,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 166 transitions, 1519 flow [2024-06-04 14:49:48,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:49:48,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:49:48,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-04 14:49:48,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:49:48,537 INFO L175 Difference]: Start difference. First operand has 125 places, 141 transitions, 1113 flow. Second operand 7 states and 140 transitions. [2024-06-04 14:49:48,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 166 transitions, 1519 flow [2024-06-04 14:49:48,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 166 transitions, 1406 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-04 14:49:48,614 INFO L231 Difference]: Finished difference. Result has 126 places, 144 transitions, 1080 flow [2024-06-04 14:49:48,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1080, PETRI_PLACES=126, PETRI_TRANSITIONS=144} [2024-06-04 14:49:48,614 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 81 predicate places. [2024-06-04 14:49:48,615 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 144 transitions, 1080 flow [2024-06-04 14:49:48,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:48,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:48,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:48,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-04 14:49:48,615 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:48,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:48,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1563936979, now seen corresponding path program 2 times [2024-06-04 14:49:48,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:48,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116268993] [2024-06-04 14:49:48,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:48,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:49,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:49,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:49,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116268993] [2024-06-04 14:49:49,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116268993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:49,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:49,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:49:49,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477815789] [2024-06-04 14:49:49,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:49,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:49:49,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:49,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:49:49,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:49:49,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:49:49,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 144 transitions, 1080 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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) [2024-06-04 14:49:49,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:49,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:49:49,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:50,744 INFO L124 PetriNetUnfolderBase]: 2089/3210 cut-off events. [2024-06-04 14:49:50,744 INFO L125 PetriNetUnfolderBase]: For 135694/135696 co-relation queries the response was YES. [2024-06-04 14:49:50,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21709 conditions, 3210 events. 2089/3210 cut-off events. For 135694/135696 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 16228 event pairs, 585 based on Foata normal form. 4/3211 useless extension candidates. Maximal degree in co-relation 21653. Up to 2916 conditions per place. [2024-06-04 14:49:50,766 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 135 selfloop transitions, 44 changer transitions 0/184 dead transitions. [2024-06-04 14:49:50,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 184 transitions, 1607 flow [2024-06-04 14:49:50,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:49:50,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:49:50,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-04 14:49:50,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-04 14:49:50,768 INFO L175 Difference]: Start difference. First operand has 126 places, 144 transitions, 1080 flow. Second operand 9 states and 176 transitions. [2024-06-04 14:49:50,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 184 transitions, 1607 flow [2024-06-04 14:49:50,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 184 transitions, 1549 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-04 14:49:50,848 INFO L231 Difference]: Finished difference. Result has 131 places, 152 transitions, 1218 flow [2024-06-04 14:49:50,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1218, PETRI_PLACES=131, PETRI_TRANSITIONS=152} [2024-06-04 14:49:50,849 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 86 predicate places. [2024-06-04 14:49:50,849 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 152 transitions, 1218 flow [2024-06-04 14:49:50,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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) [2024-06-04 14:49:50,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:50,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:50,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-04 14:49:50,850 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:50,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:50,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1564205749, now seen corresponding path program 3 times [2024-06-04 14:49:50,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:50,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537963016] [2024-06-04 14:49:50,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:50,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:52,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:52,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:52,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537963016] [2024-06-04 14:49:52,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537963016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:52,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:52,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:49:52,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143194198] [2024-06-04 14:49:52,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:52,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:49:52,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:52,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:49:52,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:49:52,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:49:52,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 152 transitions, 1218 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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) [2024-06-04 14:49:52,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:52,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:49:52,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:52,949 INFO L124 PetriNetUnfolderBase]: 2131/3281 cut-off events. [2024-06-04 14:49:52,949 INFO L125 PetriNetUnfolderBase]: For 148013/148015 co-relation queries the response was YES. [2024-06-04 14:49:52,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22978 conditions, 3281 events. 2131/3281 cut-off events. For 148013/148015 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 16674 event pairs, 583 based on Foata normal form. 4/3282 useless extension candidates. Maximal degree in co-relation 22920. Up to 2899 conditions per place. [2024-06-04 14:49:52,976 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 135 selfloop transitions, 51 changer transitions 0/191 dead transitions. [2024-06-04 14:49:52,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 191 transitions, 1900 flow [2024-06-04 14:49:52,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:49:52,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:49:52,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-04 14:49:52,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45202020202020204 [2024-06-04 14:49:52,978 INFO L175 Difference]: Start difference. First operand has 131 places, 152 transitions, 1218 flow. Second operand 9 states and 179 transitions. [2024-06-04 14:49:52,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 191 transitions, 1900 flow [2024-06-04 14:49:53,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 191 transitions, 1797 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-04 14:49:53,062 INFO L231 Difference]: Finished difference. Result has 136 places, 156 transitions, 1326 flow [2024-06-04 14:49:53,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1117, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1326, PETRI_PLACES=136, PETRI_TRANSITIONS=156} [2024-06-04 14:49:53,062 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 91 predicate places. [2024-06-04 14:49:53,062 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 156 transitions, 1326 flow [2024-06-04 14:49:53,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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) [2024-06-04 14:49:53,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:53,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:53,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-04 14:49:53,063 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:53,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:53,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1556787139, now seen corresponding path program 4 times [2024-06-04 14:49:53,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:53,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626835057] [2024-06-04 14:49:53,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:53,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:54,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:54,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:54,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626835057] [2024-06-04 14:49:54,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626835057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:54,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:54,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:49:54,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457467331] [2024-06-04 14:49:54,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:54,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:49:54,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:54,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:49:54,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:49:54,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:49:54,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 156 transitions, 1326 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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) [2024-06-04 14:49:54,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:54,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:49:54,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:55,293 INFO L124 PetriNetUnfolderBase]: 2123/3269 cut-off events. [2024-06-04 14:49:55,293 INFO L125 PetriNetUnfolderBase]: For 153864/153866 co-relation queries the response was YES. [2024-06-04 14:49:55,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22962 conditions, 3269 events. 2123/3269 cut-off events. For 153864/153866 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 16587 event pairs, 590 based on Foata normal form. 4/3270 useless extension candidates. Maximal degree in co-relation 22903. Up to 2970 conditions per place. [2024-06-04 14:49:55,316 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 140 selfloop transitions, 43 changer transitions 0/188 dead transitions. [2024-06-04 14:49:55,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 188 transitions, 1776 flow [2024-06-04 14:49:55,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:49:55,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:49:55,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-04 14:49:55,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44696969696969696 [2024-06-04 14:49:55,318 INFO L175 Difference]: Start difference. First operand has 136 places, 156 transitions, 1326 flow. Second operand 9 states and 177 transitions. [2024-06-04 14:49:55,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 188 transitions, 1776 flow [2024-06-04 14:49:55,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 188 transitions, 1650 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-04 14:49:55,413 INFO L231 Difference]: Finished difference. Result has 140 places, 156 transitions, 1293 flow [2024-06-04 14:49:55,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1200, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1293, PETRI_PLACES=140, PETRI_TRANSITIONS=156} [2024-06-04 14:49:55,413 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 95 predicate places. [2024-06-04 14:49:55,414 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 156 transitions, 1293 flow [2024-06-04 14:49:55,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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) [2024-06-04 14:49:55,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:55,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:55,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-04 14:49:55,414 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:55,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:55,415 INFO L85 PathProgramCache]: Analyzing trace with hash 851147440, now seen corresponding path program 1 times [2024-06-04 14:49:55,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:55,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369377665] [2024-06-04 14:49:55,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:55,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:55,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:56,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:56,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:56,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369377665] [2024-06-04 14:49:56,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369377665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:56,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:56,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:49:56,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751166150] [2024-06-04 14:49:56,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:56,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:49:56,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:56,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:49:56,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:49:56,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:49:56,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 156 transitions, 1293 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:56,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:56,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:49:56,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:57,273 INFO L124 PetriNetUnfolderBase]: 1881/3014 cut-off events. [2024-06-04 14:49:57,274 INFO L125 PetriNetUnfolderBase]: For 157967/157967 co-relation queries the response was YES. [2024-06-04 14:49:57,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21958 conditions, 3014 events. 1881/3014 cut-off events. For 157967/157967 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 16188 event pairs, 576 based on Foata normal form. 1/3006 useless extension candidates. Maximal degree in co-relation 21897. Up to 2704 conditions per place. [2024-06-04 14:49:57,296 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 137 selfloop transitions, 14 changer transitions 0/175 dead transitions. [2024-06-04 14:49:57,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 175 transitions, 1675 flow [2024-06-04 14:49:57,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:49:57,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:49:57,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-04 14:49:57,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:49:57,298 INFO L175 Difference]: Start difference. First operand has 140 places, 156 transitions, 1293 flow. Second operand 7 states and 140 transitions. [2024-06-04 14:49:57,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 175 transitions, 1675 flow [2024-06-04 14:49:57,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 175 transitions, 1550 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-04 14:49:57,395 INFO L231 Difference]: Finished difference. Result has 138 places, 159 transitions, 1248 flow [2024-06-04 14:49:57,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1168, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1248, PETRI_PLACES=138, PETRI_TRANSITIONS=159} [2024-06-04 14:49:57,395 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 93 predicate places. [2024-06-04 14:49:57,396 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 159 transitions, 1248 flow [2024-06-04 14:49:57,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:57,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:57,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:57,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-04 14:49:57,396 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:57,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:57,397 INFO L85 PathProgramCache]: Analyzing trace with hash 851147006, now seen corresponding path program 2 times [2024-06-04 14:49:57,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:57,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159469925] [2024-06-04 14:49:57,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:57,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:58,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:58,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:58,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159469925] [2024-06-04 14:49:58,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159469925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:58,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:58,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:49:58,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84002060] [2024-06-04 14:49:58,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:58,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:49:58,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:58,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:49:58,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:49:58,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:49:58,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 159 transitions, 1248 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:58,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:58,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:49:58,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:58,979 INFO L124 PetriNetUnfolderBase]: 1987/3122 cut-off events. [2024-06-04 14:49:58,979 INFO L125 PetriNetUnfolderBase]: For 166532/166532 co-relation queries the response was YES. [2024-06-04 14:49:58,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23026 conditions, 3122 events. 1987/3122 cut-off events. For 166532/166532 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 16315 event pairs, 576 based on Foata normal form. 1/3114 useless extension candidates. Maximal degree in co-relation 22965. Up to 2918 conditions per place. [2024-06-04 14:49:59,004 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 148 selfloop transitions, 19 changer transitions 0/178 dead transitions. [2024-06-04 14:49:59,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 178 transitions, 1674 flow [2024-06-04 14:49:59,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:49:59,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:49:59,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-04 14:49:59,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-06-04 14:49:59,005 INFO L175 Difference]: Start difference. First operand has 138 places, 159 transitions, 1248 flow. Second operand 7 states and 136 transitions. [2024-06-04 14:49:59,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 178 transitions, 1674 flow [2024-06-04 14:49:59,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 178 transitions, 1616 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-04 14:49:59,102 INFO L231 Difference]: Finished difference. Result has 140 places, 162 transitions, 1292 flow [2024-06-04 14:49:59,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1190, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1292, PETRI_PLACES=140, PETRI_TRANSITIONS=162} [2024-06-04 14:49:59,102 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 95 predicate places. [2024-06-04 14:49:59,102 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 162 transitions, 1292 flow [2024-06-04 14:49:59,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:59,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:59,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:59,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-04 14:49:59,103 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:59,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:59,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1425182027, now seen corresponding path program 5 times [2024-06-04 14:49:59,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:59,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963740921] [2024-06-04 14:49:59,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:59,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:00,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:00,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:00,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963740921] [2024-06-04 14:50:00,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963740921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:00,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:00,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:50:00,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279645299] [2024-06-04 14:50:00,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:00,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:50:00,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:00,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:50:00,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:50:00,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:50:00,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 162 transitions, 1292 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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) [2024-06-04 14:50:00,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:00,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:50:00,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:01,173 INFO L124 PetriNetUnfolderBase]: 2186/3363 cut-off events. [2024-06-04 14:50:01,173 INFO L125 PetriNetUnfolderBase]: For 181117/181125 co-relation queries the response was YES. [2024-06-04 14:50:01,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24786 conditions, 3363 events. 2186/3363 cut-off events. For 181117/181125 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 17098 event pairs, 597 based on Foata normal form. 7/3367 useless extension candidates. Maximal degree in co-relation 24724. Up to 3015 conditions per place. [2024-06-04 14:50:01,201 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 144 selfloop transitions, 54 changer transitions 0/203 dead transitions. [2024-06-04 14:50:01,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 203 transitions, 2052 flow [2024-06-04 14:50:01,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:50:01,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:50:01,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-04 14:50:01,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-04 14:50:01,202 INFO L175 Difference]: Start difference. First operand has 140 places, 162 transitions, 1292 flow. Second operand 9 states and 176 transitions. [2024-06-04 14:50:01,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 203 transitions, 2052 flow [2024-06-04 14:50:01,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 203 transitions, 1972 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-04 14:50:01,315 INFO L231 Difference]: Finished difference. Result has 145 places, 172 transitions, 1505 flow [2024-06-04 14:50:01,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1212, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1505, PETRI_PLACES=145, PETRI_TRANSITIONS=172} [2024-06-04 14:50:01,315 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 100 predicate places. [2024-06-04 14:50:01,316 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 172 transitions, 1505 flow [2024-06-04 14:50:01,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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) [2024-06-04 14:50:01,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:01,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:01,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-04 14:50:01,316 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:01,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:01,317 INFO L85 PathProgramCache]: Analyzing trace with hash -53691753, now seen corresponding path program 6 times [2024-06-04 14:50:01,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:01,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128804561] [2024-06-04 14:50:01,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:01,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:02,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:02,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:02,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128804561] [2024-06-04 14:50:02,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128804561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:02,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:02,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:50:02,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638072094] [2024-06-04 14:50:02,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:02,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:50:02,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:02,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:50:02,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:50:02,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:50:02,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 172 transitions, 1505 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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) [2024-06-04 14:50:02,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:02,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:50:02,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:03,641 INFO L124 PetriNetUnfolderBase]: 2178/3362 cut-off events. [2024-06-04 14:50:03,641 INFO L125 PetriNetUnfolderBase]: For 189130/189132 co-relation queries the response was YES. [2024-06-04 14:50:03,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25334 conditions, 3362 events. 2178/3362 cut-off events. For 189130/189132 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 17178 event pairs, 588 based on Foata normal form. 6/3364 useless extension candidates. Maximal degree in co-relation 25270. Up to 3050 conditions per place. [2024-06-04 14:50:03,666 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 145 selfloop transitions, 53 changer transitions 0/203 dead transitions. [2024-06-04 14:50:03,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 203 transitions, 1995 flow [2024-06-04 14:50:03,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:50:03,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:50:03,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-04 14:50:03,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-04 14:50:03,668 INFO L175 Difference]: Start difference. First operand has 145 places, 172 transitions, 1505 flow. Second operand 10 states and 185 transitions. [2024-06-04 14:50:03,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 203 transitions, 1995 flow [2024-06-04 14:50:03,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 203 transitions, 1884 flow, removed 50 selfloop flow, removed 2 redundant places. [2024-06-04 14:50:03,794 INFO L231 Difference]: Finished difference. Result has 154 places, 174 transitions, 1524 flow [2024-06-04 14:50:03,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1395, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1524, PETRI_PLACES=154, PETRI_TRANSITIONS=174} [2024-06-04 14:50:03,795 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 109 predicate places. [2024-06-04 14:50:03,795 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 174 transitions, 1524 flow [2024-06-04 14:50:03,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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) [2024-06-04 14:50:03,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:03,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:03,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-04 14:50:03,796 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:03,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:03,796 INFO L85 PathProgramCache]: Analyzing trace with hash -310192263, now seen corresponding path program 7 times [2024-06-04 14:50:03,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:03,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348913865] [2024-06-04 14:50:03,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:03,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:04,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:04,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:04,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348913865] [2024-06-04 14:50:04,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348913865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:04,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:04,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:50:04,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457664815] [2024-06-04 14:50:04,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:04,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:50:04,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:04,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:50:04,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:50:05,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:50:05,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 174 transitions, 1524 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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) [2024-06-04 14:50:05,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:05,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:50:05,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:05,878 INFO L124 PetriNetUnfolderBase]: 2206/3399 cut-off events. [2024-06-04 14:50:05,878 INFO L125 PetriNetUnfolderBase]: For 196877/196885 co-relation queries the response was YES. [2024-06-04 14:50:05,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25466 conditions, 3399 events. 2206/3399 cut-off events. For 196877/196885 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 17382 event pairs, 595 based on Foata normal form. 7/3403 useless extension candidates. Maximal degree in co-relation 25399. Up to 3089 conditions per place. [2024-06-04 14:50:05,907 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 148 selfloop transitions, 53 changer transitions 0/206 dead transitions. [2024-06-04 14:50:05,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 206 transitions, 2088 flow [2024-06-04 14:50:05,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:50:05,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:50:05,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-04 14:50:05,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43686868686868685 [2024-06-04 14:50:05,909 INFO L175 Difference]: Start difference. First operand has 154 places, 174 transitions, 1524 flow. Second operand 9 states and 173 transitions. [2024-06-04 14:50:05,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 206 transitions, 2088 flow [2024-06-04 14:50:06,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 206 transitions, 1978 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-04 14:50:06,050 INFO L231 Difference]: Finished difference. Result has 156 places, 179 transitions, 1625 flow [2024-06-04 14:50:06,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1625, PETRI_PLACES=156, PETRI_TRANSITIONS=179} [2024-06-04 14:50:06,051 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 111 predicate places. [2024-06-04 14:50:06,051 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 179 transitions, 1625 flow [2024-06-04 14:50:06,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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) [2024-06-04 14:50:06,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:06,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:06,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-04 14:50:06,052 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:06,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:06,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1987311405, now seen corresponding path program 8 times [2024-06-04 14:50:06,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:06,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606798422] [2024-06-04 14:50:06,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:06,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:07,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:07,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:07,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606798422] [2024-06-04 14:50:07,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606798422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:07,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:07,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:50:07,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885525222] [2024-06-04 14:50:07,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:07,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:50:07,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:07,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:50:07,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:50:07,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:50:07,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 179 transitions, 1625 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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) [2024-06-04 14:50:07,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:07,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:50:07,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:08,431 INFO L124 PetriNetUnfolderBase]: 2223/3431 cut-off events. [2024-06-04 14:50:08,431 INFO L125 PetriNetUnfolderBase]: For 208053/208061 co-relation queries the response was YES. [2024-06-04 14:50:08,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26070 conditions, 3431 events. 2223/3431 cut-off events. For 208053/208061 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 17614 event pairs, 605 based on Foata normal form. 7/3435 useless extension candidates. Maximal degree in co-relation 26001. Up to 3116 conditions per place. [2024-06-04 14:50:08,457 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 151 selfloop transitions, 52 changer transitions 0/208 dead transitions. [2024-06-04 14:50:08,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 208 transitions, 2161 flow [2024-06-04 14:50:08,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:50:08,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:50:08,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-04 14:50:08,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-04 14:50:08,458 INFO L175 Difference]: Start difference. First operand has 156 places, 179 transitions, 1625 flow. Second operand 9 states and 174 transitions. [2024-06-04 14:50:08,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 208 transitions, 2161 flow [2024-06-04 14:50:08,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 208 transitions, 1982 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-04 14:50:08,629 INFO L231 Difference]: Finished difference. Result has 157 places, 181 transitions, 1623 flow [2024-06-04 14:50:08,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1623, PETRI_PLACES=157, PETRI_TRANSITIONS=181} [2024-06-04 14:50:08,630 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 112 predicate places. [2024-06-04 14:50:08,630 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 181 transitions, 1623 flow [2024-06-04 14:50:08,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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) [2024-06-04 14:50:08,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:08,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:08,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-04 14:50:08,633 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:08,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:08,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1783197963, now seen corresponding path program 9 times [2024-06-04 14:50:08,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:08,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718174040] [2024-06-04 14:50:08,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:08,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:09,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:09,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:09,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718174040] [2024-06-04 14:50:09,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718174040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:09,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:09,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:50:09,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083520642] [2024-06-04 14:50:09,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:09,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:50:09,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:09,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:50:09,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:50:09,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:50:09,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 181 transitions, 1623 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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) [2024-06-04 14:50:09,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:09,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:50:09,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:10,703 INFO L124 PetriNetUnfolderBase]: 2240/3463 cut-off events. [2024-06-04 14:50:10,703 INFO L125 PetriNetUnfolderBase]: For 218662/218670 co-relation queries the response was YES. [2024-06-04 14:50:10,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26485 conditions, 3463 events. 2240/3463 cut-off events. For 218662/218670 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 17855 event pairs, 610 based on Foata normal form. 7/3467 useless extension candidates. Maximal degree in co-relation 26417. Up to 3084 conditions per place. [2024-06-04 14:50:10,729 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 149 selfloop transitions, 57 changer transitions 0/211 dead transitions. [2024-06-04 14:50:10,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 211 transitions, 2171 flow [2024-06-04 14:50:10,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:50:10,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:50:10,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-04 14:50:10,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44191919191919193 [2024-06-04 14:50:10,731 INFO L175 Difference]: Start difference. First operand has 157 places, 181 transitions, 1623 flow. Second operand 9 states and 175 transitions. [2024-06-04 14:50:10,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 211 transitions, 2171 flow [2024-06-04 14:50:10,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 211 transitions, 2000 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-04 14:50:10,857 INFO L231 Difference]: Finished difference. Result has 160 places, 183 transitions, 1643 flow [2024-06-04 14:50:10,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1452, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1643, PETRI_PLACES=160, PETRI_TRANSITIONS=183} [2024-06-04 14:50:10,858 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 115 predicate places. [2024-06-04 14:50:10,858 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 183 transitions, 1643 flow [2024-06-04 14:50:10,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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) [2024-06-04 14:50:10,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:10,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:10,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-04 14:50:10,859 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:10,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:10,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1414140137, now seen corresponding path program 10 times [2024-06-04 14:50:10,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:10,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601645648] [2024-06-04 14:50:10,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:10,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:10,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:12,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:12,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:12,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601645648] [2024-06-04 14:50:12,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601645648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:12,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:12,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:50:12,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139763384] [2024-06-04 14:50:12,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:12,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:50:12,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:12,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:50:12,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:50:12,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:50:12,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 183 transitions, 1643 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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) [2024-06-04 14:50:12,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:12,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:50:12,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:12,903 INFO L124 PetriNetUnfolderBase]: 2232/3446 cut-off events. [2024-06-04 14:50:12,904 INFO L125 PetriNetUnfolderBase]: For 225160/225168 co-relation queries the response was YES. [2024-06-04 14:50:12,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26464 conditions, 3446 events. 2232/3446 cut-off events. For 225160/225168 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 17725 event pairs, 544 based on Foata normal form. 7/3450 useless extension candidates. Maximal degree in co-relation 26395. Up to 2854 conditions per place. [2024-06-04 14:50:12,930 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 131 selfloop transitions, 78 changer transitions 0/214 dead transitions. [2024-06-04 14:50:12,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 214 transitions, 2203 flow [2024-06-04 14:50:12,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:50:12,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:50:12,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-04 14:50:12,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-04 14:50:12,931 INFO L175 Difference]: Start difference. First operand has 160 places, 183 transitions, 1643 flow. Second operand 9 states and 174 transitions. [2024-06-04 14:50:12,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 214 transitions, 2203 flow [2024-06-04 14:50:13,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 214 transitions, 2030 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-04 14:50:13,095 INFO L231 Difference]: Finished difference. Result has 162 places, 185 transitions, 1707 flow [2024-06-04 14:50:13,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1470, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1707, PETRI_PLACES=162, PETRI_TRANSITIONS=185} [2024-06-04 14:50:13,096 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 117 predicate places. [2024-06-04 14:50:13,096 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 185 transitions, 1707 flow [2024-06-04 14:50:13,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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) [2024-06-04 14:50:13,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:13,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:13,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-04 14:50:13,097 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:13,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:13,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1258521810, now seen corresponding path program 2 times [2024-06-04 14:50:13,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:13,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462506472] [2024-06-04 14:50:13,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:13,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:14,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:14,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:14,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462506472] [2024-06-04 14:50:14,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462506472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:14,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:14,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:50:14,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156098249] [2024-06-04 14:50:14,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:14,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:50:14,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:14,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:50:14,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:50:14,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:50:14,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 185 transitions, 1707 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:14,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:14,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:50:14,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:14,884 INFO L124 PetriNetUnfolderBase]: 1981/3181 cut-off events. [2024-06-04 14:50:14,884 INFO L125 PetriNetUnfolderBase]: For 228862/228870 co-relation queries the response was YES. [2024-06-04 14:50:14,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25250 conditions, 3181 events. 1981/3181 cut-off events. For 228862/228870 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 17234 event pairs, 591 based on Foata normal form. 7/3178 useless extension candidates. Maximal degree in co-relation 25180. Up to 2805 conditions per place. [2024-06-04 14:50:14,910 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 143 selfloop transitions, 26 changer transitions 0/204 dead transitions. [2024-06-04 14:50:14,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 204 transitions, 2266 flow [2024-06-04 14:50:14,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:50:14,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:50:14,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-04 14:50:14,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44805194805194803 [2024-06-04 14:50:14,911 INFO L175 Difference]: Start difference. First operand has 162 places, 185 transitions, 1707 flow. Second operand 7 states and 138 transitions. [2024-06-04 14:50:14,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 204 transitions, 2266 flow [2024-06-04 14:50:15,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 204 transitions, 2047 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-04 14:50:15,028 INFO L231 Difference]: Finished difference. Result has 163 places, 193 transitions, 1671 flow [2024-06-04 14:50:15,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1488, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1671, PETRI_PLACES=163, PETRI_TRANSITIONS=193} [2024-06-04 14:50:15,029 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 118 predicate places. [2024-06-04 14:50:15,029 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 193 transitions, 1671 flow [2024-06-04 14:50:15,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:15,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:15,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:15,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-04 14:50:15,030 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:15,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:15,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1264453886, now seen corresponding path program 3 times [2024-06-04 14:50:15,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:15,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096283852] [2024-06-04 14:50:15,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:15,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:15,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:15,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:15,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096283852] [2024-06-04 14:50:15,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096283852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:15,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:15,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:50:15,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386921521] [2024-06-04 14:50:15,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:15,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:50:15,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:15,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:50:15,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:50:16,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:50:16,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 193 transitions, 1671 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:16,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:16,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:50:16,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:16,600 INFO L124 PetriNetUnfolderBase]: 2088/3283 cut-off events. [2024-06-04 14:50:16,600 INFO L125 PetriNetUnfolderBase]: For 240625/240633 co-relation queries the response was YES. [2024-06-04 14:50:16,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26284 conditions, 3283 events. 2088/3283 cut-off events. For 240625/240633 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 17247 event pairs, 598 based on Foata normal form. 4/3270 useless extension candidates. Maximal degree in co-relation 26212. Up to 3067 conditions per place. [2024-06-04 14:50:16,627 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 167 selfloop transitions, 27 changer transitions 0/205 dead transitions. [2024-06-04 14:50:16,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 205 transitions, 2151 flow [2024-06-04 14:50:16,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:50:16,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:50:16,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-04 14:50:16,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-04 14:50:16,628 INFO L175 Difference]: Start difference. First operand has 163 places, 193 transitions, 1671 flow. Second operand 7 states and 132 transitions. [2024-06-04 14:50:16,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 205 transitions, 2151 flow [2024-06-04 14:50:16,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 205 transitions, 2087 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-04 14:50:16,781 INFO L231 Difference]: Finished difference. Result has 167 places, 196 transitions, 1743 flow [2024-06-04 14:50:16,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1607, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1743, PETRI_PLACES=167, PETRI_TRANSITIONS=196} [2024-06-04 14:50:16,782 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 122 predicate places. [2024-06-04 14:50:16,782 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 196 transitions, 1743 flow [2024-06-04 14:50:16,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:16,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:16,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:16,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-04 14:50:16,782 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:16,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:16,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1258507860, now seen corresponding path program 3 times [2024-06-04 14:50:16,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:16,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766076848] [2024-06-04 14:50:16,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:16,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:17,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:17,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:17,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766076848] [2024-06-04 14:50:17,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766076848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:17,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:17,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:50:17,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133272818] [2024-06-04 14:50:17,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:17,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:50:17,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:17,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:50:17,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:50:18,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:50:18,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 196 transitions, 1743 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:18,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:18,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:50:18,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:18,595 INFO L124 PetriNetUnfolderBase]: 1979/3172 cut-off events. [2024-06-04 14:50:18,595 INFO L125 PetriNetUnfolderBase]: For 245413/245421 co-relation queries the response was YES. [2024-06-04 14:50:18,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25631 conditions, 3172 events. 1979/3172 cut-off events. For 245413/245421 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 17109 event pairs, 591 based on Foata normal form. 7/3162 useless extension candidates. Maximal degree in co-relation 25557. Up to 2812 conditions per place. [2024-06-04 14:50:18,624 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 152 selfloop transitions, 19 changer transitions 0/207 dead transitions. [2024-06-04 14:50:18,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 207 transitions, 2119 flow [2024-06-04 14:50:18,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:50:18,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:50:18,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-04 14:50:18,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-06-04 14:50:18,625 INFO L175 Difference]: Start difference. First operand has 167 places, 196 transitions, 1743 flow. Second operand 7 states and 136 transitions. [2024-06-04 14:50:18,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 207 transitions, 2119 flow [2024-06-04 14:50:18,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 207 transitions, 1975 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-04 14:50:18,845 INFO L231 Difference]: Finished difference. Result has 169 places, 197 transitions, 1652 flow [2024-06-04 14:50:18,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1599, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1652, PETRI_PLACES=169, PETRI_TRANSITIONS=197} [2024-06-04 14:50:18,845 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 124 predicate places. [2024-06-04 14:50:18,845 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 197 transitions, 1652 flow [2024-06-04 14:50:18,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:18,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:18,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:18,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-04 14:50:18,846 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:18,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:18,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1087448660, now seen corresponding path program 1 times [2024-06-04 14:50:18,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:18,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794515393] [2024-06-04 14:50:18,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:18,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:19,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:19,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:19,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794515393] [2024-06-04 14:50:19,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794515393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:19,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:19,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:50:19,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103824081] [2024-06-04 14:50:19,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:19,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:50:19,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:19,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:50:19,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:50:19,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:50:19,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 197 transitions, 1652 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:19,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:19,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:50:19,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:20,621 INFO L124 PetriNetUnfolderBase]: 1991/3201 cut-off events. [2024-06-04 14:50:20,622 INFO L125 PetriNetUnfolderBase]: For 252830/252830 co-relation queries the response was YES. [2024-06-04 14:50:20,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25583 conditions, 3201 events. 1991/3201 cut-off events. For 252830/252830 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 17277 event pairs, 533 based on Foata normal form. 1/3200 useless extension candidates. Maximal degree in co-relation 25508. Up to 2787 conditions per place. [2024-06-04 14:50:20,651 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 167 selfloop transitions, 14 changer transitions 0/216 dead transitions. [2024-06-04 14:50:20,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 216 transitions, 2109 flow [2024-06-04 14:50:20,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:50:20,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:50:20,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-04 14:50:20,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:50:20,653 INFO L175 Difference]: Start difference. First operand has 169 places, 197 transitions, 1652 flow. Second operand 7 states and 140 transitions. [2024-06-04 14:50:20,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 216 transitions, 2109 flow [2024-06-04 14:50:20,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 216 transitions, 2067 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-04 14:50:20,956 INFO L231 Difference]: Finished difference. Result has 171 places, 200 transitions, 1702 flow [2024-06-04 14:50:20,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1610, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1702, PETRI_PLACES=171, PETRI_TRANSITIONS=200} [2024-06-04 14:50:20,956 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 126 predicate places. [2024-06-04 14:50:20,957 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 200 transitions, 1702 flow [2024-06-04 14:50:20,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:20,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:20,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:20,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-04 14:50:20,957 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:20,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:20,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1087568816, now seen corresponding path program 1 times [2024-06-04 14:50:20,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:20,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029029146] [2024-06-04 14:50:20,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:20,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:22,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:22,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:22,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029029146] [2024-06-04 14:50:22,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029029146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:22,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:22,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:50:22,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259517731] [2024-06-04 14:50:22,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:22,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:50:22,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:22,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:50:22,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:50:22,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:50:22,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 200 transitions, 1702 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:22,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:22,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:50:22,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:22,919 INFO L124 PetriNetUnfolderBase]: 2016/3238 cut-off events. [2024-06-04 14:50:22,919 INFO L125 PetriNetUnfolderBase]: For 269029/269029 co-relation queries the response was YES. [2024-06-04 14:50:22,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26275 conditions, 3238 events. 