./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix001.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/mix001.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/mix001.opt.i ./goblint.2024-05-21_14-57-05.files/protection/mix001.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 14:32:35,204 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 14:32:35,275 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 14:32:35,279 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 14:32:35,280 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 14:32:35,299 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 14:32:35,300 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 14:32:35,300 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 14:32:35,301 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 14:32:35,301 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 14:32:35,302 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 14:32:35,302 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 14:32:35,302 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 14:32:35,303 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 14:32:35,303 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 14:32:35,304 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 14:32:35,304 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 14:32:35,304 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 14:32:35,305 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 14:32:35,305 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 14:32:35,305 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 14:32:35,306 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 14:32:35,306 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 14:32:35,306 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 14:32:35,307 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 14:32:35,307 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 14:32:35,307 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 14:32:35,308 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 14:32:35,308 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 14:32:35,308 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 14:32:35,308 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 14:32:35,309 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 14:32:35,309 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:32:35,309 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 14:32:35,309 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 14:32:35,310 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 14:32:35,310 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 14:32:35,310 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 14:32:35,310 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 14:32:35,310 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 14:32:35,311 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 14:32:35,311 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 14:32:35,311 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 14:32:35,311 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 14:32:35,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 14:32:35,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 14:32:35,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 14:32:35,533 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 14:32:35,533 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 14:32:35,534 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix001.opt.i [2024-06-04 14:32:36,759 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 14:32:37,021 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 14:32:37,021 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix001.opt.i [2024-06-04 14:32:37,041 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8d0deea2/66f9de38f7204bc29819921bcf656240/FLAGde0af6130 [2024-06-04 14:32:37,056 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8d0deea2/66f9de38f7204bc29819921bcf656240 [2024-06-04 14:32:37,063 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 14:32:37,063 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 14:32:37,065 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix001.opt.yml/witness.yml [2024-06-04 14:32:37,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 14:32:37,275 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 14:32:37,277 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 14:32:37,277 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 14:32:37,281 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 14:32:37,282 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:32:37" (1/2) ... [2024-06-04 14:32:37,283 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19083423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:32:37, skipping insertion in model container [2024-06-04 14:32:37,283 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:32:37" (1/2) ... [2024-06-04 14:32:37,284 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6d8210e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:32:37, skipping insertion in model container [2024-06-04 14:32:37,285 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:32:37" (2/2) ... [2024-06-04 14:32:37,285 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19083423 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:37, skipping insertion in model container [2024-06-04 14:32:37,286 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:32:37" (2/2) ... [2024-06-04 14:32:37,286 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 14:32:37,393 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 14:32:37,394 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] (((((((((((((((((((((! multithreaded || y$read_delayed_var == 0) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-04 14:32:37,395 INFO L97 edCorrectnessWitness]: Location invariant before [L858-L858] (((((((((((((((((((((! multithreaded || y$read_delayed_var == 0) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-04 14:32:37,395 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] (((((((((((((((((((((! multithreaded || y$read_delayed_var == 0) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-04 14:32:37,395 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 14:32:37,395 INFO L106 edCorrectnessWitness]: ghost_update [L854-L854] multithreaded = 1; [2024-06-04 14:32:37,441 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 14:32:37,794 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:32:37,804 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 14:32:37,997 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:32:38,033 INFO L206 MainTranslator]: Completed translation [2024-06-04 14:32:38,034 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:38 WrapperNode [2024-06-04 14:32:38,034 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 14:32:38,036 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 14:32:38,036 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 14:32:38,037 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 14:32:38,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:38" (1/1) ... [2024-06-04 14:32:38,075 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:38" (1/1) ... [2024-06-04 14:32:38,108 INFO L138 Inliner]: procedures = 175, calls = 49, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 151 [2024-06-04 14:32:38,108 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 14:32:38,109 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 14:32:38,109 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 14:32:38,109 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 14:32:38,119 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:38" (1/1) ... [2024-06-04 14:32:38,124 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:38" (1/1) ... [2024-06-04 14:32:38,128 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:38" (1/1) ... [2024-06-04 14:32:38,157 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 14:32:38,157 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:38" (1/1) ... [2024-06-04 14:32:38,157 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:38" (1/1) ... [2024-06-04 14:32:38,170 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:38" (1/1) ... [2024-06-04 14:32:38,177 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:38" (1/1) ... [2024-06-04 14:32:38,180 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:38" (1/1) ... [2024-06-04 14:32:38,182 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:38" (1/1) ... [2024-06-04 14:32:38,185 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 14:32:38,186 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 14:32:38,186 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 14:32:38,186 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 14:32:38,187 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:38" (1/1) ... [2024-06-04 14:32:38,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:32:38,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 14:32:38,237 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 14:32:38,263 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 14:32:38,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 14:32:38,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 14:32:38,278 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 14:32:38,278 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 14:32:38,278 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 14:32:38,278 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 14:32:38,279 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-04 14:32:38,279 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-04 14:32:38,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 14:32:38,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 14:32:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 14:32:38,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 14:32:38,281 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 14:32:38,432 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 14:32:38,434 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 14:32:38,817 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 14:32:38,819 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 14:32:39,005 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 14:32:39,005 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 14:32:39,006 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:32:39 BoogieIcfgContainer [2024-06-04 14:32:39,006 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 14:32:39,009 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 14:32:39,009 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 14:32:39,012 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 14:32:39,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 02:32:37" (1/4) ... [2024-06-04 14:32:39,013 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@658f4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 02:32:39, skipping insertion in model container [2024-06-04 14:32:39,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:32:37" (2/4) ... [2024-06-04 14:32:39,014 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@658f4a2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 02:32:39, skipping insertion in model container [2024-06-04 14:32:39,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:38" (3/4) ... [2024-06-04 14:32:39,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@658f4a2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 02:32:39, skipping insertion in model container [2024-06-04 14:32:39,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:32:39" (4/4) ... [2024-06-04 14:32:39,016 INFO L112 eAbstractionObserver]: Analyzing ICFG mix001.opt.i [2024-06-04 14:32:39,031 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 14:32:39,031 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-04 14:32:39,032 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 14:32:39,076 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 14:32:39,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 44 transitions, 100 flow [2024-06-04 14:32:39,146 INFO L124 PetriNetUnfolderBase]: 0/41 cut-off events. [2024-06-04 14:32:39,146 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:32:39,149 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 14:32:39,149 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 44 transitions, 100 flow [2024-06-04 14:32:39,153 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 35 transitions, 79 flow [2024-06-04 14:32:39,168 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 14:32:39,175 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;@2ab0d12c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 14:32:39,175 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-04 14:32:39,181 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 14:32:39,182 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-04 14:32:39,182 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:32:39,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:39,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 14:32:39,183 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 14:32:39,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:39,188 INFO L85 PathProgramCache]: Analyzing trace with hash -408876045, now seen corresponding path program 1 times [2024-06-04 14:32:39,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:39,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509415983] [2024-06-04 14:32:39,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:39,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:39,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:40,640 INFO 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 14:32:40,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:40,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509415983] [2024-06-04 14:32:40,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509415983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:40,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:40,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 14:32:40,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689512343] [2024-06-04 14:32:40,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:40,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 14:32:40,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:40,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 14:32:40,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 14:32:40,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2024-06-04 14:32:40,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:40,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:40,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2024-06-04 14:32:40,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:41,150 INFO L124 PetriNetUnfolderBase]: 869/1414 cut-off events. [2024-06-04 14:32:41,151 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-06-04 14:32:41,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2794 conditions, 1414 events. 869/1414 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7483 event pairs, 566 based on Foata normal form. 1/1356 useless extension candidates. Maximal degree in co-relation 2779. Up to 1315 conditions per place. [2024-06-04 14:32:41,163 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 32 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-04 14:32:41,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 177 flow [2024-06-04 14:32:41,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 14:32:41,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 14:32:41,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-06-04 14:32:41,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-06-04 14:32:41,176 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 79 flow. Second operand 3 states and 84 transitions. [2024-06-04 14:32:41,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 177 flow [2024-06-04 14:32:41,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 172 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-04 14:32:41,181 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 106 flow [2024-06-04 14:32:41,183 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 14:32:41,186 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2024-06-04 14:32:41,186 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 106 flow [2024-06-04 14:32:41,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:41,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:41,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:41,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 14:32:41,187 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 14:32:41,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:41,188 INFO L85 PathProgramCache]: Analyzing trace with hash -2087833902, now seen corresponding path program 1 times [2024-06-04 14:32:41,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:41,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543608275] [2024-06-04 14:32:41,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:41,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:41,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:42,293 INFO 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 14:32:42,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:42,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543608275] [2024-06-04 14:32:42,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543608275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:42,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:42,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 14:32:42,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059431222] [2024-06-04 14:32:42,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:42,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 14:32:42,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:42,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 14:32:42,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-04 14:32:42,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-04 14:32:42,367 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 14:32:42,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:42,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-04 14:32:42,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:42,723 INFO L124 PetriNetUnfolderBase]: 1280/1981 cut-off events. [2024-06-04 14:32:42,723 INFO L125 PetriNetUnfolderBase]: For 406/406 co-relation queries the response was YES. [2024-06-04 14:32:42,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4504 conditions, 1981 events. 1280/1981 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10135 event pairs, 750 based on Foata normal form. 3/1964 useless extension candidates. Maximal degree in co-relation 4489. Up to 1897 conditions per place. [2024-06-04 14:32:42,737 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 41 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2024-06-04 14:32:42,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 55 transitions, 248 flow [2024-06-04 14:32:42,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 14:32:42,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 14:32:42,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-06-04 14:32:42,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5852272727272727 [2024-06-04 14:32:42,742 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 106 flow. Second operand 4 states and 103 transitions. [2024-06-04 14:32:42,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 55 transitions, 248 flow [2024-06-04 14:32:42,743 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 14:32:42,745 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 142 flow [2024-06-04 14:32:42,745 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 14:32:42,746 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2024-06-04 14:32:42,746 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 142 flow [2024-06-04 14:32:42,747 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 14:32:42,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:42,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:42,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 14:32:42,750 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 14:32:42,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:42,751 INFO L85 PathProgramCache]: Analyzing trace with hash -298340792, now seen corresponding path program 1 times [2024-06-04 14:32:42,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:42,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205783303] [2024-06-04 14:32:42,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:42,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:44,019 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 14:32:44,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:44,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205783303] [2024-06-04 14:32:44,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205783303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:44,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:44,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 14:32:44,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115261328] [2024-06-04 14:32:44,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:44,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 14:32:44,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:44,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 14:32:44,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-04 14:32:44,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-04 14:32:44,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 142 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:44,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:44,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-04 14:32:44,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:44,510 INFO L124 PetriNetUnfolderBase]: 1274/1994 cut-off events. [2024-06-04 14:32:44,511 INFO L125 PetriNetUnfolderBase]: For 1138/1138 co-relation queries the response was YES. [2024-06-04 14:32:44,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5025 conditions, 1994 events. 1274/1994 cut-off events. For 1138/1138 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 10297 event pairs, 608 based on Foata normal form. 3/1991 useless extension candidates. Maximal degree in co-relation 5008. Up to 1873 conditions per place. [2024-06-04 14:32:44,523 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 48 selfloop transitions, 10 changer transitions 0/65 dead transitions. [2024-06-04 14:32:44,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 65 transitions, 326 flow [2024-06-04 14:32:44,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:32:44,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:32:44,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-06-04 14:32:44,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5727272727272728 [2024-06-04 14:32:44,529 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 142 flow. Second operand 5 states and 126 transitions. [2024-06-04 14:32:44,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 65 transitions, 326 flow [2024-06-04 14:32:44,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 65 transitions, 312 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-04 14:32:44,533 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 178 flow [2024-06-04 14:32:44,534 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 14:32:44,535 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 6 predicate places. [2024-06-04 14:32:44,535 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 178 flow [2024-06-04 14:32:44,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:44,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:44,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:44,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 14:32:44,537 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:32:44,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:44,537 INFO L85 PathProgramCache]: Analyzing trace with hash 848620301, now seen corresponding path program 1 times [2024-06-04 14:32:44,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:44,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674245181] [2024-06-04 14:32:44,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:44,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:45,385 INFO 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 14:32:45,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:45,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674245181] [2024-06-04 14:32:45,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674245181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:45,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:45,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:32:45,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385579681] [2024-06-04 14:32:45,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:45,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:32:45,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:45,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:32:45,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:32:45,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:32:45,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 178 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) 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 14:32:45,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:45,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:32:45,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:46,104 INFO L124 PetriNetUnfolderBase]: 1542/2450 cut-off events. [2024-06-04 14:32:46,105 INFO L125 PetriNetUnfolderBase]: For 2318/2318 co-relation queries the response was YES. [2024-06-04 14:32:46,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6596 conditions, 2450 events. 1542/2450 cut-off events. For 2318/2318 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12794 event pairs, 853 based on Foata normal form. 2/2415 useless extension candidates. Maximal degree in co-relation 6578. Up to 2282 conditions per place. [2024-06-04 14:32:46,120 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 42 selfloop transitions, 8 changer transitions 0/58 dead transitions. [2024-06-04 14:32:46,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 58 transitions, 320 flow [2024-06-04 14:32:46,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:32:46,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:32:46,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2024-06-04 14:32:46,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4863636363636364 [2024-06-04 14:32:46,122 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 178 flow. Second operand 5 states and 107 transitions. [2024-06-04 14:32:46,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 58 transitions, 320 flow [2024-06-04 14:32:46,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 296 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-04 14:32:46,125 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 198 flow [2024-06-04 14:32:46,125 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=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=198, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-06-04 14:32:46,126 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 8 predicate places. [2024-06-04 14:32:46,126 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 198 flow [2024-06-04 14:32:46,126 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 14:32:46,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:46,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:46,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 14:32:46,127 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:32:46,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:46,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1582442352, now seen corresponding path program 1 times [2024-06-04 14:32:46,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:46,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673813920] [2024-06-04 14:32:46,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:46,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:47,775 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 14:32:47,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:47,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673813920] [2024-06-04 14:32:47,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673813920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:47,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:47,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:32:47,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575123220] [2024-06-04 14:32:47,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:47,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:32:47,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:47,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:32:47,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:32:47,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:32:47,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 198 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:47,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:47,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:32:47,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:48,483 INFO L124 PetriNetUnfolderBase]: 1763/2719 cut-off events. [2024-06-04 14:32:48,483 INFO L125 PetriNetUnfolderBase]: For 4389/4389 co-relation queries the response was YES. [2024-06-04 14:32:48,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7980 conditions, 2719 events. 1763/2719 cut-off events. For 4389/4389 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 13835 event pairs, 617 based on Foata normal form. 6/2708 useless extension candidates. Maximal degree in co-relation 7960. Up to 2517 conditions per place. [2024-06-04 14:32:48,504 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 62 selfloop transitions, 15 changer transitions 0/84 dead transitions. [2024-06-04 14:32:48,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 84 transitions, 456 flow [2024-06-04 14:32:48,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:32:48,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:32:48,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-04 14:32:48,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525974025974026 [2024-06-04 14:32:48,506 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 198 flow. Second operand 7 states and 162 transitions. [2024-06-04 14:32:48,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 84 transitions, 456 flow [2024-06-04 14:32:48,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 84 transitions, 436 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-04 14:32:48,516 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 245 flow [2024-06-04 14:32:48,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=245, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-06-04 14:32:48,518 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2024-06-04 14:32:48,518 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 245 flow [2024-06-04 14:32:48,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:48,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:48,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:48,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 14:32:48,520 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 14:32:48,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:48,521 INFO L85 PathProgramCache]: Analyzing trace with hash 537427222, now seen corresponding path program 1 times [2024-06-04 14:32:48,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:48,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470714431] [2024-06-04 14:32:48,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:48,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:48,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:49,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:49,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:49,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470714431] [2024-06-04 14:32:49,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470714431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:49,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:49,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:32:49,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006826917] [2024-06-04 14:32:49,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:49,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:32:49,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:49,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:32:49,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:32:49,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:32:49,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 245 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:49,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:49,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:32:49,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:50,243 INFO L124 PetriNetUnfolderBase]: 1516/2446 cut-off events. [2024-06-04 14:32:50,243 INFO L125 PetriNetUnfolderBase]: For 5299/5299 co-relation queries the response was YES. [2024-06-04 14:32:50,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7634 conditions, 2446 events. 