2016/3238 cut-off events. For 269029/269029 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 17493 event pairs, 533 based on Foata normal form. 6/3242 useless extension candidates. Maximal degree in co-relation 26199. Up to 2814 conditions per place. [2024-06-04 14:50:22,950 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 169 selfloop transitions, 15 changer transitions 0/219 dead transitions. [2024-06-04 14:50:22,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 219 transitions, 2157 flow [2024-06-04 14:50:22,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:50:22,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:50:22,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-04 14:50:22,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:50:22,952 INFO L175 Difference]: Start difference. First operand has 171 places, 200 transitions, 1702 flow. Second operand 7 states and 140 transitions. [2024-06-04 14:50:22,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 219 transitions, 2157 flow [2024-06-04 14:50:23,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 219 transitions, 2087 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-04 14:50:23,268 INFO L231 Difference]: Finished difference. Result has 173 places, 204 transitions, 1723 flow [2024-06-04 14:50:23,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1632, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1723, PETRI_PLACES=173, PETRI_TRANSITIONS=204} [2024-06-04 14:50:23,268 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 128 predicate places. [2024-06-04 14:50:23,268 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 204 transitions, 1723 flow [2024-06-04 14:50:23,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:23,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:23,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:23,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-04 14:50:23,269 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:23,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:23,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1258991026, now seen corresponding path program 2 times [2024-06-04 14:50:23,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:23,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649050158] [2024-06-04 14:50:23,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:23,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:23,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:24,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:24,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:24,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649050158] [2024-06-04 14:50:24,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649050158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:24,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:24,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:50:24,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603242911] [2024-06-04 14:50:24,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:24,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:50:24,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:24,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:50:24,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:50:24,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:50:24,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 204 transitions, 1723 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:24,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:24,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:50:24,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:25,159 INFO L124 PetriNetUnfolderBase]: 2045/3283 cut-off events. [2024-06-04 14:50:25,160 INFO L125 PetriNetUnfolderBase]: For 279558/279560 co-relation queries the response was YES. [2024-06-04 14:50:25,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27366 conditions, 3283 events. 2045/3283 cut-off events. For 279558/279560 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 17834 event pairs, 538 based on Foata normal form. 5/3286 useless extension candidates. Maximal degree in co-relation 27289. Up to 2807 conditions per place. [2024-06-04 14:50:25,197 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 159 selfloop transitions, 31 changer transitions 0/225 dead transitions. [2024-06-04 14:50:25,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 225 transitions, 2326 flow [2024-06-04 14:50:25,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:50:25,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:50:25,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-04 14:50:25,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.461038961038961 [2024-06-04 14:50:25,199 INFO L175 Difference]: Start difference. First operand has 173 places, 204 transitions, 1723 flow. Second operand 7 states and 142 transitions. [2024-06-04 14:50:25,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 225 transitions, 2326 flow [2024-06-04 14:50:25,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 225 transitions, 2263 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-04 14:50:25,484 INFO L231 Difference]: Finished difference. Result has 176 places, 211 transitions, 1841 flow [2024-06-04 14:50:25,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1660, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1841, PETRI_PLACES=176, PETRI_TRANSITIONS=211} [2024-06-04 14:50:25,484 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 131 predicate places. [2024-06-04 14:50:25,484 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 211 transitions, 1841 flow [2024-06-04 14:50:25,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:25,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:25,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:25,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-04 14:50:25,485 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:25,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:25,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1258753876, now seen corresponding path program 3 times [2024-06-04 14:50:25,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:25,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80451255] [2024-06-04 14:50:25,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:25,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:26,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:26,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:26,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80451255] [2024-06-04 14:50:26,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80451255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:26,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:26,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:50:26,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805094408] [2024-06-04 14:50:26,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:26,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:50:26,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:26,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:50:26,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:50:26,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:50:26,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 211 transitions, 1841 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:26,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:26,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:50:26,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:27,438 INFO L124 PetriNetUnfolderBase]: 2033/3267 cut-off events. [2024-06-04 14:50:27,438 INFO L125 PetriNetUnfolderBase]: For 288348/288350 co-relation queries the response was YES. [2024-06-04 14:50:27,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27926 conditions, 3267 events. 2033/3267 cut-off events. For 288348/288350 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 17749 event pairs, 536 based on Foata normal form. 6/3271 useless extension candidates. Maximal degree in co-relation 27847. Up to 2836 conditions per place. [2024-06-04 14:50:27,469 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 172 selfloop transitions, 20 changer transitions 0/227 dead transitions. [2024-06-04 14:50:27,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 227 transitions, 2331 flow [2024-06-04 14:50:27,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:50:27,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:50:27,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-04 14:50:27,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512987012987013 [2024-06-04 14:50:27,470 INFO L175 Difference]: Start difference. First operand has 176 places, 211 transitions, 1841 flow. Second operand 7 states and 139 transitions. [2024-06-04 14:50:27,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 227 transitions, 2331 flow [2024-06-04 14:50:27,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 227 transitions, 2267 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-04 14:50:27,745 INFO L231 Difference]: Finished difference. Result has 180 places, 215 transitions, 1891 flow [2024-06-04 14:50:27,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1787, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1891, PETRI_PLACES=180, PETRI_TRANSITIONS=215} [2024-06-04 14:50:27,745 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 135 predicate places. [2024-06-04 14:50:27,746 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 215 transitions, 1891 flow [2024-06-04 14:50:27,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:27,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:27,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:27,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-04 14:50:27,746 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:27,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:27,747 INFO L85 PathProgramCache]: Analyzing trace with hash 427672800, now seen corresponding path program 1 times [2024-06-04 14:50:27,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:27,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373510138] [2024-06-04 14:50:27,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:27,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:28,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:28,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:28,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373510138] [2024-06-04 14:50:28,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373510138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:28,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:28,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:50:28,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096070366] [2024-06-04 14:50:28,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:28,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:50:28,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:28,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:50:28,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:50:29,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:50:29,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 215 transitions, 1891 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:29,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:29,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:50:29,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:30,251 INFO L124 PetriNetUnfolderBase]: 2454/3803 cut-off events. [2024-06-04 14:50:30,251 INFO L125 PetriNetUnfolderBase]: For 343691/343691 co-relation queries the response was YES. [2024-06-04 14:50:30,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33095 conditions, 3803 events. 2454/3803 cut-off events. For 343691/343691 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 20103 event pairs, 508 based on Foata normal form. 16/3817 useless extension candidates. Maximal degree in co-relation 33014. Up to 3311 conditions per place. [2024-06-04 14:50:30,283 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 245 selfloop transitions, 25 changer transitions 0/275 dead transitions. [2024-06-04 14:50:30,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 275 transitions, 2925 flow [2024-06-04 14:50:30,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:50:30,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:50:30,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 221 transitions. [2024-06-04 14:50:30,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45661157024793386 [2024-06-04 14:50:30,284 INFO L175 Difference]: Start difference. First operand has 180 places, 215 transitions, 1891 flow. Second operand 11 states and 221 transitions. [2024-06-04 14:50:30,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 275 transitions, 2925 flow [2024-06-04 14:50:30,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 275 transitions, 2858 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-04 14:50:30,533 INFO L231 Difference]: Finished difference. Result has 186 places, 217 transitions, 1978 flow [2024-06-04 14:50:30,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1824, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1978, PETRI_PLACES=186, PETRI_TRANSITIONS=217} [2024-06-04 14:50:30,534 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 141 predicate places. [2024-06-04 14:50:30,534 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 217 transitions, 1978 flow [2024-06-04 14:50:30,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:30,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:30,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:30,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-04 14:50:30,534 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:30,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:30,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1828671140, now seen corresponding path program 2 times [2024-06-04 14:50:30,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:30,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131350174] [2024-06-04 14:50:30,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:30,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:30,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:31,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:31,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:31,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131350174] [2024-06-04 14:50:31,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131350174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:31,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:31,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:50:31,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471400594] [2024-06-04 14:50:31,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:31,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:50:31,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:31,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:50:31,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:50:31,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:50:31,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 217 transitions, 1978 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:31,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:31,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:50:31,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:33,071 INFO L124 PetriNetUnfolderBase]: 2418/3743 cut-off events. [2024-06-04 14:50:33,071 INFO L125 PetriNetUnfolderBase]: For 337284/337284 co-relation queries the response was YES. [2024-06-04 14:50:33,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32074 conditions, 3743 events. 2418/3743 cut-off events. For 337284/337284 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 19666 event pairs, 612 based on Foata normal form. 20/3761 useless extension candidates. Maximal degree in co-relation 31992. Up to 3423 conditions per place. [2024-06-04 14:50:33,105 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 238 selfloop transitions, 22 changer transitions 0/265 dead transitions. [2024-06-04 14:50:33,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 265 transitions, 2672 flow [2024-06-04 14:50:33,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:50:33,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:50:33,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-04 14:50:33,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45227272727272727 [2024-06-04 14:50:33,106 INFO L175 Difference]: Start difference. First operand has 186 places, 217 transitions, 1978 flow. Second operand 10 states and 199 transitions. [2024-06-04 14:50:33,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 265 transitions, 2672 flow [2024-06-04 14:50:33,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 265 transitions, 2580 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-04 14:50:33,532 INFO L231 Difference]: Finished difference. Result has 189 places, 217 transitions, 1937 flow [2024-06-04 14:50:33,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1886, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1937, PETRI_PLACES=189, PETRI_TRANSITIONS=217} [2024-06-04 14:50:33,533 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 144 predicate places. [2024-06-04 14:50:33,533 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 217 transitions, 1937 flow [2024-06-04 14:50:33,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:33,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:33,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:33,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-04 14:50:33,533 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:33,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:33,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1372128392, now seen corresponding path program 3 times [2024-06-04 14:50:33,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:33,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847547389] [2024-06-04 14:50:33,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:33,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:33,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:34,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:34,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:34,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847547389] [2024-06-04 14:50:34,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847547389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:34,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:34,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:50:34,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760695368] [2024-06-04 14:50:34,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:34,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:50:34,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:34,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:50:34,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:50:34,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:50:34,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 217 transitions, 1937 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:34,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:34,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:50:34,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:35,999 INFO L124 PetriNetUnfolderBase]: 2493/3876 cut-off events. [2024-06-04 14:50:35,999 INFO L125 PetriNetUnfolderBase]: For 352598/352600 co-relation queries the response was YES. [2024-06-04 14:50:36,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32763 conditions, 3876 events. 2493/3876 cut-off events. For 352598/352600 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 20708 event pairs, 572 based on Foata normal form. 20/3893 useless extension candidates. Maximal degree in co-relation 32679. Up to 3210 conditions per place. [2024-06-04 14:50:36,037 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 179 selfloop transitions, 81 changer transitions 0/265 dead transitions. [2024-06-04 14:50:36,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 265 transitions, 2691 flow [2024-06-04 14:50:36,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:50:36,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:50:36,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 207 transitions. [2024-06-04 14:50:36,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47045454545454546 [2024-06-04 14:50:36,039 INFO L175 Difference]: Start difference. First operand has 189 places, 217 transitions, 1937 flow. Second operand 10 states and 207 transitions. [2024-06-04 14:50:36,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 265 transitions, 2691 flow [2024-06-04 14:50:36,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 265 transitions, 2642 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-04 14:50:36,260 INFO L231 Difference]: Finished difference. Result has 190 places, 218 transitions, 2109 flow [2024-06-04 14:50:36,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1888, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2109, PETRI_PLACES=190, PETRI_TRANSITIONS=218} [2024-06-04 14:50:36,261 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 145 predicate places. [2024-06-04 14:50:36,261 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 218 transitions, 2109 flow [2024-06-04 14:50:36,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:36,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:36,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:36,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-04 14:50:36,262 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:36,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:36,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1372313090, now seen corresponding path program 1 times [2024-06-04 14:50:36,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:36,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755295679] [2024-06-04 14:50:36,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:36,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:37,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:37,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:37,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755295679] [2024-06-04 14:50:37,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755295679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:37,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:37,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:50:37,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105521241] [2024-06-04 14:50:37,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:37,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:50:37,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:37,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:50:37,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:50:37,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:50:37,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 218 transitions, 2109 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:37,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:37,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:50:37,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:38,777 INFO L124 PetriNetUnfolderBase]: 2510/3898 cut-off events. [2024-06-04 14:50:38,777 INFO L125 PetriNetUnfolderBase]: For 351389/351391 co-relation queries the response was YES. [2024-06-04 14:50:38,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33440 conditions, 3898 events. 2510/3898 cut-off events. For 351389/351391 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 20856 event pairs, 582 based on Foata normal form. 4/3899 useless extension candidates. Maximal degree in co-relation 33355. Up to 3464 conditions per place. [2024-06-04 14:50:38,811 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 188 selfloop transitions, 71 changer transitions 0/264 dead transitions. [2024-06-04 14:50:38,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 264 transitions, 2830 flow [2024-06-04 14:50:38,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:50:38,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:50:38,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-04 14:50:38,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:50:38,813 INFO L175 Difference]: Start difference. First operand has 190 places, 218 transitions, 2109 flow. Second operand 10 states and 200 transitions. [2024-06-04 14:50:38,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 264 transitions, 2830 flow [2024-06-04 14:50:39,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 264 transitions, 2633 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-04 14:50:39,260 INFO L231 Difference]: Finished difference. Result has 193 places, 223 transitions, 2154 flow [2024-06-04 14:50:39,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1916, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2154, PETRI_PLACES=193, PETRI_TRANSITIONS=223} [2024-06-04 14:50:39,261 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 148 predicate places. [2024-06-04 14:50:39,261 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 223 transitions, 2154 flow [2024-06-04 14:50:39,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:39,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:39,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:39,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-04 14:50:39,261 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:39,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:39,262 INFO L85 PathProgramCache]: Analyzing trace with hash 598493340, now seen corresponding path program 4 times [2024-06-04 14:50:39,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:39,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139832524] [2024-06-04 14:50:39,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:39,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:40,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:40,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:40,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139832524] [2024-06-04 14:50:40,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139832524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:40,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:40,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:50:40,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881130860] [2024-06-04 14:50:40,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:40,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:50:40,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:40,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:50:40,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:50:40,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:50:40,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 223 transitions, 2154 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:40,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:40,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:50:40,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:41,756 INFO L124 PetriNetUnfolderBase]: 2585/4033 cut-off events. [2024-06-04 14:50:41,756 INFO L125 PetriNetUnfolderBase]: For 382734/382736 co-relation queries the response was YES. [2024-06-04 14:50:41,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34626 conditions, 4033 events. 2585/4033 cut-off events. For 382734/382736 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 21920 event pairs, 576 based on Foata normal form. 20/4050 useless extension candidates. Maximal degree in co-relation 34539. Up to 3362 conditions per place. [2024-06-04 14:50:41,791 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 191 selfloop transitions, 74 changer transitions 0/270 dead transitions. [2024-06-04 14:50:41,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 270 transitions, 2936 flow [2024-06-04 14:50:41,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:50:41,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:50:41,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2024-06-04 14:50:41,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-06-04 14:50:41,793 INFO L175 Difference]: Start difference. First operand has 193 places, 223 transitions, 2154 flow. Second operand 10 states and 205 transitions. [2024-06-04 14:50:41,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 270 transitions, 2936 flow [2024-06-04 14:50:42,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 270 transitions, 2739 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-04 14:50:42,263 INFO L231 Difference]: Finished difference. Result has 196 places, 224 transitions, 2168 flow [2024-06-04 14:50:42,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1957, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2168, PETRI_PLACES=196, PETRI_TRANSITIONS=224} [2024-06-04 14:50:42,264 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 151 predicate places. [2024-06-04 14:50:42,264 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 224 transitions, 2168 flow [2024-06-04 14:50:42,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:42,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:42,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:42,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-04 14:50:42,265 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:42,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:42,265 INFO L85 PathProgramCache]: Analyzing trace with hash 212688966, now seen corresponding path program 2 times [2024-06-04 14:50:42,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:42,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74682230] [2024-06-04 14:50:42,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:42,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:43,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:43,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:43,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74682230] [2024-06-04 14:50:43,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74682230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:43,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:43,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:50:43,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890482950] [2024-06-04 14:50:43,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:43,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:50:43,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:43,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:50:43,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:50:43,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:50:43,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 224 transitions, 2168 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:43,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:43,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:50:43,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:44,754 INFO L124 PetriNetUnfolderBase]: 2613/4086 cut-off events. [2024-06-04 14:50:44,754 INFO L125 PetriNetUnfolderBase]: For 380281/380283 co-relation queries the response was YES. [2024-06-04 14:50:44,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35100 conditions, 4086 events. 2613/4086 cut-off events. For 380281/380283 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 22389 event pairs, 609 based on Foata normal form. 4/4087 useless extension candidates. Maximal degree in co-relation 35012. Up to 3628 conditions per place. [2024-06-04 14:50:44,792 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 198 selfloop transitions, 66 changer transitions 0/269 dead transitions. [2024-06-04 14:50:44,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 269 transitions, 2911 flow [2024-06-04 14:50:44,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:50:44,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:50:44,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-04 14:50:44,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45227272727272727 [2024-06-04 14:50:44,793 INFO L175 Difference]: Start difference. First operand has 196 places, 224 transitions, 2168 flow. Second operand 10 states and 199 transitions. [2024-06-04 14:50:44,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 269 transitions, 2911 flow [2024-06-04 14:50:45,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 269 transitions, 2722 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-04 14:50:45,181 INFO L231 Difference]: Finished difference. Result has 199 places, 230 transitions, 2229 flow [2024-06-04 14:50:45,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1985, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2229, PETRI_PLACES=199, PETRI_TRANSITIONS=230} [2024-06-04 14:50:45,182 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 154 predicate places. [2024-06-04 14:50:45,182 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 230 transitions, 2229 flow [2024-06-04 14:50:45,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:45,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:45,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:45,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-04 14:50:45,183 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:45,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:45,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1538272878, now seen corresponding path program 3 times [2024-06-04 14:50:45,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:45,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159486682] [2024-06-04 14:50:45,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:45,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:45,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:46,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:46,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:46,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159486682] [2024-06-04 14:50:46,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159486682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:46,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:46,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:50:46,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555679408] [2024-06-04 14:50:46,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:46,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:50:46,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:46,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:50:46,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:50:46,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:50:46,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 230 transitions, 2229 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:46,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:46,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:50:46,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:47,610 INFO L124 PetriNetUnfolderBase]: 2630/4123 cut-off events. [2024-06-04 14:50:47,610 INFO L125 PetriNetUnfolderBase]: For 389739/389741 co-relation queries the response was YES. [2024-06-04 14:50:47,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35483 conditions, 4123 events. 2630/4123 cut-off events. For 389739/389741 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 22720 event pairs, 624 based on Foata normal form. 4/4124 useless extension candidates. Maximal degree in co-relation 35393. Up to 3655 conditions per place. [2024-06-04 14:50:47,645 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 199 selfloop transitions, 69 changer transitions 0/273 dead transitions. [2024-06-04 14:50:47,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 273 transitions, 2968 flow [2024-06-04 14:50:47,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:50:47,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:50:47,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-04 14:50:47,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-04 14:50:47,647 INFO L175 Difference]: Start difference. First operand has 199 places, 230 transitions, 2229 flow. Second operand 10 states and 198 transitions. [2024-06-04 14:50:47,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 273 transitions, 2968 flow [2024-06-04 14:50:47,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 273 transitions, 2769 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-04 14:50:47,983 INFO L231 Difference]: Finished difference. Result has 202 places, 234 transitions, 2264 flow [2024-06-04 14:50:47,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2034, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2264, PETRI_PLACES=202, PETRI_TRANSITIONS=234} [2024-06-04 14:50:47,984 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 157 predicate places. [2024-06-04 14:50:47,984 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 234 transitions, 2264 flow [2024-06-04 14:50:47,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:47,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:47,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:47,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-04 14:50:47,985 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:47,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:47,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1544447344, now seen corresponding path program 4 times [2024-06-04 14:50:47,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:47,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417262840] [2024-06-04 14:50:47,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:47,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:49,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:49,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:49,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417262840] [2024-06-04 14:50:49,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417262840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:49,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:49,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:50:49,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13911430] [2024-06-04 14:50:49,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:49,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:50:49,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:49,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:50:49,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:50:49,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:50:49,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 234 transitions, 2264 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:49,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:49,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:50:49,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:50,461 INFO L124 PetriNetUnfolderBase]: 2647/4125 cut-off events. [2024-06-04 14:50:50,461 INFO L125 PetriNetUnfolderBase]: For 403985/403987 co-relation queries the response was YES. [2024-06-04 14:50:50,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35913 conditions, 4125 events. 2647/4125 cut-off events. For 403985/403987 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 22539 event pairs, 590 based on Foata normal form. 4/4126 useless extension candidates. Maximal degree in co-relation 35822. Up to 3605 conditions per place. [2024-06-04 14:50:50,501 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 195 selfloop transitions, 76 changer transitions 0/276 dead transitions. [2024-06-04 14:50:50,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 276 transitions, 2996 flow [2024-06-04 14:50:50,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:50:50,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:50:50,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-04 14:50:50,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45227272727272727 [2024-06-04 14:50:50,503 INFO L175 Difference]: Start difference. First operand has 202 places, 234 transitions, 2264 flow. Second operand 10 states and 199 transitions. [2024-06-04 14:50:50,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 276 transitions, 2996 flow [2024-06-04 14:50:50,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 276 transitions, 2813 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-04 14:50:50,824 INFO L231 Difference]: Finished difference. Result has 206 places, 236 transitions, 2314 flow [2024-06-04 14:50:50,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2081, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2314, PETRI_PLACES=206, PETRI_TRANSITIONS=236} [2024-06-04 14:50:50,825 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 161 predicate places. [2024-06-04 14:50:50,825 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 236 transitions, 2314 flow [2024-06-04 14:50:50,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:50,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:50,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:50,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-04 14:50:50,826 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:50,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:50,826 INFO L85 PathProgramCache]: Analyzing trace with hash 604326751, now seen corresponding path program 1 times [2024-06-04 14:50:50,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:50,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608915356] [2024-06-04 14:50:50,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:50,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:51,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:51,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:51,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608915356] [2024-06-04 14:50:51,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608915356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:51,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:51,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:50:51,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181890559] [2024-06-04 14:50:51,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:51,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:50:51,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:51,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:50:51,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:50:51,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:50:51,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 236 transitions, 2314 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:50:51,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:51,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:50:51,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:52,829 INFO L124 PetriNetUnfolderBase]: 2523/4022 cut-off events. [2024-06-04 14:50:52,829 INFO L125 PetriNetUnfolderBase]: For 419267/419269 co-relation queries the response was YES. [2024-06-04 14:50:52,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35660 conditions, 4022 events. 2523/4022 cut-off events. For 419267/419269 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 22714 event pairs, 614 based on Foata normal form. 4/4010 useless extension candidates. Maximal degree in co-relation 35568. Up to 3705 conditions per place. [2024-06-04 14:50:52,868 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 229 selfloop transitions, 20 changer transitions 0/267 dead transitions. [2024-06-04 14:50:52,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 267 transitions, 2950 flow [2024-06-04 14:50:52,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:50:52,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:50:52,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-04 14:50:52,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45738636363636365 [2024-06-04 14:50:52,870 INFO L175 Difference]: Start difference. First operand has 206 places, 236 transitions, 2314 flow. Second operand 8 states and 161 transitions. [2024-06-04 14:50:52,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 267 transitions, 2950 flow [2024-06-04 14:50:53,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 267 transitions, 2735 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-04 14:50:53,138 INFO L231 Difference]: Finished difference. Result has 206 places, 239 transitions, 2210 flow [2024-06-04 14:50:53,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2099, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2210, PETRI_PLACES=206, PETRI_TRANSITIONS=239} [2024-06-04 14:50:53,138 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 161 predicate places. [2024-06-04 14:50:53,139 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 239 transitions, 2210 flow [2024-06-04 14:50:53,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:50:53,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:53,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:53,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-04 14:50:53,139 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:53,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:53,140 INFO L85 PathProgramCache]: Analyzing trace with hash 604655444, now seen corresponding path program 1 times [2024-06-04 14:50:53,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:53,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694098112] [2024-06-04 14:50:53,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:53,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:54,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:54,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:54,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694098112] [2024-06-04 14:50:54,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694098112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:54,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:54,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:50:54,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710035263] [2024-06-04 14:50:54,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:54,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:50:54,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:54,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:50:54,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:50:54,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:50:54,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 239 transitions, 2210 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:50:54,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:54,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:50:54,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:55,209 INFO L124 PetriNetUnfolderBase]: 2524/4015 cut-off events. [2024-06-04 14:50:55,209 INFO L125 PetriNetUnfolderBase]: For 427051/427051 co-relation queries the response was YES. [2024-06-04 14:50:55,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35887 conditions, 4015 events. 2524/4015 cut-off events. For 427051/427051 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 22556 event pairs, 603 based on Foata normal form. 1/3998 useless extension candidates. Maximal degree in co-relation 35794. Up to 3723 conditions per place. [2024-06-04 14:50:55,243 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 228 selfloop transitions, 18 changer transitions 0/264 dead transitions. [2024-06-04 14:50:55,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 264 transitions, 2830 flow [2024-06-04 14:50:55,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:50:55,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:50:55,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-04 14:50:55,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-04 14:50:55,245 INFO L175 Difference]: Start difference. First operand has 206 places, 239 transitions, 2210 flow. Second operand 8 states and 155 transitions. [2024-06-04 14:50:55,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 264 transitions, 2830 flow [2024-06-04 14:50:55,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 264 transitions, 2743 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-04 14:50:55,649 INFO L231 Difference]: Finished difference. Result has 208 places, 242 transitions, 2237 flow [2024-06-04 14:50:55,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2123, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2237, PETRI_PLACES=208, PETRI_TRANSITIONS=242} [2024-06-04 14:50:55,650 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 163 predicate places. [2024-06-04 14:50:55,650 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 242 transitions, 2237 flow [2024-06-04 14:50:55,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:50:55,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:55,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:55,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-04 14:50:55,651 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:55,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:55,651 INFO L85 PathProgramCache]: Analyzing trace with hash 604655041, now seen corresponding path program 2 times [2024-06-04 14:50:55,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:55,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770505633] [2024-06-04 14:50:55,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:55,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:56,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:56,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:56,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770505633] [2024-06-04 14:50:56,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770505633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:56,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:56,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:50:56,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635414543] [2024-06-04 14:50:56,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:56,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:50:56,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:56,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:50:56,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:50:56,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:50:56,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 242 transitions, 2237 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:50:56,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:56,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:50:56,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:57,627 INFO L124 PetriNetUnfolderBase]: 2529/4026 cut-off events. [2024-06-04 14:50:57,627 INFO L125 PetriNetUnfolderBase]: For 442459/442459 co-relation queries the response was YES. [2024-06-04 14:50:57,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36377 conditions, 4026 events. 2529/4026 cut-off events. For 442459/442459 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 22686 event pairs, 603 based on Foata normal form. 2/4010 useless extension candidates. Maximal degree in co-relation 36283. Up to 3709 conditions per place. [2024-06-04 14:50:57,674 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 226 selfloop transitions, 24 changer transitions 0/268 dead transitions. [2024-06-04 14:50:57,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 268 transitions, 2869 flow [2024-06-04 14:50:57,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:50:57,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:50:57,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-04 14:50:57,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460227272727273 [2024-06-04 14:50:57,676 INFO L175 Difference]: Start difference. First operand has 208 places, 242 transitions, 2237 flow. Second operand 8 states and 157 transitions. [2024-06-04 14:50:57,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 268 transitions, 2869 flow [2024-06-04 14:50:58,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 268 transitions, 2777 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-04 14:50:58,161 INFO L231 Difference]: Finished difference. Result has 210 places, 245 transitions, 2271 flow [2024-06-04 14:50:58,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2145, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2271, PETRI_PLACES=210, PETRI_TRANSITIONS=245} [2024-06-04 14:50:58,161 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 165 predicate places. [2024-06-04 14:50:58,161 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 245 transitions, 2271 flow [2024-06-04 14:50:58,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:50:58,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:58,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:58,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-04 14:50:58,162 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:58,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:58,162 INFO L85 PathProgramCache]: Analyzing trace with hash 930976983, now seen corresponding path program 1 times [2024-06-04 14:50:58,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:58,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387069255] [2024-06-04 14:50:58,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:58,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:58,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:58,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:58,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387069255] [2024-06-04 14:50:58,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387069255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:58,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:58,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:50:58,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202466475] [2024-06-04 14:50:58,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:58,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:50:58,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:58,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:50:58,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:50:59,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:50:59,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 245 transitions, 2271 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:59,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:59,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:50:59,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:59,898 INFO L124 PetriNetUnfolderBase]: 2576/4075 cut-off events. [2024-06-04 14:50:59,899 INFO L125 PetriNetUnfolderBase]: For 449411/449413 co-relation queries the response was YES. [2024-06-04 14:50:59,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36778 conditions, 4075 events. 2576/4075 cut-off events. For 449411/449413 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 22758 event pairs, 611 based on Foata normal form. 4/4070 useless extension candidates. Maximal degree in co-relation 36683. Up to 3707 conditions per place. [2024-06-04 14:50:59,946 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 218 selfloop transitions, 19 changer transitions 0/268 dead transitions. [2024-06-04 14:50:59,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 268 transitions, 2881 flow [2024-06-04 14:50:59,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:50:59,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:50:59,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-04 14:50:59,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:50:59,947 INFO L175 Difference]: Start difference. First operand has 210 places, 245 transitions, 2271 flow. Second operand 7 states and 140 transitions. [2024-06-04 14:50:59,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 268 transitions, 2881 flow [2024-06-04 14:51:00,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 268 transitions, 2777 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-04 14:51:00,517 INFO L231 Difference]: Finished difference. Result has 211 places, 248 transitions, 2285 flow [2024-06-04 14:51:00,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2167, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2285, PETRI_PLACES=211, PETRI_TRANSITIONS=248} [2024-06-04 14:51:00,517 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 166 predicate places. [2024-06-04 14:51:00,517 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 248 transitions, 2285 flow [2024-06-04 14:51:00,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:00,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:00,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:00,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-04 14:51:00,518 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:51:00,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:00,518 INFO L85 PathProgramCache]: Analyzing trace with hash -294256075, now seen corresponding path program 2 times [2024-06-04 14:51:00,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:00,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726767784] [2024-06-04 14:51:00,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:00,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:01,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:51:01,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:01,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726767784] [2024-06-04 14:51:01,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726767784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:01,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:01,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:51:01,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128956901] [2024-06-04 14:51:01,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:01,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:51:01,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:01,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:51:01,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:51:01,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:51:01,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 248 transitions, 2285 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:01,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:01,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:51:01,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:02,339 INFO L124 PetriNetUnfolderBase]: 2602/4115 cut-off events. [2024-06-04 14:51:02,339 INFO L125 PetriNetUnfolderBase]: For 468034/468036 co-relation queries the response was YES. [2024-06-04 14:51:02,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37740 conditions, 4115 events. 2602/4115 cut-off events. For 468034/468036 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 23018 event pairs, 612 based on Foata normal form. 4/4110 useless extension candidates. Maximal degree in co-relation 37644. Up to 3725 conditions per place. [2024-06-04 14:51:02,382 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 215 selfloop transitions, 27 changer transitions 0/273 dead transitions. [2024-06-04 14:51:02,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 273 transitions, 3119 flow [2024-06-04 14:51:02,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:51:02,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:51:02,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-04 14:51:02,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:51:02,384 INFO L175 Difference]: Start difference. First operand has 211 places, 248 transitions, 2285 flow. Second operand 7 states and 140 transitions. [2024-06-04 14:51:02,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 273 transitions, 3119 flow [2024-06-04 14:51:02,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 273 transitions, 3035 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-04 14:51:02,773 INFO L231 Difference]: Finished difference. Result has 214 places, 254 transitions, 2415 flow [2024-06-04 14:51:02,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2201, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2415, PETRI_PLACES=214, PETRI_TRANSITIONS=254} [2024-06-04 14:51:02,774 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 169 predicate places. [2024-06-04 14:51:02,774 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 254 transitions, 2415 flow [2024-06-04 14:51:02,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:02,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:02,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:02,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-04 14:51:02,775 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:51:02,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:02,775 INFO L85 PathProgramCache]: Analyzing trace with hash -203172728, now seen corresponding path program 5 times [2024-06-04 14:51:02,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:02,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647059490] [2024-06-04 14:51:02,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:02,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:03,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:51:03,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:03,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647059490] [2024-06-04 14:51:03,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647059490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:03,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:03,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:51:03,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707027958] [2024-06-04 14:51:03,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:03,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:51:03,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:03,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:51:03,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:51:03,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:51:03,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 254 transitions, 2415 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:03,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:03,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:51:03,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:05,333 INFO L124 PetriNetUnfolderBase]: 2783/4350 cut-off events. [2024-06-04 14:51:05,333 INFO L125 PetriNetUnfolderBase]: For 523415/523417 co-relation queries the response was YES. [2024-06-04 14:51:05,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40401 conditions, 4350 events. 2783/4350 cut-off events. For 523415/523417 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 24108 event pairs, 584 based on Foata normal form. 20/4367 useless extension candidates. Maximal degree in co-relation 40304. Up to 3660 conditions per place. [2024-06-04 14:51:05,375 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 218 selfloop transitions, 75 changer transitions 0/298 dead transitions. [2024-06-04 14:51:05,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 298 transitions, 3268 flow [2024-06-04 14:51:05,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:51:05,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:51:05,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2024-06-04 14:51:05,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46136363636363636 [2024-06-04 14:51:05,377 INFO L175 Difference]: Start difference. First operand has 214 places, 254 transitions, 2415 flow. Second operand 10 states and 203 transitions. [2024-06-04 14:51:05,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 298 transitions, 3268 flow [2024-06-04 14:51:05,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 298 transitions, 3174 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-04 14:51:05,859 INFO L231 Difference]: Finished difference. Result has 221 places, 255 transitions, 2542 flow [2024-06-04 14:51:05,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2321, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2542, PETRI_PLACES=221, PETRI_TRANSITIONS=255} [2024-06-04 14:51:05,859 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 176 predicate places. [2024-06-04 14:51:05,859 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 255 transitions, 2542 flow [2024-06-04 14:51:05,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:05,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:05,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:05,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-04 14:51:05,860 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:51:05,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:05,861 INFO L85 PathProgramCache]: Analyzing trace with hash -202988030, now seen corresponding path program 5 times [2024-06-04 14:51:05,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:05,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306255843] [2024-06-04 14:51:05,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:05,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:51:07,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:07,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306255843] [2024-06-04 14:51:07,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306255843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:07,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:07,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:51:07,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002291191] [2024-06-04 14:51:07,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:07,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:51:07,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:07,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:51:07,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:51:07,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:51:07,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 255 transitions, 2542 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:07,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:07,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:51:07,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:08,504 INFO L124 PetriNetUnfolderBase]: 2811/4393 cut-off events. [2024-06-04 14:51:08,504 INFO L125 PetriNetUnfolderBase]: For 517056/517058 co-relation queries the response was YES. [2024-06-04 14:51:08,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41185 conditions, 4393 events. 2811/4393 cut-off events. For 517056/517058 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 24382 event pairs, 617 based on Foata normal form. 4/4394 useless extension candidates. Maximal degree in co-relation 41086. Up to 3931 conditions per place. [2024-06-04 14:51:08,555 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 223 selfloop transitions, 69 changer transitions 0/297 dead transitions. [2024-06-04 14:51:08,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 297 transitions, 3348 flow [2024-06-04 14:51:08,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:51:08,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:51:08,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-04 14:51:08,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44772727272727275 [2024-06-04 14:51:08,556 INFO L175 Difference]: Start difference. First operand has 221 places, 255 transitions, 2542 flow. Second operand 10 states and 197 transitions. [2024-06-04 14:51:08,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 297 transitions, 3348 flow [2024-06-04 14:51:09,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 297 transitions, 3149 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-04 14:51:09,316 INFO L231 Difference]: Finished difference. Result has 224 places, 261 transitions, 2616 flow [2024-06-04 14:51:09,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2349, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2616, PETRI_PLACES=224, PETRI_TRANSITIONS=261} [2024-06-04 14:51:09,317 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 179 predicate places. [2024-06-04 14:51:09,317 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 261 transitions, 2616 flow [2024-06-04 14:51:09,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:09,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:09,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:09,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-04 14:51:09,317 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:51:09,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:09,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1205794848, now seen corresponding path program 6 times [2024-06-04 14:51:09,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:09,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989296508] [2024-06-04 14:51:09,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:09,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:09,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:10,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:51:10,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:10,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989296508] [2024-06-04 14:51:10,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989296508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:10,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:10,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:51:10,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373313284] [2024-06-04 14:51:10,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:10,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:51:10,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:10,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:51:10,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:51:10,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:51:10,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 261 transitions, 2616 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:10,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:10,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:51:10,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:11,881 INFO L124 PetriNetUnfolderBase]: 2864/4495 cut-off events. [2024-06-04 14:51:11,881 INFO L125 PetriNetUnfolderBase]: For 536475/536477 co-relation queries the response was YES. [2024-06-04 14:51:11,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42241 conditions, 4495 events. 2864/4495 cut-off events. For 536475/536477 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 25293 event pairs, 634 based on Foata normal form. 4/4496 useless extension candidates. Maximal degree in co-relation 42140. Up to 3962 conditions per place. [2024-06-04 14:51:11,931 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 225 selfloop transitions, 79 changer transitions 0/309 dead transitions. [2024-06-04 14:51:11,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 309 transitions, 3768 flow [2024-06-04 14:51:11,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:51:11,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:51:11,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-04 14:51:11,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:51:11,933 INFO L175 Difference]: Start difference. First operand has 224 places, 261 transitions, 2616 flow. Second operand 10 states and 200 transitions. [2024-06-04 14:51:11,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 309 transitions, 3768 flow [2024-06-04 14:51:12,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 309 transitions, 3541 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-04 14:51:12,475 INFO L231 Difference]: Finished difference. Result has 227 places, 270 transitions, 2765 flow [2024-06-04 14:51:12,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2399, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2765, PETRI_PLACES=227, PETRI_TRANSITIONS=270} [2024-06-04 14:51:12,475 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 182 predicate places. [2024-06-04 14:51:12,476 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 270 transitions, 2765 flow [2024-06-04 14:51:12,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:12,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:12,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:12,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-04 14:51:12,476 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:51:12,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:12,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1427678898, now seen corresponding path program 7 times [2024-06-04 14:51:12,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:12,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874696205] [2024-06-04 14:51:12,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:12,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:13,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:51:13,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:13,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874696205] [2024-06-04 14:51:13,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874696205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:13,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:13,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:51:13,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493902314] [2024-06-04 14:51:13,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:13,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:51:13,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:13,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:51:13,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:51:13,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:51:13,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 270 transitions, 2765 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:13,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:13,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:51:13,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:14,950 INFO L124 PetriNetUnfolderBase]: 2881/4512 cut-off events. [2024-06-04 14:51:14,950 INFO L125 PetriNetUnfolderBase]: For 552827/552829 co-relation queries the response was YES. [2024-06-04 14:51:14,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42725 conditions, 4512 events. 2881/4512 cut-off events. For 552827/552829 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 25291 event pairs, 634 based on Foata normal form. 4/4513 useless extension candidates. Maximal degree in co-relation 42623. Up to 4036 conditions per place. [2024-06-04 14:51:15,002 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 230 selfloop transitions, 73 changer transitions 0/308 dead transitions. [2024-06-04 14:51:15,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 308 transitions, 3564 flow [2024-06-04 14:51:15,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:51:15,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:51:15,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-04 14:51:15,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-04 14:51:15,004 INFO L175 Difference]: Start difference. First operand has 227 places, 270 transitions, 2765 flow. Second operand 10 states and 198 transitions. [2024-06-04 14:51:15,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 308 transitions, 3564 flow [2024-06-04 14:51:15,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 308 transitions, 3437 flow, removed 46 selfloop flow, removed 3 redundant places. [2024-06-04 14:51:15,559 INFO L231 Difference]: Finished difference. Result has 234 places, 272 transitions, 2879 flow [2024-06-04 14:51:15,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2638, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2879, PETRI_PLACES=234, PETRI_TRANSITIONS=272} [2024-06-04 14:51:15,560 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 189 predicate places. [2024-06-04 14:51:15,560 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 272 transitions, 2879 flow [2024-06-04 14:51:15,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:15,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:15,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:15,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-04 14:51:15,560 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:51:15,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:15,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1972639724, now seen corresponding path program 8 times [2024-06-04 14:51:15,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:15,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586364563] [2024-06-04 14:51:15,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:15,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:16,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:51:16,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:16,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586364563] [2024-06-04 14:51:16,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586364563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:16,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:16,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:51:16,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100237654] [2024-06-04 14:51:16,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:16,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:51:16,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:16,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:51:16,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:51:16,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:51:16,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 272 transitions, 2879 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:16,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:16,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:51:16,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:18,128 INFO L124 PetriNetUnfolderBase]: 2898/4549 cut-off events. [2024-06-04 14:51:18,129 INFO L125 PetriNetUnfolderBase]: For 569244/569246 co-relation queries the response was YES. [2024-06-04 14:51:18,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43419 conditions, 4549 events. 2898/4549 cut-off events. For 569244/569246 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 25649 event pairs, 644 based on Foata normal form. 4/4550 useless extension candidates. Maximal degree in co-relation 43315. Up to 4004 conditions per place. [2024-06-04 14:51:18,177 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 228 selfloop transitions, 78 changer transitions 0/311 dead transitions. [2024-06-04 14:51:18,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 311 transitions, 3690 flow [2024-06-04 14:51:18,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:51:18,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:51:18,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-04 14:51:18,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45227272727272727 [2024-06-04 14:51:18,178 INFO L175 Difference]: Start difference. First operand has 234 places, 272 transitions, 2879 flow. Second operand 10 states and 199 transitions. [2024-06-04 14:51:18,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 311 transitions, 3690 flow [2024-06-04 14:51:18,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 311 transitions, 3455 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-04 14:51:18,759 INFO L231 Difference]: Finished difference. Result has 237 places, 274 transitions, 2899 flow [2024-06-04 14:51:18,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2644, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2899, PETRI_PLACES=237, PETRI_TRANSITIONS=274} [2024-06-04 14:51:18,759 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 192 predicate places. [2024-06-04 14:51:18,759 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 274 transitions, 2899 flow [2024-06-04 14:51:18,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:18,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:18,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:18,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-04 14:51:18,760 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:51:18,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:18,760 INFO L85 PathProgramCache]: Analyzing trace with hash 24913120, now seen corresponding path program 9 times [2024-06-04 14:51:18,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:18,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131323592] [2024-06-04 14:51:18,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:18,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:20,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:51:20,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:20,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131323592] [2024-06-04 14:51:20,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131323592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:20,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:20,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:51:20,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777160839] [2024-06-04 14:51:20,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:20,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:51:20,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:20,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:51:20,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:51:20,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:51:20,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 274 transitions, 2899 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:20,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:20,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:51:20,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:21,580 INFO L124 PetriNetUnfolderBase]: 2890/4517 cut-off events. [2024-06-04 14:51:21,581 INFO L125 PetriNetUnfolderBase]: For 576392/576394 co-relation queries the response was YES. [2024-06-04 14:51:21,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43279 conditions, 4517 events. 2890/4517 cut-off events. For 576392/576394 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 25193 event pairs, 627 based on Foata normal form. 4/4518 useless extension candidates. Maximal degree in co-relation 43174. Up to 4051 conditions per place. [2024-06-04 14:51:21,635 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 229 selfloop transitions, 76 changer transitions 0/310 dead transitions. [2024-06-04 14:51:21,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 310 transitions, 3618 flow [2024-06-04 14:51:21,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:51:21,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:51:21,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-04 14:51:21,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2024-06-04 14:51:21,636 INFO L175 Difference]: Start difference. First operand has 237 places, 274 transitions, 2899 flow. Second operand 10 states and 196 transitions. [2024-06-04 14:51:21,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 310 transitions, 3618 flow [2024-06-04 14:51:22,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 310 transitions, 3325 flow, removed 70 selfloop flow, removed 8 redundant places. [2024-06-04 14:51:22,340 INFO L231 Difference]: Finished difference. Result has 239 places, 274 transitions, 2765 flow [2024-06-04 14:51:22,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2606, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2765, PETRI_PLACES=239, PETRI_TRANSITIONS=274} [2024-06-04 14:51:22,340 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 194 predicate places. [2024-06-04 14:51:22,340 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 274 transitions, 2765 flow [2024-06-04 14:51:22,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:22,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:22,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:22,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-04 14:51:22,341 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:51:22,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:22,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1245739444, now seen corresponding path program 10 times [2024-06-04 14:51:22,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:22,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893231924] [2024-06-04 14:51:22,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:22,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:23,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:51:23,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:23,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893231924] [2024-06-04 14:51:23,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893231924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:23,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:23,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:51:23,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831553993] [2024-06-04 14:51:23,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:23,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:51:23,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:23,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:51:23,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:51:23,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:51:23,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 274 transitions, 2765 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:23,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:23,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:51:23,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:24,884 INFO L124 PetriNetUnfolderBase]: 2907/4549 cut-off events. [2024-06-04 14:51:24,884 INFO L125 PetriNetUnfolderBase]: For 591491/591493 co-relation queries the response was YES. [2024-06-04 14:51:24,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43443 conditions, 4549 events. 2907/4549 cut-off events. For 591491/591493 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 25504 event pairs, 616 based on Foata normal form. 4/4550 useless extension candidates. Maximal degree in co-relation 43337. Up to 3801 conditions per place. [2024-06-04 14:51:24,930 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 210 selfloop transitions, 99 changer transitions 0/314 dead transitions. [2024-06-04 14:51:24,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 314 transitions, 3588 flow [2024-06-04 14:51:24,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:51:24,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:51:24,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-04 14:51:24,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-04 14:51:24,931 INFO L175 Difference]: Start difference. First operand has 239 places, 274 transitions, 2765 flow. Second operand 10 states and 198 transitions. [2024-06-04 14:51:24,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 314 transitions, 3588 flow [2024-06-04 14:51:25,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 314 transitions, 3427 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-04 14:51:25,564 INFO L231 Difference]: Finished difference. Result has 240 places, 276 transitions, 2905 flow [2024-06-04 14:51:25,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2604, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2905, PETRI_PLACES=240, PETRI_TRANSITIONS=276} [2024-06-04 14:51:25,565 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 195 predicate places. [2024-06-04 14:51:25,565 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 276 transitions, 2905 flow [2024-06-04 14:51:25,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:25,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:25,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:25,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-04 14:51:25,566 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:51:25,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:25,566 INFO L85 PathProgramCache]: Analyzing trace with hash 115269313, now seen corresponding path program 3 times [2024-06-04 14:51:25,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:25,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519026555] [2024-06-04 14:51:25,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:25,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:26,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:51:26,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:26,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519026555] [2024-06-04 14:51:26,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519026555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:26,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:26,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:51:26,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715417809] [2024-06-04 14:51:26,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:26,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:51:26,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:26,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:51:26,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:51:26,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:51:26,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 276 transitions, 2905 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:51:26,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:26,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:51:26,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:27,580 INFO L124 PetriNetUnfolderBase]: 2763/4416 cut-off events. [2024-06-04 14:51:27,580 INFO L125 PetriNetUnfolderBase]: For 607850/607850 co-relation queries the response was YES. [2024-06-04 14:51:27,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42991 conditions, 4416 events. 2763/4416 cut-off events. For 607850/607850 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 25542 event pairs, 624 based on Foata normal form. 2/4407 useless extension candidates. Maximal degree in co-relation 42884. Up to 4015 conditions per place. [2024-06-04 14:51:27,629 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 238 selfloop transitions, 31 changer transitions 0/296 dead transitions. [2024-06-04 14:51:27,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 296 transitions, 3566 flow [2024-06-04 14:51:27,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:51:27,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:51:27,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-04 14:51:27,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-04 14:51:27,631 INFO L175 Difference]: Start difference. First operand has 240 places, 276 transitions, 2905 flow. Second operand 8 states and 153 transitions. [2024-06-04 14:51:27,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 296 transitions, 3566 flow [2024-06-04 14:51:28,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 296 transitions, 3283 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-04 14:51:28,104 INFO L231 Difference]: Finished difference. Result has 240 places, 279 transitions, 2772 flow [2024-06-04 14:51:28,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2622, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2772, PETRI_PLACES=240, PETRI_TRANSITIONS=279} [2024-06-04 14:51:28,104 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 195 predicate places. [2024-06-04 14:51:28,105 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 279 transitions, 2772 flow [2024-06-04 14:51:28,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:51:28,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:28,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:28,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-04 14:51:28,105 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:51:28,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:28,105 INFO L85 PathProgramCache]: Analyzing trace with hash 615754994, now seen corresponding path program 2 times [2024-06-04 14:51:28,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:28,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816998487] [2024-06-04 14:51:28,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:28,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:28,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:29,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:51:29,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:29,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816998487] [2024-06-04 14:51:29,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816998487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:29,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:29,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:51:29,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58756506] [2024-06-04 14:51:29,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:29,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:51:29,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:29,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:51:29,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:51:29,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:51:29,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 279 transitions, 2772 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:51:29,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:29,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:51:29,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:30,450 INFO L124 PetriNetUnfolderBase]: 2764/4409 cut-off events. [2024-06-04 14:51:30,451 INFO L125 PetriNetUnfolderBase]: For 619046/619046 co-relation queries the response was YES. [2024-06-04 14:51:30,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43063 conditions, 4409 events. 2764/4409 cut-off events. For 619046/619046 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 25385 event pairs, 614 based on Foata normal form. 1/4399 useless extension candidates. Maximal degree in co-relation 42955. Up to 4042 conditions per place. [2024-06-04 14:51:30,503 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 248 selfloop transitions, 23 changer transitions 0/298 dead transitions. [2024-06-04 14:51:30,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 298 transitions, 3433 flow [2024-06-04 14:51:30,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:51:30,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:51:30,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-04 14:51:30,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-04 14:51:30,505 INFO L175 Difference]: Start difference. First operand has 240 places, 279 transitions, 2772 flow. Second operand 8 states and 151 transitions. [2024-06-04 14:51:30,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 298 transitions, 3433 flow [2024-06-04 14:51:30,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 298 transitions, 3305 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-04 14:51:30,936 INFO L231 Difference]: Finished difference. Result has 242 places, 282 transitions, 2778 flow [2024-06-04 14:51:30,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2644, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2778, PETRI_PLACES=242, PETRI_TRANSITIONS=282} [2024-06-04 14:51:30,937 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 197 predicate places. [2024-06-04 14:51:30,937 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 282 transitions, 2778 flow [2024-06-04 14:51:30,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:51:30,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:30,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:30,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-04 14:51:30,937 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:51:30,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:30,938 INFO L85 PathProgramCache]: Analyzing trace with hash 615768479, now seen corresponding path program 1 times [2024-06-04 14:51:30,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:30,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038154506] [2024-06-04 14:51:30,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:30,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:32,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:51:32,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:32,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038154506] [2024-06-04 14:51:32,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038154506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:32,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:32,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:51:32,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210116935] [2024-06-04 14:51:32,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:32,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:51:32,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:32,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:51:32,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:51:32,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:51:32,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 282 transitions, 2778 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:32,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:32,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:51:32,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:33,097 INFO L124 PetriNetUnfolderBase]: 2610/4242 cut-off events. [2024-06-04 14:51:33,097 INFO L125 PetriNetUnfolderBase]: For 629768/629768 co-relation queries the response was YES. [2024-06-04 14:51:33,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42329 conditions, 4242 events. 2610/4242 cut-off events. For 629768/629768 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 25004 event pairs, 593 based on Foata normal form. 1/4226 useless extension candidates. Maximal degree in co-relation 42220. Up to 3728 conditions per place. [2024-06-04 14:51:33,149 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 231 selfloop transitions, 17 changer transitions 0/302 dead transitions. [2024-06-04 14:51:33,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 302 transitions, 3390 flow [2024-06-04 14:51:33,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:51:33,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:51:33,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-04 14:51:33,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-04 14:51:33,151 INFO L175 Difference]: Start difference. First operand has 242 places, 282 transitions, 2778 flow. Second operand 8 states and 156 transitions. [2024-06-04 14:51:33,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 302 transitions, 3390 flow [2024-06-04 14:51:33,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 302 transitions, 3278 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-04 14:51:33,867 INFO L231 Difference]: Finished difference. Result has 244 places, 285 transitions, 2780 flow [2024-06-04 14:51:33,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2666, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2780, PETRI_PLACES=244, PETRI_TRANSITIONS=285} [2024-06-04 14:51:33,867 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 199 predicate places. [2024-06-04 14:51:33,868 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 285 transitions, 2780 flow [2024-06-04 14:51:33,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:33,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:33,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:33,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-04 14:51:33,868 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:51:33,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:33,868 INFO L85 PathProgramCache]: Analyzing trace with hash 615768014, now seen corresponding path program 3 times [2024-06-04 14:51:33,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:33,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660308172] [2024-06-04 14:51:33,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:33,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:35,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:51:35,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:35,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660308172] [2024-06-04 14:51:35,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660308172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:35,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:35,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:51:35,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172206901] [2024-06-04 14:51:35,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:35,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:51:35,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:35,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:51:35,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:51:35,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:51:35,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 285 transitions, 2780 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:51:35,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:35,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:51:35,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:36,260 INFO L124 PetriNetUnfolderBase]: 2784/4433 cut-off events. [2024-06-04 14:51:36,260 INFO L125 PetriNetUnfolderBase]: For 643657/643657 co-relation queries the response was YES. [2024-06-04 14:51:36,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44198 conditions, 4433 events. 2784/4433 cut-off events. For 643657/643657 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 25412 event pairs, 613 based on Foata normal form. 1/4423 useless extension candidates. Maximal degree in co-relation 44088. Up to 4047 conditions per place. [2024-06-04 14:51:36,310 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 246 selfloop transitions, 31 changer transitions 0/304 dead transitions. [2024-06-04 14:51:36,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 304 transitions, 3461 flow [2024-06-04 14:51:36,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:51:36,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:51:36,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-04 14:51:36,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:51:36,311 INFO L175 Difference]: Start difference. First operand has 244 places, 285 transitions, 2780 flow. Second operand 8 states and 152 transitions. [2024-06-04 14:51:36,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 304 transitions, 3461 flow [2024-06-04 14:51:36,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 304 transitions, 3369 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-04 14:51:36,881 INFO L231 Difference]: Finished difference. Result has 246 places, 288 transitions, 2846 flow [2024-06-04 14:51:36,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2688, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2846, PETRI_PLACES=246, PETRI_TRANSITIONS=288} [2024-06-04 14:51:36,881 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 201 predicate places. [2024-06-04 14:51:36,882 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 288 transitions, 2846 flow [2024-06-04 14:51:36,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:51:36,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:36,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:36,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-04 14:51:36,882 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:51:36,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:36,882 INFO L85 PathProgramCache]: Analyzing trace with hash -658451809, now seen corresponding path program 3 times [2024-06-04 14:51:36,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:36,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173931475] [2024-06-04 14:51:36,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:36,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:37,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:51:37,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:37,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173931475] [2024-06-04 14:51:37,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173931475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:37,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:37,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:51:37,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194560480] [2024-06-04 14:51:37,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:37,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:51:37,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:37,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:51:37,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:51:37,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:51:37,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 288 transitions, 2846 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:37,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:37,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:51:37,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:38,828 INFO L124 PetriNetUnfolderBase]: 2792/4426 cut-off events. [2024-06-04 14:51:38,828 INFO L125 PetriNetUnfolderBase]: For 649071/649079 co-relation queries the response was YES. [2024-06-04 14:51:38,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44372 conditions, 4426 events. 2792/4426 cut-off events. For 649071/649079 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 25137 event pairs, 604 based on Foata normal form. 8/4410 useless extension candidates. Maximal degree in co-relation 44261. Up to 4037 conditions per place. [2024-06-04 14:51:38,881 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 253 selfloop transitions, 19 changer transitions 0/305 dead transitions. [2024-06-04 14:51:38,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 305 transitions, 3449 flow [2024-06-04 14:51:38,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:51:38,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:51:38,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-04 14:51:38,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4448051948051948 [2024-06-04 14:51:38,882 INFO L175 Difference]: Start difference. First operand has 246 places, 288 transitions, 2846 flow. Second operand 7 states and 137 transitions. [2024-06-04 14:51:38,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 305 transitions, 3449 flow [2024-06-04 14:51:39,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 305 transitions, 3273 flow, removed 59 selfloop flow, removed 6 redundant places. [2024-06-04 14:51:39,446 INFO L231 Difference]: Finished difference. Result has 247 places, 288 transitions, 2714 flow [2024-06-04 14:51:39,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2670, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2714, PETRI_PLACES=247, PETRI_TRANSITIONS=288} [2024-06-04 14:51:39,447 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 202 predicate places. [2024-06-04 14:51:39,447 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 288 transitions, 2714 flow [2024-06-04 14:51:39,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:39,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:39,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:39,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-04 14:51:39,448 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:51:39,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:39,448 INFO L85 PathProgramCache]: Analyzing trace with hash -645119329, now seen corresponding path program 4 times [2024-06-04 14:51:39,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:39,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610487754] [2024-06-04 14:51:39,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:39,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:40,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:51:40,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:40,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610487754] [2024-06-04 14:51:40,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610487754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:40,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:40,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:51:40,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449848074] [2024-06-04 14:51:40,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:40,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:51:40,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:40,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:51:40,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:51:40,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:51:40,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 288 transitions, 2714 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:40,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:40,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:51:40,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:41,460 INFO L124 PetriNetUnfolderBase]: 2798/4436 cut-off events. [2024-06-04 14:51:41,460 INFO L125 PetriNetUnfolderBase]: For 671450/671458 co-relation queries the response was YES. [2024-06-04 14:51:41,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44848 conditions, 4436 events. 2798/4436 cut-off events. For 671450/671458 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 25246 event pairs, 604 based on Foata normal form. 8/4411 useless extension candidates. Maximal degree in co-relation 44736. Up to 4027 conditions per place. [2024-06-04 14:51:41,512 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 246 selfloop transitions, 27 changer transitions 0/306 dead transitions. [2024-06-04 14:51:41,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 306 transitions, 3411 flow [2024-06-04 14:51:41,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:51:41,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:51:41,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-04 14:51:41,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-06-04 14:51:41,513 INFO L175 Difference]: Start difference. First operand has 247 places, 288 transitions, 2714 flow. Second operand 7 states and 136 transitions. [2024-06-04 14:51:41,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 306 transitions, 3411 flow [2024-06-04 14:51:42,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 306 transitions, 3331 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-04 14:51:42,119 INFO L231 Difference]: Finished difference. Result has 246 places, 291 transitions, 2784 flow [2024-06-04 14:51:42,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2634, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2784, PETRI_PLACES=246, PETRI_TRANSITIONS=291} [2024-06-04 14:51:42,120 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 201 predicate places. [2024-06-04 14:51:42,120 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 291 transitions, 2784 flow [2024-06-04 14:51:42,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:42,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:42,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:42,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-04 14:51:42,121 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:51:42,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:42,121 INFO L85 PathProgramCache]: Analyzing trace with hash 550990495, now seen corresponding path program 5 times [2024-06-04 14:51:42,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:42,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874533097] [2024-06-04 14:51:42,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:42,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:43,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:51:43,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:43,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874533097] [2024-06-04 14:51:43,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874533097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:43,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:43,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:51:43,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083337086] [2024-06-04 14:51:43,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:43,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:51:43,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:43,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:51:43,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:51:43,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:51:43,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 291 transitions, 2784 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:43,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:43,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:51:43,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:44,014 INFO L124 PetriNetUnfolderBase]: 2816/4465 cut-off events. [2024-06-04 14:51:44,015 INFO L125 PetriNetUnfolderBase]: For 693315/693325 co-relation queries the response was YES. [2024-06-04 14:51:44,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45815 conditions, 4465 events. 2816/4465 cut-off events. For 693315/693325 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 25470 event pairs, 619 based on Foata normal form. 10/4442 useless extension candidates. Maximal degree in co-relation 45702. Up to 4014 conditions per place. [2024-06-04 14:51:44,068 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 234 selfloop transitions, 44 changer transitions 0/311 dead transitions. [2024-06-04 14:51:44,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 311 transitions, 3751 flow [2024-06-04 14:51:44,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:51:44,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:51:44,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-04 14:51:44,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4448051948051948 [2024-06-04 14:51:44,069 INFO L175 Difference]: Start difference. First operand has 246 places, 291 transitions, 2784 flow. Second operand 7 states and 137 transitions. [2024-06-04 14:51:44,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 311 transitions, 3751 flow [2024-06-04 14:51:44,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 311 transitions, 3627 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-04 14:51:44,860 INFO L231 Difference]: Finished difference. Result has 248 places, 297 transitions, 2940 flow [2024-06-04 14:51:44,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2660, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2940, PETRI_PLACES=248, PETRI_TRANSITIONS=297} [2024-06-04 14:51:44,860 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 203 predicate places. [2024-06-04 14:51:44,860 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 297 transitions, 2940 flow [2024-06-04 14:51:44,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:44,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:44,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:44,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-04 14:51:44,861 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:51:44,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:44,861 INFO L85 PathProgramCache]: Analyzing trace with hash 359031675, now seen corresponding path program 6 times [2024-06-04 14:51:44,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:44,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631523869] [2024-06-04 14:51:44,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:44,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:45,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:51:45,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:45,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631523869] [2024-06-04 14:51:45,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631523869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:45,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:45,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:51:45,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697805410] [2024-06-04 14:51:45,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:45,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:51:45,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:45,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:51:45,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:51:45,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:51:45,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 297 transitions, 2940 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:45,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:45,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:51:45,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:46,889 INFO L124 PetriNetUnfolderBase]: 2810/4457 cut-off events. [2024-06-04 14:51:46,889 INFO L125 PetriNetUnfolderBase]: For 706551/706561 co-relation queries the response was YES. [2024-06-04 14:51:46,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46066 conditions, 4457 events. 2810/4457 cut-off events. For 706551/706561 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 25450 event pairs, 616 based on Foata normal form. 10/4434 useless extension candidates. Maximal degree in co-relation 45952. Up to 4009 conditions per place. [2024-06-04 14:51:46,945 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 233 selfloop transitions, 44 changer transitions 0/310 dead transitions. [2024-06-04 14:51:46,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 310 transitions, 3569 flow [2024-06-04 14:51:46,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:51:46,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:51:46,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-04 14:51:46,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-06-04 14:51:46,946 INFO L175 Difference]: Start difference. First operand has 248 places, 297 transitions, 2940 flow. Second operand 7 states and 136 transitions. [2024-06-04 14:51:46,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 310 transitions, 3569 flow [2024-06-04 14:51:47,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 310 transitions, 3375 flow, removed 78 selfloop flow, removed 3 redundant places. [2024-06-04 14:51:47,729 INFO L231 Difference]: Finished difference. Result has 252 places, 297 transitions, 2840 flow [2024-06-04 14:51:47,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2746, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2840, PETRI_PLACES=252, PETRI_TRANSITIONS=297} [2024-06-04 14:51:47,729 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 207 predicate places. [2024-06-04 14:51:47,729 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 297 transitions, 2840 flow [2024-06-04 14:51:47,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:47,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:47,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:47,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-04 14:51:47,730 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:51:47,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:47,731 INFO L85 PathProgramCache]: Analyzing trace with hash -374485998, now seen corresponding path program 11 times [2024-06-04 14:51:47,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:47,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934528850] [2024-06-04 14:51:47,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:47,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:48,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:51:48,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:48,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934528850] [2024-06-04 14:51:48,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934528850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:48,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:48,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:51:48,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136646040] [2024-06-04 14:51:48,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:48,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:51:48,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:48,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:51:48,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:51:49,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:51:49,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 297 transitions, 2840 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:49,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:49,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:51:49,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:50,424 INFO L124 PetriNetUnfolderBase]: 3001/4692 cut-off events. [2024-06-04 14:51:50,425 INFO L125 PetriNetUnfolderBase]: For 730587/730595 co-relation queries the response was YES. [2024-06-04 14:51:50,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47716 conditions, 4692 events. 3001/4692 cut-off events. For 730587/730595 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 26303 event pairs, 648 based on Foata normal form. 7/4696 useless extension candidates. Maximal degree in co-relation 47600. Up to 4167 conditions per place. [2024-06-04 14:51:50,483 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 250 selfloop transitions, 87 changer transitions 0/342 dead transitions. [2024-06-04 14:51:50,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 342 transitions, 4105 flow [2024-06-04 14:51:50,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:51:50,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:51:50,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-04 14:51:50,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2024-06-04 14:51:50,484 INFO L175 Difference]: Start difference. First operand has 252 places, 297 transitions, 2840 flow. Second operand 10 states and 196 transitions. [2024-06-04 14:51:50,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 342 transitions, 4105 flow [2024-06-04 14:51:51,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 342 transitions, 3979 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-04 14:51:51,344 INFO L231 Difference]: Finished difference. Result has 256 places, 307 transitions, 3174 flow [2024-06-04 14:51:51,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2714, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3174, PETRI_PLACES=256, PETRI_TRANSITIONS=307} [2024-06-04 14:51:51,345 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 211 predicate places. [2024-06-04 14:51:51,345 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 307 transitions, 3174 flow [2024-06-04 14:51:51,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:51,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:51,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:51,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-04 14:51:51,345 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:51:51,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:51,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1928960692, now seen corresponding path program 12 times [2024-06-04 14:51:51,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:51,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862068909] [2024-06-04 14:51:51,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:51,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:52,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:51:52,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:52,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862068909] [2024-06-04 14:51:52,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862068909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:52,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:52,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:51:52,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498072984] [2024-06-04 14:51:52,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:52,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:51:52,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:52,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:51:52,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:51:52,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:51:52,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 307 transitions, 3174 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:52,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:52,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:51:52,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:53,952 INFO L124 PetriNetUnfolderBase]: 2993/4700 cut-off events. [2024-06-04 14:51:53,952 INFO L125 PetriNetUnfolderBase]: For 742888/742896 co-relation queries the response was YES. [2024-06-04 14:51:53,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48148 conditions, 4700 events. 