1516/2446 cut-off events. For 5299/5299 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 12919 event pairs, 653 based on Foata normal form. 4/2430 useless extension candidates. Maximal degree in co-relation 7613. Up to 2235 conditions per place. [2024-06-04 14:32:50,284 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 51 selfloop transitions, 11 changer transitions 0/70 dead transitions. [2024-06-04 14:32:50,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 70 transitions, 429 flow [2024-06-04 14:32:50,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:32:50,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:32:50,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-06-04 14:32:50,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-06-04 14:32:50,286 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 245 flow. Second operand 6 states and 126 transitions. [2024-06-04 14:32:50,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 70 transitions, 429 flow [2024-06-04 14:32:50,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 70 transitions, 390 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-04 14:32:50,290 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 262 flow [2024-06-04 14:32:50,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-06-04 14:32:50,291 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 14 predicate places. [2024-06-04 14:32:50,291 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 262 flow [2024-06-04 14:32:50,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:50,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:50,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:50,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 14:32:50,292 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 14:32:50,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:50,292 INFO L85 PathProgramCache]: Analyzing trace with hash 503451168, now seen corresponding path program 1 times [2024-06-04 14:32:50,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:50,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699914490] [2024-06-04 14:32:50,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:50,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:51,229 INFO 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 14:32:51,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:51,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699914490] [2024-06-04 14:32:51,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699914490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:51,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:51,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:32:51,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031389187] [2024-06-04 14:32:51,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:51,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:32:51,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:51,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:32:51,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:32:51,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:32:51,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 262 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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 14:32:51,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:51,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:32:51,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:52,210 INFO L124 PetriNetUnfolderBase]: 1880/2834 cut-off events. [2024-06-04 14:32:52,211 INFO L125 PetriNetUnfolderBase]: For 8474/8480 co-relation queries the response was YES. [2024-06-04 14:32:52,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9599 conditions, 2834 events. 1880/2834 cut-off events. For 8474/8480 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 13913 event pairs, 777 based on Foata normal form. 6/2836 useless extension candidates. Maximal degree in co-relation 9576. Up to 2734 conditions per place. [2024-06-04 14:32:52,245 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 59 selfloop transitions, 16 changer transitions 0/80 dead transitions. [2024-06-04 14:32:52,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 80 transitions, 530 flow [2024-06-04 14:32:52,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:32:52,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:32:52,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-04 14:32:52,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-06-04 14:32:52,246 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 262 flow. Second operand 6 states and 122 transitions. [2024-06-04 14:32:52,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 80 transitions, 530 flow [2024-06-04 14:32:52,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 80 transitions, 498 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-04 14:32:52,251 INFO L231 Difference]: Finished difference. Result has 61 places, 60 transitions, 320 flow [2024-06-04 14:32:52,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=320, PETRI_PLACES=61, PETRI_TRANSITIONS=60} [2024-06-04 14:32:52,252 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 16 predicate places. [2024-06-04 14:32:52,252 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 60 transitions, 320 flow [2024-06-04 14:32:52,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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 14:32:52,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:52,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:52,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 14:32:52,253 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:32:52,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:52,254 INFO L85 PathProgramCache]: Analyzing trace with hash 511674228, now seen corresponding path program 2 times [2024-06-04 14:32:52,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:52,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573929467] [2024-06-04 14:32:52,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:52,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:53,190 INFO 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 14:32:53,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:53,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573929467] [2024-06-04 14:32:53,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573929467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:53,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:53,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:32:53,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696882197] [2024-06-04 14:32:53,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:53,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:32:53,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:53,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:32:53,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:32:53,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:32:53,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 60 transitions, 320 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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 14:32:53,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:53,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:32:53,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:53,927 INFO L124 PetriNetUnfolderBase]: 1875/2828 cut-off events. [2024-06-04 14:32:53,927 INFO L125 PetriNetUnfolderBase]: For 10983/10998 co-relation queries the response was YES. [2024-06-04 14:32:53,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10175 conditions, 2828 events. 1875/2828 cut-off events. For 10983/10998 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 13864 event pairs, 780 based on Foata normal form. 12/2835 useless extension candidates. Maximal degree in co-relation 10151. Up to 2729 conditions per place. [2024-06-04 14:32:53,946 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 54 selfloop transitions, 16 changer transitions 0/75 dead transitions. [2024-06-04 14:32:53,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 75 transitions, 498 flow [2024-06-04 14:32:53,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:32:53,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:32:53,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2024-06-04 14:32:53,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-04 14:32:53,948 INFO L175 Difference]: Start difference. First operand has 61 places, 60 transitions, 320 flow. Second operand 6 states and 117 transitions. [2024-06-04 14:32:53,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 75 transitions, 498 flow [2024-06-04 14:32:53,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 75 transitions, 462 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-04 14:32:53,956 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 324 flow [2024-06-04 14:32:53,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=324, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2024-06-04 14:32:53,958 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 20 predicate places. [2024-06-04 14:32:53,958 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 324 flow [2024-06-04 14:32:53,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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 14:32:53,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:53,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:53,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 14:32:53,959 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 14:32:53,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:53,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1897588004, now seen corresponding path program 1 times [2024-06-04 14:32:53,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:53,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910944477] [2024-06-04 14:32:53,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:53,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:53,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:54,926 INFO 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 14:32:54,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:54,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910944477] [2024-06-04 14:32:54,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910944477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:54,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:54,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:32:54,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580122864] [2024-06-04 14:32:54,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:54,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:32:54,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:54,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:32:54,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:32:54,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:32:54,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 324 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 14:32:54,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:54,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:32:54,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:55,723 INFO L124 PetriNetUnfolderBase]: 1972/2981 cut-off events. [2024-06-04 14:32:55,723 INFO L125 PetriNetUnfolderBase]: For 13400/13410 co-relation queries the response was YES. [2024-06-04 14:32:55,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11102 conditions, 2981 events. 1972/2981 cut-off events. For 13400/13410 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14652 event pairs, 755 based on Foata normal form. 10/2987 useless extension candidates. Maximal degree in co-relation 11076. Up to 2769 conditions per place. [2024-06-04 14:32:55,740 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 75 selfloop transitions, 41 changer transitions 0/121 dead transitions. [2024-06-04 14:32:55,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 121 transitions, 946 flow [2024-06-04 14:32:55,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:32:55,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:32:55,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-04 14:32:55,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715909090909091 [2024-06-04 14:32:55,745 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 324 flow. Second operand 8 states and 166 transitions. [2024-06-04 14:32:55,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 121 transitions, 946 flow [2024-06-04 14:32:55,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 121 transitions, 881 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-04 14:32:55,754 INFO L231 Difference]: Finished difference. Result has 71 places, 87 transitions, 606 flow [2024-06-04 14:32:55,754 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=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=606, PETRI_PLACES=71, PETRI_TRANSITIONS=87} [2024-06-04 14:32:55,755 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 26 predicate places. [2024-06-04 14:32:55,755 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 87 transitions, 606 flow [2024-06-04 14:32:55,755 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 14:32:55,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:55,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:55,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 14:32:55,756 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 14:32:55,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:55,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1063904912, now seen corresponding path program 2 times [2024-06-04 14:32:55,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:55,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980098443] [2024-06-04 14:32:55,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:55,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:56,745 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 14:32:56,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:56,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980098443] [2024-06-04 14:32:56,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980098443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:56,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:56,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:32:56,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072296924] [2024-06-04 14:32:56,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:56,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:32:56,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:56,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:32:56,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:32:56,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:32:56,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 87 transitions, 606 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 14:32:56,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:56,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:32:56,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:57,615 INFO L124 PetriNetUnfolderBase]: 1988/3003 cut-off events. [2024-06-04 14:32:57,615 INFO L125 PetriNetUnfolderBase]: For 16997/17011 co-relation queries the response was YES. [2024-06-04 14:32:57,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12117 conditions, 3003 events. 1988/3003 cut-off events. For 16997/17011 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14721 event pairs, 760 based on Foata normal form. 16/3015 useless extension candidates. Maximal degree in co-relation 12087. Up to 2787 conditions per place. [2024-06-04 14:32:57,636 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 67 selfloop transitions, 49 changer transitions 0/121 dead transitions. [2024-06-04 14:32:57,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 121 transitions, 1036 flow [2024-06-04 14:32:57,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:32:57,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:32:57,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-04 14:32:57,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-04 14:32:57,638 INFO L175 Difference]: Start difference. First operand has 71 places, 87 transitions, 606 flow. Second operand 7 states and 143 transitions. [2024-06-04 14:32:57,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 121 transitions, 1036 flow [2024-06-04 14:32:57,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 121 transitions, 1002 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-04 14:32:57,654 INFO L231 Difference]: Finished difference. Result has 76 places, 93 transitions, 755 flow [2024-06-04 14:32:57,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=755, PETRI_PLACES=76, PETRI_TRANSITIONS=93} [2024-06-04 14:32:57,656 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 31 predicate places. [2024-06-04 14:32:57,658 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 93 transitions, 755 flow [2024-06-04 14:32:57,658 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 14:32:57,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:57,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:57,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 14:32:57,659 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 14:32:57,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:57,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1572881309, now seen corresponding path program 1 times [2024-06-04 14:32:57,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:57,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903591212] [2024-06-04 14:32:57,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:57,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:58,610 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 14:32:58,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:58,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903591212] [2024-06-04 14:32:58,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903591212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:58,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:58,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:32:58,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110734898] [2024-06-04 14:32:58,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:58,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:32:58,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:58,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:32:58,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:32:58,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:32:58,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 93 transitions, 755 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 14:32:58,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:58,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:32:58,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:59,467 INFO L124 PetriNetUnfolderBase]: 2010/3040 cut-off events. [2024-06-04 14:32:59,467 INFO L125 PetriNetUnfolderBase]: For 19727/19741 co-relation queries the response was YES. [2024-06-04 14:32:59,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12589 conditions, 3040 events. 2010/3040 cut-off events. For 19727/19741 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14965 event pairs, 710 based on Foata normal form. 13/3049 useless extension candidates. Maximal degree in co-relation 12557. Up to 2832 conditions per place. [2024-06-04 14:32:59,488 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 93 selfloop transitions, 30 changer transitions 0/128 dead transitions. [2024-06-04 14:32:59,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 128 transitions, 1189 flow [2024-06-04 14:32:59,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:32:59,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:32:59,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-04 14:32:59,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4675324675324675 [2024-06-04 14:32:59,490 INFO L175 Difference]: Start difference. First operand has 76 places, 93 transitions, 755 flow. Second operand 7 states and 144 transitions. [2024-06-04 14:32:59,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 128 transitions, 1189 flow [2024-06-04 14:32:59,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 128 transitions, 1065 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-04 14:32:59,509 INFO L231 Difference]: Finished difference. Result has 78 places, 99 transitions, 766 flow [2024-06-04 14:32:59,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=766, PETRI_PLACES=78, PETRI_TRANSITIONS=99} [2024-06-04 14:32:59,510 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 33 predicate places. [2024-06-04 14:32:59,510 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 99 transitions, 766 flow [2024-06-04 14:32:59,510 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 14:32:59,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:59,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:59,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 14:32:59,511 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 14:32:59,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:59,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1918622500, now seen corresponding path program 3 times [2024-06-04 14:32:59,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:59,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450488264] [2024-06-04 14:32:59,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:59,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:00,436 INFO 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 14:33:00,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:00,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450488264] [2024-06-04 14:33:00,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450488264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:00,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:00,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:33:00,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499654756] [2024-06-04 14:33:00,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:00,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:33:00,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:00,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:33:00,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:33:00,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:33:00,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 99 transitions, 766 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 14:33:00,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:00,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:33:00,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:01,281 INFO L124 PetriNetUnfolderBase]: 2033/3074 cut-off events. [2024-06-04 14:33:01,281 INFO L125 PetriNetUnfolderBase]: For 20753/20756 co-relation queries the response was YES. [2024-06-04 14:33:01,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13008 conditions, 3074 events. 2033/3074 cut-off events. For 20753/20756 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 15128 event pairs, 745 based on Foata normal form. 7/3077 useless extension candidates. Maximal degree in co-relation 12976. Up to 2845 conditions per place. [2024-06-04 14:33:01,302 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 73 selfloop transitions, 55 changer transitions 0/133 dead transitions. [2024-06-04 14:33:01,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 133 transitions, 1244 flow [2024-06-04 14:33:01,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:33:01,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:33:01,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-04 14:33:01,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577922077922078 [2024-06-04 14:33:01,304 INFO L175 Difference]: Start difference. First operand has 78 places, 99 transitions, 766 flow. Second operand 7 states and 141 transitions. [2024-06-04 14:33:01,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 133 transitions, 1244 flow [2024-06-04 14:33:01,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 133 transitions, 1205 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-04 14:33:01,327 INFO L231 Difference]: Finished difference. Result has 82 places, 108 transitions, 954 flow [2024-06-04 14:33:01,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=954, PETRI_PLACES=82, PETRI_TRANSITIONS=108} [2024-06-04 14:33:01,328 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 37 predicate places. [2024-06-04 14:33:01,328 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 108 transitions, 954 flow [2024-06-04 14:33:01,329 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 14:33:01,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:01,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:01,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 14:33:01,329 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:33:01,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:01,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1343617709, now seen corresponding path program 2 times [2024-06-04 14:33:01,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:01,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166759525] [2024-06-04 14:33:01,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:01,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:02,288 INFO 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 14:33:02,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:02,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166759525] [2024-06-04 14:33:02,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166759525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:02,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:02,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:33:02,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095375263] [2024-06-04 14:33:02,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:02,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:33:02,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:02,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:33:02,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:33:02,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:33:02,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 108 transitions, 954 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 14:33:02,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:02,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:33:02,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:03,221 INFO L124 PetriNetUnfolderBase]: 2055/3107 cut-off events. [2024-06-04 14:33:03,222 INFO L125 PetriNetUnfolderBase]: For 24239/24263 co-relation queries the response was YES. [2024-06-04 14:33:03,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13612 conditions, 3107 events. 2055/3107 cut-off events. For 24239/24263 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 15251 event pairs, 703 based on Foata normal form. 20/3120 useless extension candidates. Maximal degree in co-relation 13578. Up to 2884 conditions per place. [2024-06-04 14:33:03,240 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 97 selfloop transitions, 35 changer transitions 0/137 dead transitions. [2024-06-04 14:33:03,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 137 transitions, 1380 flow [2024-06-04 14:33:03,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:33:03,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:33:03,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-04 14:33:03,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512987012987013 [2024-06-04 14:33:03,242 INFO L175 Difference]: Start difference. First operand has 82 places, 108 transitions, 954 flow. Second operand 7 states and 139 transitions. [2024-06-04 14:33:03,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 137 transitions, 1380 flow [2024-06-04 14:33:03,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 137 transitions, 1259 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-04 14:33:03,272 INFO L231 Difference]: Finished difference. Result has 85 places, 111 transitions, 945 flow [2024-06-04 14:33:03,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=945, PETRI_PLACES=85, PETRI_TRANSITIONS=111} [2024-06-04 14:33:03,272 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 40 predicate places. [2024-06-04 14:33:03,273 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 111 transitions, 945 flow [2024-06-04 14:33:03,273 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 14:33:03,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:03,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:03,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 14:33:03,274 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 14:33:03,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:03,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1020047880, now seen corresponding path program 4 times [2024-06-04 14:33:03,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:03,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901098977] [2024-06-04 14:33:03,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:03,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:04,177 INFO 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 14:33:04,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:04,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901098977] [2024-06-04 14:33:04,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901098977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:04,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:04,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:33:04,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884763881] [2024-06-04 14:33:04,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:04,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:33:04,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:04,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:33:04,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:33:04,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:33:04,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 111 transitions, 945 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 14:33:04,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:04,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:33:04,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:04,958 INFO L124 PetriNetUnfolderBase]: 2044/3098 cut-off events. [2024-06-04 14:33:04,958 INFO L125 PetriNetUnfolderBase]: For 27186/27195 co-relation queries the response was YES. [2024-06-04 14:33:04,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13693 conditions, 3098 events. 2044/3098 cut-off events. For 27186/27195 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 15282 event pairs, 749 based on Foata normal form. 7/3094 useless extension candidates. Maximal degree in co-relation 13658. Up to 2866 conditions per place. [2024-06-04 14:33:04,980 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 71 selfloop transitions, 55 changer transitions 0/131 dead transitions. [2024-06-04 14:33:04,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 131 transitions, 1265 flow [2024-06-04 14:33:04,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:33:04,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:33:04,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-04 14:33:04,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-06-04 14:33:04,982 INFO L175 Difference]: Start difference. First operand has 85 places, 111 transitions, 945 flow. Second operand 7 states and 136 transitions. [2024-06-04 14:33:04,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 131 transitions, 1265 flow [2024-06-04 14:33:05,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 131 transitions, 1149 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-04 14:33:05,014 INFO L231 Difference]: Finished difference. Result has 88 places, 111 transitions, 954 flow [2024-06-04 14:33:05,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=954, PETRI_PLACES=88, PETRI_TRANSITIONS=111} [2024-06-04 14:33:05,015 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 43 predicate places. [2024-06-04 14:33:05,015 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 111 transitions, 954 flow [2024-06-04 14:33:05,016 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 14:33:05,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:05,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:05,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 14:33:05,016 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 14:33:05,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:05,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1925974367, now seen corresponding path program 3 times [2024-06-04 14:33:05,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:05,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932751803] [2024-06-04 14:33:05,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:05,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:05,927 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 14:33:05,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:05,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932751803] [2024-06-04 14:33:05,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932751803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:05,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:05,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:33:05,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078347929] [2024-06-04 14:33:05,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:05,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:33:05,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:05,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:33:05,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:33:05,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:33:05,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 111 transitions, 954 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 14:33:05,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:05,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:33:05,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:06,701 INFO L124 PetriNetUnfolderBase]: 2034/3079 cut-off events. [2024-06-04 14:33:06,701 INFO L125 PetriNetUnfolderBase]: For 29849/29864 co-relation queries the response was YES. [2024-06-04 14:33:06,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13820 conditions, 3079 events. 2034/3079 cut-off events. For 29849/29864 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 15122 event pairs, 701 based on Foata normal form. 14/3086 useless extension candidates. Maximal degree in co-relation 13784. Up to 2861 conditions per place. [2024-06-04 14:33:06,721 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 99 selfloop transitions, 33 changer transitions 0/137 dead transitions. [2024-06-04 14:33:06,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 137 transitions, 1306 flow [2024-06-04 14:33:06,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:33:06,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:33:06,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-04 14:33:06,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512987012987013 [2024-06-04 14:33:06,723 INFO L175 Difference]: Start difference. First operand has 88 places, 111 transitions, 954 flow. Second operand 7 states and 139 transitions. [2024-06-04 14:33:06,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 137 transitions, 1306 flow [2024-06-04 14:33:06,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 137 transitions, 1111 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-04 14:33:06,754 INFO L231 Difference]: Finished difference. Result has 87 places, 111 transitions, 834 flow [2024-06-04 14:33:06,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=834, PETRI_PLACES=87, PETRI_TRANSITIONS=111} [2024-06-04 14:33:06,755 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 42 predicate places. [2024-06-04 14:33:06,755 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 111 transitions, 834 flow [2024-06-04 14:33:06,755 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 14:33:06,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:06,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:06,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 14:33:06,755 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:33:06,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:06,756 INFO L85 PathProgramCache]: Analyzing trace with hash -33405023, now seen corresponding path program 1 times [2024-06-04 14:33:06,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:06,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131633246] [2024-06-04 14:33:06,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:06,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:07,845 INFO 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 14:33:07,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:07,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131633246] [2024-06-04 14:33:07,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131633246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:07,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:07,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:33:07,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962027107] [2024-06-04 14:33:07,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:07,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:33:07,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:07,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:33:07,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:33:07,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-06-04 14:33:07,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 111 transitions, 834 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:07,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:07,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-06-04 14:33:07,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:08,305 INFO L124 PetriNetUnfolderBase]: 1432/2445 cut-off events. [2024-06-04 14:33:08,305 INFO L125 PetriNetUnfolderBase]: For 26424/26442 co-relation queries the response was YES. [2024-06-04 14:33:08,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10730 conditions, 2445 events. 1432/2445 cut-off events. For 26424/26442 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 13770 event pairs, 585 based on Foata normal form. 19/2461 useless extension candidates. Maximal degree in co-relation 10694. Up to 2059 conditions per place. [2024-06-04 14:33:08,320 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 70 selfloop transitions, 8 changer transitions 0/122 dead transitions. [2024-06-04 14:33:08,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 122 transitions, 1034 flow [2024-06-04 14:33:08,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:33:08,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:33:08,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2024-06-04 14:33:08,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-04 14:33:08,322 INFO L175 Difference]: Start difference. First operand has 87 places, 111 transitions, 834 flow. Second operand 5 states and 110 transitions. [2024-06-04 14:33:08,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 122 transitions, 1034 flow [2024-06-04 14:33:08,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 122 transitions, 941 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-04 14:33:08,342 INFO L231 Difference]: Finished difference. Result has 85 places, 114 transitions, 789 flow [2024-06-04 14:33:08,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=789, PETRI_PLACES=85, PETRI_TRANSITIONS=114} [2024-06-04 14:33:08,342 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 40 predicate places. [2024-06-04 14:33:08,342 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 114 transitions, 789 flow [2024-06-04 14:33:08,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:08,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:08,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:08,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 14:33:08,343 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 14:33:08,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:08,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1028305867, now seen corresponding path program 1 times [2024-06-04 14:33:08,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:08,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24280658] [2024-06-04 14:33:08,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:08,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:09,508 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 14:33:09,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:09,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24280658] [2024-06-04 14:33:09,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24280658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:09,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:09,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:33:09,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524406773] [2024-06-04 14:33:09,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:09,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:33:09,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:09,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:33:09,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:33:09,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:33:09,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 114 transitions, 789 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 14:33:09,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:09,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:33:09,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:10,356 INFO L124 PetriNetUnfolderBase]: 2042/3090 cut-off events. [2024-06-04 14:33:10,357 INFO L125 PetriNetUnfolderBase]: For 34752/34756 co-relation queries the response was YES. [2024-06-04 14:33:10,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14363 conditions, 3090 events. 2042/3090 cut-off events. For 34752/34756 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 15211 event pairs, 707 based on Foata normal form. 6/3093 useless extension candidates. Maximal degree in co-relation 14326. Up to 2929 conditions per place. [2024-06-04 14:33:10,373 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 121 selfloop transitions, 24 changer transitions 0/150 dead transitions. [2024-06-04 14:33:10,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 150 transitions, 1221 flow [2024-06-04 14:33:10,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:33:10,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:33:10,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-04 14:33:10,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-06-04 14:33:10,375 INFO L175 Difference]: Start difference. First operand has 85 places, 114 transitions, 789 flow. Second operand 8 states and 158 transitions. [2024-06-04 14:33:10,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 150 transitions, 1221 flow [2024-06-04 14:33:10,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 150 transitions, 1195 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-04 14:33:10,400 INFO L231 Difference]: Finished difference. Result has 90 places, 117 transitions, 857 flow [2024-06-04 14:33:10,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=857, PETRI_PLACES=90, PETRI_TRANSITIONS=117} [2024-06-04 14:33:10,401 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 45 predicate places. [2024-06-04 14:33:10,401 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 117 transitions, 857 flow [2024-06-04 14:33:10,401 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 14:33:10,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:10,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:10,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 14:33:10,402 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:33:10,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:10,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1379583355, now seen corresponding path program 1 times [2024-06-04 14:33:10,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:10,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361922873] [2024-06-04 14:33:10,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:10,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:11,489 INFO 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 14:33:11,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:11,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361922873] [2024-06-04 14:33:11,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361922873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:11,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:11,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:33:11,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661242286] [2024-06-04 14:33:11,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:11,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:33:11,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:11,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:33:11,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:33:11,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:33:11,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 117 transitions, 857 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 14:33:11,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:11,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:33:11,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:12,497 INFO L124 PetriNetUnfolderBase]: 2064/3126 cut-off events. [2024-06-04 14:33:12,497 INFO L125 PetriNetUnfolderBase]: For 39998/40005 co-relation queries the response was YES. [2024-06-04 14:33:12,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15190 conditions, 3126 events. 2064/3126 cut-off events. For 39998/40005 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 15382 event pairs, 640 based on Foata normal form. 8/3130 useless extension candidates. Maximal degree in co-relation 15152. Up to 2710 conditions per place. [2024-06-04 14:33:12,511 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 89 selfloop transitions, 65 changer transitions 0/159 dead transitions. [2024-06-04 14:33:12,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 159 transitions, 1403 flow [2024-06-04 14:33:12,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:33:12,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:33:12,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2024-06-04 14:33:12,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744318181818182 [2024-06-04 14:33:12,513 INFO L175 Difference]: Start difference. First operand has 90 places, 117 transitions, 857 flow. Second operand 8 states and 167 transitions. [2024-06-04 14:33:12,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 159 transitions, 1403 flow [2024-06-04 14:33:12,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 159 transitions, 1333 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-04 14:33:12,536 INFO L231 Difference]: Finished difference. Result has 92 places, 123 transitions, 997 flow [2024-06-04 14:33:12,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=997, PETRI_PLACES=92, PETRI_TRANSITIONS=123} [2024-06-04 14:33:12,537 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 47 predicate places. [2024-06-04 14:33:12,537 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 123 transitions, 997 flow [2024-06-04 14:33:12,537 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 14:33:12,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:12,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:12,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 14:33:12,537 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 14:33:12,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:12,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1514858549, now seen corresponding path program 2 times [2024-06-04 14:33:12,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:12,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955067920] [2024-06-04 14:33:12,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:12,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:13,544 INFO 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 14:33:13,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:13,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955067920] [2024-06-04 14:33:13,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955067920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:13,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:13,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:33:13,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722134146] [2024-06-04 14:33:13,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:13,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:33:13,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:13,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:33:13,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:33:13,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:33:13,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 123 transitions, 997 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 14:33:13,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:13,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:33:13,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:14,407 INFO L124 PetriNetUnfolderBase]: 2075/3146 cut-off events. [2024-06-04 14:33:14,407 INFO L125 PetriNetUnfolderBase]: For 45327/45334 co-relation queries the response was YES. [2024-06-04 14:33:14,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16028 conditions, 3146 events. 2075/3146 cut-off events. For 45327/45334 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 15568 event pairs, 691 based on Foata normal form. 8/3150 useless extension candidates. Maximal degree in co-relation 15989. Up to 2827 conditions per place. [2024-06-04 14:33:14,421 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 96 selfloop transitions, 61 changer transitions 0/162 dead transitions. [2024-06-04 14:33:14,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 162 transitions, 1565 flow [2024-06-04 14:33:14,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:33:14,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:33:14,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-04 14:33:14,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2024-06-04 14:33:14,423 INFO L175 Difference]: Start difference. First operand has 92 places, 123 transitions, 997 flow. Second operand 8 states and 162 transitions. [2024-06-04 14:33:14,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 162 transitions, 1565 flow [2024-06-04 14:33:14,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 162 transitions, 1488 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-04 14:33:14,451 INFO L231 Difference]: Finished difference. Result has 96 places, 129 transitions, 1138 flow [2024-06-04 14:33:14,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1138, PETRI_PLACES=96, PETRI_TRANSITIONS=129} [2024-06-04 14:33:14,452 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 51 predicate places. [2024-06-04 14:33:14,452 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 129 transitions, 1138 flow [2024-06-04 14:33:14,452 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 14:33:14,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:14,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:14,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 14:33:14,452 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 14:33:14,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:14,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1384224985, now seen corresponding path program 2 times [2024-06-04 14:33:14,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:14,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602547980] [2024-06-04 14:33:14,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:14,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:15,564 INFO 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 14:33:15,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:15,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602547980] [2024-06-04 14:33:15,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602547980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:15,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:15,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:33:15,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932611163] [2024-06-04 14:33:15,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:15,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:33:15,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:15,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:33:15,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:33:15,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:33:15,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 129 transitions, 1138 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 14:33:15,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:15,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:33:15,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:16,512 INFO L124 PetriNetUnfolderBase]: 2129/3229 cut-off events. [2024-06-04 14:33:16,512 INFO L125 PetriNetUnfolderBase]: For 52452/52455 co-relation queries the response was YES. [2024-06-04 14:33:16,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17142 conditions, 3229 events. 2129/3229 cut-off events. For 52452/52455 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 16011 event pairs, 642 based on Foata normal form. 4/3229 useless extension candidates. Maximal degree in co-relation 17101. Up to 2772 conditions per place. [2024-06-04 14:33:16,529 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 100 selfloop transitions, 66 changer transitions 0/171 dead transitions. [2024-06-04 14:33:16,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 171 transitions, 1780 flow [2024-06-04 14:33:16,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:33:16,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:33:16,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-04 14:33:16,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48011363636363635 [2024-06-04 14:33:16,531 INFO L175 Difference]: Start difference. First operand has 96 places, 129 transitions, 1138 flow. Second operand 8 states and 169 transitions. [2024-06-04 14:33:16,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 171 transitions, 1780 flow [2024-06-04 14:33:16,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 171 transitions, 1699 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-04 14:33:16,575 INFO L231 Difference]: Finished difference. Result has 100 places, 135 transitions, 1263 flow [2024-06-04 14:33:16,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1057, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1263, PETRI_PLACES=100, PETRI_TRANSITIONS=135} [2024-06-04 14:33:16,576 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 55 predicate places. [2024-06-04 14:33:16,576 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 135 transitions, 1263 flow [2024-06-04 14:33:16,576 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 14:33:16,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:16,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:16,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 14:33:16,577 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 14:33:16,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:16,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1514678873, now seen corresponding path program 3 times [2024-06-04 14:33:16,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:16,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318289901] [2024-06-04 14:33:16,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:16,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:17,522 INFO 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 14:33:17,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:17,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318289901] [2024-06-04 14:33:17,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318289901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:17,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:17,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:33:17,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732169935] [2024-06-04 14:33:17,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:17,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:33:17,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:17,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:33:17,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:33:17,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:33:17,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 135 transitions, 1263 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 14:33:17,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:17,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:33:17,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:18,415 INFO L124 PetriNetUnfolderBase]: 2119/3210 cut-off events. [2024-06-04 14:33:18,415 INFO L125 PetriNetUnfolderBase]: For 56666/56669 co-relation queries the response was YES. [2024-06-04 14:33:18,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17493 conditions, 3210 events. 2119/3210 cut-off events. For 56666/56669 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 15909 event pairs, 647 based on Foata normal form. 4/3210 useless extension candidates. Maximal degree in co-relation 17450. Up to 2764 conditions per place. [2024-06-04 14:33:18,432 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 93 selfloop transitions, 69 changer transitions 0/167 dead transitions. [2024-06-04 14:33:18,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 167 transitions, 1755 flow [2024-06-04 14:33:18,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:33:18,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:33:18,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-04 14:33:18,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-04 14:33:18,434 INFO L175 Difference]: Start difference. First operand has 100 places, 135 transitions, 1263 flow. Second operand 8 states and 165 transitions. [2024-06-04 14:33:18,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 167 transitions, 1755 flow [2024-06-04 14:33:18,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 167 transitions, 1637 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-04 14:33:18,485 INFO L231 Difference]: Finished difference. Result has 104 places, 135 transitions, 1291 flow [2024-06-04 14:33:18,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1145, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1291, PETRI_PLACES=104, PETRI_TRANSITIONS=135} [2024-06-04 14:33:18,486 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 59 predicate places. [2024-06-04 14:33:18,486 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 135 transitions, 1291 flow [2024-06-04 14:33:18,486 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 14:33:18,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:18,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:18,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 14:33:18,487 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 14:33:18,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:18,487 INFO L85 PathProgramCache]: Analyzing trace with hash -652243163, now seen corresponding path program 3 times [2024-06-04 14:33:18,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:18,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551009030] [2024-06-04 14:33:18,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:18,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:19,414 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 14:33:19,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:19,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551009030] [2024-06-04 14:33:19,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551009030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:19,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:19,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:33:19,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055896856] [2024-06-04 14:33:19,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:19,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:33:19,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:19,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:33:19,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:33:19,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:33:19,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 135 transitions, 1291 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 14:33:19,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:19,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:33:19,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:20,324 INFO L124 PetriNetUnfolderBase]: 2130/3231 cut-off events. [2024-06-04 14:33:20,324 INFO L125 PetriNetUnfolderBase]: For 61641/61644 co-relation queries the response was YES. [2024-06-04 14:33:20,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17860 conditions, 3231 events. 2130/3231 cut-off events. For 61641/61644 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 16042 event pairs, 703 based on Foata normal form. 4/3231 useless extension candidates. Maximal degree in co-relation 17816. Up to 2903 conditions per place. [2024-06-04 14:33:20,340 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 102 selfloop transitions, 61 changer transitions 0/168 dead transitions. [2024-06-04 14:33:20,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 168 transitions, 1831 flow [2024-06-04 14:33:20,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:33:20,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:33:20,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-04 14:33:20,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:33:20,341 INFO L175 Difference]: Start difference. First operand has 104 places, 135 transitions, 1291 flow. Second operand 8 states and 160 transitions. [2024-06-04 14:33:20,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 168 transitions, 1831 flow [2024-06-04 14:33:20,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 168 transitions, 1678 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-04 14:33:20,395 INFO L231 Difference]: Finished difference. Result has 105 places, 138 transitions, 1310 flow [2024-06-04 14:33:20,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1310, PETRI_PLACES=105, PETRI_TRANSITIONS=138} [2024-06-04 14:33:20,395 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 60 predicate places. [2024-06-04 14:33:20,395 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 138 transitions, 1310 flow [2024-06-04 14:33:20,396 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 14:33:20,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:20,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:20,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 14:33:20,396 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 14:33:20,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:20,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1297525431, now seen corresponding path program 4 times [2024-06-04 14:33:20,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:20,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381634693] [2024-06-04 14:33:20,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:20,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:21,416 INFO 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 14:33:21,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:21,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381634693] [2024-06-04 14:33:21,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381634693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:21,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:21,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:33:21,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502521106] [2024-06-04 14:33:21,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:21,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:33:21,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:21,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:33:21,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:33:21,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:33:21,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 138 transitions, 1310 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 14:33:21,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:21,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:33:21,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:22,351 INFO L124 PetriNetUnfolderBase]: 2152/3265 cut-off events. [2024-06-04 14:33:22,352 INFO L125 PetriNetUnfolderBase]: For 67484/67493 co-relation queries the response was YES. [2024-06-04 14:33:22,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18164 conditions, 3265 events. 