2993/4700 cut-off events. For 742888/742896 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 26529 event pairs, 671 based on Foata normal form. 7/4704 useless extension candidates. Maximal degree in co-relation 48031. Up to 4202 conditions per place. [2024-06-04 14:51:54,008 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 250 selfloop transitions, 84 changer transitions 0/339 dead transitions. [2024-06-04 14:51:54,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 339 transitions, 3924 flow [2024-06-04 14:51:54,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:51:54,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:51:54,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-04 14:51:54,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2024-06-04 14:51:54,010 INFO L175 Difference]: Start difference. First operand has 256 places, 307 transitions, 3174 flow. Second operand 10 states and 192 transitions. [2024-06-04 14:51:54,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 339 transitions, 3924 flow [2024-06-04 14:51:54,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 339 transitions, 3716 flow, removed 96 selfloop flow, removed 3 redundant places. [2024-06-04 14:51:54,990 INFO L231 Difference]: Finished difference. Result has 263 places, 307 transitions, 3141 flow [2024-06-04 14:51:54,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2966, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3141, PETRI_PLACES=263, PETRI_TRANSITIONS=307} [2024-06-04 14:51:54,990 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 218 predicate places. [2024-06-04 14:51:54,991 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 307 transitions, 3141 flow [2024-06-04 14:51:54,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:54,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:54,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:54,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-04 14:51:54,991 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:51:54,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:54,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1230968396, now seen corresponding path program 13 times [2024-06-04 14:51:54,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:54,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919261766] [2024-06-04 14:51:54,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:54,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:55,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:56,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:51:56,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:56,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919261766] [2024-06-04 14:51:56,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919261766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:56,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:56,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:51:56,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391857788] [2024-06-04 14:51:56,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:56,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:51:56,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:56,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:51:56,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:51:56,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:51:56,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 307 transitions, 3141 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:56,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:56,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:51:56,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:57,636 INFO L124 PetriNetUnfolderBase]: 3010/4717 cut-off events. [2024-06-04 14:51:57,636 INFO L125 PetriNetUnfolderBase]: For 754780/754788 co-relation queries the response was YES. [2024-06-04 14:51:57,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48078 conditions, 4717 events. 3010/4717 cut-off events. For 754780/754788 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 26549 event pairs, 656 based on Foata normal form. 7/4721 useless extension candidates. Maximal degree in co-relation 47959. Up to 4124 conditions per place. [2024-06-04 14:51:57,693 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 247 selfloop transitions, 91 changer transitions 0/343 dead transitions. [2024-06-04 14:51:57,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 343 transitions, 4003 flow [2024-06-04 14:51:57,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:51:57,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:51:57,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-04 14:51:57,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2024-06-04 14:51:57,694 INFO L175 Difference]: Start difference. First operand has 263 places, 307 transitions, 3141 flow. Second operand 10 states and 196 transitions. [2024-06-04 14:51:57,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 343 transitions, 4003 flow [2024-06-04 14:51:58,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 343 transitions, 3828 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-04 14:51:58,455 INFO L231 Difference]: Finished difference. Result has 264 places, 309 transitions, 3259 flow [2024-06-04 14:51:58,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2966, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3259, PETRI_PLACES=264, PETRI_TRANSITIONS=309} [2024-06-04 14:51:58,455 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 219 predicate places. [2024-06-04 14:51:58,456 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 309 transitions, 3259 flow [2024-06-04 14:51:58,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:58,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:58,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:58,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-04 14:51:58,456 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:51:58,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:58,456 INFO L85 PathProgramCache]: Analyzing trace with hash -888669806, now seen corresponding path program 14 times [2024-06-04 14:51:58,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:58,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383176179] [2024-06-04 14:51:58,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:58,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:59,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:51:59,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:59,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383176179] [2024-06-04 14:51:59,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383176179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:59,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:59,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:51:59,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126946115] [2024-06-04 14:51:59,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:59,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:51:59,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:59,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:51:59,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:51:59,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:51:59,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 309 transitions, 3259 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:59,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:59,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:51:59,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:52:01,000 INFO L124 PetriNetUnfolderBase]: 3027/4734 cut-off events. [2024-06-04 14:52:01,000 INFO L125 PetriNetUnfolderBase]: For 777273/777281 co-relation queries the response was YES. [2024-06-04 14:52:01,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48823 conditions, 4734 events. 3027/4734 cut-off events. For 777273/777281 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 26650 event pairs, 548 based on Foata normal form. 7/4738 useless extension candidates. Maximal degree in co-relation 48703. Up to 3638 conditions per place. [2024-06-04 14:52:01,059 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 218 selfloop transitions, 127 changer transitions 0/350 dead transitions. [2024-06-04 14:52:01,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 350 transitions, 4519 flow [2024-06-04 14:52:01,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:52:01,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:52:01,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-04 14:52:01,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44772727272727275 [2024-06-04 14:52:01,061 INFO L175 Difference]: Start difference. First operand has 264 places, 309 transitions, 3259 flow. Second operand 10 states and 197 transitions. [2024-06-04 14:52:01,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 350 transitions, 4519 flow [2024-06-04 14:52:01,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 350 transitions, 4244 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-04 14:52:01,828 INFO L231 Difference]: Finished difference. Result has 266 places, 313 transitions, 3457 flow [2024-06-04 14:52:01,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2984, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3457, PETRI_PLACES=266, PETRI_TRANSITIONS=313} [2024-06-04 14:52:01,828 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 221 predicate places. [2024-06-04 14:52:01,828 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 313 transitions, 3457 flow [2024-06-04 14:52:01,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:01,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:01,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:52:01,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-04 14:52:01,829 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:52:01,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:01,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1705434788, now seen corresponding path program 6 times [2024-06-04 14:52:01,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:01,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505003646] [2024-06-04 14:52:01,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:01,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:02,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:52:02,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:02,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505003646] [2024-06-04 14:52:02,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505003646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:02,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:02,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:52:02,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482979072] [2024-06-04 14:52:02,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:02,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:52:02,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:02,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:52:02,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:52:03,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:52:03,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 313 transitions, 3457 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:03,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:03,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:52:03,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:52:04,514 INFO L124 PetriNetUnfolderBase]: 3052/4780 cut-off events. [2024-06-04 14:52:04,514 INFO L125 PetriNetUnfolderBase]: For 821901/821907 co-relation queries the response was YES. [2024-06-04 14:52:04,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49015 conditions, 4780 events. 3052/4780 cut-off events. For 821901/821907 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 26958 event pairs, 640 based on Foata normal form. 21/4797 useless extension candidates. Maximal degree in co-relation 48894. Up to 4056 conditions per place. [2024-06-04 14:52:04,577 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 260 selfloop transitions, 87 changer transitions 0/352 dead transitions. [2024-06-04 14:52:04,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 352 transitions, 4401 flow [2024-06-04 14:52:04,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:52:04,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:52:04,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-04 14:52:04,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45227272727272727 [2024-06-04 14:52:04,578 INFO L175 Difference]: Start difference. First operand has 266 places, 313 transitions, 3457 flow. Second operand 10 states and 199 transitions. [2024-06-04 14:52:04,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 352 transitions, 4401 flow [2024-06-04 14:52:05,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 352 transitions, 4177 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-06-04 14:52:05,577 INFO L231 Difference]: Finished difference. Result has 270 places, 314 transitions, 3496 flow [2024-06-04 14:52:05,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3237, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3496, PETRI_PLACES=270, PETRI_TRANSITIONS=314} [2024-06-04 14:52:05,578 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 225 predicate places. [2024-06-04 14:52:05,578 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 314 transitions, 3496 flow [2024-06-04 14:52:05,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:05,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:05,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:52:05,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-04 14:52:05,578 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:52:05,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:05,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1477348940, now seen corresponding path program 15 times [2024-06-04 14:52:05,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:05,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829561761] [2024-06-04 14:52:05,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:05,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:06,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:52:06,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:06,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829561761] [2024-06-04 14:52:06,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829561761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:06,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:06,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:52:06,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349989322] [2024-06-04 14:52:06,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:06,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:52:06,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:06,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:52:06,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:52:06,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:52:06,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 314 transitions, 3496 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:06,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:06,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:52:06,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:52:08,212 INFO L124 PetriNetUnfolderBase]: 3080/4829 cut-off events. [2024-06-04 14:52:08,212 INFO L125 PetriNetUnfolderBase]: For 795011/795019 co-relation queries the response was YES. [2024-06-04 14:52:08,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49398 conditions, 4829 events. 3080/4829 cut-off events. For 795011/795019 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 27267 event pairs, 667 based on Foata normal form. 7/4833 useless extension candidates. Maximal degree in co-relation 49275. Up to 4342 conditions per place. [2024-06-04 14:52:08,274 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 265 selfloop transitions, 81 changer transitions 0/351 dead transitions. [2024-06-04 14:52:08,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 351 transitions, 4403 flow [2024-06-04 14:52:08,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:52:08,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:52:08,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-04 14:52:08,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-04 14:52:08,276 INFO L175 Difference]: Start difference. First operand has 270 places, 314 transitions, 3496 flow. Second operand 10 states and 195 transitions. [2024-06-04 14:52:08,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 351 transitions, 4403 flow [2024-06-04 14:52:09,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 351 transitions, 4166 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-04 14:52:09,549 INFO L231 Difference]: Finished difference. Result has 272 places, 319 transitions, 3565 flow [2024-06-04 14:52:09,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3265, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3565, PETRI_PLACES=272, PETRI_TRANSITIONS=319} [2024-06-04 14:52:09,549 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 227 predicate places. [2024-06-04 14:52:09,549 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 319 transitions, 3565 flow [2024-06-04 14:52:09,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:09,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:09,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:52:09,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-04 14:52:09,550 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:52:09,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:09,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1477109930, now seen corresponding path program 16 times [2024-06-04 14:52:09,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:09,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798041523] [2024-06-04 14:52:09,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:09,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:09,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:10,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:52:10,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:10,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798041523] [2024-06-04 14:52:10,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798041523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:10,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:10,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:52:10,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398154306] [2024-06-04 14:52:10,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:10,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:52:10,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:10,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:52:10,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:52:10,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:52:10,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 319 transitions, 3565 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:10,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:10,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:52:10,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:52:12,188 INFO L124 PetriNetUnfolderBase]: 3097/4861 cut-off events. [2024-06-04 14:52:12,188 INFO L125 PetriNetUnfolderBase]: For 803044/803052 co-relation queries the response was YES. [2024-06-04 14:52:12,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49323 conditions, 4861 events. 3097/4861 cut-off events. For 803044/803052 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 27603 event pairs, 677 based on Foata normal form. 7/4865 useless extension candidates. Maximal degree in co-relation 49199. Up to 4328 conditions per place. [2024-06-04 14:52:12,246 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 265 selfloop transitions, 84 changer transitions 0/354 dead transitions. [2024-06-04 14:52:12,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 354 transitions, 4447 flow [2024-06-04 14:52:12,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:52:12,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:52:12,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-04 14:52:12,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44772727272727275 [2024-06-04 14:52:12,248 INFO L175 Difference]: Start difference. First operand has 272 places, 319 transitions, 3565 flow. Second operand 10 states and 197 transitions. [2024-06-04 14:52:12,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 354 transitions, 4447 flow [2024-06-04 14:52:13,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 354 transitions, 4170 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-04 14:52:13,578 INFO L231 Difference]: Finished difference. Result has 275 places, 321 transitions, 3567 flow [2024-06-04 14:52:13,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3288, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3567, PETRI_PLACES=275, PETRI_TRANSITIONS=321} [2024-06-04 14:52:13,579 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 230 predicate places. [2024-06-04 14:52:13,579 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 321 transitions, 3567 flow [2024-06-04 14:52:13,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:13,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:13,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:52:13,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-04 14:52:13,579 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:52:13,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:13,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1468778060, now seen corresponding path program 17 times [2024-06-04 14:52:13,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:13,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298266191] [2024-06-04 14:52:13,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:13,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:14,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:52:14,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:14,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298266191] [2024-06-04 14:52:14,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298266191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:14,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:14,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:52:14,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603325562] [2024-06-04 14:52:14,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:14,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:52:14,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:14,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:52:14,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:52:14,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:52:14,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 321 transitions, 3567 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:14,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:14,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:52:14,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:52:16,085 INFO L124 PetriNetUnfolderBase]: 3114/4888 cut-off events. [2024-06-04 14:52:16,085 INFO L125 PetriNetUnfolderBase]: For 821501/821509 co-relation queries the response was YES. [2024-06-04 14:52:16,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49653 conditions, 4888 events. 3114/4888 cut-off events. For 821501/821509 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 27745 event pairs, 672 based on Foata normal form. 7/4892 useless extension candidates. Maximal degree in co-relation 49529. Up to 4239 conditions per place. [2024-06-04 14:52:16,142 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 263 selfloop transitions, 91 changer transitions 0/359 dead transitions. [2024-06-04 14:52:16,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 359 transitions, 4755 flow [2024-06-04 14:52:16,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:52:16,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:52:16,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-04 14:52:16,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45227272727272727 [2024-06-04 14:52:16,144 INFO L175 Difference]: Start difference. First operand has 275 places, 321 transitions, 3567 flow. Second operand 10 states and 199 transitions. [2024-06-04 14:52:16,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 359 transitions, 4755 flow [2024-06-04 14:52:17,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 359 transitions, 4498 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-06-04 14:52:17,259 INFO L231 Difference]: Finished difference. Result has 277 places, 323 transitions, 3603 flow [2024-06-04 14:52:17,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3310, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3603, PETRI_PLACES=277, PETRI_TRANSITIONS=323} [2024-06-04 14:52:17,260 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 232 predicate places. [2024-06-04 14:52:17,260 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 323 transitions, 3603 flow [2024-06-04 14:52:17,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:17,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:17,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:52:17,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-04 14:52:17,260 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:52:17,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:17,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1698763340, now seen corresponding path program 18 times [2024-06-04 14:52:17,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:17,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236582010] [2024-06-04 14:52:17,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:17,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:18,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:52:18,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:18,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236582010] [2024-06-04 14:52:18,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236582010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:18,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:18,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:52:18,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56120629] [2024-06-04 14:52:18,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:18,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:52:18,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:18,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:52:18,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:52:18,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:52:18,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 323 transitions, 3603 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:18,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:18,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:52:18,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:52:19,898 INFO L124 PetriNetUnfolderBase]: 3142/4926 cut-off events. [2024-06-04 14:52:19,898 INFO L125 PetriNetUnfolderBase]: For 840299/840307 co-relation queries the response was YES. [2024-06-04 14:52:19,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50157 conditions, 4926 events. 3142/4926 cut-off events. For 840299/840307 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 27919 event pairs, 677 based on Foata normal form. 7/4930 useless extension candidates. Maximal degree in co-relation 50032. Up to 4435 conditions per place. [2024-06-04 14:52:19,960 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 270 selfloop transitions, 85 changer transitions 0/360 dead transitions. [2024-06-04 14:52:19,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 360 transitions, 4540 flow [2024-06-04 14:52:19,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:52:19,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:52:19,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-04 14:52:19,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409090909090909 [2024-06-04 14:52:19,962 INFO L175 Difference]: Start difference. First operand has 277 places, 323 transitions, 3603 flow. Second operand 10 states and 194 transitions. [2024-06-04 14:52:19,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 360 transitions, 4540 flow [2024-06-04 14:52:21,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 360 transitions, 4033 flow, removed 60 selfloop flow, removed 10 redundant places. [2024-06-04 14:52:21,070 INFO L231 Difference]: Finished difference. Result has 277 places, 328 transitions, 3422 flow [2024-06-04 14:52:21,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3124, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3422, PETRI_PLACES=277, PETRI_TRANSITIONS=328} [2024-06-04 14:52:21,071 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 232 predicate places. [2024-06-04 14:52:21,071 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 328 transitions, 3422 flow [2024-06-04 14:52:21,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:21,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:21,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:52:21,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-04 14:52:21,072 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:52:21,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:21,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1698754970, now seen corresponding path program 19 times [2024-06-04 14:52:21,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:21,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462229922] [2024-06-04 14:52:21,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:21,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:22,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:52:22,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:22,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462229922] [2024-06-04 14:52:22,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462229922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:22,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:22,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:52:22,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720580863] [2024-06-04 14:52:22,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:22,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:52:22,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:22,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:52:22,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:52:22,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:52:22,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 328 transitions, 3422 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:22,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:22,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:52:22,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:52:23,758 INFO L124 PetriNetUnfolderBase]: 3159/4953 cut-off events. [2024-06-04 14:52:23,758 INFO L125 PetriNetUnfolderBase]: For 856329/856337 co-relation queries the response was YES. [2024-06-04 14:52:23,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49688 conditions, 4953 events. 3159/4953 cut-off events. For 856329/856337 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 28117 event pairs, 672 based on Foata normal form. 7/4957 useless extension candidates. Maximal degree in co-relation 49564. Up to 4397 conditions per place. [2024-06-04 14:52:23,817 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 270 selfloop transitions, 90 changer transitions 0/365 dead transitions. [2024-06-04 14:52:23,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 365 transitions, 4620 flow [2024-06-04 14:52:23,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:52:23,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:52:23,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-04 14:52:23,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44772727272727275 [2024-06-04 14:52:23,818 INFO L175 Difference]: Start difference. First operand has 277 places, 328 transitions, 3422 flow. Second operand 10 states and 197 transitions. [2024-06-04 14:52:23,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 365 transitions, 4620 flow [2024-06-04 14:52:25,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 365 transitions, 4385 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-04 14:52:25,128 INFO L231 Difference]: Finished difference. Result has 281 places, 330 transitions, 3470 flow [2024-06-04 14:52:25,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3187, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3470, PETRI_PLACES=281, PETRI_TRANSITIONS=330} [2024-06-04 14:52:25,129 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 236 predicate places. [2024-06-04 14:52:25,129 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 330 transitions, 3470 flow [2024-06-04 14:52:25,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:25,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:25,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:52:25,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-04 14:52:25,130 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:52:25,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:25,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1705250090, now seen corresponding path program 20 times [2024-06-04 14:52:25,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:25,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577737652] [2024-06-04 14:52:25,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:25,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:26,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:52:26,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:26,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577737652] [2024-06-04 14:52:26,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577737652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:26,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:26,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:52:26,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871878597] [2024-06-04 14:52:26,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:26,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:52:26,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:26,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:52:26,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:52:26,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:52:26,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 330 transitions, 3470 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:26,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:26,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:52:26,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:52:27,846 INFO L124 PetriNetUnfolderBase]: 3151/4941 cut-off events. [2024-06-04 14:52:27,846 INFO L125 PetriNetUnfolderBase]: For 860836/860844 co-relation queries the response was YES. [2024-06-04 14:52:27,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49301 conditions, 4941 events. 3151/4941 cut-off events. For 860836/860844 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 27985 event pairs, 675 based on Foata normal form. 7/4945 useless extension candidates. Maximal degree in co-relation 49176. Up to 4450 conditions per place. [2024-06-04 14:52:27,907 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 270 selfloop transitions, 87 changer transitions 0/362 dead transitions. [2024-06-04 14:52:27,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 362 transitions, 4266 flow [2024-06-04 14:52:27,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:52:27,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:52:27,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-04 14:52:27,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43863636363636366 [2024-06-04 14:52:27,909 INFO L175 Difference]: Start difference. First operand has 281 places, 330 transitions, 3470 flow. Second operand 10 states and 193 transitions. [2024-06-04 14:52:27,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 362 transitions, 4266 flow [2024-06-04 14:52:29,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 362 transitions, 3908 flow, removed 85 selfloop flow, removed 8 redundant places. [2024-06-04 14:52:29,411 INFO L231 Difference]: Finished difference. Result has 283 places, 330 transitions, 3293 flow [2024-06-04 14:52:29,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3112, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3293, PETRI_PLACES=283, PETRI_TRANSITIONS=330} [2024-06-04 14:52:29,411 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 238 predicate places. [2024-06-04 14:52:29,411 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 330 transitions, 3293 flow [2024-06-04 14:52:29,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:29,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:29,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:52:29,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-04 14:52:29,412 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:52:29,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:29,413 INFO L85 PathProgramCache]: Analyzing trace with hash 359025723, now seen corresponding path program 4 times [2024-06-04 14:52:29,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:29,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270427679] [2024-06-04 14:52:29,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:29,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:30,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:52:30,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:30,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270427679] [2024-06-04 14:52:30,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270427679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:30,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:30,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:52:30,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643008833] [2024-06-04 14:52:30,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:30,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:52:30,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:30,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:52:30,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:52:30,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:52:30,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 330 transitions, 3293 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:52:30,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:30,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:52:30,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:52:31,436 INFO L124 PetriNetUnfolderBase]: 2991/4785 cut-off events. [2024-06-04 14:52:31,436 INFO L125 PetriNetUnfolderBase]: For 866956/866962 co-relation queries the response was YES. [2024-06-04 14:52:31,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47643 conditions, 4785 events. 2991/4785 cut-off events. For 866956/866962 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 27962 event pairs, 679 based on Foata normal form. 3/4775 useless extension candidates. Maximal degree in co-relation 47517. Up to 4270 conditions per place. [2024-06-04 14:52:31,497 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 263 selfloop transitions, 40 changer transitions 0/344 dead transitions. [2024-06-04 14:52:31,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 344 transitions, 4017 flow [2024-06-04 14:52:31,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:52:31,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:52:31,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-04 14:52:31,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42329545454545453 [2024-06-04 14:52:31,498 INFO L175 Difference]: Start difference. First operand has 283 places, 330 transitions, 3293 flow. Second operand 8 states and 149 transitions. [2024-06-04 14:52:31,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 344 transitions, 4017 flow [2024-06-04 14:52:32,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 344 transitions, 3805 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 14:52:32,683 INFO L231 Difference]: Finished difference. Result has 281 places, 333 transitions, 3263 flow [2024-06-04 14:52:32,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3081, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3263, PETRI_PLACES=281, PETRI_TRANSITIONS=333} [2024-06-04 14:52:32,683 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 236 predicate places. [2024-06-04 14:52:32,684 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 333 transitions, 3263 flow [2024-06-04 14:52:32,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:52:32,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:32,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:52:32,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-04 14:52:32,684 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:52:32,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:32,685 INFO L85 PathProgramCache]: Analyzing trace with hash 543366386, now seen corresponding path program 4 times [2024-06-04 14:52:32,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:32,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528480055] [2024-06-04 14:52:32,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:32,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:33,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:52:33,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:33,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528480055] [2024-06-04 14:52:33,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528480055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:33,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:33,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:52:33,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137160760] [2024-06-04 14:52:33,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:33,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:52:33,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:33,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:52:33,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:52:33,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:52:33,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 333 transitions, 3263 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:52:33,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:33,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:52:33,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:52:34,977 INFO L124 PetriNetUnfolderBase]: 2992/4781 cut-off events. [2024-06-04 14:52:34,977 INFO L125 PetriNetUnfolderBase]: For 882391/882399 co-relation queries the response was YES. [2024-06-04 14:52:35,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47966 conditions, 4781 events. 2992/4781 cut-off events. For 882391/882399 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 27894 event pairs, 663 based on Foata normal form. 4/4773 useless extension candidates. Maximal degree in co-relation 47840. Up to 4300 conditions per place. [2024-06-04 14:52:35,034 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 275 selfloop transitions, 30 changer transitions 0/346 dead transitions. [2024-06-04 14:52:35,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 346 transitions, 3989 flow [2024-06-04 14:52:35,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:52:35,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:52:35,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-04 14:52:35,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-04 14:52:35,035 INFO L175 Difference]: Start difference. First operand has 281 places, 333 transitions, 3263 flow. Second operand 8 states and 147 transitions. [2024-06-04 14:52:35,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 346 transitions, 3989 flow [2024-06-04 14:52:35,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 346 transitions, 3829 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-04 14:52:35,971 INFO L231 Difference]: Finished difference. Result has 283 places, 336 transitions, 3267 flow [2024-06-04 14:52:35,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3103, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3267, PETRI_PLACES=283, PETRI_TRANSITIONS=336} [2024-06-04 14:52:35,972 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 238 predicate places. [2024-06-04 14:52:35,972 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 336 transitions, 3267 flow [2024-06-04 14:52:35,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:52:35,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:35,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:52:35,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-04 14:52:35,973 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:52:35,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:35,973 INFO L85 PathProgramCache]: Analyzing trace with hash 543379871, now seen corresponding path program 2 times [2024-06-04 14:52:35,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:35,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441355129] [2024-06-04 14:52:35,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:35,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:37,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:52:37,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:37,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441355129] [2024-06-04 14:52:37,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441355129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:37,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:37,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:52:37,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103544374] [2024-06-04 14:52:37,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:37,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:52:37,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:37,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:52:37,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:52:37,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:52:37,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 336 transitions, 3267 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:37,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:37,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:52:37,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:52:38,264 INFO L124 PetriNetUnfolderBase]: 2767/4529 cut-off events. [2024-06-04 14:52:38,264 INFO L125 PetriNetUnfolderBase]: For 900462/900470 co-relation queries the response was YES. [2024-06-04 14:52:38,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47130 conditions, 4529 events. 2767/4529 cut-off events. For 900462/900470 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 27244 event pairs, 606 based on Foata normal form. 8/4513 useless extension candidates. Maximal degree in co-relation 47003. Up to 3903 conditions per place. [2024-06-04 14:52:38,323 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 259 selfloop transitions, 22 changer transitions 0/351 dead transitions. [2024-06-04 14:52:38,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 351 transitions, 3948 flow [2024-06-04 14:52:38,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:52:38,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:52:38,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-04 14:52:38,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-04 14:52:38,324 INFO L175 Difference]: Start difference. First operand has 283 places, 336 transitions, 3267 flow. Second operand 8 states and 153 transitions. [2024-06-04 14:52:38,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 351 transitions, 3948 flow [2024-06-04 14:52:39,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 351 transitions, 3806 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-04 14:52:39,411 INFO L231 Difference]: Finished difference. Result has 285 places, 339 transitions, 3265 flow [2024-06-04 14:52:39,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3125, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3265, PETRI_PLACES=285, PETRI_TRANSITIONS=339} [2024-06-04 14:52:39,411 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 240 predicate places. [2024-06-04 14:52:39,411 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 339 transitions, 3265 flow [2024-06-04 14:52:39,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:39,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:39,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:52:39,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-04 14:52:39,412 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:52:39,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:39,412 INFO L85 PathProgramCache]: Analyzing trace with hash 373786621, now seen corresponding path program 3 times [2024-06-04 14:52:39,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:39,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042644183] [2024-06-04 14:52:39,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:39,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:40,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:52:40,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:40,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042644183] [2024-06-04 14:52:40,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042644183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:40,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:40,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:52:40,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129193376] [2024-06-04 14:52:40,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:40,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:52:40,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:40,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:52:40,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:52:40,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:52:40,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 339 transitions, 3265 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:40,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:40,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:52:40,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:52:42,024 INFO L124 PetriNetUnfolderBase]: 2777/4541 cut-off events. [2024-06-04 14:52:42,024 INFO L125 PetriNetUnfolderBase]: For 918410/918410 co-relation queries the response was YES. [2024-06-04 14:52:42,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47717 conditions, 4541 events. 2777/4541 cut-off events. For 918410/918410 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 27301 event pairs, 597 based on Foata normal form. 2/4520 useless extension candidates. Maximal degree in co-relation 47589. Up to 3930 conditions per place. [2024-06-04 14:52:42,111 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 268 selfloop transitions, 17 changer transitions 0/355 dead transitions. [2024-06-04 14:52:42,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 355 transitions, 3966 flow [2024-06-04 14:52:42,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:52:42,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:52:42,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-04 14:52:42,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:52:42,113 INFO L175 Difference]: Start difference. First operand has 285 places, 339 transitions, 3265 flow. Second operand 8 states and 152 transitions. [2024-06-04 14:52:42,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 355 transitions, 3966 flow [2024-06-04 14:52:43,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 355 transitions, 3852 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-04 14:52:43,450 INFO L231 Difference]: Finished difference. Result has 287 places, 342 transitions, 3287 flow [2024-06-04 14:52:43,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3151, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3287, PETRI_PLACES=287, PETRI_TRANSITIONS=342} [2024-06-04 14:52:43,450 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 242 predicate places. [2024-06-04 14:52:43,450 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 342 transitions, 3287 flow [2024-06-04 14:52:43,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:43,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:43,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:52:43,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-04 14:52:43,451 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:52:43,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:43,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1303869774, now seen corresponding path program 5 times [2024-06-04 14:52:43,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:43,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944937190] [2024-06-04 14:52:43,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:43,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:44,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:52:44,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:44,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944937190] [2024-06-04 14:52:44,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944937190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:44,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:44,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:52:44,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168108241] [2024-06-04 14:52:44,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:44,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:52:44,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:44,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:52:44,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:52:44,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:52:44,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 342 transitions, 3287 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:52:44,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:44,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:52:44,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:52:45,721 INFO L124 PetriNetUnfolderBase]: 3017/4816 cut-off events. [2024-06-04 14:52:45,721 INFO L125 PetriNetUnfolderBase]: For 936225/936233 co-relation queries the response was YES. [2024-06-04 14:52:45,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49581 conditions, 4816 events. 3017/4816 cut-off events. For 936225/936233 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 28112 event pairs, 663 based on Foata normal form. 4/4808 useless extension candidates. Maximal degree in co-relation 49452. Up to 4307 conditions per place. [2024-06-04 14:52:45,777 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 265 selfloop transitions, 53 changer transitions 0/359 dead transitions. [2024-06-04 14:52:45,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 359 transitions, 4341 flow [2024-06-04 14:52:45,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:52:45,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:52:45,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-04 14:52:45,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-04 14:52:45,778 INFO L175 Difference]: Start difference. First operand has 287 places, 342 transitions, 3287 flow. Second operand 8 states and 150 transitions. [2024-06-04 14:52:45,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 359 transitions, 4341 flow [2024-06-04 14:52:47,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 359 transitions, 4201 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-04 14:52:47,046 INFO L231 Difference]: Finished difference. Result has 288 places, 348 transitions, 3469 flow [2024-06-04 14:52:47,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3147, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3469, PETRI_PLACES=288, PETRI_TRANSITIONS=348} [2024-06-04 14:52:47,047 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 243 predicate places. [2024-06-04 14:52:47,047 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 348 transitions, 3469 flow [2024-06-04 14:52:47,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:52:47,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:47,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:52:47,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-04 14:52:47,047 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:52:47,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:47,047 INFO L85 PathProgramCache]: Analyzing trace with hash 373771741, now seen corresponding path program 4 times [2024-06-04 14:52:47,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:47,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160392907] [2024-06-04 14:52:47,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:47,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:48,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:52:48,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:48,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160392907] [2024-06-04 14:52:48,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160392907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:48,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:48,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:52:48,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822709626] [2024-06-04 14:52:48,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:48,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:52:48,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:48,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:52:48,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:52:48,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:52:48,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 348 transitions, 3469 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:48,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:48,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:52:48,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:52:49,435 INFO L124 PetriNetUnfolderBase]: 2779/4546 cut-off events. [2024-06-04 14:52:49,435 INFO L125 PetriNetUnfolderBase]: For 946271/946276 co-relation queries the response was YES. [2024-06-04 14:52:49,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48378 conditions, 4546 events. 2779/4546 cut-off events. For 946271/946276 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 27325 event pairs, 604 based on Foata normal form. 5/4527 useless extension candidates. Maximal degree in co-relation 48249. Up to 3900 conditions per place. [2024-06-04 14:52:49,488 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 260 selfloop transitions, 38 changer transitions 0/370 dead transitions. [2024-06-04 14:52:49,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 370 transitions, 4239 flow [2024-06-04 14:52:49,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:52:49,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:52:49,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-04 14:52:49,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-04 14:52:49,490 INFO L175 Difference]: Start difference. First operand has 288 places, 348 transitions, 3469 flow. Second operand 8 states and 155 transitions. [2024-06-04 14:52:49,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 370 transitions, 4239 flow [2024-06-04 14:52:51,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 370 transitions, 4104 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-04 14:52:51,171 INFO L231 Difference]: Finished difference. Result has 294 places, 359 transitions, 3604 flow [2024-06-04 14:52:51,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3334, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3604, PETRI_PLACES=294, PETRI_TRANSITIONS=359} [2024-06-04 14:52:51,171 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 249 predicate places. [2024-06-04 14:52:51,171 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 359 transitions, 3604 flow [2024-06-04 14:52:51,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:51,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:51,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:52:51,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-04 14:52:51,172 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:52:51,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:51,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1309383784, now seen corresponding path program 6 times [2024-06-04 14:52:51,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:51,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085384020] [2024-06-04 14:52:51,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:51,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:52,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:52:52,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:52,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085384020] [2024-06-04 14:52:52,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085384020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:52,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:52,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:52:52,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460429962] [2024-06-04 14:52:52,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:52,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:52:52,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:52,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:52:52,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:52:52,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:52:52,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 359 transitions, 3604 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:52:52,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:52,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:52:52,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:52:53,626 INFO L124 PetriNetUnfolderBase]: 3011/4808 cut-off events. [2024-06-04 14:52:53,626 INFO L125 PetriNetUnfolderBase]: For 966907/966912 co-relation queries the response was YES. [2024-06-04 14:52:53,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50178 conditions, 4808 events. 