2152/3265 cut-off events. For 67484/67493 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 16181 event pairs, 650 based on Foata normal form. 7/3261 useless extension candidates. Maximal degree in co-relation 18119. Up to 2799 conditions per place. [2024-06-04 14:33:22,367 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 88 selfloop transitions, 77 changer transitions 0/170 dead transitions. [2024-06-04 14:33:22,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 170 transitions, 1843 flow [2024-06-04 14:33:22,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:33:22,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:33:22,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-04 14:33:22,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:33:22,369 INFO L175 Difference]: Start difference. First operand has 105 places, 138 transitions, 1310 flow. Second operand 8 states and 160 transitions. [2024-06-04 14:33:22,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 170 transitions, 1843 flow [2024-06-04 14:33:22,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 170 transitions, 1725 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-04 14:33:22,409 INFO L231 Difference]: Finished difference. Result has 108 places, 141 transitions, 1389 flow [2024-06-04 14:33:22,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1192, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1389, PETRI_PLACES=108, PETRI_TRANSITIONS=141} [2024-06-04 14:33:22,410 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 63 predicate places. [2024-06-04 14:33:22,410 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 141 transitions, 1389 flow [2024-06-04 14:33:22,410 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 14:33:22,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:22,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:22,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 14:33:22,410 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:33:22,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:22,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1150603789, now seen corresponding path program 5 times [2024-06-04 14:33:22,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:22,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540660088] [2024-06-04 14:33:22,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:22,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:23,416 INFO 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 14:33:23,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:23,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540660088] [2024-06-04 14:33:23,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540660088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:23,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:23,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:33:23,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643949143] [2024-06-04 14:33:23,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:23,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:33:23,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:23,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:33:23,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:33:23,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:33:23,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 141 transitions, 1389 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 14:33:23,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:23,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:33:23,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:24,371 INFO L124 PetriNetUnfolderBase]: 2174/3302 cut-off events. [2024-06-04 14:33:24,371 INFO L125 PetriNetUnfolderBase]: For 73998/74007 co-relation queries the response was YES. [2024-06-04 14:33:24,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18707 conditions, 3302 events. 2174/3302 cut-off events. For 73998/74007 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 16421 event pairs, 645 based on Foata normal form. 7/3298 useless extension candidates. Maximal degree in co-relation 18661. Up to 2818 conditions per place. [2024-06-04 14:33:24,389 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 98 selfloop transitions, 72 changer transitions 0/175 dead transitions. [2024-06-04 14:33:24,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 175 transitions, 1950 flow [2024-06-04 14:33:24,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:33:24,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:33:24,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-04 14:33:24,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630681818181818 [2024-06-04 14:33:24,391 INFO L175 Difference]: Start difference. First operand has 108 places, 141 transitions, 1389 flow. Second operand 8 states and 163 transitions. [2024-06-04 14:33:24,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 175 transitions, 1950 flow [2024-06-04 14:33:24,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 175 transitions, 1802 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-04 14:33:24,442 INFO L231 Difference]: Finished difference. Result has 111 places, 144 transitions, 1434 flow [2024-06-04 14:33:24,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1248, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1434, PETRI_PLACES=111, PETRI_TRANSITIONS=144} [2024-06-04 14:33:24,443 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 66 predicate places. [2024-06-04 14:33:24,443 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 144 transitions, 1434 flow [2024-06-04 14:33:24,443 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 14:33:24,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:24,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:24,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 14:33:24,444 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 14:33:24,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:24,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1150610299, now seen corresponding path program 6 times [2024-06-04 14:33:24,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:24,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100078709] [2024-06-04 14:33:24,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:24,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:25,386 INFO 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 14:33:25,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:25,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100078709] [2024-06-04 14:33:25,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100078709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:25,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:25,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:33:25,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85528177] [2024-06-04 14:33:25,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:25,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:33:25,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:25,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:33:25,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:33:25,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:33:25,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 144 transitions, 1434 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 14:33:25,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:25,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:33:25,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:26,302 INFO L124 PetriNetUnfolderBase]: 2164/3288 cut-off events. [2024-06-04 14:33:26,302 INFO L125 PetriNetUnfolderBase]: For 78768/78777 co-relation queries the response was YES. [2024-06-04 14:33:26,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18791 conditions, 3288 events. 2164/3288 cut-off events. For 78768/78777 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 16362 event pairs, 641 based on Foata normal form. 7/3284 useless extension candidates. Maximal degree in co-relation 18744. Up to 2810 conditions per place. [2024-06-04 14:33:26,323 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 96 selfloop transitions, 73 changer transitions 0/174 dead transitions. [2024-06-04 14:33:26,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 174 transitions, 1868 flow [2024-06-04 14:33:26,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:33:26,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:33:26,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-04 14:33:26,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:33:26,325 INFO L175 Difference]: Start difference. First operand has 111 places, 144 transitions, 1434 flow. Second operand 8 states and 160 transitions. [2024-06-04 14:33:26,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 174 transitions, 1868 flow [2024-06-04 14:33:26,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 174 transitions, 1636 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-04 14:33:26,377 INFO L231 Difference]: Finished difference. Result has 112 places, 144 transitions, 1358 flow [2024-06-04 14:33:26,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1202, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1358, PETRI_PLACES=112, PETRI_TRANSITIONS=144} [2024-06-04 14:33:26,377 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 67 predicate places. [2024-06-04 14:33:26,377 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 144 transitions, 1358 flow [2024-06-04 14:33:26,377 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 14:33:26,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:26,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:26,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 14:33:26,378 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 14:33:26,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:26,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1150610485, now seen corresponding path program 4 times [2024-06-04 14:33:26,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:26,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935054714] [2024-06-04 14:33:26,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:26,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:27,285 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 14:33:27,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:27,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935054714] [2024-06-04 14:33:27,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935054714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:27,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:27,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:33:27,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484962968] [2024-06-04 14:33:27,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:27,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:33:27,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:27,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:33:27,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:33:27,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:33:27,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 144 transitions, 1358 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 14:33:27,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:27,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:33:27,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:28,187 INFO L124 PetriNetUnfolderBase]: 2159/3280 cut-off events. [2024-06-04 14:33:28,188 INFO L125 PetriNetUnfolderBase]: For 82668/82674 co-relation queries the response was YES. [2024-06-04 14:33:28,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18870 conditions, 3280 events. 2159/3280 cut-off events. For 82668/82674 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 16314 event pairs, 717 based on Foata normal form. 3/3269 useless extension candidates. Maximal degree in co-relation 18822. Up to 2948 conditions per place. [2024-06-04 14:33:28,209 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 102 selfloop transitions, 61 changer transitions 0/168 dead transitions. [2024-06-04 14:33:28,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 168 transitions, 1764 flow [2024-06-04 14:33:28,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:33:28,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:33:28,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-04 14:33:28,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-04 14:33:28,210 INFO L175 Difference]: Start difference. First operand has 112 places, 144 transitions, 1358 flow. Second operand 8 states and 155 transitions. [2024-06-04 14:33:28,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 168 transitions, 1764 flow [2024-06-04 14:33:28,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 168 transitions, 1551 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-04 14:33:28,266 INFO L231 Difference]: Finished difference. Result has 112 places, 144 transitions, 1277 flow [2024-06-04 14:33:28,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1145, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1277, PETRI_PLACES=112, PETRI_TRANSITIONS=144} [2024-06-04 14:33:28,266 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 67 predicate places. [2024-06-04 14:33:28,267 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 144 transitions, 1277 flow [2024-06-04 14:33:28,267 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 14:33:28,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:28,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:28,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 14:33:28,267 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 14:33:28,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:28,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1142021749, now seen corresponding path program 1 times [2024-06-04 14:33:28,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:28,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110865306] [2024-06-04 14:33:28,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:28,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:29,628 INFO 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 14:33:29,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:29,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110865306] [2024-06-04 14:33:29,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110865306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:29,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:29,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:33:29,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819555453] [2024-06-04 14:33:29,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:29,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:33:29,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:29,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:33:29,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:33:29,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:33:29,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 144 transitions, 1277 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:29,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:29,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:33:29,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:30,490 INFO L124 PetriNetUnfolderBase]: 1767/2845 cut-off events. [2024-06-04 14:33:30,490 INFO L125 PetriNetUnfolderBase]: For 75962/75987 co-relation queries the response was YES. [2024-06-04 14:33:30,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16046 conditions, 2845 events. 1767/2845 cut-off events. For 75962/75987 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 15130 event pairs, 548 based on Foata normal form. 29/2843 useless extension candidates. Maximal degree in co-relation 15997. Up to 2543 conditions per place. [2024-06-04 14:33:30,508 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 141 selfloop transitions, 16 changer transitions 0/173 dead transitions. [2024-06-04 14:33:30,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 173 transitions, 1713 flow [2024-06-04 14:33:30,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:33:30,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:33:30,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-04 14:33:30,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630681818181818 [2024-06-04 14:33:30,509 INFO L175 Difference]: Start difference. First operand has 112 places, 144 transitions, 1277 flow. Second operand 8 states and 163 transitions. [2024-06-04 14:33:30,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 173 transitions, 1713 flow [2024-06-04 14:33:30,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 173 transitions, 1529 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-04 14:33:30,564 INFO L231 Difference]: Finished difference. Result has 113 places, 149 transitions, 1192 flow [2024-06-04 14:33:30,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1093, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1192, PETRI_PLACES=113, PETRI_TRANSITIONS=149} [2024-06-04 14:33:30,565 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 68 predicate places. [2024-06-04 14:33:30,565 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 149 transitions, 1192 flow [2024-06-04 14:33:30,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:30,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:30,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:30,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 14:33:30,565 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:33:30,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:30,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1035554129, now seen corresponding path program 1 times [2024-06-04 14:33:30,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:30,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559147672] [2024-06-04 14:33:30,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:30,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:31,897 INFO 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 14:33:31,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:31,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559147672] [2024-06-04 14:33:31,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559147672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:31,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:31,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:33:31,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595062561] [2024-06-04 14:33:31,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:31,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:33:31,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:31,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:33:31,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:33:31,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-06-04 14:33:31,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 149 transitions, 1192 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 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 14:33:31,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:31,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-06-04 14:33:31,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:32,364 INFO L124 PetriNetUnfolderBase]: 1491/2567 cut-off events. [2024-06-04 14:33:32,365 INFO L125 PetriNetUnfolderBase]: For 78187/78205 co-relation queries the response was YES. [2024-06-04 14:33:32,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14779 conditions, 2567 events. 1491/2567 cut-off events. For 78187/78205 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 14668 event pairs, 532 based on Foata normal form. 20/2578 useless extension candidates. Maximal degree in co-relation 14728. Up to 2112 conditions per place. [2024-06-04 14:33:32,381 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 97 selfloop transitions, 11 changer transitions 0/162 dead transitions. [2024-06-04 14:33:32,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 162 transitions, 1462 flow [2024-06-04 14:33:32,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:33:32,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:33:32,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-06-04 14:33:32,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48863636363636365 [2024-06-04 14:33:32,382 INFO L175 Difference]: Start difference. First operand has 113 places, 149 transitions, 1192 flow. Second operand 6 states and 129 transitions. [2024-06-04 14:33:32,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 162 transitions, 1462 flow [2024-06-04 14:33:32,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 162 transitions, 1403 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-04 14:33:32,446 INFO L231 Difference]: Finished difference. Result has 114 places, 152 transitions, 1193 flow [2024-06-04 14:33:32,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1193, PETRI_PLACES=114, PETRI_TRANSITIONS=152} [2024-06-04 14:33:32,447 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 69 predicate places. [2024-06-04 14:33:32,447 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 152 transitions, 1193 flow [2024-06-04 14:33:32,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 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 14:33:32,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:32,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:32,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 14:33:32,447 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:33:32,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:32,448 INFO L85 PathProgramCache]: Analyzing trace with hash -186312124, now seen corresponding path program 1 times [2024-06-04 14:33:32,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:32,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209527981] [2024-06-04 14:33:32,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:32,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:33,596 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 14:33:33,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:33,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209527981] [2024-06-04 14:33:33,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209527981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:33,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:33,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:33,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059037290] [2024-06-04 14:33:33,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:33,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:33,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:33,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:33,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:33,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:33:33,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 152 transitions, 1193 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 14:33:33,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:33,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:33:33,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:34,465 INFO L124 PetriNetUnfolderBase]: 2164/3296 cut-off events. [2024-06-04 14:33:34,465 INFO L125 PetriNetUnfolderBase]: For 99131/99135 co-relation queries the response was YES. [2024-06-04 14:33:34,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19655 conditions, 3296 events. 2164/3296 cut-off events. For 99131/99135 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 16458 event pairs, 656 based on Foata normal form. 8/3301 useless extension candidates. Maximal degree in co-relation 19603. Up to 3090 conditions per place. [2024-06-04 14:33:34,486 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 161 selfloop transitions, 27 changer transitions 0/193 dead transitions. [2024-06-04 14:33:34,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 193 transitions, 1739 flow [2024-06-04 14:33:34,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:34,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:34,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-04 14:33:34,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-04 14:33:34,487 INFO L175 Difference]: Start difference. First operand has 114 places, 152 transitions, 1193 flow. Second operand 9 states and 176 transitions. [2024-06-04 14:33:34,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 193 transitions, 1739 flow [2024-06-04 14:33:34,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 193 transitions, 1701 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-04 14:33:34,559 INFO L231 Difference]: Finished difference. Result has 119 places, 155 transitions, 1267 flow [2024-06-04 14:33:34,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1155, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1267, PETRI_PLACES=119, PETRI_TRANSITIONS=155} [2024-06-04 14:33:34,560 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 74 predicate places. [2024-06-04 14:33:34,560 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 155 transitions, 1267 flow [2024-06-04 14:33:34,560 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 14:33:34,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:34,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:34,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 14:33:34,561 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:33:34,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:34,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1816431542, now seen corresponding path program 2 times [2024-06-04 14:33:34,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:34,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231528330] [2024-06-04 14:33:34,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:34,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:35,711 INFO 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 14:33:35,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:35,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231528330] [2024-06-04 14:33:35,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231528330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:35,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:35,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:35,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686194931] [2024-06-04 14:33:35,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:35,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:35,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:35,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:35,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:35,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:33:35,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 155 transitions, 1267 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 14:33:35,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:35,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:33:35,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:36,845 INFO L124 PetriNetUnfolderBase]: 2218/3395 cut-off events. [2024-06-04 14:33:36,845 INFO L125 PetriNetUnfolderBase]: For 108937/108944 co-relation queries the response was YES. [2024-06-04 14:33:36,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20872 conditions, 3395 events. 2218/3395 cut-off events. For 108937/108944 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 17239 event pairs, 596 based on Foata normal form. 8/3399 useless extension candidates. Maximal degree in co-relation 20819. Up to 2658 conditions per place. [2024-06-04 14:33:36,867 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 117 selfloop transitions, 86 changer transitions 0/208 dead transitions. [2024-06-04 14:33:36,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 208 transitions, 2183 flow [2024-06-04 14:33:36,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:36,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:36,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 192 transitions. [2024-06-04 14:33:36,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-06-04 14:33:36,869 INFO L175 Difference]: Start difference. First operand has 119 places, 155 transitions, 1267 flow. Second operand 9 states and 192 transitions. [2024-06-04 14:33:36,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 208 transitions, 2183 flow [2024-06-04 14:33:36,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 208 transitions, 2095 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-04 14:33:36,931 INFO L231 Difference]: Finished difference. Result has 121 places, 164 transitions, 1515 flow [2024-06-04 14:33:36,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1179, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1515, PETRI_PLACES=121, PETRI_TRANSITIONS=164} [2024-06-04 14:33:36,931 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 76 predicate places. [2024-06-04 14:33:36,931 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 164 transitions, 1515 flow [2024-06-04 14:33:36,932 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 14:33:36,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:36,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:36,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 14:33:36,932 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:33:36,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:36,932 INFO L85 PathProgramCache]: Analyzing trace with hash -182587474, now seen corresponding path program 3 times [2024-06-04 14:33:36,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:36,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499394601] [2024-06-04 14:33:36,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:36,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:36,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:38,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:38,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:38,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499394601] [2024-06-04 14:33:38,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499394601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:38,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:38,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:38,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694861264] [2024-06-04 14:33:38,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:38,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:38,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:38,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:38,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:38,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:33:38,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 164 transitions, 1515 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 14:33:38,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:38,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:33:38,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:39,312 INFO L124 PetriNetUnfolderBase]: 2208/3381 cut-off events. [2024-06-04 14:33:39,313 INFO L125 PetriNetUnfolderBase]: For 116569/116576 co-relation queries the response was YES. [2024-06-04 14:33:39,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21407 conditions, 3381 events. 2208/3381 cut-off events. For 116569/116576 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 17109 event pairs, 596 based on Foata normal form. 8/3385 useless extension candidates. Maximal degree in co-relation 21353. Up to 2650 conditions per place. [2024-06-04 14:33:39,338 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 113 selfloop transitions, 87 changer transitions 0/205 dead transitions. [2024-06-04 14:33:39,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 205 transitions, 2163 flow [2024-06-04 14:33:39,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:39,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:39,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 188 transitions. [2024-06-04 14:33:39,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47474747474747475 [2024-06-04 14:33:39,341 INFO L175 Difference]: Start difference. First operand has 121 places, 164 transitions, 1515 flow. Second operand 9 states and 188 transitions. [2024-06-04 14:33:39,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 205 transitions, 2163 flow [2024-06-04 14:33:39,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 205 transitions, 2019 flow, removed 45 selfloop flow, removed 4 redundant places. [2024-06-04 14:33:39,481 INFO L231 Difference]: Finished difference. Result has 126 places, 164 transitions, 1553 flow [2024-06-04 14:33:39,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1371, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1553, PETRI_PLACES=126, PETRI_TRANSITIONS=164} [2024-06-04 14:33:39,481 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 81 predicate places. [2024-06-04 14:33:39,482 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 164 transitions, 1553 flow [2024-06-04 14:33:39,482 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 14:33:39,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:39,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:39,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 14:33:39,482 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 14:33:39,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:39,483 INFO L85 PathProgramCache]: Analyzing trace with hash -38696944, now seen corresponding path program 4 times [2024-06-04 14:33:39,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:39,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766354237] [2024-06-04 14:33:39,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:39,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:40,610 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 14:33:40,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:40,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766354237] [2024-06-04 14:33:40,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766354237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:40,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:40,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:40,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407356936] [2024-06-04 14:33:40,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:40,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:40,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:40,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:40,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:40,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:33:40,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 164 transitions, 1553 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 14:33:40,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:40,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:33:40,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:41,833 INFO L124 PetriNetUnfolderBase]: 2294/3530 cut-off events. [2024-06-04 14:33:41,833 INFO L125 PetriNetUnfolderBase]: For 128267/128270 co-relation queries the response was YES. [2024-06-04 14:33:41,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22877 conditions, 3530 events. 2294/3530 cut-off events. For 128267/128270 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 18117 event pairs, 615 based on Foata normal form. 4/3530 useless extension candidates. Maximal degree in co-relation 22821. Up to 2723 conditions per place. [2024-06-04 14:33:41,860 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 121 selfloop transitions, 90 changer transitions 0/216 dead transitions. [2024-06-04 14:33:41,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 216 transitions, 2627 flow [2024-06-04 14:33:41,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:41,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:41,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 193 transitions. [2024-06-04 14:33:41,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48737373737373735 [2024-06-04 14:33:41,862 INFO L175 Difference]: Start difference. First operand has 126 places, 164 transitions, 1553 flow. Second operand 9 states and 193 transitions. [2024-06-04 14:33:41,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 216 transitions, 2627 flow [2024-06-04 14:33:41,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 216 transitions, 2425 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-04 14:33:41,937 INFO L231 Difference]: Finished difference. Result has 127 places, 173 transitions, 1707 flow [2024-06-04 14:33:41,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1369, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1707, PETRI_PLACES=127, PETRI_TRANSITIONS=173} [2024-06-04 14:33:41,938 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 82 predicate places. [2024-06-04 14:33:41,938 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 173 transitions, 1707 flow [2024-06-04 14:33:41,938 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 14:33:41,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:41,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:41,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-04 14:33:41,938 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:33:41,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:41,939 INFO L85 PathProgramCache]: Analyzing trace with hash 289389284, now seen corresponding path program 5 times [2024-06-04 14:33:41,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:41,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117161422] [2024-06-04 14:33:41,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:41,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:43,005 INFO 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 14:33:43,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:43,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117161422] [2024-06-04 14:33:43,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117161422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:43,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:43,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:43,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006660966] [2024-06-04 14:33:43,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:43,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:43,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:43,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:43,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:43,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:33:43,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 173 transitions, 1707 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 14:33:43,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:43,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:33:43,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:44,137 INFO L124 PetriNetUnfolderBase]: 2284/3516 cut-off events. [2024-06-04 14:33:44,137 INFO L125 PetriNetUnfolderBase]: For 134004/134007 co-relation queries the response was YES. [2024-06-04 14:33:44,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22873 conditions, 3516 events. 2284/3516 cut-off events. For 134004/134007 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 18046 event pairs, 613 based on Foata normal form. 4/3516 useless extension candidates. Maximal degree in co-relation 22816. Up to 2715 conditions per place. [2024-06-04 14:33:44,161 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 118 selfloop transitions, 91 changer transitions 0/214 dead transitions. [2024-06-04 14:33:44,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 214 transitions, 2497 flow [2024-06-04 14:33:44,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:44,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:44,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 190 transitions. [2024-06-04 14:33:44,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797979797979798 [2024-06-04 14:33:44,162 INFO L175 Difference]: Start difference. First operand has 127 places, 173 transitions, 1707 flow. Second operand 9 states and 190 transitions. [2024-06-04 14:33:44,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 214 transitions, 2497 flow [2024-06-04 14:33:44,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 214 transitions, 2311 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-04 14:33:44,265 INFO L231 Difference]: Finished difference. Result has 132 places, 173 transitions, 1711 flow [2024-06-04 14:33:44,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1521, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1711, PETRI_PLACES=132, PETRI_TRANSITIONS=173} [2024-06-04 14:33:44,265 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 87 predicate places. [2024-06-04 14:33:44,265 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 173 transitions, 1711 flow [2024-06-04 14:33:44,265 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 14:33:44,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:44,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:44,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-04 14:33:44,266 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 14:33:44,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:44,266 INFO L85 PathProgramCache]: Analyzing trace with hash -38495134, now seen corresponding path program 6 times [2024-06-04 14:33:44,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:44,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768126841] [2024-06-04 14:33:44,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:44,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:44,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:45,403 INFO 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 14:33:45,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:45,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768126841] [2024-06-04 14:33:45,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768126841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:45,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:45,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:45,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523927560] [2024-06-04 14:33:45,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:45,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:45,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:45,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:45,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:45,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:33:45,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 173 transitions, 1711 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 14:33:45,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:45,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:33:45,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:46,433 INFO L124 PetriNetUnfolderBase]: 2274/3502 cut-off events. [2024-06-04 14:33:46,433 INFO L125 PetriNetUnfolderBase]: For 139656/139659 co-relation queries the response was YES. [2024-06-04 14:33:46,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22813 conditions, 3502 events. 2274/3502 cut-off events. For 139656/139659 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 17958 event pairs, 618 based on Foata normal form. 4/3502 useless extension candidates. Maximal degree in co-relation 22755. Up to 2707 conditions per place. [2024-06-04 14:33:46,456 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 110 selfloop transitions, 95 changer transitions 0/210 dead transitions. [2024-06-04 14:33:46,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 210 transitions, 2363 flow [2024-06-04 14:33:46,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:46,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:46,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 186 transitions. [2024-06-04 14:33:46,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-06-04 14:33:46,457 INFO L175 Difference]: Start difference. First operand has 132 places, 173 transitions, 1711 flow. Second operand 9 states and 186 transitions. [2024-06-04 14:33:46,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 210 transitions, 2363 flow [2024-06-04 14:33:46,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 210 transitions, 2151 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-04 14:33:46,553 INFO L231 Difference]: Finished difference. Result has 134 places, 173 transitions, 1697 flow [2024-06-04 14:33:46,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1499, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1697, PETRI_PLACES=134, PETRI_TRANSITIONS=173} [2024-06-04 14:33:46,553 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 89 predicate places. [2024-06-04 14:33:46,554 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 173 transitions, 1697 flow [2024-06-04 14:33:46,554 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 14:33:46,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:46,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:46,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-04 14:33:46,554 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:33:46,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:46,555 INFO L85 PathProgramCache]: Analyzing trace with hash -2050753664, now seen corresponding path program 1 times [2024-06-04 14:33:46,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:46,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96142162] [2024-06-04 14:33:46,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:46,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:47,508 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 14:33:47,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:47,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96142162] [2024-06-04 14:33:47,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96142162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:47,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:47,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:33:47,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628428556] [2024-06-04 14:33:47,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:47,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:33:47,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:47,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:33:47,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:33:47,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:33:47,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 173 transitions, 1697 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 14:33:47,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:47,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:33:47,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:48,100 INFO L124 PetriNetUnfolderBase]: 1963/3165 cut-off events. [2024-06-04 14:33:48,100 INFO L125 PetriNetUnfolderBase]: For 144301/144305 co-relation queries the response was YES. [2024-06-04 14:33:48,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21305 conditions, 3165 events. 1963/3165 cut-off events. For 144301/144305 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 17253 event pairs, 614 based on Foata normal form. 5/3146 useless extension candidates. Maximal degree in co-relation 21246. Up to 2782 conditions per place. [2024-06-04 14:33:48,123 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 136 selfloop transitions, 13 changer transitions 0/192 dead transitions. [2024-06-04 14:33:48,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 192 transitions, 2075 flow [2024-06-04 14:33:48,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:33:48,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:33:48,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-06-04 14:33:48,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-06-04 14:33:48,129 INFO L175 Difference]: Start difference. First operand has 134 places, 173 transitions, 1697 flow. Second operand 6 states and 124 transitions. [2024-06-04 14:33:48,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 192 transitions, 2075 flow [2024-06-04 14:33:48,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 192 transitions, 1854 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-04 14:33:48,292 INFO L231 Difference]: Finished difference. Result has 131 places, 176 transitions, 1541 flow [2024-06-04 14:33:48,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1476, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1541, PETRI_PLACES=131, PETRI_TRANSITIONS=176} [2024-06-04 14:33:48,293 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 86 predicate places. [2024-06-04 14:33:48,293 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 176 transitions, 1541 flow [2024-06-04 14:33:48,293 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 14:33:48,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:48,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:48,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-04 14:33:48,294 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 14:33:48,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:48,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1052477100, now seen corresponding path program 7 times [2024-06-04 14:33:48,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:48,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501312465] [2024-06-04 14:33:48,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:48,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:49,321 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 14:33:49,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:49,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501312465] [2024-06-04 14:33:49,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501312465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:49,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:49,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:49,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468486290] [2024-06-04 14:33:49,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:49,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:49,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:49,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:49,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:49,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:33:49,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 176 transitions, 1541 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 14:33:49,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:49,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:33:49,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:50,385 INFO L124 PetriNetUnfolderBase]: 2301/3549 cut-off events. [2024-06-04 14:33:50,386 INFO L125 PetriNetUnfolderBase]: For 154216/154222 co-relation queries the response was YES. [2024-06-04 14:33:50,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23374 conditions, 3549 events. 2301/3549 cut-off events. For 154216/154222 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 18297 event pairs, 627 based on Foata normal form. 5/3540 useless extension candidates. Maximal degree in co-relation 23314. Up to 2733 conditions per place. [2024-06-04 14:33:50,412 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 104 selfloop transitions, 104 changer transitions 0/213 dead transitions. [2024-06-04 14:33:50,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 213 transitions, 2248 flow [2024-06-04 14:33:50,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:50,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:50,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-04 14:33:50,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45707070707070707 [2024-06-04 14:33:50,413 INFO L175 Difference]: Start difference. First operand has 131 places, 176 transitions, 1541 flow. Second operand 9 states and 181 transitions. [2024-06-04 14:33:50,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 213 transitions, 2248 flow [2024-06-04 14:33:50,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 213 transitions, 2207 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-04 14:33:50,506 INFO L231 Difference]: Finished difference. Result has 136 places, 179 transitions, 1769 flow [2024-06-04 14:33:50,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1500, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1769, PETRI_PLACES=136, PETRI_TRANSITIONS=179} [2024-06-04 14:33:50,507 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 91 predicate places. [2024-06-04 14:33:50,507 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 179 transitions, 1769 flow [2024-06-04 14:33:50,507 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 14:33:50,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:50,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:50,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-04 14:33:50,507 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:33:50,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:50,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1308977610, now seen corresponding path program 8 times [2024-06-04 14:33:50,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:50,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863684247] [2024-06-04 14:33:50,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:50,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:51,605 INFO 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 14:33:51,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:51,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863684247] [2024-06-04 14:33:51,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863684247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:51,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:51,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:51,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735848160] [2024-06-04 14:33:51,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:51,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:51,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:51,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:51,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:51,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:33:51,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 179 transitions, 1769 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 14:33:51,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:51,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:33:51,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:52,719 INFO L124 PetriNetUnfolderBase]: 2323/3591 cut-off events. [2024-06-04 14:33:52,719 INFO L125 PetriNetUnfolderBase]: For 164471/164477 co-relation queries the response was YES. [2024-06-04 14:33:52,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24278 conditions, 3591 events. 2323/3591 cut-off events. For 164471/164477 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 18576 event pairs, 632 based on Foata normal form. 5/3582 useless extension candidates. Maximal degree in co-relation 24217. Up to 2752 conditions per place. [2024-06-04 14:33:52,745 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 117 selfloop transitions, 96 changer transitions 0/218 dead transitions. [2024-06-04 14:33:52,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 218 transitions, 2506 flow [2024-06-04 14:33:52,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:52,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:52,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-04 14:33:52,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671717171717172 [2024-06-04 14:33:52,747 INFO L175 Difference]: Start difference. First operand has 136 places, 179 transitions, 1769 flow. Second operand 9 states and 185 transitions. [2024-06-04 14:33:52,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 218 transitions, 2506 flow [2024-06-04 14:33:52,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 218 transitions, 2307 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-04 14:33:52,875 INFO L231 Difference]: Finished difference. Result has 139 places, 182 transitions, 1829 flow [2024-06-04 14:33:52,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1579, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1829, PETRI_PLACES=139, PETRI_TRANSITIONS=182} [2024-06-04 14:33:52,875 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 94 predicate places. [2024-06-04 14:33:52,876 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 182 transitions, 1829 flow [2024-06-04 14:33:52,876 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 14:33:52,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:52,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:52,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-04 14:33:52,876 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:33:52,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:52,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1309179420, now seen corresponding path program 9 times [2024-06-04 14:33:52,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:52,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726393271] [2024-06-04 14:33:52,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:52,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:53,880 INFO 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 14:33:53,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:53,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726393271] [2024-06-04 14:33:53,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726393271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:53,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:53,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:53,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577855088] [2024-06-04 14:33:53,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:53,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:53,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:53,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:53,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:53,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:33:54,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 182 transitions, 1829 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 14:33:54,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:54,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:33:54,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:55,039 INFO L124 PetriNetUnfolderBase]: 2345/3628 cut-off events. [2024-06-04 14:33:55,039 INFO L125 PetriNetUnfolderBase]: For 173762/173768 co-relation queries the response was YES. [2024-06-04 14:33:55,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24641 conditions, 3628 events. 2345/3628 cut-off events. For 173762/173768 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 18851 event pairs, 615 based on Foata normal form. 5/3619 useless extension candidates. Maximal degree in co-relation 24579. Up to 2771 conditions per place. [2024-06-04 14:33:55,063 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 117 selfloop transitions, 100 changer transitions 0/222 dead transitions. [2024-06-04 14:33:55,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 222 transitions, 2581 flow [2024-06-04 14:33:55,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:55,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:55,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-06-04 14:33:55,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-06-04 14:33:55,065 INFO L175 Difference]: Start difference. First operand has 139 places, 182 transitions, 1829 flow. Second operand 9 states and 184 transitions. [2024-06-04 14:33:55,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 222 transitions, 2581 flow [2024-06-04 14:33:55,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 222 transitions, 2264 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-04 14:33:55,182 INFO L231 Difference]: Finished difference. Result has 140 places, 185 transitions, 1776 flow [2024-06-04 14:33:55,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1521, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1776, PETRI_PLACES=140, PETRI_TRANSITIONS=185} [2024-06-04 14:33:55,182 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 95 predicate places. [2024-06-04 14:33:55,182 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 185 transitions, 1776 flow [2024-06-04 14:33:55,182 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 14:33:55,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:55,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:55,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-04 14:33:55,183 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 14:33:55,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:55,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1309185000, now seen corresponding path program 10 times [2024-06-04 14:33:55,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:55,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351343329] [2024-06-04 14:33:55,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:55,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:55,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:56,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:56,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:56,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351343329] [2024-06-04 14:33:56,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351343329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:56,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:56,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:56,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876834578] [2024-06-04 14:33:56,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:56,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:56,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:56,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:56,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:56,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:33:56,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 185 transitions, 1776 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 14:33:56,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:56,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:33:56,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:57,269 INFO L124 PetriNetUnfolderBase]: 2335/3614 cut-off events. [2024-06-04 14:33:57,269 INFO L125 PetriNetUnfolderBase]: For 178338/178344 co-relation queries the response was YES. [2024-06-04 14:33:57,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24537 conditions, 3614 events. 2335/3614 cut-off events. For 178338/178344 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 18756 event pairs, 613 based on Foata normal form. 5/3605 useless extension candidates. Maximal degree in co-relation 24474. Up to 2763 conditions per place. [2024-06-04 14:33:57,293 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 113 selfloop transitions, 102 changer transitions 0/220 dead transitions. [2024-06-04 14:33:57,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 220 transitions, 2326 flow [2024-06-04 14:33:57,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:57,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:57,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-04 14:33:57,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45707070707070707 [2024-06-04 14:33:57,294 INFO L175 Difference]: Start difference. First operand has 140 places, 185 transitions, 1776 flow. Second operand 9 states and 181 transitions. [2024-06-04 14:33:57,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 220 transitions, 2326 flow [2024-06-04 14:33:57,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 220 transitions, 2005 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-04 14:33:57,423 INFO L231 Difference]: Finished difference. Result has 141 places, 185 transitions, 1667 flow [2024-06-04 14:33:57,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1667, PETRI_PLACES=141, PETRI_TRANSITIONS=185} [2024-06-04 14:33:57,425 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 96 predicate places. [2024-06-04 14:33:57,425 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 185 transitions, 1667 flow [2024-06-04 14:33:57,425 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 14:33:57,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:57,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:57,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-04 14:33:57,426 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:33:57,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:57,426 INFO L85 PathProgramCache]: Analyzing trace with hash -2037421184, now seen corresponding path program 2 times [2024-06-04 14:33:57,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:57,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735533704] [2024-06-04 14:33:57,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:57,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:58,356 INFO 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 14:33:58,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:58,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735533704] [2024-06-04 14:33:58,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735533704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:58,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:58,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:33:58,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25358857] [2024-06-04 14:33:58,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:58,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:33:58,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:58,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:33:58,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:33:58,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:33:58,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 185 transitions, 1667 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 14:33:58,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:58,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:33:58,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:58,917 INFO L124 PetriNetUnfolderBase]: 1991/3240 cut-off events. [2024-06-04 14:33:58,917 INFO L125 PetriNetUnfolderBase]: For 181464/181479 co-relation queries the response was YES. [2024-06-04 14:33:58,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22731 conditions, 3240 events. 