3011/4808 cut-off events. For 966907/966912 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 28038 event pairs, 661 based on Foata normal form. 3/4799 useless extension candidates. Maximal degree in co-relation 50045. Up to 4321 conditions per place. [2024-06-04 14:52:53,686 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 293 selfloop transitions, 35 changer transitions 0/369 dead transitions. [2024-06-04 14:52:53,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 369 transitions, 4284 flow [2024-06-04 14:52:53,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:52:53,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:52:53,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-04 14:52:53,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42329545454545453 [2024-06-04 14:52:53,687 INFO L175 Difference]: Start difference. First operand has 294 places, 359 transitions, 3604 flow. Second operand 8 states and 149 transitions. [2024-06-04 14:52:53,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 369 transitions, 4284 flow [2024-06-04 14:52:55,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 369 transitions, 4114 flow, removed 76 selfloop flow, removed 3 redundant places. [2024-06-04 14:52:55,465 INFO L231 Difference]: Finished difference. Result has 299 places, 359 transitions, 3510 flow [2024-06-04 14:52:55,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3434, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3510, PETRI_PLACES=299, PETRI_TRANSITIONS=359} [2024-06-04 14:52:55,465 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 254 predicate places. [2024-06-04 14:52:55,465 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 359 transitions, 3510 flow [2024-06-04 14:52:55,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:52:55,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:55,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:52:55,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-04 14:52:55,466 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:52:55,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:55,466 INFO L85 PathProgramCache]: Analyzing trace with hash -648828324, now seen corresponding path program 1 times [2024-06-04 14:52:55,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:55,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61615266] [2024-06-04 14:52:55,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:55,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:56,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:52:56,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:56,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61615266] [2024-06-04 14:52:56,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61615266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:56,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:56,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:52:56,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512005358] [2024-06-04 14:52:56,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:56,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:52:56,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:56,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:52:56,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:52:56,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:52:56,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 359 transitions, 3510 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:56,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:56,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:52:56,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:52:57,943 INFO L124 PetriNetUnfolderBase]: 2835/4607 cut-off events. [2024-06-04 14:52:57,943 INFO L125 PetriNetUnfolderBase]: For 985103/985104 co-relation queries the response was YES. [2024-06-04 14:52:57,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49121 conditions, 4607 events. 2835/4607 cut-off events. For 985103/985104 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 27356 event pairs, 569 based on Foata normal form. 3/4564 useless extension candidates. Maximal degree in co-relation 48986. Up to 4104 conditions per place. [2024-06-04 14:52:57,997 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 316 selfloop transitions, 17 changer transitions 0/380 dead transitions. [2024-06-04 14:52:57,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 380 transitions, 4293 flow [2024-06-04 14:52:57,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:52:57,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:52:57,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-04 14:52:57,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460227272727273 [2024-06-04 14:52:57,998 INFO L175 Difference]: Start difference. First operand has 299 places, 359 transitions, 3510 flow. Second operand 8 states and 157 transitions. [2024-06-04 14:52:57,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 380 transitions, 4293 flow [2024-06-04 14:52:59,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 380 transitions, 4161 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-04 14:52:59,765 INFO L231 Difference]: Finished difference. Result has 300 places, 362 transitions, 3488 flow [2024-06-04 14:52:59,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3378, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3488, PETRI_PLACES=300, PETRI_TRANSITIONS=362} [2024-06-04 14:52:59,766 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 255 predicate places. [2024-06-04 14:52:59,766 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 362 transitions, 3488 flow [2024-06-04 14:52:59,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:59,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:59,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:52:59,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-04 14:52:59,767 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:52:59,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:59,767 INFO L85 PathProgramCache]: Analyzing trace with hash 167364100, now seen corresponding path program 2 times [2024-06-04 14:52:59,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:59,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010470045] [2024-06-04 14:52:59,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:59,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:53:01,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:53:01,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:53:01,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010470045] [2024-06-04 14:53:01,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010470045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:53:01,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:53:01,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:53:01,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579037660] [2024-06-04 14:53:01,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:53:01,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:53:01,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:53:01,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:53:01,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:53:01,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:53:01,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 362 transitions, 3488 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:53:01,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:53:01,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:53:01,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:53:02,640 INFO L124 PetriNetUnfolderBase]: 2850/4630 cut-off events. [2024-06-04 14:53:02,641 INFO L125 PetriNetUnfolderBase]: For 999459/999460 co-relation queries the response was YES. [2024-06-04 14:53:02,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49770 conditions, 4630 events. 2850/4630 cut-off events. For 999459/999460 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 27475 event pairs, 563 based on Foata normal form. 3/4589 useless extension candidates. Maximal degree in co-relation 49634. Up to 4126 conditions per place. [2024-06-04 14:53:02,701 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 319 selfloop transitions, 18 changer transitions 0/384 dead transitions. [2024-06-04 14:53:02,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 384 transitions, 4306 flow [2024-06-04 14:53:02,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:53:02,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:53:02,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-04 14:53:02,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-04 14:53:02,702 INFO L175 Difference]: Start difference. First operand has 300 places, 362 transitions, 3488 flow. Second operand 8 states and 155 transitions. [2024-06-04 14:53:02,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 384 transitions, 4306 flow [2024-06-04 14:53:04,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 384 transitions, 4218 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-04 14:53:04,558 INFO L231 Difference]: Finished difference. Result has 303 places, 369 transitions, 3552 flow [2024-06-04 14:53:04,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3400, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3552, PETRI_PLACES=303, PETRI_TRANSITIONS=369} [2024-06-04 14:53:04,559 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 258 predicate places. [2024-06-04 14:53:04,559 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 369 transitions, 3552 flow [2024-06-04 14:53:04,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:53:04,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:53:04,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:53:04,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-04 14:53:04,559 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:53:04,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:53:04,560 INFO L85 PathProgramCache]: Analyzing trace with hash 374017540, now seen corresponding path program 3 times [2024-06-04 14:53:04,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:53:04,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889644288] [2024-06-04 14:53:04,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:53:04,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:53:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:53:06,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:53:06,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:53:06,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889644288] [2024-06-04 14:53:06,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889644288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:53:06,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:53:06,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:53:06,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924715797] [2024-06-04 14:53:06,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:53:06,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:53:06,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:53:06,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:53:06,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:53:06,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:53:06,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 369 transitions, 3552 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:53:06,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:53:06,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:53:06,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:53:07,458 INFO L124 PetriNetUnfolderBase]: 2866/4660 cut-off events. [2024-06-04 14:53:07,458 INFO L125 PetriNetUnfolderBase]: For 1031840/1031856 co-relation queries the response was YES. [2024-06-04 14:53:07,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50583 conditions, 4660 events. 2866/4660 cut-off events. For 1031840/1031856 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 27746 event pairs, 566 based on Foata normal form. 6/4621 useless extension candidates. Maximal degree in co-relation 50445. Up to 4073 conditions per place. [2024-06-04 14:53:07,530 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 302 selfloop transitions, 47 changer transitions 0/396 dead transitions. [2024-06-04 14:53:07,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 396 transitions, 4952 flow [2024-06-04 14:53:07,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:53:07,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:53:07,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-04 14:53:07,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45738636363636365 [2024-06-04 14:53:07,531 INFO L175 Difference]: Start difference. First operand has 303 places, 369 transitions, 3552 flow. Second operand 8 states and 161 transitions. [2024-06-04 14:53:07,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 396 transitions, 4952 flow [2024-06-04 14:53:09,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 396 transitions, 4874 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-04 14:53:09,384 INFO L231 Difference]: Finished difference. Result has 307 places, 379 transitions, 3815 flow [2024-06-04 14:53:09,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3474, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3815, PETRI_PLACES=307, PETRI_TRANSITIONS=379} [2024-06-04 14:53:09,384 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 262 predicate places. [2024-06-04 14:53:09,385 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 379 transitions, 3815 flow [2024-06-04 14:53:09,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:53:09,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:53:09,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:53:09,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-04 14:53:09,385 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:53:09,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:53:09,386 INFO L85 PathProgramCache]: Analyzing trace with hash 366665890, now seen corresponding path program 4 times [2024-06-04 14:53:09,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:53:09,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253029685] [2024-06-04 14:53:09,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:53:09,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:53:09,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:53:11,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:53:11,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:53:11,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253029685] [2024-06-04 14:53:11,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253029685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:53:11,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:53:11,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:53:11,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304545507] [2024-06-04 14:53:11,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:53:11,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:53:11,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:53:11,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:53:11,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:53:11,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:53:11,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 379 transitions, 3815 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:53:11,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:53:11,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:53:11,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:53:12,484 INFO L124 PetriNetUnfolderBase]: 2877/4678 cut-off events. [2024-06-04 14:53:12,485 INFO L125 PetriNetUnfolderBase]: For 1047773/1047789 co-relation queries the response was YES. [2024-06-04 14:53:12,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51403 conditions, 4678 events. 2877/4678 cut-off events. For 1047773/1047789 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 27836 event pairs, 565 based on Foata normal form. 5/4639 useless extension candidates. Maximal degree in co-relation 51263. Up to 4140 conditions per place. [2024-06-04 14:53:12,552 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 323 selfloop transitions, 30 changer transitions 0/400 dead transitions. [2024-06-04 14:53:12,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 400 transitions, 4952 flow [2024-06-04 14:53:12,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:53:12,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:53:12,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-04 14:53:12,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-06-04 14:53:12,553 INFO L175 Difference]: Start difference. First operand has 307 places, 379 transitions, 3815 flow. Second operand 8 states and 158 transitions. [2024-06-04 14:53:12,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 400 transitions, 4952 flow [2024-06-04 14:53:14,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 400 transitions, 4812 flow, removed 61 selfloop flow, removed 3 redundant places. [2024-06-04 14:53:14,754 INFO L231 Difference]: Finished difference. Result has 312 places, 386 transitions, 3923 flow [2024-06-04 14:53:14,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3695, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3923, PETRI_PLACES=312, PETRI_TRANSITIONS=386} [2024-06-04 14:53:14,754 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 267 predicate places. [2024-06-04 14:53:14,754 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 386 transitions, 3923 flow [2024-06-04 14:53:14,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:53:14,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:53:14,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:53:14,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-04 14:53:14,755 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:53:14,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:53:14,756 INFO L85 PathProgramCache]: Analyzing trace with hash 558634847, now seen corresponding path program 1 times [2024-06-04 14:53:14,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:53:14,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899663559] [2024-06-04 14:53:14,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:53:14,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:53:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:53:16,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:53:16,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:53:16,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899663559] [2024-06-04 14:53:16,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899663559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:53:16,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:53:16,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:53:16,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134850093] [2024-06-04 14:53:16,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:53:16,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:53:16,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:53:16,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:53:16,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:53:16,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:53:16,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 386 transitions, 3923 flow. Second operand has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:53:16,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:53:16,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:53:16,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:53:17,777 INFO L124 PetriNetUnfolderBase]: 2818/4618 cut-off events. [2024-06-04 14:53:17,777 INFO L125 PetriNetUnfolderBase]: For 1056590/1056590 co-relation queries the response was YES. [2024-06-04 14:53:17,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50991 conditions, 4618 events. 2818/4618 cut-off events. For 1056590/1056590 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 27840 event pairs, 597 based on Foata normal form. 2/4597 useless extension candidates. Maximal degree in co-relation 50849. Up to 4003 conditions per place. [2024-06-04 14:53:17,847 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 311 selfloop transitions, 19 changer transitions 0/402 dead transitions. [2024-06-04 14:53:17,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 402 transitions, 4705 flow [2024-06-04 14:53:17,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:53:17,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:53:17,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-04 14:53:17,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-06-04 14:53:17,848 INFO L175 Difference]: Start difference. First operand has 312 places, 386 transitions, 3923 flow. Second operand 9 states and 166 transitions. [2024-06-04 14:53:17,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 402 transitions, 4705 flow [2024-06-04 14:53:19,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 402 transitions, 4617 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-04 14:53:19,636 INFO L231 Difference]: Finished difference. Result has 318 places, 389 transitions, 3977 flow [2024-06-04 14:53:19,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3835, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3977, PETRI_PLACES=318, PETRI_TRANSITIONS=389} [2024-06-04 14:53:19,637 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 273 predicate places. [2024-06-04 14:53:19,637 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 389 transitions, 3977 flow [2024-06-04 14:53:19,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:53:19,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:53:19,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:53:19,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-04 14:53:19,637 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:53:19,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:53:19,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1377331389, now seen corresponding path program 1 times [2024-06-04 14:53:19,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:53:19,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106987686] [2024-06-04 14:53:19,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:53:19,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:53:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:53:20,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:53:20,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:53:20,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106987686] [2024-06-04 14:53:20,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106987686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:53:20,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:53:20,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:53:20,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36004805] [2024-06-04 14:53:20,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:53:20,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:53:20,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:53:20,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:53:20,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:53:20,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:53:20,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 389 transitions, 3977 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:53:20,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:53:20,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:53:20,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:53:21,997 INFO L124 PetriNetUnfolderBase]: 3231/5068 cut-off events. [2024-06-04 14:53:21,997 INFO L125 PetriNetUnfolderBase]: For 1071772/1071774 co-relation queries the response was YES. [2024-06-04 14:53:22,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54004 conditions, 5068 events. 3231/5068 cut-off events. For 1071772/1071774 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 28823 event pairs, 655 based on Foata normal form. 4/5070 useless extension candidates. Maximal degree in co-relation 53859. Up to 4806 conditions per place. [2024-06-04 14:53:22,098 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 382 selfloop transitions, 31 changer transitions 0/418 dead transitions. [2024-06-04 14:53:22,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 418 transitions, 4995 flow [2024-06-04 14:53:22,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:53:22,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:53:22,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-04 14:53:22,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-04 14:53:22,100 INFO L175 Difference]: Start difference. First operand has 318 places, 389 transitions, 3977 flow. Second operand 8 states and 155 transitions. [2024-06-04 14:53:22,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 418 transitions, 4995 flow [2024-06-04 14:53:24,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 418 transitions, 4878 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-04 14:53:24,523 INFO L231 Difference]: Finished difference. Result has 320 places, 392 transitions, 4042 flow [2024-06-04 14:53:24,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3860, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4042, PETRI_PLACES=320, PETRI_TRANSITIONS=392} [2024-06-04 14:53:24,523 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 275 predicate places. [2024-06-04 14:53:24,523 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 392 transitions, 4042 flow [2024-06-04 14:53:24,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:53:24,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:53:24,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:53:24,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-04 14:53:24,524 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:53:24,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:53:24,524 INFO L85 PathProgramCache]: Analyzing trace with hash 44560943, now seen corresponding path program 2 times [2024-06-04 14:53:24,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:53:24,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154801926] [2024-06-04 14:53:24,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:53:24,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:53:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:53:25,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:53:25,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:53:25,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154801926] [2024-06-04 14:53:25,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154801926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:53:25,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:53:25,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:53:25,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259242713] [2024-06-04 14:53:25,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:53:25,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:53:25,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:53:25,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:53:25,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:53:25,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:53:25,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 392 transitions, 4042 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:53:25,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:53:25,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:53:25,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:53:26,767 INFO L124 PetriNetUnfolderBase]: 3257/5108 cut-off events. [2024-06-04 14:53:26,768 INFO L125 PetriNetUnfolderBase]: For 1105059/1105061 co-relation queries the response was YES. [2024-06-04 14:53:26,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55227 conditions, 5108 events. 3257/5108 cut-off events. For 1105059/1105061 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 29139 event pairs, 656 based on Foata normal form. 4/5110 useless extension candidates. Maximal degree in co-relation 55081. Up to 4822 conditions per place. [2024-06-04 14:53:26,842 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 379 selfloop transitions, 39 changer transitions 0/423 dead transitions. [2024-06-04 14:53:26,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 423 transitions, 5404 flow [2024-06-04 14:53:26,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:53:26,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:53:26,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-04 14:53:26,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-04 14:53:26,843 INFO L175 Difference]: Start difference. First operand has 320 places, 392 transitions, 4042 flow. Second operand 8 states and 155 transitions. [2024-06-04 14:53:26,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 423 transitions, 5404 flow [2024-06-04 14:53:29,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 423 transitions, 5261 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-04 14:53:29,676 INFO L231 Difference]: Finished difference. Result has 323 places, 398 transitions, 4217 flow [2024-06-04 14:53:29,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3899, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4217, PETRI_PLACES=323, PETRI_TRANSITIONS=398} [2024-06-04 14:53:29,676 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 278 predicate places. [2024-06-04 14:53:29,676 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 398 transitions, 4217 flow [2024-06-04 14:53:29,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:53:29,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:53:29,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:53:29,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-04 14:53:29,677 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:53:29,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:53:29,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1482752558, now seen corresponding path program 1 times [2024-06-04 14:53:29,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:53:29,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678014619] [2024-06-04 14:53:29,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:53:29,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:53:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:53:31,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:53:31,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:53:31,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678014619] [2024-06-04 14:53:31,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678014619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:53:31,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:53:31,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:53:31,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791867320] [2024-06-04 14:53:31,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:53:31,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:53:31,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:53:31,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:53:31,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:53:31,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:53:31,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 398 transitions, 4217 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:53:31,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:53:31,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:53:31,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:53:32,837 INFO L124 PetriNetUnfolderBase]: 3380/5352 cut-off events. [2024-06-04 14:53:32,838 INFO L125 PetriNetUnfolderBase]: For 1175444/1175446 co-relation queries the response was YES. [2024-06-04 14:53:32,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57261 conditions, 5352 events. 3380/5352 cut-off events. For 1175444/1175446 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 31245 event pairs, 658 based on Foata normal form. 12/5361 useless extension candidates. Maximal degree in co-relation 57114. Up to 4404 conditions per place. [2024-06-04 14:53:32,914 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 346 selfloop transitions, 106 changer transitions 0/457 dead transitions. [2024-06-04 14:53:32,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 457 transitions, 5487 flow [2024-06-04 14:53:32,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:53:32,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:53:32,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 224 transitions. [2024-06-04 14:53:32,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4628099173553719 [2024-06-04 14:53:32,915 INFO L175 Difference]: Start difference. First operand has 323 places, 398 transitions, 4217 flow. Second operand 11 states and 224 transitions. [2024-06-04 14:53:32,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 457 transitions, 5487 flow [2024-06-04 14:53:36,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 457 transitions, 5330 flow, removed 62 selfloop flow, removed 4 redundant places. [2024-06-04 14:53:36,292 INFO L231 Difference]: Finished difference. Result has 332 places, 406 transitions, 4458 flow [2024-06-04 14:53:36,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4060, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4458, PETRI_PLACES=332, PETRI_TRANSITIONS=406} [2024-06-04 14:53:36,293 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 287 predicate places. [2024-06-04 14:53:36,293 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 406 transitions, 4458 flow [2024-06-04 14:53:36,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:53:36,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:53:36,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:53:36,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-04 14:53:36,293 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:53:36,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:53:36,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1379151506, now seen corresponding path program 2 times [2024-06-04 14:53:36,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:53:36,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884062555] [2024-06-04 14:53:36,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:53:36,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:53:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:53:37,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:53:37,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:53:37,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884062555] [2024-06-04 14:53:37,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884062555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:53:37,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:53:37,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:53:37,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999334263] [2024-06-04 14:53:37,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:53:37,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:53:37,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:53:37,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:53:37,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:53:37,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:53:37,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 406 transitions, 4458 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:53:37,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:53:37,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:53:37,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:53:39,285 INFO L124 PetriNetUnfolderBase]: 3490/5550 cut-off events. [2024-06-04 14:53:39,285 INFO L125 PetriNetUnfolderBase]: For 1208460/1208462 co-relation queries the response was YES. [2024-06-04 14:53:39,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59416 conditions, 5550 events. 3490/5550 cut-off events. For 1208460/1208462 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 32949 event pairs, 687 based on Foata normal form. 12/5559 useless extension candidates. Maximal degree in co-relation 59265. Up to 4677 conditions per place. [2024-06-04 14:53:39,368 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 356 selfloop transitions, 100 changer transitions 0/461 dead transitions. [2024-06-04 14:53:39,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 461 transitions, 5717 flow [2024-06-04 14:53:39,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:53:39,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:53:39,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 224 transitions. [2024-06-04 14:53:39,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4628099173553719 [2024-06-04 14:53:39,370 INFO L175 Difference]: Start difference. First operand has 332 places, 406 transitions, 4458 flow. Second operand 11 states and 224 transitions. [2024-06-04 14:53:39,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 461 transitions, 5717 flow [2024-06-04 14:53:42,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 461 transitions, 5449 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-04 14:53:42,745 INFO L231 Difference]: Finished difference. Result has 339 places, 412 transitions, 4557 flow [2024-06-04 14:53:42,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4196, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4557, PETRI_PLACES=339, PETRI_TRANSITIONS=412} [2024-06-04 14:53:42,745 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 294 predicate places. [2024-06-04 14:53:42,745 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 412 transitions, 4557 flow [2024-06-04 14:53:42,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:53:42,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:53:42,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:53:42,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-04 14:53:42,745 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:53:42,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:53:42,746 INFO L85 PathProgramCache]: Analyzing trace with hash 625819610, now seen corresponding path program 3 times [2024-06-04 14:53:42,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:53:42,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625649661] [2024-06-04 14:53:42,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:53:42,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:53:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:53:44,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:53:44,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:53:44,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625649661] [2024-06-04 14:53:44,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625649661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:53:44,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:53:44,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:53:44,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119159144] [2024-06-04 14:53:44,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:53:44,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:53:44,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:53:44,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:53:44,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:53:44,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:53:44,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 412 transitions, 4557 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:53:44,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:53:44,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:53:44,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:53:46,447 INFO L124 PetriNetUnfolderBase]: 3572/5714 cut-off events. [2024-06-04 14:53:46,448 INFO L125 PetriNetUnfolderBase]: For 1236189/1236191 co-relation queries the response was YES. [2024-06-04 14:53:46,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60657 conditions, 5714 events. 3572/5714 cut-off events. For 1236189/1236191 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 34517 event pairs, 717 based on Foata normal form. 12/5723 useless extension candidates. Maximal degree in co-relation 60503. Up to 4819 conditions per place. [2024-06-04 14:53:46,543 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 356 selfloop transitions, 104 changer transitions 0/465 dead transitions. [2024-06-04 14:53:46,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 465 transitions, 5807 flow [2024-06-04 14:53:46,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:53:46,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:53:46,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-06-04 14:53:46,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4607438016528926 [2024-06-04 14:53:46,545 INFO L175 Difference]: Start difference. First operand has 339 places, 412 transitions, 4557 flow. Second operand 11 states and 223 transitions. [2024-06-04 14:53:46,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 465 transitions, 5807 flow [2024-06-04 14:53:49,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 465 transitions, 5544 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-04 14:53:49,836 INFO L231 Difference]: Finished difference. Result has 345 places, 416 transitions, 4640 flow [2024-06-04 14:53:49,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4298, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4640, PETRI_PLACES=345, PETRI_TRANSITIONS=416} [2024-06-04 14:53:49,836 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 300 predicate places. [2024-06-04 14:53:49,836 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 416 transitions, 4640 flow [2024-06-04 14:53:49,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:53:49,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:53:49,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:53:49,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-04 14:53:49,837 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:53:49,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:53:49,837 INFO L85 PathProgramCache]: Analyzing trace with hash 633228920, now seen corresponding path program 4 times [2024-06-04 14:53:49,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:53:49,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426744646] [2024-06-04 14:53:49,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:53:49,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:53:49,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:53:51,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:53:51,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:53:51,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426744646] [2024-06-04 14:53:51,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426744646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:53:51,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:53:51,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:53:51,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602958991] [2024-06-04 14:53:51,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:53:51,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:53:51,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:53:51,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:53:51,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:53:51,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:53:51,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 416 transitions, 4640 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:53:51,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:53:51,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:53:51,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:53:53,156 INFO L124 PetriNetUnfolderBase]: 3613/5795 cut-off events. [2024-06-04 14:53:53,157 INFO L125 PetriNetUnfolderBase]: For 1259915/1259917 co-relation queries the response was YES. [2024-06-04 14:53:53,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61067 conditions, 5795 events. 3613/5795 cut-off events. For 1259915/1259917 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 35162 event pairs, 721 based on Foata normal form. 12/5804 useless extension candidates. Maximal degree in co-relation 60911. Up to 4330 conditions per place. [2024-06-04 14:53:53,246 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 348 selfloop transitions, 114 changer transitions 0/467 dead transitions. [2024-06-04 14:53:53,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 467 transitions, 5858 flow [2024-06-04 14:53:53,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:53:53,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:53:53,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-06-04 14:53:53,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4607438016528926 [2024-06-04 14:53:53,247 INFO L175 Difference]: Start difference. First operand has 345 places, 416 transitions, 4640 flow. Second operand 11 states and 223 transitions. [2024-06-04 14:53:53,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 467 transitions, 5858 flow [2024-06-04 14:53:56,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 467 transitions, 5605 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-04 14:53:56,313 INFO L231 Difference]: Finished difference. Result has 350 places, 417 transitions, 4707 flow [2024-06-04 14:53:56,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4387, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4707, PETRI_PLACES=350, PETRI_TRANSITIONS=417} [2024-06-04 14:53:56,314 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 305 predicate places. [2024-06-04 14:53:56,314 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 417 transitions, 4707 flow [2024-06-04 14:53:56,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:53:56,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:53:56,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:53:56,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-04 14:53:56,314 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:53:56,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:53:56,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1554261681, now seen corresponding path program 1 times [2024-06-04 14:53:56,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:53:56,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411093515] [2024-06-04 14:53:56,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:53:56,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:53:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:53:57,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:53:57,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:53:57,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411093515] [2024-06-04 14:53:57,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411093515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:53:57,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:53:57,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:53:57,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206119026] [2024-06-04 14:53:57,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:53:57,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:53:57,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:53:57,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:53:57,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:53:57,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:53:57,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 417 transitions, 4707 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:53:57,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:53:57,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:53:57,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:53:59,223 INFO L124 PetriNetUnfolderBase]: 3408/5561 cut-off events. [2024-06-04 14:53:59,223 INFO L125 PetriNetUnfolderBase]: For 1237016/1237036 co-relation queries the response was YES. [2024-06-04 14:53:59,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59584 conditions, 5561 events. 3408/5561 cut-off events. For 1237016/1237036 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 34525 event pairs, 713 based on Foata normal form. 2/5539 useless extension candidates. Maximal degree in co-relation 59427. Up to 4995 conditions per place. [2024-06-04 14:53:59,300 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 385 selfloop transitions, 23 changer transitions 0/449 dead transitions. [2024-06-04 14:53:59,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 449 transitions, 5695 flow [2024-06-04 14:53:59,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:53:59,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:53:59,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-04 14:53:59,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-04 14:53:59,301 INFO L175 Difference]: Start difference. First operand has 350 places, 417 transitions, 4707 flow. Second operand 9 states and 176 transitions. [2024-06-04 14:53:59,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 449 transitions, 5695 flow [2024-06-04 14:54:02,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 449 transitions, 5393 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-04 14:54:02,655 INFO L231 Difference]: Finished difference. Result has 350 places, 420 transitions, 4553 flow [2024-06-04 14:54:02,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4405, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4553, PETRI_PLACES=350, PETRI_TRANSITIONS=420} [2024-06-04 14:54:02,655 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 305 predicate places. [2024-06-04 14:54:02,655 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 420 transitions, 4553 flow [2024-06-04 14:54:02,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:54:02,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:54:02,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:54:02,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-04 14:54:02,656 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:54:02,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:54:02,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1564438671, now seen corresponding path program 2 times [2024-06-04 14:54:02,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:54:02,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292598634] [2024-06-04 14:54:02,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:54:02,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:54:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:54:03,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:54:03,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:54:03,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292598634] [2024-06-04 14:54:03,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292598634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:54:03,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:54:03,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:54:03,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910196852] [2024-06-04 14:54:03,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:54:03,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:54:03,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:54:03,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:54:03,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:54:04,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:54:04,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 420 transitions, 4553 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:54:04,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:54:04,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:54:04,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:54:05,491 INFO L124 PetriNetUnfolderBase]: 3419/5577 cut-off events. [2024-06-04 14:54:05,491 INFO L125 PetriNetUnfolderBase]: For 1246744/1246764 co-relation queries the response was YES. [2024-06-04 14:54:05,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59474 conditions, 5577 events. 3419/5577 cut-off events. For 1246744/1246764 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 34631 event pairs, 713 based on Foata normal form. 5/5559 useless extension candidates. Maximal degree in co-relation 59316. Up to 5005 conditions per place. [2024-06-04 14:54:05,575 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 379 selfloop transitions, 27 changer transitions 0/447 dead transitions. [2024-06-04 14:54:05,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 447 transitions, 5529 flow [2024-06-04 14:54:05,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:54:05,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:54:05,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-04 14:54:05,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-04 14:54:05,576 INFO L175 Difference]: Start difference. First operand has 350 places, 420 transitions, 4553 flow. Second operand 9 states and 172 transitions. [2024-06-04 14:54:05,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 447 transitions, 5529 flow [2024-06-04 14:54:07,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 447 transitions, 5403 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-04 14:54:07,826 INFO L231 Difference]: Finished difference. Result has 352 places, 423 transitions, 4589 flow [2024-06-04 14:54:07,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4427, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4589, PETRI_PLACES=352, PETRI_TRANSITIONS=423} [2024-06-04 14:54:07,826 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 307 predicate places. [2024-06-04 14:54:07,826 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 423 transitions, 4589 flow [2024-06-04 14:54:07,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:54:07,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:54:07,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:54:07,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-04 14:54:07,827 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:54:07,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:54:07,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1564450761, now seen corresponding path program 3 times [2024-06-04 14:54:07,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:54:07,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271744874] [2024-06-04 14:54:07,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:54:07,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:54:07,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:54:09,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:54:09,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:54:09,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271744874] [2024-06-04 14:54:09,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271744874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:54:09,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:54:09,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:54:09,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770030166] [2024-06-04 14:54:09,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:54:09,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:54:09,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:54:09,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:54:09,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:54:09,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:54:09,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 423 transitions, 4589 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:54:09,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:54:09,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:54:09,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:54:10,586 INFO L124 PetriNetUnfolderBase]: 3424/5590 cut-off events. [2024-06-04 14:54:10,586 INFO L125 PetriNetUnfolderBase]: For 1268965/1268973 co-relation queries the response was YES. [2024-06-04 14:54:10,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60062 conditions, 5590 events. 3424/5590 cut-off events. For 1268965/1268973 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 34781 event pairs, 713 based on Foata normal form. 10/5577 useless extension candidates. Maximal degree in co-relation 59903. Up to 5000 conditions per place. [2024-06-04 14:54:10,673 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 374 selfloop transitions, 35 changer transitions 0/450 dead transitions. [2024-06-04 14:54:10,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 450 transitions, 5577 flow [2024-06-04 14:54:10,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:54:10,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:54:10,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-04 14:54:10,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43686868686868685 [2024-06-04 14:54:10,674 INFO L175 Difference]: Start difference. First operand has 352 places, 423 transitions, 4589 flow. Second operand 9 states and 173 transitions. [2024-06-04 14:54:10,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 450 transitions, 5577 flow [2024-06-04 14:54:13,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 450 transitions, 5437 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-04 14:54:13,644 INFO L231 Difference]: Finished difference. Result has 354 places, 426 transitions, 4633 flow [2024-06-04 14:54:13,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4449, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4633, PETRI_PLACES=354, PETRI_TRANSITIONS=426} [2024-06-04 14:54:13,645 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 309 predicate places. [2024-06-04 14:54:13,645 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 426 transitions, 4633 flow [2024-06-04 14:54:13,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:54:13,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:54:13,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:54:13,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-04 14:54:13,646 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:54:13,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:54:13,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1371609533, now seen corresponding path program 1 times [2024-06-04 14:54:13,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:54:13,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171682032] [2024-06-04 14:54:13,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:54:13,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:54:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:54:15,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:54:15,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:54:15,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171682032] [2024-06-04 14:54:15,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171682032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:54:15,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:54:15,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:54:15,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209077774] [2024-06-04 14:54:15,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:54:15,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:54:15,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:54:15,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:54:15,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:54:15,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:54:15,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 426 transitions, 4633 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:54:15,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:54:15,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:54:15,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:54:16,530 INFO L124 PetriNetUnfolderBase]: 3434/5604 cut-off events. [2024-06-04 14:54:16,530 INFO L125 PetriNetUnfolderBase]: For 1292000/1292008 co-relation queries the response was YES. [2024-06-04 14:54:16,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60850 conditions, 5604 events. 3434/5604 cut-off events. For 1292000/1292008 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 34879 event pairs, 712 based on Foata normal form. 4/5585 useless extension candidates. Maximal degree in co-relation 60690. Up to 5044 conditions per place. [2024-06-04 14:54:16,616 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 391 selfloop transitions, 21 changer transitions 0/453 dead transitions. [2024-06-04 14:54:16,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 453 transitions, 5655 flow [2024-06-04 14:54:16,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:54:16,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:54:16,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-04 14:54:16,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:54:16,620 INFO L175 Difference]: Start difference. First operand has 354 places, 426 transitions, 4633 flow. Second operand 9 states and 171 transitions. [2024-06-04 14:54:16,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 453 transitions, 5655 flow [2024-06-04 14:54:19,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 453 transitions, 5493 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-04 14:54:19,998 INFO L231 Difference]: Finished difference. Result has 356 places, 429 transitions, 4645 flow [2024-06-04 14:54:19,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4471, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4645, PETRI_PLACES=356, PETRI_TRANSITIONS=429} [2024-06-04 14:54:19,999 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 311 predicate places. [2024-06-04 14:54:19,999 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 429 transitions, 4645 flow [2024-06-04 14:54:19,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:54:19,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:54:19,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:54:19,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-04 14:54:19,999 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:54:20,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:54:20,000 INFO L85 PathProgramCache]: Analyzing trace with hash 50905651, now seen corresponding path program 1 times [2024-06-04 14:54:20,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:54:20,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068192959] [2024-06-04 14:54:20,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:54:20,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:54:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:54:21,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:54:21,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:54:21,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068192959] [2024-06-04 14:54:21,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068192959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:54:21,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:54:21,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:54:21,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850213387] [2024-06-04 14:54:21,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:54:21,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:54:21,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:54:21,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:54:21,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:54:21,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:54:21,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 429 transitions, 4645 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:54:21,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:54:21,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:54:21,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:54:22,620 INFO L124 PetriNetUnfolderBase]: 3455/5619 cut-off events. [2024-06-04 14:54:22,620 INFO L125 PetriNetUnfolderBase]: For 1307827/1307829 co-relation queries the response was YES. [2024-06-04 14:54:22,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61627 conditions, 5619 events. 