1991/3240 cut-off events. For 181464/181479 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 17953 event pairs, 617 based on Foata normal form. 11/3223 useless extension candidates. Maximal degree in co-relation 22667. Up to 2824 conditions per place. [2024-06-04 14:33:58,942 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 138 selfloop transitions, 18 changer transitions 0/199 dead transitions. [2024-06-04 14:33:58,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 199 transitions, 2049 flow [2024-06-04 14:33:58,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:33:58,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:33:58,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-06-04 14:33:58,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:33:58,943 INFO L175 Difference]: Start difference. First operand has 141 places, 185 transitions, 1667 flow. Second operand 6 states and 120 transitions. [2024-06-04 14:33:58,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 199 transitions, 2049 flow [2024-06-04 14:33:59,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 199 transitions, 1835 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-04 14:33:59,055 INFO L231 Difference]: Finished difference. Result has 139 places, 188 transitions, 1533 flow [2024-06-04 14:33:59,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1453, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1533, PETRI_PLACES=139, PETRI_TRANSITIONS=188} [2024-06-04 14:33:59,055 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 94 predicate places. [2024-06-04 14:33:59,056 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 188 transitions, 1533 flow [2024-06-04 14:33:59,056 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 14:33:59,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:59,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:59,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-04 14:33:59,056 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:33:59,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:59,057 INFO L85 PathProgramCache]: Analyzing trace with hash -2044080480, now seen corresponding path program 1 times [2024-06-04 14:33:59,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:59,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812756816] [2024-06-04 14:33:59,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:59,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:59,879 INFO 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 14:33:59,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:59,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812756816] [2024-06-04 14:33:59,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812756816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:59,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:59,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:33:59,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323508796] [2024-06-04 14:33:59,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:59,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:33:59,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:59,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:33:59,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:33:59,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:33:59,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 188 transitions, 1533 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 14:33:59,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:59,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:33:59,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:00,502 INFO L124 PetriNetUnfolderBase]: 1972/3210 cut-off events. [2024-06-04 14:34:00,503 INFO L125 PetriNetUnfolderBase]: For 163254/163279 co-relation queries the response was YES. [2024-06-04 14:34:00,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21269 conditions, 3210 events. 1972/3210 cut-off events. For 163254/163279 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 17660 event pairs, 568 based on Foata normal form. 26/3205 useless extension candidates. Maximal degree in co-relation 21204. Up to 2851 conditions per place. [2024-06-04 14:34:00,525 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 174 selfloop transitions, 11 changer transitions 0/203 dead transitions. [2024-06-04 14:34:00,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 203 transitions, 1973 flow [2024-06-04 14:34:00,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:34:00,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:34:00,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-04 14:34:00,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-04 14:34:00,527 INFO L175 Difference]: Start difference. First operand has 139 places, 188 transitions, 1533 flow. Second operand 6 states and 121 transitions. [2024-06-04 14:34:00,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 203 transitions, 1973 flow [2024-06-04 14:34:00,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 203 transitions, 1915 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-04 14:34:00,662 INFO L231 Difference]: Finished difference. Result has 141 places, 191 transitions, 1543 flow [2024-06-04 14:34:00,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1475, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1543, PETRI_PLACES=141, PETRI_TRANSITIONS=191} [2024-06-04 14:34:00,663 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 96 predicate places. [2024-06-04 14:34:00,663 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 191 transitions, 1543 flow [2024-06-04 14:34:00,663 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 14:34:00,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:00,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:00,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-04 14:34:00,663 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:34:00,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:00,663 INFO L85 PathProgramCache]: Analyzing trace with hash -814067672, now seen corresponding path program 2 times [2024-06-04 14:34:00,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:00,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087413642] [2024-06-04 14:34:00,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:00,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:01,764 INFO 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 14:34:01,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:01,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087413642] [2024-06-04 14:34:01,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087413642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:01,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:01,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:34:01,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449397408] [2024-06-04 14:34:01,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:01,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:34:01,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:01,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:34:01,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:34:01,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:34:01,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 191 transitions, 1543 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 14:34:01,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:01,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:34:01,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:02,385 INFO L124 PetriNetUnfolderBase]: 1969/3207 cut-off events. [2024-06-04 14:34:02,385 INFO L125 PetriNetUnfolderBase]: For 169633/169661 co-relation queries the response was YES. [2024-06-04 14:34:02,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21651 conditions, 3207 events. 1969/3207 cut-off events. For 169633/169661 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 17676 event pairs, 572 based on Foata normal form. 28/3203 useless extension candidates. Maximal degree in co-relation 21585. Up to 2841 conditions per place. [2024-06-04 14:34:02,410 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 168 selfloop transitions, 18 changer transitions 0/204 dead transitions. [2024-06-04 14:34:02,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 204 transitions, 1991 flow [2024-06-04 14:34:02,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:34:02,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:34:02,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-04 14:34:02,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:34:02,411 INFO L175 Difference]: Start difference. First operand has 141 places, 191 transitions, 1543 flow. Second operand 7 states and 133 transitions. [2024-06-04 14:34:02,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 204 transitions, 1991 flow [2024-06-04 14:34:02,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 204 transitions, 1943 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-04 14:34:02,556 INFO L231 Difference]: Finished difference. Result has 145 places, 196 transitions, 1602 flow [2024-06-04 14:34:02,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1497, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1602, PETRI_PLACES=145, PETRI_TRANSITIONS=196} [2024-06-04 14:34:02,556 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 100 predicate places. [2024-06-04 14:34:02,556 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 196 transitions, 1602 flow [2024-06-04 14:34:02,556 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 14:34:02,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:02,557 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 14:34:02,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-04 14:34:02,557 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 14:34:02,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:02,557 INFO L85 PathProgramCache]: Analyzing trace with hash 210309410, now seen corresponding path program 1 times [2024-06-04 14:34:02,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:02,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102158535] [2024-06-04 14:34:02,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:02,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:03,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:03,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:03,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102158535] [2024-06-04 14:34:03,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102158535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:03,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:03,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:34:03,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324355231] [2024-06-04 14:34:03,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:03,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:34:03,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:03,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:34:03,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:34:03,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:34:03,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 196 transitions, 1602 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 14:34:03,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:03,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:34:03,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:04,791 INFO L124 PetriNetUnfolderBase]: 2376/3678 cut-off events. [2024-06-04 14:34:04,791 INFO L125 PetriNetUnfolderBase]: For 213539/213543 co-relation queries the response was YES. [2024-06-04 14:34:04,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26273 conditions, 3678 events. 2376/3678 cut-off events. For 213539/213543 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 19137 event pairs, 491 based on Foata normal form. 8/3683 useless extension candidates. Maximal degree in co-relation 26205. Up to 3345 conditions per place. [2024-06-04 14:34:04,817 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 208 selfloop transitions, 31 changer transitions 0/244 dead transitions. [2024-06-04 14:34:04,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 244 transitions, 2468 flow [2024-06-04 14:34:04,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:34:04,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:34:04,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-04 14:34:04,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-04 14:34:04,818 INFO L175 Difference]: Start difference. First operand has 145 places, 196 transitions, 1602 flow. Second operand 10 states and 195 transitions. [2024-06-04 14:34:04,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 244 transitions, 2468 flow [2024-06-04 14:34:04,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 244 transitions, 2409 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-04 14:34:04,958 INFO L231 Difference]: Finished difference. Result has 152 places, 200 transitions, 1712 flow [2024-06-04 14:34:04,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1543, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1712, PETRI_PLACES=152, PETRI_TRANSITIONS=200} [2024-06-04 14:34:04,959 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 107 predicate places. [2024-06-04 14:34:04,959 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 200 transitions, 1712 flow [2024-06-04 14:34:04,959 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 14:34:04,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:04,959 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 14:34:04,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-04 14:34:04,960 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 14:34:04,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:04,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1480711810, now seen corresponding path program 2 times [2024-06-04 14:34:04,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:04,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140663044] [2024-06-04 14:34:04,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:04,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:05,998 INFO 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 14:34:05,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:05,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140663044] [2024-06-04 14:34:05,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140663044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:05,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:05,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:34:05,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097274513] [2024-06-04 14:34:05,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:05,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:34:05,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:05,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:34:05,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:34:06,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:34:06,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 200 transitions, 1712 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 14:34:06,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:06,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:34:06,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:07,079 INFO L124 PetriNetUnfolderBase]: 2368/3666 cut-off events. [2024-06-04 14:34:07,079 INFO L125 PetriNetUnfolderBase]: For 221735/221739 co-relation queries the response was YES. [2024-06-04 14:34:07,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26544 conditions, 3666 events. 2368/3666 cut-off events. For 221735/221739 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 19071 event pairs, 630 based on Foata normal form. 8/3671 useless extension candidates. Maximal degree in co-relation 26474. Up to 3392 conditions per place. [2024-06-04 14:34:07,107 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 205 selfloop transitions, 27 changer transitions 0/237 dead transitions. [2024-06-04 14:34:07,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 237 transitions, 2298 flow [2024-06-04 14:34:07,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:34:07,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:34:07,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-04 14:34:07,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44191919191919193 [2024-06-04 14:34:07,108 INFO L175 Difference]: Start difference. First operand has 152 places, 200 transitions, 1712 flow. Second operand 9 states and 175 transitions. [2024-06-04 14:34:07,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 237 transitions, 2298 flow [2024-06-04 14:34:07,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 237 transitions, 2178 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-04 14:34:07,271 INFO L231 Difference]: Finished difference. Result has 155 places, 200 transitions, 1653 flow [2024-06-04 14:34:07,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1592, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1653, PETRI_PLACES=155, PETRI_TRANSITIONS=200} [2024-06-04 14:34:07,272 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 110 predicate places. [2024-06-04 14:34:07,272 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 200 transitions, 1653 flow [2024-06-04 14:34:07,272 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 14:34:07,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:07,272 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 14:34:07,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-04 14:34:07,273 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:34:07,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:07,273 INFO L85 PathProgramCache]: Analyzing trace with hash 474799692, now seen corresponding path program 3 times [2024-06-04 14:34:07,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:07,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142253702] [2024-06-04 14:34:07,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:07,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:08,351 INFO 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 14:34:08,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:08,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142253702] [2024-06-04 14:34:08,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142253702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:08,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:08,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:34:08,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079158441] [2024-06-04 14:34:08,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:08,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:34:08,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:08,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:34:08,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:34:08,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:34:08,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 200 transitions, 1653 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 14:34:08,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:08,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:34:08,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:09,415 INFO L124 PetriNetUnfolderBase]: 2385/3694 cut-off events. [2024-06-04 14:34:09,415 INFO L125 PetriNetUnfolderBase]: For 232893/232900 co-relation queries the response was YES. [2024-06-04 14:34:09,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26829 conditions, 3694 events. 2385/3694 cut-off events. For 232893/232900 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 19253 event pairs, 636 based on Foata normal form. 10/3700 useless extension candidates. Maximal degree in co-relation 26757. Up to 3267 conditions per place. [2024-06-04 14:34:09,446 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 165 selfloop transitions, 67 changer transitions 0/237 dead transitions. [2024-06-04 14:34:09,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 237 transitions, 2285 flow [2024-06-04 14:34:09,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:34:09,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:34:09,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-04 14:34:09,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44696969696969696 [2024-06-04 14:34:09,451 INFO L175 Difference]: Start difference. First operand has 155 places, 200 transitions, 1653 flow. Second operand 9 states and 177 transitions. [2024-06-04 14:34:09,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 237 transitions, 2285 flow [2024-06-04 14:34:09,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 237 transitions, 2226 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-04 14:34:09,676 INFO L231 Difference]: Finished difference. Result has 156 places, 202 transitions, 1791 flow [2024-06-04 14:34:09,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1594, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1791, PETRI_PLACES=156, PETRI_TRANSITIONS=202} [2024-06-04 14:34:09,677 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 111 predicate places. [2024-06-04 14:34:09,677 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 202 transitions, 1791 flow [2024-06-04 14:34:09,677 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 14:34:09,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:09,677 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 14:34:09,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-04 14:34:09,678 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 14:34:09,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:09,678 INFO L85 PathProgramCache]: Analyzing trace with hash 850788956, now seen corresponding path program 1 times [2024-06-04 14:34:09,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:09,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286374369] [2024-06-04 14:34:09,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:09,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:10,562 INFO 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 14:34:10,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:10,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286374369] [2024-06-04 14:34:10,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286374369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:10,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:10,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:34:10,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408916412] [2024-06-04 14:34:10,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:10,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:34:10,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:10,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:34:10,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:34:10,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:34:10,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 202 transitions, 1791 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 14:34:10,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:10,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:34:10,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:11,371 INFO L124 PetriNetUnfolderBase]: 2098/3394 cut-off events. [2024-06-04 14:34:11,372 INFO L125 PetriNetUnfolderBase]: For 241873/241881 co-relation queries the response was YES. [2024-06-04 14:34:11,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25747 conditions, 3394 events. 2098/3394 cut-off events. For 241873/241881 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 18733 event pairs, 600 based on Foata normal form. 4/3346 useless extension candidates. Maximal degree in co-relation 25674. Up to 2898 conditions per place. [2024-06-04 14:34:11,400 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 154 selfloop transitions, 34 changer transitions 0/236 dead transitions. [2024-06-04 14:34:11,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 236 transitions, 2411 flow [2024-06-04 14:34:11,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:34:11,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:34:11,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-04 14:34:11,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45170454545454547 [2024-06-04 14:34:11,401 INFO L175 Difference]: Start difference. First operand has 156 places, 202 transitions, 1791 flow. Second operand 8 states and 159 transitions. [2024-06-04 14:34:11,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 236 transitions, 2411 flow [2024-06-04 14:34:11,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 236 transitions, 2210 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-04 14:34:11,547 INFO L231 Difference]: Finished difference. Result has 159 places, 218 transitions, 1874 flow [2024-06-04 14:34:11,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1612, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1874, PETRI_PLACES=159, PETRI_TRANSITIONS=218} [2024-06-04 14:34:11,547 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 114 predicate places. [2024-06-04 14:34:11,547 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 218 transitions, 1874 flow [2024-06-04 14:34:11,548 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 14:34:11,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:11,548 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 14:34:11,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-04 14:34:11,548 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:34:11,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:11,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1199781506, now seen corresponding path program 4 times [2024-06-04 14:34:11,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:11,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253680465] [2024-06-04 14:34:11,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:11,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:12,603 INFO 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 14:34:12,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:12,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253680465] [2024-06-04 14:34:12,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253680465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:12,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:12,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:34:12,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931399718] [2024-06-04 14:34:12,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:12,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:34:12,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:12,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:34:12,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:34:12,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:34:12,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 218 transitions, 1874 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 14:34:12,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:12,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:34:12,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:13,702 INFO L124 PetriNetUnfolderBase]: 2445/3781 cut-off events. [2024-06-04 14:34:13,702 INFO L125 PetriNetUnfolderBase]: For 254967/254970 co-relation queries the response was YES. [2024-06-04 14:34:13,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28266 conditions, 3781 events. 2445/3781 cut-off events. For 254967/254970 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 19565 event pairs, 645 based on Foata normal form. 6/3783 useless extension candidates. Maximal degree in co-relation 28190. Up to 3322 conditions per place. [2024-06-04 14:34:13,735 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 172 selfloop transitions, 74 changer transitions 0/251 dead transitions. [2024-06-04 14:34:13,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 251 transitions, 2520 flow [2024-06-04 14:34:13,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:34:13,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:34:13,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-04 14:34:13,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44191919191919193 [2024-06-04 14:34:13,736 INFO L175 Difference]: Start difference. First operand has 159 places, 218 transitions, 1874 flow. Second operand 9 states and 175 transitions. [2024-06-04 14:34:13,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 251 transitions, 2520 flow [2024-06-04 14:34:13,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 251 transitions, 2457 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-04 14:34:13,896 INFO L231 Difference]: Finished difference. Result has 166 places, 220 transitions, 2026 flow [2024-06-04 14:34:13,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1811, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2026, PETRI_PLACES=166, PETRI_TRANSITIONS=220} [2024-06-04 14:34:13,896 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 121 predicate places. [2024-06-04 14:34:13,896 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 220 transitions, 2026 flow [2024-06-04 14:34:13,897 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 14:34:13,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:13,897 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 14:34:13,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-04 14:34:13,897 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:34:13,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:13,897 INFO L85 PathProgramCache]: Analyzing trace with hash 647118954, now seen corresponding path program 1 times [2024-06-04 14:34:13,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:13,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980045375] [2024-06-04 14:34:13,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:13,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:15,047 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 14:34:15,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:15,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980045375] [2024-06-04 14:34:15,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980045375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:15,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:15,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:34:15,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851227908] [2024-06-04 14:34:15,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:15,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:34:15,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:15,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:34:15,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:34:15,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:34:15,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 220 transitions, 2026 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 14:34:15,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:15,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:34:15,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:16,174 INFO L124 PetriNetUnfolderBase]: 2462/3806 cut-off events. [2024-06-04 14:34:16,174 INFO L125 PetriNetUnfolderBase]: For 268792/268799 co-relation queries the response was YES. [2024-06-04 14:34:16,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28988 conditions, 3806 events. 2462/3806 cut-off events. For 268792/268799 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 19775 event pairs, 591 based on Foata normal form. 8/3810 useless extension candidates. Maximal degree in co-relation 28910. Up to 3474 conditions per place. [2024-06-04 14:34:16,205 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 208 selfloop transitions, 45 changer transitions 0/258 dead transitions. [2024-06-04 14:34:16,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 258 transitions, 2711 flow [2024-06-04 14:34:16,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:34:16,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:34:16,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-04 14:34:16,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44191919191919193 [2024-06-04 14:34:16,207 INFO L175 Difference]: Start difference. First operand has 166 places, 220 transitions, 2026 flow. Second operand 9 states and 175 transitions. [2024-06-04 14:34:16,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 258 transitions, 2711 flow [2024-06-04 14:34:16,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 258 transitions, 2514 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-04 14:34:16,469 INFO L231 Difference]: Finished difference. Result has 169 places, 225 transitions, 2005 flow [2024-06-04 14:34:16,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1829, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2005, PETRI_PLACES=169, PETRI_TRANSITIONS=225} [2024-06-04 14:34:16,469 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 124 predicate places. [2024-06-04 14:34:16,469 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 225 transitions, 2005 flow [2024-06-04 14:34:16,469 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 14:34:16,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:16,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:16,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-04 14:34:16,470 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 14:34:16,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:16,470 INFO L85 PathProgramCache]: Analyzing trace with hash 851147440, now seen corresponding path program 1 times [2024-06-04 14:34:16,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:16,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326820461] [2024-06-04 14:34:16,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:16,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:17,716 INFO 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 14:34:17,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:17,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326820461] [2024-06-04 14:34:17,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326820461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:17,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:17,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:34:17,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748018483] [2024-06-04 14:34:17,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:17,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:34:17,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:17,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:34:17,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:34:17,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:34:17,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 225 transitions, 2005 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 14:34:17,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:17,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:34:17,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:18,486 INFO L124 PetriNetUnfolderBase]: 2127/3436 cut-off events. [2024-06-04 14:34:18,486 INFO L125 PetriNetUnfolderBase]: For 271269/271281 co-relation queries the response was YES. [2024-06-04 14:34:18,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27184 conditions, 3436 events. 