3455/5619 cut-off events. For 1307827/1307829 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 34885 event pairs, 696 based on Foata normal form. 1/5575 useless extension candidates. Maximal degree in co-relation 61466. Up to 5075 conditions per place. [2024-06-04 14:54:22,733 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 386 selfloop transitions, 29 changer transitions 0/455 dead transitions. [2024-06-04 14:54:22,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 455 transitions, 5651 flow [2024-06-04 14:54:22,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:54:22,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:54:22,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-04 14:54:22,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45170454545454547 [2024-06-04 14:54:22,735 INFO L175 Difference]: Start difference. First operand has 356 places, 429 transitions, 4645 flow. Second operand 8 states and 159 transitions. [2024-06-04 14:54:22,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 455 transitions, 5651 flow [2024-06-04 14:54:26,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 455 transitions, 5501 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-04 14:54:26,236 INFO L231 Difference]: Finished difference. Result has 357 places, 432 transitions, 4677 flow [2024-06-04 14:54:26,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4495, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4677, PETRI_PLACES=357, PETRI_TRANSITIONS=432} [2024-06-04 14:54:26,237 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 312 predicate places. [2024-06-04 14:54:26,237 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 432 transitions, 4677 flow [2024-06-04 14:54:26,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:54:26,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:54:26,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:54:26,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-04 14:54:26,237 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:54:26,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:54:26,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1204841499, now seen corresponding path program 3 times [2024-06-04 14:54:26,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:54:26,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255834934] [2024-06-04 14:54:26,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:54:26,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:54:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:54:27,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:54:27,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:54:27,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255834934] [2024-06-04 14:54:27,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255834934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:54:27,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:54:27,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:54:27,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936188902] [2024-06-04 14:54:27,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:54:27,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:54:27,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:54:27,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:54:27,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:54:27,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:54:27,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 432 transitions, 4677 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:54:27,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:54:27,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:54:27,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:54:28,758 INFO L124 PetriNetUnfolderBase]: 3668/5879 cut-off events. [2024-06-04 14:54:28,758 INFO L125 PetriNetUnfolderBase]: For 1339959/1339961 co-relation queries the response was YES. [2024-06-04 14:54:28,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63542 conditions, 5879 events. 3668/5879 cut-off events. For 1339959/1339961 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 35831 event pairs, 742 based on Foata normal form. 4/5881 useless extension candidates. Maximal degree in co-relation 63380. Up to 5530 conditions per place. [2024-06-04 14:54:28,848 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 423 selfloop transitions, 30 changer transitions 0/458 dead transitions. [2024-06-04 14:54:28,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 458 transitions, 5758 flow [2024-06-04 14:54:28,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:54:28,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:54:28,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-04 14:54:28,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-04 14:54:28,849 INFO L175 Difference]: Start difference. First operand has 357 places, 432 transitions, 4677 flow. Second operand 8 states and 153 transitions. [2024-06-04 14:54:28,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 458 transitions, 5758 flow [2024-06-04 14:54:32,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 458 transitions, 5598 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-04 14:54:32,500 INFO L231 Difference]: Finished difference. Result has 359 places, 435 transitions, 4689 flow [2024-06-04 14:54:32,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4517, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4689, PETRI_PLACES=359, PETRI_TRANSITIONS=435} [2024-06-04 14:54:32,500 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 314 predicate places. [2024-06-04 14:54:32,500 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 435 transitions, 4689 flow [2024-06-04 14:54:32,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:54:32,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:54:32,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:54:32,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-04 14:54:32,501 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:54:32,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:54:32,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1204483015, now seen corresponding path program 1 times [2024-06-04 14:54:32,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:54:32,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592374361] [2024-06-04 14:54:32,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:54:32,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:54:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:54:33,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:54:33,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:54:33,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592374361] [2024-06-04 14:54:33,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592374361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:54:33,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:54:33,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:54:33,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84987109] [2024-06-04 14:54:33,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:54:33,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:54:33,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:54:33,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:54:33,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:54:33,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:54:33,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 435 transitions, 4689 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:54:33,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:54:33,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:54:33,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:54:35,252 INFO L124 PetriNetUnfolderBase]: 3473/5648 cut-off events. [2024-06-04 14:54:35,252 INFO L125 PetriNetUnfolderBase]: For 1362479/1362481 co-relation queries the response was YES. [2024-06-04 14:54:35,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62556 conditions, 5648 events. 3473/5648 cut-off events. For 1362479/1362481 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 35081 event pairs, 691 based on Foata normal form. 4/5608 useless extension candidates. Maximal degree in co-relation 62393. Up to 5126 conditions per place. [2024-06-04 14:54:35,342 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 396 selfloop transitions, 23 changer transitions 0/460 dead transitions. [2024-06-04 14:54:35,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 460 transitions, 5715 flow [2024-06-04 14:54:35,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:54:35,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:54:35,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-04 14:54:35,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-04 14:54:35,344 INFO L175 Difference]: Start difference. First operand has 359 places, 435 transitions, 4689 flow. Second operand 8 states and 156 transitions. [2024-06-04 14:54:35,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 460 transitions, 5715 flow [2024-06-04 14:54:38,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 460 transitions, 5574 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-04 14:54:38,935 INFO L231 Difference]: Finished difference. Result has 361 places, 439 transitions, 4725 flow [2024-06-04 14:54:38,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4548, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4725, PETRI_PLACES=361, PETRI_TRANSITIONS=439} [2024-06-04 14:54:38,936 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 316 predicate places. [2024-06-04 14:54:38,936 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 439 transitions, 4725 flow [2024-06-04 14:54:38,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:54:38,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:54:38,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:54:38,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-04 14:54:38,936 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:54:38,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:54:38,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1204483449, now seen corresponding path program 4 times [2024-06-04 14:54:38,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:54:38,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345118456] [2024-06-04 14:54:38,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:54:38,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:54:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:54:39,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:54:39,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:54:39,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345118456] [2024-06-04 14:54:39,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345118456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:54:39,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:54:39,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:54:39,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26519459] [2024-06-04 14:54:39,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:54:39,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:54:39,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:54:39,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:54:39,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:54:39,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:54:39,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 439 transitions, 4725 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:54:39,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:54:39,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:54:39,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:54:41,431 INFO L124 PetriNetUnfolderBase]: 3688/5905 cut-off events. [2024-06-04 14:54:41,431 INFO L125 PetriNetUnfolderBase]: For 1390577/1390579 co-relation queries the response was YES. [2024-06-04 14:54:41,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64749 conditions, 5905 events. 3688/5905 cut-off events. For 1390577/1390579 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 35986 event pairs, 741 based on Foata normal form. 4/5907 useless extension candidates. Maximal degree in co-relation 64585. Up to 5538 conditions per place. [2024-06-04 14:54:41,520 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 420 selfloop transitions, 38 changer transitions 0/463 dead transitions. [2024-06-04 14:54:41,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 463 transitions, 5856 flow [2024-06-04 14:54:41,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:54:41,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:54:41,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-04 14:54:41,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:54:41,521 INFO L175 Difference]: Start difference. First operand has 361 places, 439 transitions, 4725 flow. Second operand 8 states and 152 transitions. [2024-06-04 14:54:41,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 463 transitions, 5856 flow [2024-06-04 14:54:43,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 463 transitions, 5707 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-06-04 14:54:43,902 INFO L231 Difference]: Finished difference. Result has 363 places, 442 transitions, 4792 flow [2024-06-04 14:54:43,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4576, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4792, PETRI_PLACES=363, PETRI_TRANSITIONS=442} [2024-06-04 14:54:43,902 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 318 predicate places. [2024-06-04 14:54:43,902 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 442 transitions, 4792 flow [2024-06-04 14:54:43,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:54:43,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:54:43,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:54:43,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-04 14:54:43,903 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:54:43,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:54:43,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1908709233, now seen corresponding path program 2 times [2024-06-04 14:54:43,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:54:43,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118342912] [2024-06-04 14:54:43,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:54:43,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:54:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:54:45,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:54:45,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:54:45,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118342912] [2024-06-04 14:54:45,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118342912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:54:45,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:54:45,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:54:45,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714549469] [2024-06-04 14:54:45,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:54:45,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:54:45,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:54:45,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:54:45,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:54:45,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:54:45,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 442 transitions, 4792 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:54:45,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:54:45,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:54:45,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:54:46,888 INFO L124 PetriNetUnfolderBase]: 3491/5674 cut-off events. [2024-06-04 14:54:46,888 INFO L125 PetriNetUnfolderBase]: For 1414705/1414707 co-relation queries the response was YES. [2024-06-04 14:54:46,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64096 conditions, 5674 events. 3491/5674 cut-off events. For 1414705/1414707 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 35256 event pairs, 691 based on Foata normal form. 4/5634 useless extension candidates. Maximal degree in co-relation 63931. Up to 5135 conditions per place. [2024-06-04 14:54:46,979 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 392 selfloop transitions, 31 changer transitions 0/465 dead transitions. [2024-06-04 14:54:46,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 465 transitions, 5848 flow [2024-06-04 14:54:46,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:54:46,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:54:46,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-04 14:54:46,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-04 14:54:46,980 INFO L175 Difference]: Start difference. First operand has 363 places, 442 transitions, 4792 flow. Second operand 8 states and 155 transitions. [2024-06-04 14:54:46,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 465 transitions, 5848 flow [2024-06-04 14:54:50,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 465 transitions, 5660 flow, removed 58 selfloop flow, removed 6 redundant places. [2024-06-04 14:54:50,811 INFO L231 Difference]: Finished difference. Result has 365 places, 446 transitions, 4807 flow [2024-06-04 14:54:50,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4604, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4807, PETRI_PLACES=365, PETRI_TRANSITIONS=446} [2024-06-04 14:54:50,812 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 320 predicate places. [2024-06-04 14:54:50,812 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 446 transitions, 4807 flow [2024-06-04 14:54:50,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:54:50,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:54:50,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:54:50,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-04 14:54:50,812 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:54:50,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:54:50,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1908708799, now seen corresponding path program 5 times [2024-06-04 14:54:50,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:54:50,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027102156] [2024-06-04 14:54:50,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:54:50,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:54:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:54:51,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:54:51,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:54:51,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027102156] [2024-06-04 14:54:51,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027102156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:54:51,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:54:51,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:54:51,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264129278] [2024-06-04 14:54:51,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:54:51,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:54:51,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:54:51,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:54:51,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:54:51,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:54:51,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 446 transitions, 4807 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:54:51,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:54:51,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:54:51,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:54:53,566 INFO L124 PetriNetUnfolderBase]: 3740/5981 cut-off events. [2024-06-04 14:54:53,566 INFO L125 PetriNetUnfolderBase]: For 1476840/1476842 co-relation queries the response was YES. [2024-06-04 14:54:53,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67553 conditions, 5981 events. 3740/5981 cut-off events. For 1476840/1476842 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 36454 event pairs, 747 based on Foata normal form. 4/5983 useless extension candidates. Maximal degree in co-relation 67387. Up to 5546 conditions per place. [2024-06-04 14:54:53,652 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 408 selfloop transitions, 63 changer transitions 0/476 dead transitions. [2024-06-04 14:54:53,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 476 transitions, 6732 flow [2024-06-04 14:54:53,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:54:53,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:54:53,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-04 14:54:53,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-04 14:54:53,653 INFO L175 Difference]: Start difference. First operand has 365 places, 446 transitions, 4807 flow. Second operand 8 states and 153 transitions. [2024-06-04 14:54:53,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 476 transitions, 6732 flow [2024-06-04 14:54:57,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 476 transitions, 6557 flow, removed 59 selfloop flow, removed 6 redundant places. [2024-06-04 14:54:57,164 INFO L231 Difference]: Finished difference. Result has 367 places, 455 transitions, 5178 flow [2024-06-04 14:54:57,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4632, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5178, PETRI_PLACES=367, PETRI_TRANSITIONS=455} [2024-06-04 14:54:57,164 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 322 predicate places. [2024-06-04 14:54:57,164 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 455 transitions, 5178 flow [2024-06-04 14:54:57,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:54:57,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:54:57,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:54:57,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-04 14:54:57,165 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:54:57,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:54:57,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1027531419, now seen corresponding path program 6 times [2024-06-04 14:54:57,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:54:57,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636505978] [2024-06-04 14:54:57,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:54:57,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:54:57,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:54:58,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:54:58,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:54:58,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636505978] [2024-06-04 14:54:58,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636505978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:54:58,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:54:58,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:54:58,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62310563] [2024-06-04 14:54:58,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:54:58,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:54:58,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:54:58,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:54:58,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:54:58,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:54:58,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 455 transitions, 5178 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:54:58,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:54:58,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:54:58,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:54:59,843 INFO L124 PetriNetUnfolderBase]: 3734/5971 cut-off events. [2024-06-04 14:54:59,843 INFO L125 PetriNetUnfolderBase]: For 1490736/1490738 co-relation queries the response was YES. [2024-06-04 14:54:59,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67714 conditions, 5971 events. 3734/5971 cut-off events. For 1490736/1490738 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 36357 event pairs, 741 based on Foata normal form. 4/5973 useless extension candidates. Maximal degree in co-relation 67547. Up to 5541 conditions per place. [2024-06-04 14:54:59,929 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 407 selfloop transitions, 64 changer transitions 0/476 dead transitions. [2024-06-04 14:54:59,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 476 transitions, 6699 flow [2024-06-04 14:54:59,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:54:59,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:54:59,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-04 14:54:59,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-04 14:54:59,930 INFO L175 Difference]: Start difference. First operand has 367 places, 455 transitions, 5178 flow. Second operand 8 states and 153 transitions. [2024-06-04 14:54:59,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 476 transitions, 6699 flow [2024-06-04 14:55:02,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 476 transitions, 6416 flow, removed 128 selfloop flow, removed 3 redundant places. [2024-06-04 14:55:02,448 INFO L231 Difference]: Finished difference. Result has 372 places, 455 transitions, 5029 flow [2024-06-04 14:55:02,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4895, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5029, PETRI_PLACES=372, PETRI_TRANSITIONS=455} [2024-06-04 14:55:02,448 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 327 predicate places. [2024-06-04 14:55:02,448 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 455 transitions, 5029 flow [2024-06-04 14:55:02,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:55:02,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:55:02,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:55:02,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-04 14:55:02,449 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:55:02,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:55:02,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1705898907, now seen corresponding path program 3 times [2024-06-04 14:55:02,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:55:02,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932977506] [2024-06-04 14:55:02,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:55:02,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:55:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:55:03,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:55:03,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:55:03,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932977506] [2024-06-04 14:55:03,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932977506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:55:03,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:55:03,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:55:03,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279858183] [2024-06-04 14:55:03,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:55:03,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:55:03,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:55:03,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:55:03,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:55:03,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:55:03,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 455 transitions, 5029 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:55:03,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:55:03,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:55:03,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:55:05,339 INFO L124 PetriNetUnfolderBase]: 3540/5751 cut-off events. [2024-06-04 14:55:05,339 INFO L125 PetriNetUnfolderBase]: For 1510067/1510069 co-relation queries the response was YES. [2024-06-04 14:55:05,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66553 conditions, 5751 events. 3540/5751 cut-off events. For 1510067/1510069 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 35788 event pairs, 692 based on Foata normal form. 3/5710 useless extension candidates. Maximal degree in co-relation 66384. Up to 5180 conditions per place. [2024-06-04 14:55:05,424 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 392 selfloop transitions, 44 changer transitions 0/481 dead transitions. [2024-06-04 14:55:05,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 481 transitions, 6429 flow [2024-06-04 14:55:05,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:55:05,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:55:05,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-04 14:55:05,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-04 14:55:05,425 INFO L175 Difference]: Start difference. First operand has 372 places, 455 transitions, 5029 flow. Second operand 8 states and 156 transitions. [2024-06-04 14:55:05,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 481 transitions, 6429 flow [2024-06-04 14:55:08,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 481 transitions, 6258 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-04 14:55:08,455 INFO L231 Difference]: Finished difference. Result has 374 places, 462 transitions, 5201 flow [2024-06-04 14:55:08,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4858, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5201, PETRI_PLACES=374, PETRI_TRANSITIONS=462} [2024-06-04 14:55:08,456 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 329 predicate places. [2024-06-04 14:55:08,456 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 462 transitions, 5201 flow [2024-06-04 14:55:08,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:55:08,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:55:08,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:55:08,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-04 14:55:08,456 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:55:08,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:55:08,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1029068212, now seen corresponding path program 5 times [2024-06-04 14:55:08,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:55:08,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062279549] [2024-06-04 14:55:08,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:55:08,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:55:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:55:09,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:55:09,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:55:09,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062279549] [2024-06-04 14:55:09,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062279549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:55:09,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:55:09,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:55:09,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029417078] [2024-06-04 14:55:09,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:55:09,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:55:09,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:55:09,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:55:09,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:55:10,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:55:10,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 462 transitions, 5201 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:55:10,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:55:10,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:55:10,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:55:12,151 INFO L124 PetriNetUnfolderBase]: 3926/6314 cut-off events. [2024-06-04 14:55:12,151 INFO L125 PetriNetUnfolderBase]: For 1672451/1672453 co-relation queries the response was YES. [2024-06-04 14:55:12,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72614 conditions, 6314 events. 3926/6314 cut-off events. For 1672451/1672453 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 39370 event pairs, 786 based on Foata normal form. 12/6323 useless extension candidates. Maximal degree in co-relation 72444. Up to 5236 conditions per place. [2024-06-04 14:55:12,251 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 403 selfloop transitions, 112 changer transitions 0/520 dead transitions. [2024-06-04 14:55:12,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 520 transitions, 7079 flow [2024-06-04 14:55:12,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:55:12,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:55:12,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 225 transitions. [2024-06-04 14:55:12,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46487603305785125 [2024-06-04 14:55:12,253 INFO L175 Difference]: Start difference. First operand has 374 places, 462 transitions, 5201 flow. Second operand 11 states and 225 transitions. [2024-06-04 14:55:12,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 520 transitions, 7079 flow [2024-06-04 14:55:15,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 520 transitions, 6935 flow, removed 56 selfloop flow, removed 4 redundant places. [2024-06-04 14:55:15,783 INFO L231 Difference]: Finished difference. Result has 383 places, 471 transitions, 5574 flow [2024-06-04 14:55:15,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5057, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5574, PETRI_PLACES=383, PETRI_TRANSITIONS=471} [2024-06-04 14:55:15,784 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 338 predicate places. [2024-06-04 14:55:15,784 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 471 transitions, 5574 flow [2024-06-04 14:55:15,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:55:15,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:55:15,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:55:15,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-04 14:55:15,784 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:55:15,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:55:15,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1222520274, now seen corresponding path program 6 times [2024-06-04 14:55:15,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:55:15,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820666524] [2024-06-04 14:55:15,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:55:15,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:55:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:55:17,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:55:17,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:55:17,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820666524] [2024-06-04 14:55:17,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820666524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:55:17,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:55:17,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:55:17,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467672644] [2024-06-04 14:55:17,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:55:17,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:55:17,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:55:17,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:55:17,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:55:17,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:55:17,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 471 transitions, 5574 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:55:17,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:55:17,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:55:17,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:55:19,287 INFO L124 PetriNetUnfolderBase]: 4036/6514 cut-off events. [2024-06-04 14:55:19,287 INFO L125 PetriNetUnfolderBase]: For 1717352/1717354 co-relation queries the response was YES. [2024-06-04 14:55:19,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75116 conditions, 6514 events. 4036/6514 cut-off events. For 1717352/1717354 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 41076 event pairs, 816 based on Foata normal form. 12/6523 useless extension candidates. Maximal degree in co-relation 74942. Up to 5553 conditions per place. [2024-06-04 14:55:19,393 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 409 selfloop transitions, 108 changer transitions 0/522 dead transitions. [2024-06-04 14:55:19,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 522 transitions, 6970 flow [2024-06-04 14:55:19,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:55:19,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:55:19,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2024-06-04 14:55:19,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45867768595041325 [2024-06-04 14:55:19,394 INFO L175 Difference]: Start difference. First operand has 383 places, 471 transitions, 5574 flow. Second operand 11 states and 222 transitions. [2024-06-04 14:55:19,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 522 transitions, 6970 flow [2024-06-04 14:55:23,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 522 transitions, 6819 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-04 14:55:23,545 INFO L231 Difference]: Finished difference. Result has 391 places, 476 transitions, 5790 flow [2024-06-04 14:55:23,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5425, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5790, PETRI_PLACES=391, PETRI_TRANSITIONS=476} [2024-06-04 14:55:23,545 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 346 predicate places. [2024-06-04 14:55:23,545 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 476 transitions, 5790 flow [2024-06-04 14:55:23,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:55:23,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:55:23,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:55:23,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-04 14:55:23,546 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:55:23,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:55:23,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1028808742, now seen corresponding path program 7 times [2024-06-04 14:55:23,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:55:23,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347921988] [2024-06-04 14:55:23,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:55:23,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:55:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:55:24,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:55:24,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:55:24,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347921988] [2024-06-04 14:55:24,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347921988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:55:24,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:55:24,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:55:24,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31655679] [2024-06-04 14:55:24,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:55:24,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:55:24,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:55:24,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:55:24,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:55:25,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:55:25,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 476 transitions, 5790 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:55:25,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:55:25,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:55:25,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:55:27,047 INFO L124 PetriNetUnfolderBase]: 4016/6492 cut-off events. [2024-06-04 14:55:27,047 INFO L125 PetriNetUnfolderBase]: For 1675332/1675334 co-relation queries the response was YES. [2024-06-04 14:55:27,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73577 conditions, 6492 events. 4016/6492 cut-off events. For 1675332/1675334 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 41050 event pairs, 807 based on Foata normal form. 12/6501 useless extension candidates. Maximal degree in co-relation 73400. Up to 5521 conditions per place. [2024-06-04 14:55:27,160 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 405 selfloop transitions, 112 changer transitions 0/522 dead transitions. [2024-06-04 14:55:27,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 522 transitions, 7051 flow [2024-06-04 14:55:27,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:55:27,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:55:27,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 221 transitions. [2024-06-04 14:55:27,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45661157024793386 [2024-06-04 14:55:27,161 INFO L175 Difference]: Start difference. First operand has 391 places, 476 transitions, 5790 flow. Second operand 11 states and 221 transitions. [2024-06-04 14:55:27,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 522 transitions, 7051 flow [2024-06-04 14:55:30,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 522 transitions, 6717 flow, removed 71 selfloop flow, removed 7 redundant places. [2024-06-04 14:55:30,672 INFO L231 Difference]: Finished difference. Result has 395 places, 476 transitions, 5686 flow [2024-06-04 14:55:30,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5456, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5686, PETRI_PLACES=395, PETRI_TRANSITIONS=476} [2024-06-04 14:55:30,673 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 350 predicate places. [2024-06-04 14:55:30,673 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 476 transitions, 5686 flow [2024-06-04 14:55:30,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:55:30,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:55:30,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:55:30,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-04 14:55:30,674 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:55:30,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:55:30,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1803720712, now seen corresponding path program 8 times [2024-06-04 14:55:30,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:55:30,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198000437] [2024-06-04 14:55:30,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:55:30,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:55:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:55:32,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:55:32,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:55:32,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198000437] [2024-06-04 14:55:32,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198000437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:55:32,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:55:32,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:55:32,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550678211] [2024-06-04 14:55:32,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:55:32,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:55:32,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:55:32,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:55:32,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:55:32,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:55:32,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 476 transitions, 5686 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:55:32,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:55:32,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:55:32,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:55:34,348 INFO L124 PetriNetUnfolderBase]: 4098/6644 cut-off events. [2024-06-04 14:55:34,348 INFO L125 PetriNetUnfolderBase]: For 1697003/1697005 co-relation queries the response was YES. [2024-06-04 14:55:34,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74308 conditions, 6644 events. 4098/6644 cut-off events. For 1697003/1697005 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 42366 event pairs, 832 based on Foata normal form. 12/6653 useless extension candidates. Maximal degree in co-relation 74131. Up to 5663 conditions per place. [2024-06-04 14:55:34,455 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 412 selfloop transitions, 107 changer transitions 0/524 dead transitions. [2024-06-04 14:55:34,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 524 transitions, 7063 flow [2024-06-04 14:55:34,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:55:34,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:55:34,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 224 transitions. [2024-06-04 14:55:34,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4628099173553719 [2024-06-04 14:55:34,456 INFO L175 Difference]: Start difference. First operand has 395 places, 476 transitions, 5686 flow. Second operand 11 states and 224 transitions. [2024-06-04 14:55:34,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 524 transitions, 7063 flow [2024-06-04 14:55:38,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 524 transitions, 6820 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-04 14:55:38,226 INFO L231 Difference]: Finished difference. Result has 398 places, 478 transitions, 5785 flow [2024-06-04 14:55:38,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5443, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5785, PETRI_PLACES=398, PETRI_TRANSITIONS=478} [2024-06-04 14:55:38,227 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 353 predicate places. [2024-06-04 14:55:38,227 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 478 transitions, 5785 flow [2024-06-04 14:55:38,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:55:38,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:55:38,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:55:38,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-04 14:55:38,227 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:55:38,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:55:38,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1038005512, now seen corresponding path program 9 times [2024-06-04 14:55:38,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:55:38,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111557479] [2024-06-04 14:55:38,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:55:38,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:55:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:55:39,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:55:39,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:55:39,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111557479] [2024-06-04 14:55:39,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111557479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:55:39,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:55:39,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:55:39,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311824073] [2024-06-04 14:55:39,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:55:39,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:55:39,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:55:39,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:55:39,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:55:39,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:55:39,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 478 transitions, 5785 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:55:39,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:55:39,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:55:39,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:55:42,003 INFO L124 PetriNetUnfolderBase]: 4200/6838 cut-off events. [2024-06-04 14:55:42,003 INFO L125 PetriNetUnfolderBase]: For 1807457/1807459 co-relation queries the response was YES. [2024-06-04 14:55:42,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77616 conditions, 6838 events. 4200/6838 cut-off events. For 1807457/1807459 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 44044 event pairs, 858 based on Foata normal form. 12/6847 useless extension candidates. Maximal degree in co-relation 77437. Up to 4361 conditions per place. [2024-06-04 14:55:42,117 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 384 selfloop transitions, 141 changer transitions 0/530 dead transitions. [2024-06-04 14:55:42,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 530 transitions, 7640 flow [2024-06-04 14:55:42,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:55:42,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:55:42,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 224 transitions. [2024-06-04 14:55:42,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4628099173553719 [2024-06-04 14:55:42,118 INFO L175 Difference]: Start difference. First operand has 398 places, 478 transitions, 5785 flow. Second operand 11 states and 224 transitions. [2024-06-04 14:55:42,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 530 transitions, 7640 flow [2024-06-04 14:55:46,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 530 transitions, 7326 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-04 14:55:46,366 INFO L231 Difference]: Finished difference. Result has 402 places, 480 transitions, 5945 flow [2024-06-04 14:55:46,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5471, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5945, PETRI_PLACES=402, PETRI_TRANSITIONS=480} [2024-06-04 14:55:46,367 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 357 predicate places. [2024-06-04 14:55:46,367 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 480 transitions, 5945 flow [2024-06-04 14:55:46,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:55:46,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:55:46,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:55:46,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-04 14:55:46,368 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:55:46,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:55:46,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1796311402, now seen corresponding path program 10 times [2024-06-04 14:55:46,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:55:46,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881793803] [2024-06-04 14:55:46,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:55:46,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:55:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:55:47,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:55:47,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:55:47,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881793803] [2024-06-04 14:55:47,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881793803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:55:47,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:55:47,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:55:47,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746646389] [2024-06-04 14:55:47,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:55:47,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:55:47,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:55:47,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:55:47,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:55:47,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:55:47,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 480 transitions, 5945 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:55:47,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:55:47,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:55:47,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:55:50,244 INFO L124 PetriNetUnfolderBase]: 4180/6806 cut-off events. [2024-06-04 14:55:50,244 INFO L125 PetriNetUnfolderBase]: For 1764394/1764396 co-relation queries the response was YES. [2024-06-04 14:55:50,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76092 conditions, 6806 events. 4180/6806 cut-off events. For 1764394/1764396 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 43882 event pairs, 857 based on Foata normal form. 12/6815 useless extension candidates. Maximal degree in co-relation 75912. Up to 5516 conditions per place. [2024-06-04 14:55:50,345 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 409 selfloop transitions, 113 changer transitions 0/527 dead transitions. [2024-06-04 14:55:50,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 527 transitions, 7218 flow [2024-06-04 14:55:50,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:55:50,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:55:50,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 224 transitions. [2024-06-04 14:55:50,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4628099173553719 [2024-06-04 14:55:50,347 INFO L175 Difference]: Start difference. First operand has 402 places, 480 transitions, 5945 flow. Second operand 11 states and 224 transitions. [2024-06-04 14:55:50,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 527 transitions, 7218 flow [2024-06-04 14:55:54,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 527 transitions, 6975 flow, removed 57 selfloop flow, removed 7 redundant places. [2024-06-04 14:55:54,787 INFO L231 Difference]: Finished difference. Result has 406 places, 480 transitions, 5934 flow [2024-06-04 14:55:54,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5702, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5934, PETRI_PLACES=406, PETRI_TRANSITIONS=480} [2024-06-04 14:55:54,787 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 361 predicate places. [2024-06-04 14:55:54,787 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 480 transitions, 5934 flow [2024-06-04 14:55:54,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:55:54,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:55:54,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:55:54,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-04 14:55:54,788 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:55:54,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:55:54,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1908940431, now seen corresponding path program 4 times [2024-06-04 14:55:54,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:55:54,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086529403] [2024-06-04 14:55:54,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:55:54,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:55:54,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:55:56,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:55:56,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:55:56,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086529403] [2024-06-04 14:55:56,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086529403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:55:56,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:55:56,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:55:56,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481452404] [2024-06-04 14:55:56,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:55:56,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:55:56,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:55:56,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:55:56,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:55:56,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:55:56,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 480 transitions, 5934 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:55:56,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:55:56,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:55:56,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:55:57,704 INFO L124 PetriNetUnfolderBase]: 3902/6478 cut-off events. [2024-06-04 14:55:57,704 INFO L125 PetriNetUnfolderBase]: For 1741208/1741216 co-relation queries the response was YES. [2024-06-04 14:55:57,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74802 conditions, 6478 events. 3902/6478 cut-off events. For 1741208/1741216 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 42826 event pairs, 813 based on Foata normal form. 10/6444 useless extension candidates. Maximal degree in co-relation 74620. Up to 5784 conditions per place. [2024-06-04 14:55:57,817 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 410 selfloop transitions, 54 changer transitions 0/505 dead transitions. [2024-06-04 14:55:57,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 505 transitions, 7397 flow [2024-06-04 14:55:57,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:55:57,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:55:57,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-04 14:55:57,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:55:57,818 INFO L175 Difference]: Start difference. First operand has 406 places, 480 transitions, 5934 flow. Second operand 9 states and 171 transitions. [2024-06-04 14:55:57,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 505 transitions, 7397 flow [2024-06-04 14:56:03,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 505 transitions, 6972 flow, removed 28 selfloop flow, removed 11 redundant places. [2024-06-04 14:56:03,132 INFO L231 Difference]: Finished difference. Result has 404 places, 486 transitions, 5861 flow [2024-06-04 14:56:03,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5509, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5861, PETRI_PLACES=404, PETRI_TRANSITIONS=486} [2024-06-04 14:56:03,132 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 359 predicate places. [2024-06-04 14:56:03,132 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 486 transitions, 5861 flow [2024-06-04 14:56:03,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:56:03,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:56:03,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:56:03,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-04 14:56:03,133 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:56:03,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:56:03,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1908940865, now seen corresponding path program 2 times [2024-06-04 14:56:03,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:56:03,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464821874] [2024-06-04 14:56:03,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:56:03,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:56:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:56:04,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:56:04,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:56:04,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464821874] [2024-06-04 14:56:04,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464821874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:56:04,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:56:04,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:56:04,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857226972] [2024-06-04 14:56:04,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:56:04,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:56:04,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:56:04,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:56:04,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:56:04,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:56:04,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 486 transitions, 5861 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:56:04,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:56:04,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:56:04,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:56:06,412 INFO L124 PetriNetUnfolderBase]: 3952/6547 cut-off events. [2024-06-04 14:56:06,412 INFO L125 PetriNetUnfolderBase]: For 1813746/1813754 co-relation queries the response was YES. [2024-06-04 14:56:06,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76305 conditions, 6547 events. 