2127/3436 cut-off events. For 271269/271281 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 18871 event pairs, 571 based on Foata normal form. 5/3416 useless extension candidates. Maximal degree in co-relation 27104. Up to 2986 conditions per place. [2024-06-04 14:34:18,519 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 174 selfloop transitions, 21 changer transitions 0/244 dead transitions. [2024-06-04 14:34:18,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 244 transitions, 2486 flow [2024-06-04 14:34:18,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:34:18,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:34:18,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-04 14:34:18,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:34:18,520 INFO L175 Difference]: Start difference. First operand has 169 places, 225 transitions, 2005 flow. Second operand 7 states and 140 transitions. [2024-06-04 14:34:18,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 244 transitions, 2486 flow [2024-06-04 14:34:18,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 244 transitions, 2353 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-04 14:34:18,779 INFO L231 Difference]: Finished difference. Result has 170 places, 228 transitions, 1962 flow [2024-06-04 14:34:18,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1872, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1962, PETRI_PLACES=170, PETRI_TRANSITIONS=228} [2024-06-04 14:34:18,780 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 125 predicate places. [2024-06-04 14:34:18,780 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 228 transitions, 1962 flow [2024-06-04 14:34:18,780 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 14:34:18,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:18,780 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 14:34:18,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-04 14:34:18,781 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 14:34:18,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:18,781 INFO L85 PathProgramCache]: Analyzing trace with hash 584404934, now seen corresponding path program 2 times [2024-06-04 14:34:18,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:18,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290383290] [2024-06-04 14:34:18,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:18,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:19,858 INFO 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 14:34:19,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:19,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290383290] [2024-06-04 14:34:19,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290383290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:19,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:19,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:34:19,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269092447] [2024-06-04 14:34:19,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:19,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:34:19,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:19,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:34:19,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:34:19,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:34:19,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 228 transitions, 1962 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 14:34:19,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:19,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:34:19,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:20,635 INFO L124 PetriNetUnfolderBase]: 2159/3476 cut-off events. [2024-06-04 14:34:20,635 INFO L125 PetriNetUnfolderBase]: For 284009/284020 co-relation queries the response was YES. [2024-06-04 14:34:20,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27857 conditions, 3476 events. 2159/3476 cut-off events. For 284009/284020 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 19029 event pairs, 579 based on Foata normal form. 4/3444 useless extension candidates. Maximal degree in co-relation 27776. Up to 2957 conditions per place. [2024-06-04 14:34:20,666 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 162 selfloop transitions, 39 changer transitions 0/250 dead transitions. [2024-06-04 14:34:20,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 250 transitions, 2608 flow [2024-06-04 14:34:20,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:34:20,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:34:20,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-04 14:34:20,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-04 14:34:20,668 INFO L175 Difference]: Start difference. First operand has 170 places, 228 transitions, 1962 flow. Second operand 7 states and 143 transitions. [2024-06-04 14:34:20,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 250 transitions, 2608 flow [2024-06-04 14:34:20,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 250 transitions, 2540 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-04 14:34:20,975 INFO L231 Difference]: Finished difference. Result has 172 places, 234 transitions, 2084 flow [2024-06-04 14:34:20,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1894, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2084, PETRI_PLACES=172, PETRI_TRANSITIONS=234} [2024-06-04 14:34:20,976 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 127 predicate places. [2024-06-04 14:34:20,977 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 234 transitions, 2084 flow [2024-06-04 14:34:20,977 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 14:34:20,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:20,977 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 14:34:20,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-04 14:34:20,977 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:34:20,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:20,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1901235608, now seen corresponding path program 5 times [2024-06-04 14:34:20,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:20,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024523664] [2024-06-04 14:34:20,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:20,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:22,182 INFO 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 14:34:22,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:22,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024523664] [2024-06-04 14:34:22,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024523664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:22,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:22,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:34:22,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268969778] [2024-06-04 14:34:22,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:22,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:34:22,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:22,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:34:22,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:34:22,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:34:22,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 234 transitions, 2084 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 14:34:22,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:22,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:34:22,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:23,311 INFO L124 PetriNetUnfolderBase]: 2485/3847 cut-off events. [2024-06-04 14:34:23,311 INFO L125 PetriNetUnfolderBase]: For 300867/300867 co-relation queries the response was YES. [2024-06-04 14:34:23,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30452 conditions, 3847 events. 2485/3847 cut-off events. For 300867/300867 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 19975 event pairs, 627 based on Foata normal form. 4/3835 useless extension candidates. Maximal degree in co-relation 30370. Up to 3380 conditions per place. [2024-06-04 14:34:23,346 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 186 selfloop transitions, 73 changer transitions 0/264 dead transitions. [2024-06-04 14:34:23,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 264 transitions, 2754 flow [2024-06-04 14:34:23,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:34:23,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:34:23,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-04 14:34:23,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-04 14:34:23,348 INFO L175 Difference]: Start difference. First operand has 172 places, 234 transitions, 2084 flow. Second operand 9 states and 172 transitions. [2024-06-04 14:34:23,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 264 transitions, 2754 flow [2024-06-04 14:34:23,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 264 transitions, 2676 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-04 14:34:23,639 INFO L231 Difference]: Finished difference. Result has 178 places, 236 transitions, 2225 flow [2024-06-04 14:34:23,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2006, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2225, PETRI_PLACES=178, PETRI_TRANSITIONS=236} [2024-06-04 14:34:23,640 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 133 predicate places. [2024-06-04 14:34:23,640 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 236 transitions, 2225 flow [2024-06-04 14:34:23,640 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 14:34:23,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:23,640 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 14:34:23,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-04 14:34:23,640 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 14:34:23,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:23,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1733196044, now seen corresponding path program 2 times [2024-06-04 14:34:23,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:23,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046465254] [2024-06-04 14:34:23,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:23,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:24,950 INFO 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 14:34:24,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:24,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046465254] [2024-06-04 14:34:24,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046465254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:24,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:24,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:34:24,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143820343] [2024-06-04 14:34:24,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:24,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:34:24,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:24,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:34:24,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:34:25,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:34:25,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 236 transitions, 2225 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 14:34:25,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:25,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:34:25,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:26,350 INFO L124 PetriNetUnfolderBase]: 2513/3900 cut-off events. [2024-06-04 14:34:26,350 INFO L125 PetriNetUnfolderBase]: For 313796/313805 co-relation queries the response was YES. [2024-06-04 14:34:26,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31324 conditions, 3900 events. 2513/3900 cut-off events. For 313796/313805 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 20510 event pairs, 588 based on Foata normal form. 10/3903 useless extension candidates. Maximal degree in co-relation 31240. Up to 3544 conditions per place. [2024-06-04 14:34:26,389 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 219 selfloop transitions, 49 changer transitions 0/273 dead transitions. [2024-06-04 14:34:26,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 273 transitions, 2953 flow [2024-06-04 14:34:26,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:34:26,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:34:26,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-04 14:34:26,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:34:26,399 INFO L175 Difference]: Start difference. First operand has 178 places, 236 transitions, 2225 flow. Second operand 9 states and 171 transitions. [2024-06-04 14:34:26,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 273 transitions, 2953 flow [2024-06-04 14:34:26,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 273 transitions, 2752 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-04 14:34:26,801 INFO L231 Difference]: Finished difference. Result has 181 places, 242 transitions, 2226 flow [2024-06-04 14:34:26,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2024, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2226, PETRI_PLACES=181, PETRI_TRANSITIONS=242} [2024-06-04 14:34:26,802 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 136 predicate places. [2024-06-04 14:34:26,802 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 242 transitions, 2226 flow [2024-06-04 14:34:26,802 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 14:34:26,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:26,803 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 14:34:26,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-04 14:34:26,803 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 14:34:26,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:26,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1923352470, now seen corresponding path program 3 times [2024-06-04 14:34:26,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:26,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519491504] [2024-06-04 14:34:26,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:26,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:28,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:28,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:28,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519491504] [2024-06-04 14:34:28,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519491504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:28,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:28,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:34:28,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006783976] [2024-06-04 14:34:28,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:28,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:34:28,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:28,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:34:28,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:34:28,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:34:28,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 242 transitions, 2226 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 14:34:28,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:28,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:34:28,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:29,188 INFO L124 PetriNetUnfolderBase]: 2530/3918 cut-off events. [2024-06-04 14:34:29,188 INFO L125 PetriNetUnfolderBase]: For 327315/327324 co-relation queries the response was YES. [2024-06-04 14:34:29,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31956 conditions, 3918 events. 2530/3918 cut-off events. For 327315/327324 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 20489 event pairs, 588 based on Foata normal form. 10/3921 useless extension candidates. Maximal degree in co-relation 31870. Up to 3571 conditions per place. [2024-06-04 14:34:29,223 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 224 selfloop transitions, 49 changer transitions 0/278 dead transitions. [2024-06-04 14:34:29,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 278 transitions, 2967 flow [2024-06-04 14:34:29,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:34:29,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:34:29,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-04 14:34:29,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-04 14:34:29,225 INFO L175 Difference]: Start difference. First operand has 181 places, 242 transitions, 2226 flow. Second operand 9 states and 172 transitions. [2024-06-04 14:34:29,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 278 transitions, 2967 flow [2024-06-04 14:34:29,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 278 transitions, 2812 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-04 14:34:29,611 INFO L231 Difference]: Finished difference. Result has 185 places, 247 transitions, 2275 flow [2024-06-04 14:34:29,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2075, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2275, PETRI_PLACES=185, PETRI_TRANSITIONS=247} [2024-06-04 14:34:29,611 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 140 predicate places. [2024-06-04 14:34:29,611 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 247 transitions, 2275 flow [2024-06-04 14:34:29,611 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 14:34:29,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:29,611 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 14:34:29,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-04 14:34:29,612 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 14:34:29,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:29,612 INFO L85 PathProgramCache]: Analyzing trace with hash 2018295914, now seen corresponding path program 4 times [2024-06-04 14:34:29,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:29,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274258204] [2024-06-04 14:34:29,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:29,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:31,042 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 14:34:31,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:31,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274258204] [2024-06-04 14:34:31,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274258204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:31,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:31,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:34:31,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224483164] [2024-06-04 14:34:31,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:31,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:34:31,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:31,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:34:31,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:34:31,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:34:31,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 247 transitions, 2275 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 14:34:31,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:31,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:34:31,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:32,263 INFO L124 PetriNetUnfolderBase]: 2547/3939 cut-off events. [2024-06-04 14:34:32,263 INFO L125 PetriNetUnfolderBase]: For 341299/341308 co-relation queries the response was YES. [2024-06-04 14:34:32,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32659 conditions, 3939 events. 2547/3939 cut-off events. For 341299/341308 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 20590 event pairs, 588 based on Foata normal form. 10/3942 useless extension candidates. Maximal degree in co-relation 32571. Up to 3598 conditions per place. [2024-06-04 14:34:32,301 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 221 selfloop transitions, 55 changer transitions 0/281 dead transitions. [2024-06-04 14:34:32,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 281 transitions, 3014 flow [2024-06-04 14:34:32,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:34:32,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:34:32,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-04 14:34:32,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-06-04 14:34:32,302 INFO L175 Difference]: Start difference. First operand has 185 places, 247 transitions, 2275 flow. Second operand 9 states and 170 transitions. [2024-06-04 14:34:32,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 281 transitions, 3014 flow [2024-06-04 14:34:32,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 281 transitions, 2853 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-04 14:34:32,630 INFO L231 Difference]: Finished difference. Result has 188 places, 251 transitions, 2321 flow [2024-06-04 14:34:32,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2118, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2321, PETRI_PLACES=188, PETRI_TRANSITIONS=251} [2024-06-04 14:34:32,630 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 143 predicate places. [2024-06-04 14:34:32,630 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 251 transitions, 2321 flow [2024-06-04 14:34:32,630 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 14:34:32,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:32,631 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 14:34:32,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-04 14:34:32,631 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 14:34:32,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:32,631 INFO L85 PathProgramCache]: Analyzing trace with hash 2028771434, now seen corresponding path program 5 times [2024-06-04 14:34:32,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:32,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83757250] [2024-06-04 14:34:32,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:32,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:33,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:33,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:33,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83757250] [2024-06-04 14:34:33,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83757250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:33,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:33,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:34:33,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256547255] [2024-06-04 14:34:33,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:33,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:34:33,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:33,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:34:33,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:34:33,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:34:33,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 251 transitions, 2321 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 14:34:33,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:33,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:34:33,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:34,924 INFO L124 PetriNetUnfolderBase]: 2539/3927 cut-off events. [2024-06-04 14:34:34,924 INFO L125 PetriNetUnfolderBase]: For 348696/348705 co-relation queries the response was YES. [2024-06-04 14:34:34,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32622 conditions, 3927 events. 2539/3927 cut-off events. For 348696/348705 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 20512 event pairs, 545 based on Foata normal form. 10/3930 useless extension candidates. Maximal degree in co-relation 32533. Up to 3491 conditions per place. [2024-06-04 14:34:34,956 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 215 selfloop transitions, 64 changer transitions 0/284 dead transitions. [2024-06-04 14:34:34,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 284 transitions, 3052 flow [2024-06-04 14:34:34,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:34:34,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:34:34,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-04 14:34:34,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:34:34,957 INFO L175 Difference]: Start difference. First operand has 188 places, 251 transitions, 2321 flow. Second operand 9 states and 171 transitions. [2024-06-04 14:34:34,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 284 transitions, 3052 flow [2024-06-04 14:34:35,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 284 transitions, 2903 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-04 14:34:35,313 INFO L231 Difference]: Finished difference. Result has 192 places, 253 transitions, 2381 flow [2024-06-04 14:34:35,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2172, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2381, PETRI_PLACES=192, PETRI_TRANSITIONS=253} [2024-06-04 14:34:35,313 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 147 predicate places. [2024-06-04 14:34:35,313 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 253 transitions, 2381 flow [2024-06-04 14:34:35,314 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 14:34:35,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:35,314 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 14:34:35,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-04 14:34:35,314 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:34:35,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:35,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1264929550, now seen corresponding path program 2 times [2024-06-04 14:34:35,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:35,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064586910] [2024-06-04 14:34:35,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:35,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:36,478 INFO 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 14:34:36,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:36,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064586910] [2024-06-04 14:34:36,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064586910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:36,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:36,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:34:36,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606879205] [2024-06-04 14:34:36,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:36,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:34:36,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:36,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:34:36,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:34:36,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:34:36,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 253 transitions, 2381 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 14:34:36,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:36,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:34:36,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:37,230 INFO L124 PetriNetUnfolderBase]: 2194/3543 cut-off events. [2024-06-04 14:34:37,230 INFO L125 PetriNetUnfolderBase]: For 351515/351532 co-relation queries the response was YES. [2024-06-04 14:34:37,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30572 conditions, 3543 events. 2194/3543 cut-off events. For 351515/351532 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 19493 event pairs, 572 based on Foata normal form. 7/3507 useless extension candidates. Maximal degree in co-relation 30482. Up to 3076 conditions per place. [2024-06-04 14:34:37,267 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 191 selfloop transitions, 32 changer transitions 0/273 dead transitions. [2024-06-04 14:34:37,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 273 transitions, 3088 flow [2024-06-04 14:34:37,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:34:37,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:34:37,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-04 14:34:37,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44805194805194803 [2024-06-04 14:34:37,268 INFO L175 Difference]: Start difference. First operand has 192 places, 253 transitions, 2381 flow. Second operand 7 states and 138 transitions. [2024-06-04 14:34:37,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 273 transitions, 3088 flow [2024-06-04 14:34:37,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 273 transitions, 2897 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-04 14:34:37,592 INFO L231 Difference]: Finished difference. Result has 193 places, 261 transitions, 2393 flow [2024-06-04 14:34:37,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2190, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2393, PETRI_PLACES=193, PETRI_TRANSITIONS=261} [2024-06-04 14:34:37,593 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 148 predicate places. [2024-06-04 14:34:37,593 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 261 transitions, 2393 flow [2024-06-04 14:34:37,593 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 14:34:37,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:37,593 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 14:34:37,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-04 14:34:37,593 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:34:37,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:37,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1264453886, now seen corresponding path program 3 times [2024-06-04 14:34:37,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:37,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113358713] [2024-06-04 14:34:37,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:37,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:37,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:38,812 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 14:34:38,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:38,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113358713] [2024-06-04 14:34:38,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113358713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:38,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:38,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:34:38,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817377062] [2024-06-04 14:34:38,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:38,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:34:38,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:38,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:34:38,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:34:38,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:34:38,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 261 transitions, 2393 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 14:34:38,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:38,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:34:38,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:39,585 INFO L124 PetriNetUnfolderBase]: 2208/3550 cut-off events. [2024-06-04 14:34:39,585 INFO L125 PetriNetUnfolderBase]: For 361923/361925 co-relation queries the response was YES. [2024-06-04 14:34:39,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30748 conditions, 3550 events. 