3952/6547 cut-off events. For 1813746/1813754 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 43292 event pairs, 811 based on Foata normal form. 4/6507 useless extension candidates. Maximal degree in co-relation 76123. Up to 5862 conditions per place. [2024-06-04 14:56:06,526 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 434 selfloop transitions, 43 changer transitions 0/518 dead transitions. [2024-06-04 14:56:06,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 518 transitions, 7846 flow [2024-06-04 14:56:06,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:56:06,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:56:06,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-04 14:56:06,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-04 14:56:06,528 INFO L175 Difference]: Start difference. First operand has 404 places, 486 transitions, 5861 flow. Second operand 9 states and 174 transitions. [2024-06-04 14:56:06,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 518 transitions, 7846 flow [2024-06-04 14:56:11,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 518 transitions, 7695 flow, removed 56 selfloop flow, removed 5 redundant places. [2024-06-04 14:56:11,217 INFO L231 Difference]: Finished difference. Result has 409 places, 496 transitions, 6260 flow [2024-06-04 14:56:11,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5710, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6260, PETRI_PLACES=409, PETRI_TRANSITIONS=496} [2024-06-04 14:56:11,218 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 364 predicate places. [2024-06-04 14:56:11,218 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 496 transitions, 6260 flow [2024-06-04 14:56:11,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:56:11,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:56:11,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:56:11,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-04 14:56:11,219 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:56:11,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:56:11,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1908955311, now seen corresponding path program 1 times [2024-06-04 14:56:11,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:56:11,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777584059] [2024-06-04 14:56:11,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:56:11,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:56:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:56:12,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:56:12,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:56:12,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777584059] [2024-06-04 14:56:12,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777584059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:56:12,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:56:12,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:56:12,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715882737] [2024-06-04 14:56:12,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:56:12,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:56:12,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:56:12,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:56:12,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:56:12,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:56:12,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 496 transitions, 6260 flow. Second operand has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:56:12,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:56:12,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:56:12,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:56:14,791 INFO L124 PetriNetUnfolderBase]: 3720/6251 cut-off events. [2024-06-04 14:56:14,792 INFO L125 PetriNetUnfolderBase]: For 1820559/1820587 co-relation queries the response was YES. [2024-06-04 14:56:14,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75082 conditions, 6251 events. 3720/6251 cut-off events. For 1820559/1820587 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 41923 event pairs, 762 based on Foata normal form. 3/6176 useless extension candidates. Maximal degree in co-relation 74897. Up to 5431 conditions per place. [2024-06-04 14:56:14,891 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 412 selfloop transitions, 19 changer transitions 0/515 dead transitions. [2024-06-04 14:56:14,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 515 transitions, 7260 flow [2024-06-04 14:56:14,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:56:14,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:56:14,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-04 14:56:14,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460227272727273 [2024-06-04 14:56:14,892 INFO L175 Difference]: Start difference. First operand has 409 places, 496 transitions, 6260 flow. Second operand 8 states and 157 transitions. [2024-06-04 14:56:14,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 515 transitions, 7260 flow [2024-06-04 14:56:18,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 515 transitions, 7085 flow, removed 76 selfloop flow, removed 4 redundant places. [2024-06-04 14:56:18,804 INFO L231 Difference]: Finished difference. Result has 413 places, 498 transitions, 6225 flow [2024-06-04 14:56:18,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6087, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6225, PETRI_PLACES=413, PETRI_TRANSITIONS=498} [2024-06-04 14:56:18,805 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 368 predicate places. [2024-06-04 14:56:18,805 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 498 transitions, 6225 flow [2024-06-04 14:56:18,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:56:18,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:56:18,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:56:18,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-04 14:56:18,805 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:56:18,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:56:18,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1908954815, now seen corresponding path program 3 times [2024-06-04 14:56:18,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:56:18,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738106] [2024-06-04 14:56:18,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:56:18,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:56:18,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:56:20,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:56:20,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:56:20,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738106] [2024-06-04 14:56:20,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:56:20,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:56:20,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:56:20,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987574222] [2024-06-04 14:56:20,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:56:20,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:56:20,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:56:20,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:56:20,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:56:20,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:56:20,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 498 transitions, 6225 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:56:20,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:56:20,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:56:20,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:56:21,956 INFO L124 PetriNetUnfolderBase]: 3943/6535 cut-off events. [2024-06-04 14:56:21,956 INFO L125 PetriNetUnfolderBase]: For 1839431/1839439 co-relation queries the response was YES. [2024-06-04 14:56:22,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76307 conditions, 6535 events. 3943/6535 cut-off events. For 1839431/1839439 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 43206 event pairs, 812 based on Foata normal form. 4/6495 useless extension candidates. Maximal degree in co-relation 76120. Up to 5855 conditions per place. [2024-06-04 14:56:22,076 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 430 selfloop transitions, 47 changer transitions 0/518 dead transitions. [2024-06-04 14:56:22,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 518 transitions, 7512 flow [2024-06-04 14:56:22,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:56:22,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:56:22,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-04 14:56:22,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:56:22,077 INFO L175 Difference]: Start difference. First operand has 413 places, 498 transitions, 6225 flow. Second operand 9 states and 171 transitions. [2024-06-04 14:56:22,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 518 transitions, 7512 flow [2024-06-04 14:56:26,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 518 transitions, 7272 flow, removed 104 selfloop flow, removed 6 redundant places. [2024-06-04 14:56:26,412 INFO L231 Difference]: Finished difference. Result has 416 places, 498 transitions, 6086 flow [2024-06-04 14:56:26,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5985, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6086, PETRI_PLACES=416, PETRI_TRANSITIONS=498} [2024-06-04 14:56:26,413 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 371 predicate places. [2024-06-04 14:56:26,413 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 498 transitions, 6086 flow [2024-06-04 14:56:26,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:56:26,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:56:26,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:56:26,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-04 14:56:26,413 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:56:26,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:56:26,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1027523917, now seen corresponding path program 5 times [2024-06-04 14:56:26,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:56:26,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30235198] [2024-06-04 14:56:26,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:56:26,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:56:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:56:27,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:56:27,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:56:27,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30235198] [2024-06-04 14:56:27,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30235198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:56:27,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:56:27,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:56:27,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750920461] [2024-06-04 14:56:27,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:56:27,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:56:27,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:56:27,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:56:27,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:56:27,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:56:27,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 498 transitions, 6086 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:56:27,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:56:27,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:56:27,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:56:29,773 INFO L124 PetriNetUnfolderBase]: 3946/6541 cut-off events. [2024-06-04 14:56:29,774 INFO L125 PetriNetUnfolderBase]: For 1866579/1866607 co-relation queries the response was YES. [2024-06-04 14:56:29,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76389 conditions, 6541 events. 3946/6541 cut-off events. For 1866579/1866607 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 43244 event pairs, 812 based on Foata normal form. 14/6510 useless extension candidates. Maximal degree in co-relation 76201. Up to 5869 conditions per place. [2024-06-04 14:56:29,913 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 440 selfloop transitions, 39 changer transitions 0/520 dead transitions. [2024-06-04 14:56:29,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 520 transitions, 7475 flow [2024-06-04 14:56:29,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:56:29,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:56:29,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-04 14:56:29,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:56:29,915 INFO L175 Difference]: Start difference. First operand has 416 places, 498 transitions, 6086 flow. Second operand 9 states and 171 transitions. [2024-06-04 14:56:29,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 520 transitions, 7475 flow [2024-06-04 14:56:35,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 520 transitions, 7377 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-04 14:56:35,283 INFO L231 Difference]: Finished difference. Result has 418 places, 501 transitions, 6192 flow [2024-06-04 14:56:35,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5988, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6192, PETRI_PLACES=418, PETRI_TRANSITIONS=501} [2024-06-04 14:56:35,284 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 373 predicate places. [2024-06-04 14:56:35,284 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 501 transitions, 6192 flow [2024-06-04 14:56:35,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:56:35,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:56:35,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:56:35,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-04 14:56:35,284 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:56:35,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:56:35,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1908537245, now seen corresponding path program 4 times [2024-06-04 14:56:35,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:56:35,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737955904] [2024-06-04 14:56:35,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:56:35,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:56:35,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:56:36,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:56:36,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:56:36,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737955904] [2024-06-04 14:56:36,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737955904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:56:36,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:56:36,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:56:36,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439129240] [2024-06-04 14:56:36,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:56:36,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:56:36,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:56:36,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:56:36,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:56:36,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:56:36,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 501 transitions, 6192 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:56:36,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:56:36,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:56:36,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:56:38,659 INFO L124 PetriNetUnfolderBase]: 3943/6537 cut-off events. [2024-06-04 14:56:38,659 INFO L125 PetriNetUnfolderBase]: For 1876612/1876636 co-relation queries the response was YES. [2024-06-04 14:56:38,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76348 conditions, 6537 events. 3943/6537 cut-off events. For 1876612/1876636 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 43260 event pairs, 811 based on Foata normal form. 1/6493 useless extension candidates. Maximal degree in co-relation 76159. Up to 5897 conditions per place. [2024-06-04 14:56:38,760 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 454 selfloop transitions, 26 changer transitions 0/521 dead transitions. [2024-06-04 14:56:38,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 521 transitions, 7319 flow [2024-06-04 14:56:38,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:56:38,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:56:38,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-04 14:56:38,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-06-04 14:56:38,761 INFO L175 Difference]: Start difference. First operand has 418 places, 501 transitions, 6192 flow. Second operand 9 states and 166 transitions. [2024-06-04 14:56:38,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 521 transitions, 7319 flow [2024-06-04 14:56:43,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 521 transitions, 7111 flow, removed 57 selfloop flow, removed 7 redundant places. [2024-06-04 14:56:43,304 INFO L231 Difference]: Finished difference. Result has 420 places, 504 transitions, 6170 flow [2024-06-04 14:56:43,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5984, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6170, PETRI_PLACES=420, PETRI_TRANSITIONS=504} [2024-06-04 14:56:43,304 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 375 predicate places. [2024-06-04 14:56:43,304 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 504 transitions, 6170 flow [2024-06-04 14:56:43,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:56:43,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:56:43,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:56:43,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-04 14:56:43,305 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:56:43,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:56:43,305 INFO L85 PathProgramCache]: Analyzing trace with hash -2141197773, now seen corresponding path program 6 times [2024-06-04 14:56:43,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:56:43,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780776171] [2024-06-04 14:56:43,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:56:43,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:56:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:56:44,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:56:44,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:56:44,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780776171] [2024-06-04 14:56:44,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780776171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:56:44,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:56:44,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:56:44,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773113950] [2024-06-04 14:56:44,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:56:44,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:56:44,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:56:44,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:56:44,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:56:44,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:56:44,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 504 transitions, 6170 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:56:44,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:56:44,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:56:44,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:56:46,476 INFO L124 PetriNetUnfolderBase]: 3939/6530 cut-off events. [2024-06-04 14:56:46,476 INFO L125 PetriNetUnfolderBase]: For 1889299/1889323 co-relation queries the response was YES. [2024-06-04 14:56:46,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76165 conditions, 6530 events. 3939/6530 cut-off events. For 1889299/1889323 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 43200 event pairs, 810 based on Foata normal form. 9/6495 useless extension candidates. Maximal degree in co-relation 75975. Up to 5868 conditions per place. [2024-06-04 14:56:46,584 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 447 selfloop transitions, 34 changer transitions 0/522 dead transitions. [2024-06-04 14:56:46,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 522 transitions, 7181 flow [2024-06-04 14:56:46,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:56:46,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:56:46,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-04 14:56:46,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-04 14:56:46,585 INFO L175 Difference]: Start difference. First operand has 420 places, 504 transitions, 6170 flow. Second operand 9 states and 168 transitions. [2024-06-04 14:56:46,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 522 transitions, 7181 flow [2024-06-04 14:56:52,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 522 transitions, 6931 flow, removed 101 selfloop flow, removed 7 redundant places. [2024-06-04 14:56:52,201 INFO L231 Difference]: Finished difference. Result has 422 places, 504 transitions, 5994 flow [2024-06-04 14:56:52,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5920, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5994, PETRI_PLACES=422, PETRI_TRANSITIONS=504} [2024-06-04 14:56:52,201 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 377 predicate places. [2024-06-04 14:56:52,201 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 504 transitions, 5994 flow [2024-06-04 14:56:52,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:56:52,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:56:52,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:56:52,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-04 14:56:52,202 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:56:52,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:56:52,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1070755399, now seen corresponding path program 2 times [2024-06-04 14:56:52,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:56:52,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567425626] [2024-06-04 14:56:52,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:56:52,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:56:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:56:53,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:56:53,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:56:53,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567425626] [2024-06-04 14:56:53,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567425626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:56:53,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:56:53,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:56:53,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052042573] [2024-06-04 14:56:53,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:56:53,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:56:53,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:56:53,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:56:53,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:56:53,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:56:53,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 504 transitions, 5994 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:56:53,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:56:53,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:56:53,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:56:55,065 INFO L124 PetriNetUnfolderBase]: 4042/6656 cut-off events. [2024-06-04 14:56:55,065 INFO L125 PetriNetUnfolderBase]: For 1906066/1906071 co-relation queries the response was YES. [2024-06-04 14:56:55,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76979 conditions, 6656 events. 4042/6656 cut-off events. For 1906066/1906071 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 43738 event pairs, 826 based on Foata normal form. 5/6616 useless extension candidates. Maximal degree in co-relation 76788. Up to 6000 conditions per place. [2024-06-04 14:56:55,183 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 448 selfloop transitions, 30 changer transitions 0/527 dead transitions. [2024-06-04 14:56:55,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 527 transitions, 7139 flow [2024-06-04 14:56:55,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:56:55,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:56:55,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-04 14:56:55,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-04 14:56:55,184 INFO L175 Difference]: Start difference. First operand has 422 places, 504 transitions, 5994 flow. Second operand 8 states and 155 transitions. [2024-06-04 14:56:55,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 527 transitions, 7139 flow [2024-06-04 14:57:01,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 527 transitions, 7059 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 14:57:01,327 INFO L231 Difference]: Finished difference. Result has 422 places, 507 transitions, 6122 flow [2024-06-04 14:57:01,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5914, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6122, PETRI_PLACES=422, PETRI_TRANSITIONS=507} [2024-06-04 14:57:01,328 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 377 predicate places. [2024-06-04 14:57:01,328 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 507 transitions, 6122 flow [2024-06-04 14:57:01,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:57:01,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:57:01,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:57:01,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-04 14:57:01,328 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:57:01,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:57:01,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1361144179, now seen corresponding path program 3 times [2024-06-04 14:57:01,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:57:01,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040659887] [2024-06-04 14:57:01,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:57:01,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:57:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:57:02,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:57:02,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:57:02,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040659887] [2024-06-04 14:57:02,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040659887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:57:02,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:57:02,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:57:02,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321212519] [2024-06-04 14:57:02,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:57:02,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:57:02,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:57:02,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:57:02,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:57:02,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:57:02,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 507 transitions, 6122 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:57:02,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:57:02,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:57:02,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:57:04,188 INFO L124 PetriNetUnfolderBase]: 4047/6658 cut-off events. [2024-06-04 14:57:04,188 INFO L125 PetriNetUnfolderBase]: For 1939802/1939807 co-relation queries the response was YES. [2024-06-04 14:57:04,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77722 conditions, 6658 events. 4047/6658 cut-off events. For 1939802/1939807 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 43685 event pairs, 826 based on Foata normal form. 5/6618 useless extension candidates. Maximal degree in co-relation 77530. Up to 5994 conditions per place. [2024-06-04 14:57:04,303 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 441 selfloop transitions, 41 changer transitions 0/531 dead transitions. [2024-06-04 14:57:04,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 531 transitions, 7685 flow [2024-06-04 14:57:04,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:57:04,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:57:04,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-04 14:57:04,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-04 14:57:04,304 INFO L175 Difference]: Start difference. First operand has 422 places, 507 transitions, 6122 flow. Second operand 8 states and 154 transitions. [2024-06-04 14:57:04,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 531 transitions, 7685 flow [2024-06-04 14:57:10,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 531 transitions, 7499 flow, removed 65 selfloop flow, removed 6 redundant places. [2024-06-04 14:57:10,215 INFO L231 Difference]: Finished difference. Result has 424 places, 513 transitions, 6314 flow [2024-06-04 14:57:10,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5936, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6314, PETRI_PLACES=424, PETRI_TRANSITIONS=513} [2024-06-04 14:57:10,216 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 379 predicate places. [2024-06-04 14:57:10,216 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 513 transitions, 6314 flow [2024-06-04 14:57:10,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:57:10,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:57:10,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:57:10,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-04 14:57:10,216 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:57:10,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:57:10,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1062473501, now seen corresponding path program 7 times [2024-06-04 14:57:10,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:57:10,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395866516] [2024-06-04 14:57:10,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:57:10,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:57:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:57:11,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:57:11,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:57:11,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395866516] [2024-06-04 14:57:11,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395866516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:57:11,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:57:11,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:57:11,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199628016] [2024-06-04 14:57:11,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:57:11,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:57:11,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:57:11,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:57:11,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:57:11,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:57:11,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 513 transitions, 6314 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:57:11,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:57:11,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:57:11,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:57:13,026 INFO L124 PetriNetUnfolderBase]: 4252/6912 cut-off events. [2024-06-04 14:57:13,026 INFO L125 PetriNetUnfolderBase]: For 1966440/1966445 co-relation queries the response was YES. [2024-06-04 14:57:13,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79212 conditions, 6912 events. 4252/6912 cut-off events. For 1966440/1966445 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 44633 event pairs, 882 based on Foata normal form. 4/6913 useless extension candidates. Maximal degree in co-relation 79019. Up to 6477 conditions per place. [2024-06-04 14:57:13,136 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 498 selfloop transitions, 30 changer transitions 0/533 dead transitions. [2024-06-04 14:57:13,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 533 transitions, 7442 flow [2024-06-04 14:57:13,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:57:13,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:57:13,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-04 14:57:13,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-04 14:57:13,138 INFO L175 Difference]: Start difference. First operand has 424 places, 513 transitions, 6314 flow. Second operand 8 states and 150 transitions. [2024-06-04 14:57:13,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 533 transitions, 7442 flow [2024-06-04 14:57:19,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 533 transitions, 7168 flow, removed 121 selfloop flow, removed 4 redundant places. [2024-06-04 14:57:19,203 INFO L231 Difference]: Finished difference. Result has 428 places, 513 transitions, 6106 flow [2024-06-04 14:57:19,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6040, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6106, PETRI_PLACES=428, PETRI_TRANSITIONS=513} [2024-06-04 14:57:19,204 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 383 predicate places. [2024-06-04 14:57:19,204 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 513 transitions, 6106 flow [2024-06-04 14:57:19,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:57:19,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:57:19,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:57:19,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-04 14:57:19,205 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:57:19,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:57:19,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1462324459, now seen corresponding path program 4 times [2024-06-04 14:57:19,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:57:19,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699247575] [2024-06-04 14:57:19,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:57:19,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:57:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:57:20,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:57:20,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:57:20,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699247575] [2024-06-04 14:57:20,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699247575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:57:20,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:57:20,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:57:20,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317407381] [2024-06-04 14:57:20,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:57:20,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:57:20,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:57:20,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:57:20,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:57:20,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:57:20,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 513 transitions, 6106 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:57:20,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:57:20,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:57:20,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:57:22,130 INFO L124 PetriNetUnfolderBase]: 4038/6661 cut-off events. [2024-06-04 14:57:22,130 INFO L125 PetriNetUnfolderBase]: For 1968046/1968051 co-relation queries the response was YES. [2024-06-04 14:57:22,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77665 conditions, 6661 events. 4038/6661 cut-off events. For 1968046/1968051 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 43886 event pairs, 835 based on Foata normal form. 5/6621 useless extension candidates. Maximal degree in co-relation 77470. Up to 5997 conditions per place. [2024-06-04 14:57:22,248 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 455 selfloop transitions, 29 changer transitions 0/533 dead transitions. [2024-06-04 14:57:22,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 533 transitions, 7127 flow [2024-06-04 14:57:22,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:57:22,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:57:22,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-04 14:57:22,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-04 14:57:22,249 INFO L175 Difference]: Start difference. First operand has 428 places, 513 transitions, 6106 flow. Second operand 8 states and 156 transitions. [2024-06-04 14:57:22,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 533 transitions, 7127 flow [2024-06-04 14:57:29,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 533 transitions, 6887 flow, removed 52 selfloop flow, removed 11 redundant places. [2024-06-04 14:57:29,181 INFO L231 Difference]: Finished difference. Result has 425 places, 513 transitions, 5930 flow [2024-06-04 14:57:29,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5866, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5930, PETRI_PLACES=425, PETRI_TRANSITIONS=513} [2024-06-04 14:57:29,182 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 380 predicate places. [2024-06-04 14:57:29,182 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 513 transitions, 5930 flow [2024-06-04 14:57:29,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:57:29,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:57:29,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:57:29,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-04 14:57:29,182 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:57:29,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:57:29,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1062831551, now seen corresponding path program 8 times [2024-06-04 14:57:29,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:57:29,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491681557] [2024-06-04 14:57:29,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:57:29,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:57:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:57:30,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:57:30,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:57:30,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491681557] [2024-06-04 14:57:30,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491681557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:57:30,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:57:30,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:57:30,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463130978] [2024-06-04 14:57:30,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:57:30,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:57:30,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:57:30,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:57:30,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:57:30,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:57:30,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 513 transitions, 5930 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:57:30,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:57:30,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:57:30,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:57:31,928 INFO L124 PetriNetUnfolderBase]: 4243/6900 cut-off events. [2024-06-04 14:57:31,928 INFO L125 PetriNetUnfolderBase]: For 1988165/1988170 co-relation queries the response was YES. [2024-06-04 14:57:32,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78620 conditions, 6900 events. 4243/6900 cut-off events. For 1988165/1988170 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 44500 event pairs, 879 based on Foata normal form. 4/6901 useless extension candidates. Maximal degree in co-relation 78424. Up to 6451 conditions per place. [2024-06-04 14:57:32,042 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 491 selfloop transitions, 35 changer transitions 0/531 dead transitions. [2024-06-04 14:57:32,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 531 transitions, 7070 flow [2024-06-04 14:57:32,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:57:32,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:57:32,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-04 14:57:32,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-04 14:57:32,043 INFO L175 Difference]: Start difference. First operand has 425 places, 513 transitions, 5930 flow. Second operand 8 states and 150 transitions. [2024-06-04 14:57:32,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 531 transitions, 7070 flow [2024-06-04 14:57:39,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 531 transitions, 6900 flow, removed 50 selfloop flow, removed 7 redundant places. [2024-06-04 14:57:39,206 INFO L231 Difference]: Finished difference. Result has 426 places, 513 transitions, 5836 flow [2024-06-04 14:57:39,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5760, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5836, PETRI_PLACES=426, PETRI_TRANSITIONS=513} [2024-06-04 14:57:39,206 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 381 predicate places. [2024-06-04 14:57:39,206 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 513 transitions, 5836 flow [2024-06-04 14:57:39,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:57:39,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:57:39,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:57:39,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-04 14:57:39,207 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:57:39,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:57:39,208 INFO L85 PathProgramCache]: Analyzing trace with hash 734316439, now seen corresponding path program 4 times [2024-06-04 14:57:39,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:57:39,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285577825] [2024-06-04 14:57:39,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:57:39,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:57:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:57:40,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:57:40,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:57:40,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285577825] [2024-06-04 14:57:40,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285577825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:57:40,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:57:40,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:57:40,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426707672] [2024-06-04 14:57:40,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:57:40,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:57:40,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:57:40,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:57:40,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:57:40,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:57:40,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 513 transitions, 5836 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:57:40,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:57:40,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:57:40,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:57:42,123 INFO L124 PetriNetUnfolderBase]: 4024/6635 cut-off events. [2024-06-04 14:57:42,123 INFO L125 PetriNetUnfolderBase]: For 1990165/1990170 co-relation queries the response was YES. [2024-06-04 14:57:42,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76959 conditions, 6635 events. 4024/6635 cut-off events. For 1990165/1990170 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 43672 event pairs, 822 based on Foata normal form. 6/6596 useless extension candidates. Maximal degree in co-relation 76762. Up to 6010 conditions per place. [2024-06-04 14:57:42,236 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 459 selfloop transitions, 23 changer transitions 0/531 dead transitions. [2024-06-04 14:57:42,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 531 transitions, 6869 flow [2024-06-04 14:57:42,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:57:42,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:57:42,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-04 14:57:42,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-04 14:57:42,237 INFO L175 Difference]: Start difference. First operand has 426 places, 513 transitions, 5836 flow. Second operand 8 states and 153 transitions. [2024-06-04 14:57:42,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 531 transitions, 6869 flow [2024-06-04 14:57:48,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 531 transitions, 6673 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-04 14:57:48,986 INFO L231 Difference]: Finished difference. Result has 426 places, 513 transitions, 5693 flow [2024-06-04 14:57:48,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5640, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5693, PETRI_PLACES=426, PETRI_TRANSITIONS=513} [2024-06-04 14:57:48,986 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 381 predicate places. [2024-06-04 14:57:48,986 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 513 transitions, 5693 flow [2024-06-04 14:57:48,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:57:48,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:57:48,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:57:48,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-04 14:57:48,987 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:57:48,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:57:48,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1755752473, now seen corresponding path program 9 times [2024-06-04 14:57:48,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:57:48,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628881515] [2024-06-04 14:57:48,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:57:48,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:57:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:57:49,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:57:49,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:57:49,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628881515] [2024-06-04 14:57:49,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628881515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:57:49,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:57:49,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:57:49,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828765470] [2024-06-04 14:57:49,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:57:49,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:57:49,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:57:49,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:57:49,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:57:50,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:57:50,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 513 transitions, 5693 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:57:50,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:57:50,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:57:50,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:57:51,787 INFO L124 PetriNetUnfolderBase]: 4247/6906 cut-off events. [2024-06-04 14:57:51,787 INFO L125 PetriNetUnfolderBase]: For 2022469/2022474 co-relation queries the response was YES. [2024-06-04 14:57:51,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78605 conditions, 6906 events. 4247/6906 cut-off events. For 2022469/2022474 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 44605 event pairs, 879 based on Foata normal form. 4/6907 useless extension candidates. Maximal degree in co-relation 78407. Up to 6409 conditions per place. [2024-06-04 14:57:51,907 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 474 selfloop transitions, 53 changer transitions 0/532 dead transitions. [2024-06-04 14:57:51,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 532 transitions, 6999 flow [2024-06-04 14:57:51,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:57:51,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:57:51,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-04 14:57:51,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-04 14:57:51,908 INFO L175 Difference]: Start difference. First operand has 426 places, 513 transitions, 5693 flow. Second operand 8 states and 148 transitions. [2024-06-04 14:57:51,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 532 transitions, 6999 flow [2024-06-04 14:57:59,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 532 transitions, 6913 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-04 14:57:59,304 INFO L231 Difference]: Finished difference. Result has 427 places, 516 transitions, 5873 flow [2024-06-04 14:57:59,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5607, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5873, PETRI_PLACES=427, PETRI_TRANSITIONS=516} [2024-06-04 14:57:59,305 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 382 predicate places. [2024-06-04 14:57:59,305 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 516 transitions, 5873 flow [2024-06-04 14:57:59,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:57:59,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:57:59,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:57:59,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-04 14:57:59,305 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:57:59,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:57:59,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1476138865, now seen corresponding path program 5 times [2024-06-04 14:57:59,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:57:59,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304851211] [2024-06-04 14:57:59,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:57:59,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:57:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:58:00,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:58:00,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:58:00,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304851211] [2024-06-04 14:58:00,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304851211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:58:00,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:58:00,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:58:00,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066505196] [2024-06-04 14:58:00,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:58:00,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:58:00,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:58:00,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:58:00,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:58:00,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:58:00,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 516 transitions, 5873 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:58:00,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:58:00,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:58:00,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:58:02,415 INFO L124 PetriNetUnfolderBase]: 4040/6663 cut-off events. [2024-06-04 14:58:02,416 INFO L125 PetriNetUnfolderBase]: For 2051154/2051159 co-relation queries the response was YES. [2024-06-04 14:58:02,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78093 conditions, 6663 events. 4040/6663 cut-off events. For 2051154/2051159 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 43921 event pairs, 818 based on Foata normal form. 6/6624 useless extension candidates. Maximal degree in co-relation 77894. Up to 6014 conditions per place. [2024-06-04 14:58:02,533 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 455 selfloop transitions, 31 changer transitions 0/536 dead transitions. [2024-06-04 14:58:02,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 536 transitions, 7088 flow [2024-06-04 14:58:02,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:58:02,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:58:02,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-04 14:58:02,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:58:02,534 INFO L175 Difference]: Start difference. First operand has 427 places, 516 transitions, 5873 flow. Second operand 8 states and 152 transitions. [2024-06-04 14:58:02,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 536 transitions, 7088 flow [2024-06-04 14:58:08,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 536 transitions, 6854 flow, removed 66 selfloop flow, removed 6 redundant places. [2024-06-04 14:58:08,883 INFO L231 Difference]: Finished difference. Result has 429 places, 520 transitions, 5874 flow [2024-06-04 14:58:08,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5639, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5874, PETRI_PLACES=429, PETRI_TRANSITIONS=520} [2024-06-04 14:58:08,883 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 384 predicate places. [2024-06-04 14:58:08,883 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 520 transitions, 5874 flow [2024-06-04 14:58:08,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:58:08,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:58:08,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:58:08,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-04 14:58:08,884 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:58:08,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:58:08,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1756228137, now seen corresponding path program 6 times [2024-06-04 14:58:08,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:58:08,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205373821] [2024-06-04 14:58:08,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:58:08,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:58:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:58:09,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:58:09,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:58:09,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205373821] [2024-06-04 14:58:09,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205373821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:58:09,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:58:09,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:58:09,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407600530] [2024-06-04 14:58:09,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:58:09,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:58:09,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:58:09,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:58:09,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:58:10,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:58:10,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 520 transitions, 5874 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:58:10,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:58:10,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:58:10,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:58:11,799 INFO L124 PetriNetUnfolderBase]: 4050/6679 cut-off events. [2024-06-04 14:58:11,799 INFO L125 PetriNetUnfolderBase]: For 2083839/2083844 co-relation queries the response was YES. [2024-06-04 14:58:11,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78972 conditions, 6679 events. 4050/6679 cut-off events. For 2083839/2083844 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 44023 event pairs, 818 based on Foata normal form. 6/6640 useless extension candidates. Maximal degree in co-relation 78772. Up to 6004 conditions per place. [2024-06-04 14:58:11,919 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 447 selfloop transitions, 46 changer transitions 0/543 dead transitions. [2024-06-04 14:58:11,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 543 transitions, 7156 flow [2024-06-04 14:58:11,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:58:11,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:58:11,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-04 14:58:11,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-04 14:58:11,920 INFO L175 Difference]: Start difference. First operand has 429 places, 520 transitions, 5874 flow. Second operand 8 states and 153 transitions. [2024-06-04 14:58:11,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 543 transitions, 7156 flow [2024-06-04 14:58:18,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 543 transitions, 6949 flow, removed 75 selfloop flow, removed 6 redundant places. [2024-06-04 14:58:18,503 INFO L231 Difference]: Finished difference. Result has 432 places, 528 transitions, 6033 flow [2024-06-04 14:58:18,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5667, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6033, PETRI_PLACES=432, PETRI_TRANSITIONS=528} [2024-06-04 14:58:18,504 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 387 predicate places. [2024-06-04 14:58:18,504 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 528 transitions, 6033 flow [2024-06-04 14:58:18,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:58:18,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:58:18,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:58:18,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-04 14:58:18,504 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:58:18,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:58:18,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1754918379, now seen corresponding path program 7 times [2024-06-04 14:58:18,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:58:18,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923008897] [2024-06-04 14:58:18,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:58:18,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:58:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:58:19,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:58:19,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:58:19,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923008897] [2024-06-04 14:58:19,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923008897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:58:19,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:58:19,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:58:19,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318063372] [2024-06-04 14:58:19,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:58:19,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:58:19,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:58:19,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:58:19,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:58:19,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:58:19,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 528 transitions, 6033 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:58:19,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:58:19,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:58:19,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:58:21,745 INFO L124 PetriNetUnfolderBase]: 4058/6693 cut-off events. [2024-06-04 14:58:21,745 INFO L125 PetriNetUnfolderBase]: For 2122097/2122104 co-relation queries the response was YES. [2024-06-04 14:58:21,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79967 conditions, 6693 events. 4058/6693 cut-off events. For 2122097/2122104 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 44113 event pairs, 824 based on Foata normal form. 8/6656 useless extension candidates. Maximal degree in co-relation 79765. Up to 6007 conditions per place. [2024-06-04 14:58:21,853 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 448 selfloop transitions, 48 changer transitions 0/546 dead transitions. [2024-06-04 14:58:21,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 546 transitions, 7312 flow [2024-06-04 14:58:21,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:58:21,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:58:21,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-04 14:58:21,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:58:21,855 INFO L175 Difference]: Start difference. First operand has 432 places, 528 transitions, 6033 flow. Second operand 8 states and 152 transitions. [2024-06-04 14:58:21,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 546 transitions, 7312 flow [2024-06-04 14:58:28,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 546 transitions, 7098 flow, removed 91 selfloop flow, removed 4 redundant places. [2024-06-04 14:58:28,501 INFO L231 Difference]: Finished difference. Result has 436 places, 532 transitions, 6104 flow [2024-06-04 14:58:28,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5819, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6104, PETRI_PLACES=436, PETRI_TRANSITIONS=532} [2024-06-04 14:58:28,502 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 391 predicate places. [2024-06-04 14:58:28,502 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 532 transitions, 6104 flow [2024-06-04 14:58:28,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:58:28,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:58:28,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:58:28,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-04 14:58:28,502 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:58:28,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:58:28,502 INFO L85 PathProgramCache]: Analyzing trace with hash -335338049, now seen corresponding path program 10 times [2024-06-04 14:58:28,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:58:28,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276082819] [2024-06-04 14:58:28,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:58:28,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:58:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:58:29,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:58:29,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:58:29,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276082819] [2024-06-04 14:58:29,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276082819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:58:29,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:58:29,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:58:29,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400935383] [2024-06-04 14:58:29,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:58:29,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:58:29,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:58:29,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:58:29,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:58:29,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:58:29,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 532 transitions, 6104 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:58:29,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:58:29,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:58:29,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:58:31,315 INFO L124 PetriNetUnfolderBase]: 4311/6999 cut-off events. [2024-06-04 14:58:31,315 INFO L125 PetriNetUnfolderBase]: For 2196384/2196391 co-relation queries the response was YES. [2024-06-04 14:58:31,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83472 conditions, 6999 events. 4311/6999 cut-off events. For 2196384/2196391 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 45193 event pairs, 900 based on Foata normal form. 6/7002 useless extension candidates. Maximal degree in co-relation 83268. Up to 6406 conditions per place. [2024-06-04 14:58:31,438 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 463 selfloop transitions, 89 changer transitions 0/557 dead transitions. [2024-06-04 14:58:31,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 557 transitions, 8408 flow [2024-06-04 14:58:31,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:58:31,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:58:31,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-04 14:58:31,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-04 14:58:31,439 INFO L175 Difference]: Start difference. First operand has 436 places, 532 transitions, 6104 flow. Second operand 8 states and 151 transitions. [2024-06-04 14:58:31,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 557 transitions, 8408 flow [2024-06-04 14:58:37,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 557 transitions, 8151 flow, removed 83 selfloop flow, removed 6 redundant places. [2024-06-04 14:58:37,767 INFO L231 Difference]: Finished difference. Result has 438 places, 541 transitions, 6517 flow [2024-06-04 14:58:37,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5847, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6517, PETRI_PLACES=438, PETRI_TRANSITIONS=541} [2024-06-04 14:58:37,767 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 393 predicate places. [2024-06-04 14:58:37,768 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 541 transitions, 6517 flow [2024-06-04 14:58:37,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:58:37,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:58:37,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:58:37,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-04 14:58:37,768 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:58:37,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:58:37,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1512278589, now seen corresponding path program 8 times [2024-06-04 14:58:37,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:58:37,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146694648] [2024-06-04 14:58:37,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:58:37,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:58:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:58:38,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:58:38,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:58:38,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146694648] [2024-06-04 14:58:38,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146694648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:58:38,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:58:38,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:58:38,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818244448] [2024-06-04 14:58:38,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:58:38,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:58:38,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:58:38,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:58:38,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:58:39,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:58:39,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 541 transitions, 6517 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:58:39,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:58:39,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:58:39,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:58:40,846 INFO L124 PetriNetUnfolderBase]: 4115/6778 cut-off events. [2024-06-04 14:58:40,846 INFO L125 PetriNetUnfolderBase]: For 2250522/2250529 co-relation queries the response was YES. [2024-06-04 14:58:40,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83643 conditions, 6778 events. 4115/6778 cut-off events. For 2250522/2250529 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 44686 event pairs, 828 based on Foata normal form. 7/6740 useless extension candidates. Maximal degree in co-relation 83438. Up to 5998 conditions per place. [2024-06-04 14:58:40,980 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 422 selfloop transitions, 96 changer transitions 0/571 dead transitions. [2024-06-04 14:58:40,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 571 transitions, 8727 flow [2024-06-04 14:58:40,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:58:40,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:58:40,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-04 14:58:40,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-04 14:58:40,981 INFO L175 Difference]: Start difference. First operand has 438 places, 541 transitions, 6517 flow. Second operand 8 states and 155 transitions. [2024-06-04 14:58:40,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 571 transitions, 8727 flow [2024-06-04 14:58:47,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 571 transitions, 8397 flow, removed 103 selfloop flow, removed 4 redundant places. [2024-06-04 14:58:47,849 INFO L231 Difference]: Finished difference. Result has 443 places, 558 transitions, 7023 flow [2024-06-04 14:58:47,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6191, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7023, PETRI_PLACES=443, PETRI_TRANSITIONS=558} [2024-06-04 14:58:47,849 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 398 predicate places. [2024-06-04 14:58:47,850 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 558 transitions, 7023 flow [2024-06-04 14:58:47,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:58:47,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:58:47,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:58:47,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-04 14:58:47,850 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:58:47,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:58:47,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1518267789, now seen corresponding path program 9 times [2024-06-04 14:58:47,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:58:47,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297479061] [2024-06-04 14:58:47,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:58:47,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:58:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:58:49,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:58:49,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:58:49,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297479061] [2024-06-04 14:58:49,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297479061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:58:49,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:58:49,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:58:49,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265789763] [2024-06-04 14:58:49,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:58:49,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:58:49,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:58:49,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:58:49,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:58:49,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:58:49,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 558 transitions, 7023 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:58:49,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:58:49,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:58:49,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:58:50,959 INFO L124 PetriNetUnfolderBase]: 4123/6792 cut-off events. [2024-06-04 14:58:50,959 INFO L125 PetriNetUnfolderBase]: For 2288624/2288631 co-relation queries the response was YES. [2024-06-04 14:58:51,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84278 conditions, 6792 events. 4123/6792 cut-off events. For 2288624/2288631 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 44850 event pairs, 829 based on Foata normal form. 8/6755 useless extension candidates. Maximal degree in co-relation 84071. Up to 6069 conditions per place. [2024-06-04 14:58:51,116 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 462 selfloop transitions, 62 changer transitions 0/577 dead transitions. [2024-06-04 14:58:51,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 577 transitions, 8679 flow [2024-06-04 14:58:51,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:58:51,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:58:51,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-04 14:58:51,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-04 14:58:51,118 INFO L175 Difference]: Start difference. First operand has 443 places, 558 transitions, 7023 flow. Second operand 8 states and 154 transitions. [2024-06-04 14:58:51,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 577 transitions, 8679 flow [2024-06-04 14:58:59,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 577 transitions, 8343 flow, removed 161 selfloop flow, removed 2 redundant places. [2024-06-04 14:58:59,170 INFO L231 Difference]: Finished difference. Result has 450 places, 564 transitions, 7132 flow [2024-06-04 14:58:59,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6759, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7132, PETRI_PLACES=450, PETRI_TRANSITIONS=564} [2024-06-04 14:58:59,171 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 405 predicate places. [2024-06-04 14:58:59,171 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 564 transitions, 7132 flow [2024-06-04 14:58:59,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:58:59,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:58:59,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:58:59,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-04 14:58:59,172 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:58:59,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:58:59,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1755098303, now seen corresponding path program 11 times [2024-06-04 14:58:59,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:58:59,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147599852] [2024-06-04 14:58:59,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:58:59,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:58:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:59:00,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:59:00,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:59:00,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147599852] [2024-06-04 14:59:00,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147599852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:59:00,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:59:00,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:59:00,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468455369] [2024-06-04 14:59:00,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:59:00,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:59:00,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:59:00,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:59:00,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:59:00,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:59:00,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 564 transitions, 7132 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:59:00,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:59:00,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:59:00,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:59:02,384 INFO L124 PetriNetUnfolderBase]: 4344/7043 cut-off events. [2024-06-04 14:59:02,384 INFO L125 PetriNetUnfolderBase]: For 2295311/2295318 co-relation queries the response was YES. [2024-06-04 14:59:02,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85043 conditions, 7043 events. 4344/7043 cut-off events. For 2295311/2295318 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 45485 event pairs, 891 based on Foata normal form. 6/7046 useless extension candidates. Maximal degree in co-relation 84833. Up to 6455 conditions per place. [2024-06-04 14:59:02,516 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 483 selfloop transitions, 91 changer transitions 0/579 dead transitions. [2024-06-04 14:59:02,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 579 transitions, 8698 flow [2024-06-04 14:59:02,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:59:02,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:59:02,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-04 14:59:02,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42329545454545453 [2024-06-04 14:59:02,517 INFO L175 Difference]: Start difference. First operand has 450 places, 564 transitions, 7132 flow. Second operand 8 states and 149 transitions. [2024-06-04 14:59:02,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 579 transitions, 8698 flow [2024-06-04 14:59:10,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 579 transitions, 8356 flow, removed 121 selfloop flow, removed 5 redundant places. [2024-06-04 14:59:10,684 INFO L231 Difference]: Finished difference. Result has 453 places, 564 transitions, 6978 flow [2024-06-04 14:59:10,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6790, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6978, PETRI_PLACES=453, PETRI_TRANSITIONS=564} [2024-06-04 14:59:10,685 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 408 predicate places. [2024-06-04 14:59:10,685 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 564 transitions, 6978 flow [2024-06-04 14:59:10,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:59:10,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:59:10,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:59:10,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-04 14:59:10,685 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:59:10,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:59:10,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1290366639, now seen corresponding path program 10 times [2024-06-04 14:59:10,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:59:10,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151058699] [2024-06-04 14:59:10,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:59:10,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:59:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:59:11,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:59:11,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:59:11,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151058699] [2024-06-04 14:59:11,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151058699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:59:11,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:59:11,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:59:11,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168053650] [2024-06-04 14:59:11,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:59:11,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:59:11,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:59:11,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:59:11,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:59:12,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:59:12,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 564 transitions, 6978 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:59:12,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:59:12,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:59:12,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:59:13,892 INFO L124 PetriNetUnfolderBase]: 4116/6782 cut-off events. [2024-06-04 14:59:13,893 INFO L125 PetriNetUnfolderBase]: For 2293716/2293723 co-relation queries the response was YES. [2024-06-04 14:59:13,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83284 conditions, 6782 events. 4116/6782 cut-off events. For 2293716/2293723 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 44791 event pairs, 827 based on Foata normal form. 7/6744 useless extension candidates. Maximal degree in co-relation 83073. Up to 6001 conditions per place. [2024-06-04 14:59:14,020 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 422 selfloop transitions, 102 changer transitions 0/577 dead transitions. [2024-06-04 14:59:14,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 577 transitions, 8647 flow [2024-06-04 14:59:14,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:59:14,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:59:14,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-04 14:59:14,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-04 14:59:14,021 INFO L175 Difference]: Start difference. First operand has 453 places, 564 transitions, 6978 flow. Second operand 8 states and 154 transitions. [2024-06-04 14:59:14,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 577 transitions, 8647 flow [2024-06-04 14:59:22,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 577 transitions, 8395 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-04 14:59:22,959 INFO L231 Difference]: Finished difference. Result has 455 places, 564 transitions, 6936 flow [2024-06-04 14:59:22,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6726, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6936, PETRI_PLACES=455, PETRI_TRANSITIONS=564} [2024-06-04 14:59:22,960 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 410 predicate places. [2024-06-04 14:59:22,960 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 564 transitions, 6936 flow [2024-06-04 14:59:22,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:59:22,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:59:22,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:59:22,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-04 14:59:22,960 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:59:22,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:59:22,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1748432063, now seen corresponding path program 12 times [2024-06-04 14:59:22,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:59:22,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417764315] [2024-06-04 14:59:22,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:59:22,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:59:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:59:23,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:59:23,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:59:23,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417764315] [2024-06-04 14:59:23,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417764315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:59:23,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:59:23,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:59:23,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694960100] [2024-06-04 14:59:23,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:59:23,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:59:23,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:59:23,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:59:23,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:59:24,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:59:24,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 564 transitions, 6936 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:59:24,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:59:24,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:59:24,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:59:25,874 INFO L124 PetriNetUnfolderBase]: 4335/7033 cut-off events. [2024-06-04 14:59:25,875 INFO L125 PetriNetUnfolderBase]: For 2315880/2315887 co-relation queries the response was YES. [2024-06-04 14:59:25,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84448 conditions, 7033 events. 4335/7033 cut-off events. For 2315880/2315887 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 45410 event pairs, 894 based on Foata normal form. 6/7036 useless extension candidates. Maximal degree in co-relation 84236. Up to 6446 conditions per place. [2024-06-04 14:59:26,017 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 483 selfloop transitions, 91 changer transitions 0/579 dead transitions. [2024-06-04 14:59:26,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 579 transitions, 8212 flow [2024-06-04 14:59:26,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:59:26,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:59:26,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-04 14:59:26,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-04 14:59:26,018 INFO L175 Difference]: Start difference. First operand has 455 places, 564 transitions, 6936 flow. Second operand 8 states and 148 transitions. [2024-06-04 14:59:26,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 579 transitions, 8212 flow [2024-06-04 14:59:34,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 579 transitions, 7821 flow, removed 67 selfloop flow, removed 8 redundant places. [2024-06-04 14:59:34,166 INFO L231 Difference]: Finished difference. Result has 455 places, 564 transitions, 6733 flow [2024-06-04 14:59:34,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6545, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6733, PETRI_PLACES=455, PETRI_TRANSITIONS=564} [2024-06-04 14:59:34,166 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 410 predicate places. [2024-06-04 14:59:34,166 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 564 transitions, 6733 flow [2024-06-04 14:59:34,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:59:34,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:59:34,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:59:34,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-04 14:59:34,167 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:59:34,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:59:34,167 INFO L85 PathProgramCache]: Analyzing trace with hash -335100465, now seen corresponding path program 11 times [2024-06-04 14:59:34,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:59:34,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971964681] [2024-06-04 14:59:34,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:59:34,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:59:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:59:35,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:59:35,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:59:35,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971964681] [2024-06-04 14:59:35,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971964681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:59:35,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:59:35,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:59:35,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861094572] [2024-06-04 14:59:35,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:59:35,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:59:35,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:59:35,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:59:35,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:59:35,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:59:35,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 564 transitions, 6733 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:59:35,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:59:35,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:59:35,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:59:37,480 INFO L124 PetriNetUnfolderBase]: 4105/6766 cut-off events. [2024-06-04 14:59:37,481 INFO L125 PetriNetUnfolderBase]: For 2314894/2314901 co-relation queries the response was YES. [2024-06-04 14:59:37,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82566 conditions, 6766 events. 4105/6766 cut-off events. For 2314894/2314901 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 44689 event pairs, 823 based on Foata normal form. 7/6728 useless extension candidates. Maximal degree in co-relation 82355. Up to 6055 conditions per place. [2024-06-04 14:59:37,600 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 465 selfloop transitions, 61 changer transitions 0/579 dead transitions. [2024-06-04 14:59:37,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 579 transitions, 8182 flow [2024-06-04 14:59:37,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:59:37,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:59:37,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-04 14:59:37,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-04 14:59:37,601 INFO L175 Difference]: Start difference. First operand has 455 places, 564 transitions, 6733 flow. Second operand 8 states and 153 transitions. [2024-06-04 14:59:37,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 579 transitions, 8182 flow [2024-06-04 14:59:47,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 579 transitions, 7860 flow, removed 55 selfloop flow, removed 8 redundant places. [2024-06-04 14:59:47,154 INFO L231 Difference]: Finished difference. Result has 456 places, 566 transitions, 6626 flow [2024-06-04 14:59:47,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6435, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6626, PETRI_PLACES=456, PETRI_TRANSITIONS=566} [2024-06-04 14:59:47,155 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 411 predicate places. [2024-06-04 14:59:47,155 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 566 transitions, 6626 flow [2024-06-04 14:59:47,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:59:47,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:59:47,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:59:47,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-04 14:59:47,156 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:59:47,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:59:47,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1518743019, now seen corresponding path program 12 times [2024-06-04 14:59:47,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:59:47,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467012915] [2024-06-04 14:59:47,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:59:47,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:59:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:59:48,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:59:48,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:59:48,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467012915] [2024-06-04 14:59:48,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467012915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:59:48,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:59:48,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:59:48,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569264853] [2024-06-04 14:59:48,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:59:48,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:59:48,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:59:48,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:59:48,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:59:48,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:59:48,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 566 transitions, 6626 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:59:48,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:59:48,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:59:48,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:59:50,400 INFO L124 PetriNetUnfolderBase]: 4101/6764 cut-off events. [2024-06-04 14:59:50,400 INFO L125 PetriNetUnfolderBase]: For 2332529/2332536 co-relation queries the response was YES. [2024-06-04 14:59:50,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82244 conditions, 6764 events. 4101/6764 cut-off events. For 2332529/2332536 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 44716 event pairs, 824 based on Foata normal form. 8/6727 useless extension candidates. Maximal degree in co-relation 82031. Up to 6067 conditions per place. [2024-06-04 14:59:50,530 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 478 selfloop transitions, 48 changer transitions 0/579 dead transitions. [2024-06-04 14:59:50,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 579 transitions, 7715 flow [2024-06-04 14:59:50,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:59:50,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:59:50,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-04 14:59:50,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:59:50,531 INFO L175 Difference]: Start difference. First operand has 456 places, 566 transitions, 6626 flow. Second operand 8 states and 152 transitions. [2024-06-04 14:59:50,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 579 transitions, 7715 flow [2024-06-04 14:59:58,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 579 transitions, 7464 flow, removed 76 selfloop flow, removed 5 redundant places. [2024-06-04 14:59:58,536 INFO L231 Difference]: Finished difference. Result has 459 places, 566 transitions, 6478 flow [2024-06-04 14:59:58,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6375, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=518, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6478, PETRI_PLACES=459, PETRI_TRANSITIONS=566} [2024-06-04 14:59:58,537 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 414 predicate places. [2024-06-04 14:59:58,537 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 566 transitions, 6478 flow [2024-06-04 14:59:58,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 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) [2024-06-04 14:59:58,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:59:58,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:59:58,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-04 14:59:58,537 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:59:58,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:59:58,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1534125432, now seen corresponding path program 11 times [2024-06-04 14:59:58,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:59:58,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838817308] [2024-06-04 14:59:58,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:59:58,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:59:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:00:00,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:00:00,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:00:00,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838817308] [2024-06-04 15:00:00,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838817308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:00:00,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:00:00,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:00:00,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89231128] [2024-06-04 15:00:00,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:00:00,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:00:00,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:00:00,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:00:00,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:00:00,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 15:00:00,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 566 transitions, 6478 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:00:00,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:00:00,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 15:00:00,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:00:02,783 INFO L124 PetriNetUnfolderBase]: 4497/7332 cut-off events. [2024-06-04 15:00:02,783 INFO L125 PetriNetUnfolderBase]: For 2533111/2533114 co-relation queries the response was YES. [2024-06-04 15:00:02,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87771 conditions, 7332 events. 4497/7332 cut-off events. For 2533111/2533114 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 48074 event pairs, 912 based on Foata normal form. 12/7340 useless extension candidates. Maximal degree in co-relation 87557. Up to 6085 conditions per place. [2024-06-04 15:00:02,917 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 489 selfloop transitions, 127 changer transitions 0/621 dead transitions. [2024-06-04 15:00:02,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 621 transitions, 8642 flow [2024-06-04 15:00:02,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:00:02,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:00:02,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-06-04 15:00:02,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4607438016528926 [2024-06-04 15:00:02,919 INFO L175 Difference]: Start difference. First operand has 459 places, 566 transitions, 6478 flow. Second operand 11 states and 223 transitions. [2024-06-04 15:00:02,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 621 transitions, 8642 flow [2024-06-04 15:00:13,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 621 transitions, 8524 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-04 15:00:13,443 INFO L231 Difference]: Finished difference. Result has 465 places, 575 transitions, 6947 flow [2024-06-04 15:00:13,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6360, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6947, PETRI_PLACES=465, PETRI_TRANSITIONS=575} [2024-06-04 15:00:13,444 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 420 predicate places. [2024-06-04 15:00:13,444 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 575 transitions, 6947 flow [2024-06-04 15:00:13,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:00:13,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:00:13,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:00:13,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-04 15:00:13,445 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:00:13,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:00:13,445 INFO L85 PathProgramCache]: Analyzing trace with hash -580850380, now seen corresponding path program 12 times [2024-06-04 15:00:13,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:00:13,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512198515] [2024-06-04 15:00:13,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:00:13,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:00:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:00:14,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:00:14,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:00:14,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512198515] [2024-06-04 15:00:14,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512198515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:00:14,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:00:14,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:00:14,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609687452] [2024-06-04 15:00:14,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:00:14,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:00:14,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:00:14,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:00:14,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:00:15,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 15:00:15,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 575 transitions, 6947 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:00:15,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:00:15,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 15:00:15,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:00:17,833 INFO L124 PetriNetUnfolderBase]: 4538/7413 cut-off events. [2024-06-04 15:00:17,833 INFO L125 PetriNetUnfolderBase]: For 2582979/2582982 co-relation queries the response was YES. [2024-06-04 15:00:18,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89613 conditions, 7413 events. 4538/7413 cut-off events. For 2582979/2582982 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 48847 event pairs, 932 based on Foata normal form. 12/7421 useless extension candidates. Maximal degree in co-relation 89396. Up to 6230 conditions per place. [2024-06-04 15:00:18,248 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 492 selfloop transitions, 124 changer transitions 0/621 dead transitions. [2024-06-04 15:00:18,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 621 transitions, 8938 flow [2024-06-04 15:00:18,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:00:18,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:00:18,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 221 transitions. [2024-06-04 15:00:18,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45661157024793386 [2024-06-04 15:00:18,249 INFO L175 Difference]: Start difference. First operand has 465 places, 575 transitions, 6947 flow. Second operand 11 states and 221 transitions. [2024-06-04 15:00:18,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 621 transitions, 8938 flow [2024-06-04 15:00:29,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 621 transitions, 8798 flow, removed 60 selfloop flow, removed 4 redundant places. [2024-06-04 15:00:29,702 INFO L231 Difference]: Finished difference. Result has 472 places, 576 transitions, 7156 flow [2024-06-04 15:00:29,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6813, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7156, PETRI_PLACES=472, PETRI_TRANSITIONS=576} [2024-06-04 15:00:29,703 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 427 predicate places. [2024-06-04 15:00:29,703 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 576 transitions, 7156 flow [2024-06-04 15:00:29,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:00:29,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:00:29,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:00:29,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-04 15:00:29,704 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:00:29,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:00:29,704 INFO L85 PathProgramCache]: Analyzing trace with hash -588259690, now seen corresponding path program 13 times [2024-06-04 15:00:29,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:00:29,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009685831] [2024-06-04 15:00:29,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:00:29,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:00:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:00:31,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:00:31,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:00:31,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009685831] [2024-06-04 15:00:31,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009685831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:00:31,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:00:31,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:00:31,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227869867] [2024-06-04 15:00:31,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:00:31,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:00:31,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:00:31,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:00:31,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:00:31,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 15:00:31,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 576 transitions, 7156 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:00:31,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:00:31,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 15:00:31,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:00:34,290 INFO L124 PetriNetUnfolderBase]: 4518/7381 cut-off events. [2024-06-04 15:00:34,290 INFO L125 PetriNetUnfolderBase]: For 2513439/2513442 co-relation queries the response was YES. [2024-06-04 15:00:34,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87575 conditions, 7381 events. 4518/7381 cut-off events. For 2513439/2513442 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 48574 event pairs, 923 based on Foata normal form. 12/7389 useless extension candidates. Maximal degree in co-relation 87356. Up to 6334 conditions per place. [2024-06-04 15:00:34,423 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 492 selfloop transitions, 121 changer transitions 0/618 dead transitions. [2024-06-04 15:00:34,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 618 transitions, 8592 flow [2024-06-04 15:00:34,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:00:34,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:00:34,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 217 transitions. [2024-06-04 15:00:34,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44834710743801653 [2024-06-04 15:00:34,425 INFO L175 Difference]: Start difference. First operand has 472 places, 576 transitions, 7156 flow. Second operand 11 states and 217 transitions. [2024-06-04 15:00:34,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 618 transitions, 8592 flow [2024-06-04 15:00:46,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 618 transitions, 8198 flow, removed 71 selfloop flow, removed 9 redundant places. [2024-06-04 15:00:46,465 INFO L231 Difference]: Finished difference. Result has 474 places, 576 transitions, 7010 flow [2024-06-04 15:00:46,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6762, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7010, PETRI_PLACES=474, PETRI_TRANSITIONS=576} [2024-06-04 15:00:46,466 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 429 predicate places. [2024-06-04 15:00:46,466 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 576 transitions, 7010 flow [2024-06-04 15:00:46,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:00:46,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:00:46,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:00:46,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-04 15:00:46,466 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:00:46,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:00:46,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1778958698, now seen corresponding path program 14 times [2024-06-04 15:00:46,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:00:46,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104497501] [2024-06-04 15:00:46,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:00:46,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:00:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:00:47,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:00:47,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:00:47,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104497501] [2024-06-04 15:00:47,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104497501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:00:47,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:00:47,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:00:47,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962675956] [2024-06-04 15:00:47,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:00:47,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:00:47,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:00:47,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:00:47,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:00:47,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 15:00:47,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 576 transitions, 7010 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:00:47,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:00:47,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 15:00:47,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:00:50,819 INFO L124 PetriNetUnfolderBase]: 4600/7543 cut-off events. [2024-06-04 15:00:50,819 INFO L125 PetriNetUnfolderBase]: For 2541151/2541154 co-relation queries the response was YES. [2024-06-04 15:00:50,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88327 conditions, 7543 events. 4600/7543 cut-off events. For 2541151/2541154 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 49938 event pairs, 848 based on Foata normal form. 12/7551 useless extension candidates. Maximal degree in co-relation 88107. Up to 4011 conditions per place. [2024-06-04 15:00:50,991 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 442 selfloop transitions, 177 changer transitions 0/624 dead transitions. [2024-06-04 15:00:50,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 624 transitions, 8888 flow [2024-06-04 15:00:50,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:00:50,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:00:50,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-06-04 15:00:50,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 15:00:50,992 INFO L175 Difference]: Start difference. First operand has 474 places, 576 transitions, 7010 flow. Second operand 11 states and 220 transitions. [2024-06-04 15:00:50,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 624 transitions, 8888 flow [2024-06-04 15:01:02,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 624 transitions, 8629 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-04 15:01:02,101 INFO L231 Difference]: Finished difference. Result has 477 places, 578 transitions, 7321 flow [2024-06-04 15:01:02,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6751, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7321, PETRI_PLACES=477, PETRI_TRANSITIONS=578} [2024-06-04 15:01:02,101 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 432 predicate places. [2024-06-04 15:01:02,101 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 578 transitions, 7321 flow [2024-06-04 15:01:02,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:01:02,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:01:02,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:01:02,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-04 15:01:02,102 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:01:02,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:01:02,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1703584608, now seen corresponding path program 15 times [2024-06-04 15:01:02,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:01:02,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858317996] [2024-06-04 15:01:02,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:01:02,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:01:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:01:03,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:01:03,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:01:03,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858317996] [2024-06-04 15:01:03,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858317996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:01:03,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:01:03,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:01:03,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022417239] [2024-06-04 15:01:03,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:01:03,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:01:03,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:01:03,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:01:03,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:01:03,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 15:01:03,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 578 transitions, 7321 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:01:03,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:01:03,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 15:01:03,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:01:06,847 INFO L124 PetriNetUnfolderBase]: 4771/7856 cut-off events. [2024-06-04 15:01:06,848 INFO L125 PetriNetUnfolderBase]: For 2695237/2695240 co-relation queries the response was YES. [2024-06-04 15:01:07,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93783 conditions, 7856 events. 4771/7856 cut-off events. For 2695237/2695240 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 52946 event pairs, 1002 based on Foata normal form. 12/7864 useless extension candidates. Maximal degree in co-relation 93561. Up to 6624 conditions per place. [2024-06-04 15:01:07,148 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 506 selfloop transitions, 118 changer transitions 0/629 dead transitions. [2024-06-04 15:01:07,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 629 transitions, 9498 flow [2024-06-04 15:01:07,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:01:07,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:01:07,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 225 transitions. [2024-06-04 15:01:07,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46487603305785125 [2024-06-04 15:01:07,149 INFO L175 Difference]: Start difference. First operand has 477 places, 578 transitions, 7321 flow. Second operand 11 states and 225 transitions. [2024-06-04 15:01:07,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 629 transitions, 9498 flow [2024-06-04 15:01:17,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 629 transitions, 9145 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-04 15:01:17,891 INFO L231 Difference]: Finished difference. Result has 481 places, 584 transitions, 7476 flow [2024-06-04 15:01:17,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6975, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7476, PETRI_PLACES=481, PETRI_TRANSITIONS=584} [2024-06-04 15:01:17,892 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 436 predicate places. [2024-06-04 15:01:17,892 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 584 transitions, 7476 flow [2024-06-04 15:01:17,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:01:17,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:01:17,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:01:17,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-04 15:01:17,892 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:01:17,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:01:17,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1446824628, now seen corresponding path program 16 times [2024-06-04 15:01:17,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:01:17,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115098956] [2024-06-04 15:01:17,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:01:17,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:01:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:01:19,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:01:19,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:01:19,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115098956] [2024-06-04 15:01:19,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115098956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:01:19,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:01:19,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:01:19,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839321984] [2024-06-04 15:01:19,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:01:19,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:01:19,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:01:19,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:01:19,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:01:19,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 15:01:19,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 584 transitions, 7476 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:01:19,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:01:19,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 15:01:19,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:01:22,627 INFO L124 PetriNetUnfolderBase]: 4751/7824 cut-off events. [2024-06-04 15:01:22,627 INFO L125 PetriNetUnfolderBase]: For 2628889/2628892 co-relation queries the response was YES. [2024-06-04 15:01:22,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91464 conditions, 7824 events. 4751/7824 cut-off events. For 2628889/2628892 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 52742 event pairs, 993 based on Foata normal form. 12/7832 useless extension candidates. Maximal degree in co-relation 91240. Up to 6728 conditions per place. [2024-06-04 15:01:22,758 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 506 selfloop transitions, 115 changer transitions 0/626 dead transitions. [2024-06-04 15:01:22,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 626 transitions, 8928 flow [2024-06-04 15:01:22,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:01:22,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:01:22,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 221 transitions. [2024-06-04 15:01:22,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45661157024793386 [2024-06-04 15:01:22,760 INFO L175 Difference]: Start difference. First operand has 481 places, 584 transitions, 7476 flow. Second operand 11 states and 221 transitions. [2024-06-04 15:01:22,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 626 transitions, 8928 flow [2024-06-04 15:01:35,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 626 transitions, 8577 flow, removed 83 selfloop flow, removed 6 redundant places. [2024-06-04 15:01:35,352 INFO L231 Difference]: Finished difference. Result has 486 places, 584 transitions, 7361 flow [2024-06-04 15:01:35,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7125, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7361, PETRI_PLACES=486, PETRI_TRANSITIONS=584} [2024-06-04 15:01:35,353 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 441 predicate places. [2024-06-04 15:01:35,353 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 584 transitions, 7361 flow [2024-06-04 15:01:35,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:01:35,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:01:35,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:01:35,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-04 15:01:35,354 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:01:35,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:01:35,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1092343018, now seen corresponding path program 17 times [2024-06-04 15:01:35,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:01:35,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507845543] [2024-06-04 15:01:35,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:01:35,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:01:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:01:36,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:01:36,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:01:36,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507845543] [2024-06-04 15:01:36,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507845543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:01:36,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:01:36,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:01:36,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956562279] [2024-06-04 15:01:36,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:01:36,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:01:36,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:01:36,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:01:36,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:01:36,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 15:01:36,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 584 transitions, 7361 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:01:36,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:01:36,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 15:01:36,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:01:40,056 INFO L124 PetriNetUnfolderBase]: 4792/7905 cut-off events. [2024-06-04 15:01:40,057 INFO L125 PetriNetUnfolderBase]: For 2648077/2648080 co-relation queries the response was YES. [2024-06-04 15:01:40,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91791 conditions, 7905 events. 4792/7905 cut-off events. For 2648077/2648080 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 53498 event pairs, 998 based on Foata normal form. 12/7913 useless extension candidates. Maximal degree in co-relation 91566. Up to 6272 conditions per place. [2024-06-04 15:01:40,199 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 497 selfloop transitions, 128 changer transitions 0/630 dead transitions. [2024-06-04 15:01:40,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 630 transitions, 9239 flow [2024-06-04 15:01:40,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:01:40,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:01:40,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-06-04 15:01:40,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4607438016528926 [2024-06-04 15:01:40,200 INFO L175 Difference]: Start difference. First operand has 486 places, 584 transitions, 7361 flow. Second operand 11 states and 223 transitions. [2024-06-04 15:01:40,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 630 transitions, 9239 flow [2024-06-04 15:01:52,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 630 transitions, 8992 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-04 15:01:52,517 INFO L231 Difference]: Finished difference. Result has 488 places, 585 transitions, 7474 flow [2024-06-04 15:01:52,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7114, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7474, PETRI_PLACES=488, PETRI_TRANSITIONS=585} [2024-06-04 15:01:52,517 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 443 predicate places. [2024-06-04 15:01:52,517 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 585 transitions, 7474 flow [2024-06-04 15:01:52,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:01:52,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:01:52,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:01:52,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-04 15:01:52,518 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:01:52,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:01:52,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1276857780, now seen corresponding path program 18 times [2024-06-04 15:01:52,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:01:52,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291732354] [2024-06-04 15:01:52,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:01:52,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:01:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:01:53,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:01:53,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:01:53,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291732354] [2024-06-04 15:01:53,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291732354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:01:53,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:01:53,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:01:53,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720369913] [2024-06-04 15:01:53,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:01:53,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:01:53,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:01:53,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:01:53,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:01:53,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 15:01:53,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 585 transitions, 7474 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:01:53,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:01:53,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 15:01:53,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:01:57,024 INFO L124 PetriNetUnfolderBase]: 4902/8105 cut-off events. [2024-06-04 15:01:57,025 INFO L125 PetriNetUnfolderBase]: For 2701493/2701496 co-relation queries the response was YES. [2024-06-04 15:01:57,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93849 conditions, 8105 events. 4902/8105 cut-off events. For 2701493/2701496 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 55361 event pairs, 1033 based on Foata normal form. 12/8113 useless extension candidates. Maximal degree in co-relation 93623. Up to 6980 conditions per place. [2024-06-04 15:01:57,341 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 506 selfloop transitions, 121 changer transitions 0/632 dead transitions. [2024-06-04 15:01:57,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 632 transitions, 9105 flow [2024-06-04 15:01:57,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:01:57,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:01:57,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2024-06-04 15:01:57,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45041322314049587 [2024-06-04 15:01:57,342 INFO L175 Difference]: Start difference. First operand has 488 places, 585 transitions, 7474 flow. Second operand 11 states and 218 transitions. [2024-06-04 15:01:57,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 632 transitions, 9105 flow Killed by 15