2208/3550 cut-off events. For 361923/361925 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 19422 event pairs, 581 based on Foata normal form. 3/3496 useless extension candidates. Maximal degree in co-relation 30656. Up to 3028 conditions per place. [2024-06-04 14:34:39,622 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 180 selfloop transitions, 45 changer transitions 0/275 dead transitions. [2024-06-04 14:34:39,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 275 transitions, 3043 flow [2024-06-04 14:34:39,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:34:39,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:34:39,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-04 14:34:39,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512987012987013 [2024-06-04 14:34:39,623 INFO L175 Difference]: Start difference. First operand has 193 places, 261 transitions, 2393 flow. Second operand 7 states and 139 transitions. [2024-06-04 14:34:39,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 275 transitions, 3043 flow [2024-06-04 14:34:40,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 275 transitions, 2965 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-04 14:34:40,053 INFO L231 Difference]: Finished difference. Result has 197 places, 264 transitions, 2475 flow [2024-06-04 14:34:40,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2315, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2475, PETRI_PLACES=197, PETRI_TRANSITIONS=264} [2024-06-04 14:34:40,053 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 152 predicate places. [2024-06-04 14:34:40,053 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 264 transitions, 2475 flow [2024-06-04 14:34:40,053 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 14:34:40,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:40,053 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 14:34:40,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-04 14:34:40,054 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:34:40,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:40,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1264454320, now seen corresponding path program 3 times [2024-06-04 14:34:40,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:40,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859643708] [2024-06-04 14:34:40,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:40,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:41,291 INFO 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 14:34:41,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:41,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859643708] [2024-06-04 14:34:41,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859643708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:41,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:41,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:34:41,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71891083] [2024-06-04 14:34:41,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:41,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:34:41,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:41,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:34:41,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:34:41,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:34:41,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 264 transitions, 2475 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 14:34:41,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:41,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:34:41,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:42,115 INFO L124 PetriNetUnfolderBase]: 2188/3535 cut-off events. [2024-06-04 14:34:42,115 INFO L125 PetriNetUnfolderBase]: For 372525/372534 co-relation queries the response was YES. [2024-06-04 14:34:42,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31175 conditions, 3535 events. 2188/3535 cut-off events. For 372525/372534 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 19487 event pairs, 572 based on Foata normal form. 7/3500 useless extension candidates. Maximal degree in co-relation 31081. Up to 3078 conditions per place. [2024-06-04 14:34:42,156 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 199 selfloop transitions, 27 changer transitions 0/276 dead transitions. [2024-06-04 14:34:42,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 276 transitions, 2973 flow [2024-06-04 14:34:42,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:34:42,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:34:42,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-04 14:34:42,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-04 14:34:42,157 INFO L175 Difference]: Start difference. First operand has 197 places, 264 transitions, 2475 flow. Second operand 8 states and 150 transitions. [2024-06-04 14:34:42,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 276 transitions, 2973 flow [2024-06-04 14:34:42,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 276 transitions, 2803 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-04 14:34:42,607 INFO L231 Difference]: Finished difference. Result has 201 places, 266 transitions, 2389 flow [2024-06-04 14:34:42,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2305, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2389, PETRI_PLACES=201, PETRI_TRANSITIONS=266} [2024-06-04 14:34:42,607 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 156 predicate places. [2024-06-04 14:34:42,608 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 266 transitions, 2389 flow [2024-06-04 14:34:42,608 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 14:34:42,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:42,608 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 14:34:42,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-04 14:34:42,608 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:34:42,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:42,608 INFO L85 PathProgramCache]: Analyzing trace with hash -404777158, now seen corresponding path program 4 times [2024-06-04 14:34:42,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:42,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254532949] [2024-06-04 14:34:42,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:42,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:43,586 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 14:34:43,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:43,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254532949] [2024-06-04 14:34:43,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254532949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:43,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:43,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:34:43,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487823654] [2024-06-04 14:34:43,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:43,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:34:43,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:43,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:34:43,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:34:43,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:34:43,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 266 transitions, 2389 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 14:34:43,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:43,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:34:43,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:44,482 INFO L124 PetriNetUnfolderBase]: 2231/3605 cut-off events. [2024-06-04 14:34:44,482 INFO L125 PetriNetUnfolderBase]: For 386058/386062 co-relation queries the response was YES. [2024-06-04 14:34:44,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31627 conditions, 3605 events. 2231/3605 cut-off events. For 386058/386062 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 19957 event pairs, 565 based on Foata normal form. 6/3573 useless extension candidates. Maximal degree in co-relation 31531. Up to 3094 conditions per place. [2024-06-04 14:34:44,603 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 206 selfloop transitions, 51 changer transitions 0/307 dead transitions. [2024-06-04 14:34:44,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 307 transitions, 3158 flow [2024-06-04 14:34:44,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:34:44,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:34:44,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-04 14:34:44,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715909090909091 [2024-06-04 14:34:44,605 INFO L175 Difference]: Start difference. First operand has 201 places, 266 transitions, 2389 flow. Second operand 8 states and 166 transitions. [2024-06-04 14:34:44,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 307 transitions, 3158 flow [2024-06-04 14:34:45,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 307 transitions, 3111 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-04 14:34:45,052 INFO L231 Difference]: Finished difference. Result has 206 places, 285 transitions, 2676 flow [2024-06-04 14:34:45,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2343, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2676, PETRI_PLACES=206, PETRI_TRANSITIONS=285} [2024-06-04 14:34:45,053 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 161 predicate places. [2024-06-04 14:34:45,053 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 285 transitions, 2676 flow [2024-06-04 14:34:45,053 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 14:34:45,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:45,053 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 14:34:45,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-04 14:34:45,054 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 14:34:45,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:45,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1752185610, now seen corresponding path program 5 times [2024-06-04 14:34:45,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:45,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639777757] [2024-06-04 14:34:45,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:45,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:45,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:45,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:45,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639777757] [2024-06-04 14:34:45,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639777757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:45,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:45,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:34:45,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178686196] [2024-06-04 14:34:45,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:45,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:34:45,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:45,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:34:45,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:34:45,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:34:45,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 285 transitions, 2676 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 14:34:45,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:45,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:34:45,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:46,771 INFO L124 PetriNetUnfolderBase]: 2252/3637 cut-off events. [2024-06-04 14:34:46,771 INFO L125 PetriNetUnfolderBase]: For 396230/396234 co-relation queries the response was YES. [2024-06-04 14:34:46,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32185 conditions, 3637 events. 2252/3637 cut-off events. For 396230/396234 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 20162 event pairs, 565 based on Foata normal form. 6/3605 useless extension candidates. Maximal degree in co-relation 32086. Up to 3118 conditions per place. [2024-06-04 14:34:46,807 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 210 selfloop transitions, 61 changer transitions 0/321 dead transitions. [2024-06-04 14:34:46,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 321 transitions, 3456 flow [2024-06-04 14:34:46,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:34:46,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:34:46,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-04 14:34:46,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715909090909091 [2024-06-04 14:34:46,810 INFO L175 Difference]: Start difference. First operand has 206 places, 285 transitions, 2676 flow. Second operand 8 states and 166 transitions. [2024-06-04 14:34:46,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 321 transitions, 3456 flow [2024-06-04 14:34:47,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 321 transitions, 3280 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-04 14:34:47,325 INFO L231 Difference]: Finished difference. Result has 210 places, 298 transitions, 2844 flow [2024-06-04 14:34:47,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2542, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2844, PETRI_PLACES=210, PETRI_TRANSITIONS=298} [2024-06-04 14:34:47,325 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 165 predicate places. [2024-06-04 14:34:47,326 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 298 transitions, 2844 flow [2024-06-04 14:34:47,326 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 14:34:47,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:47,326 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 14:34:47,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-04 14:34:47,326 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 14:34:47,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:47,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1057866197, now seen corresponding path program 1 times [2024-06-04 14:34:47,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:47,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119925731] [2024-06-04 14:34:47,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:47,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:48,188 INFO 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 14:34:48,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:48,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119925731] [2024-06-04 14:34:48,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119925731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:48,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:48,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:34:48,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757270734] [2024-06-04 14:34:48,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:48,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:34:48,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:48,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:34:48,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:34:48,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:34:48,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 298 transitions, 2844 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 14:34:48,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:48,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:34:48,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:49,141 INFO L124 PetriNetUnfolderBase]: 2359/3790 cut-off events. [2024-06-04 14:34:49,141 INFO L125 PetriNetUnfolderBase]: For 413509/413526 co-relation queries the response was YES. [2024-06-04 14:34:49,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32915 conditions, 3790 events. 2359/3790 cut-off events. For 413509/413526 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 21028 event pairs, 561 based on Foata normal form. 19/3796 useless extension candidates. Maximal degree in co-relation 32816. Up to 3318 conditions per place. [2024-06-04 14:34:49,179 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 265 selfloop transitions, 16 changer transitions 0/317 dead transitions. [2024-06-04 14:34:49,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 317 transitions, 3520 flow [2024-06-04 14:34:49,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:34:49,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:34:49,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-04 14:34:49,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-04 14:34:49,181 INFO L175 Difference]: Start difference. First operand has 210 places, 298 transitions, 2844 flow. Second operand 8 states and 154 transitions. [2024-06-04 14:34:49,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 317 transitions, 3520 flow [2024-06-04 14:34:49,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 317 transitions, 3412 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-04 14:34:49,482 INFO L231 Difference]: Finished difference. Result has 212 places, 301 transitions, 2828 flow [2024-06-04 14:34:49,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2736, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2828, PETRI_PLACES=212, PETRI_TRANSITIONS=301} [2024-06-04 14:34:49,483 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 167 predicate places. [2024-06-04 14:34:49,483 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 301 transitions, 2828 flow [2024-06-04 14:34:49,483 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 14:34:49,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:49,483 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 14:34:49,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-04 14:34:49,483 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 14:34:49,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:49,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1058015927, now seen corresponding path program 2 times [2024-06-04 14:34:49,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:49,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588929363] [2024-06-04 14:34:49,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:49,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:50,401 INFO 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 14:34:50,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:50,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588929363] [2024-06-04 14:34:50,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588929363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:50,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:50,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:34:50,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754431867] [2024-06-04 14:34:50,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:50,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:34:50,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:50,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:34:50,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:34:50,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:34:50,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 301 transitions, 2828 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 14:34:50,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:50,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:34:50,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:51,297 INFO L124 PetriNetUnfolderBase]: 2369/3806 cut-off events. [2024-06-04 14:34:51,298 INFO L125 PetriNetUnfolderBase]: For 426233/426250 co-relation queries the response was YES. [2024-06-04 14:34:51,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33404 conditions, 3806 events. 2369/3806 cut-off events. For 426233/426250 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 21088 event pairs, 561 based on Foata normal form. 19/3812 useless extension candidates. Maximal degree in co-relation 33305. Up to 3323 conditions per place. [2024-06-04 14:34:51,349 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 262 selfloop transitions, 20 changer transitions 0/318 dead transitions. [2024-06-04 14:34:51,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 318 transitions, 3508 flow [2024-06-04 14:34:51,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:34:51,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:34:51,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-04 14:34:51,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577922077922078 [2024-06-04 14:34:51,351 INFO L175 Difference]: Start difference. First operand has 212 places, 301 transitions, 2828 flow. Second operand 7 states and 141 transitions. [2024-06-04 14:34:51,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 318 transitions, 3508 flow [2024-06-04 14:34:51,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 318 transitions, 3431 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-04 14:34:51,873 INFO L231 Difference]: Finished difference. Result has 212 places, 304 transitions, 2857 flow [2024-06-04 14:34:51,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2751, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2857, PETRI_PLACES=212, PETRI_TRANSITIONS=304} [2024-06-04 14:34:51,873 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 167 predicate places. [2024-06-04 14:34:51,873 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 304 transitions, 2857 flow [2024-06-04 14:34:51,873 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 14:34:51,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:51,874 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 14:34:51,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-04 14:34:51,874 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 14:34:51,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:51,874 INFO L85 PathProgramCache]: Analyzing trace with hash 528143338, now seen corresponding path program 1 times [2024-06-04 14:34:51,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:51,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431477071] [2024-06-04 14:34:51,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:51,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:53,144 INFO 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 14:34:53,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:53,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431477071] [2024-06-04 14:34:53,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431477071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:53,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:53,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:34:53,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949519724] [2024-06-04 14:34:53,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:53,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:34:53,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:53,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:34:53,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:34:53,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:34:53,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 304 transitions, 2857 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 14:34:53,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:53,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:34:53,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:54,022 INFO L124 PetriNetUnfolderBase]: 2379/3822 cut-off events. [2024-06-04 14:34:54,022 INFO L125 PetriNetUnfolderBase]: For 441649/441666 co-relation queries the response was YES. [2024-06-04 14:34:54,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33975 conditions, 3822 events. 2379/3822 cut-off events. For 441649/441666 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 21212 event pairs, 560 based on Foata normal form. 20/3829 useless extension candidates. Maximal degree in co-relation 33876. Up to 3352 conditions per place. [2024-06-04 14:34:54,062 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 269 selfloop transitions, 15 changer transitions 0/320 dead transitions. [2024-06-04 14:34:54,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 320 transitions, 3519 flow [2024-06-04 14:34:54,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:34:54,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:34:54,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-04 14:34:54,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44805194805194803 [2024-06-04 14:34:54,063 INFO L175 Difference]: Start difference. First operand has 212 places, 304 transitions, 2857 flow. Second operand 7 states and 138 transitions. [2024-06-04 14:34:54,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 320 transitions, 3519 flow [2024-06-04 14:34:54,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 320 transitions, 3435 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-04 14:34:54,617 INFO L231 Difference]: Finished difference. Result has 214 places, 307 transitions, 2865 flow [2024-06-04 14:34:54,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2773, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2865, PETRI_PLACES=214, PETRI_TRANSITIONS=307} [2024-06-04 14:34:54,618 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 169 predicate places. [2024-06-04 14:34:54,618 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 307 transitions, 2865 flow [2024-06-04 14:34:54,618 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 14:34:54,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:54,618 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 14:34:54,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-04 14:34:54,618 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 14:34:54,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:54,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1264669584, now seen corresponding path program 2 times [2024-06-04 14:34:54,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:54,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120670707] [2024-06-04 14:34:54,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:54,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:55,753 INFO 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 14:34:55,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:55,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120670707] [2024-06-04 14:34:55,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120670707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:55,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:55,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:34:55,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158274050] [2024-06-04 14:34:55,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:55,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:34:55,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:55,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:34:55,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:34:55,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:34:55,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 307 transitions, 2865 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 14:34:55,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:55,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:34:55,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:56,543 INFO L124 PetriNetUnfolderBase]: 2389/3839 cut-off events. [2024-06-04 14:34:56,543 INFO L125 PetriNetUnfolderBase]: For 454244/454264 co-relation queries the response was YES. [2024-06-04 14:34:56,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34518 conditions, 3839 events. 2389/3839 cut-off events. For 454244/454264 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 21364 event pairs, 564 based on Foata normal form. 22/3847 useless extension candidates. Maximal degree in co-relation 34418. Up to 3360 conditions per place. [2024-06-04 14:34:56,585 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 264 selfloop transitions, 20 changer transitions 0/320 dead transitions. [2024-06-04 14:34:56,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 320 transitions, 3519 flow [2024-06-04 14:34:56,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:34:56,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:34:56,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-04 14:34:56,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4448051948051948 [2024-06-04 14:34:56,587 INFO L175 Difference]: Start difference. First operand has 214 places, 307 transitions, 2865 flow. Second operand 7 states and 137 transitions. [2024-06-04 14:34:56,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 320 transitions, 3519 flow [2024-06-04 14:34:57,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 320 transitions, 3449 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-04 14:34:57,190 INFO L231 Difference]: Finished difference. Result has 216 places, 310 transitions, 2903 flow [2024-06-04 14:34:57,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2795, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2903, PETRI_PLACES=216, PETRI_TRANSITIONS=310} [2024-06-04 14:34:57,191 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 171 predicate places. [2024-06-04 14:34:57,191 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 310 transitions, 2903 flow [2024-06-04 14:34:57,191 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 14:34:57,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:57,191 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 14:34:57,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-04 14:34:57,192 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:34:57,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:57,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1258722907, now seen corresponding path program 3 times [2024-06-04 14:34:57,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:57,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730487430] [2024-06-04 14:34:57,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:57,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:58,198 INFO 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 14:34:58,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:58,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730487430] [2024-06-04 14:34:58,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730487430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:58,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:58,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:34:58,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945377236] [2024-06-04 14:34:58,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:58,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:34:58,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:58,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:34:58,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:34:58,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:34:58,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 310 transitions, 2903 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 14:34:58,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:58,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:34:58,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:59,039 INFO L124 PetriNetUnfolderBase]: 2391/3844 cut-off events. [2024-06-04 14:34:59,039 INFO L125 PetriNetUnfolderBase]: For 463093/463113 co-relation queries the response was YES. [2024-06-04 14:34:59,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34929 conditions, 3844 events. 2391/3844 cut-off events. For 463093/463113 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 21380 event pairs, 568 based on Foata normal form. 19/3849 useless extension candidates. Maximal degree in co-relation 34828. Up to 3342 conditions per place. [2024-06-04 14:34:59,083 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 261 selfloop transitions, 27 changer transitions 0/324 dead transitions. [2024-06-04 14:34:59,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 324 transitions, 3591 flow [2024-06-04 14:34:59,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:34:59,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:34:59,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-04 14:34:59,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:34:59,084 INFO L175 Difference]: Start difference. First operand has 216 places, 310 transitions, 2903 flow. Second operand 7 states and 140 transitions. [2024-06-04 14:34:59,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 324 transitions, 3591 flow [2024-06-04 14:34:59,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 324 transitions, 3505 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-04 14:34:59,698 INFO L231 Difference]: Finished difference. Result has 218 places, 313 transitions, 2947 flow [2024-06-04 14:34:59,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2817, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2947, PETRI_PLACES=218, PETRI_TRANSITIONS=313} [2024-06-04 14:34:59,698 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 173 predicate places. [2024-06-04 14:34:59,698 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 313 transitions, 2947 flow [2024-06-04 14:34:59,699 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 14:34:59,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:59,699 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 14:34:59,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-04 14:34:59,699 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:34:59,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:59,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1264936494, now seen corresponding path program 3 times [2024-06-04 14:34:59,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:59,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654155505] [2024-06-04 14:34:59,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:59,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:00,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:00,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:00,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654155505] [2024-06-04 14:35:00,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654155505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:00,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:00,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:35:00,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060884134] [2024-06-04 14:35:00,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:00,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:35:00,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:00,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:35:00,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:35:00,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:35:00,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 313 transitions, 2947 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 14:35:00,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:00,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:35:00,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:01,745 INFO L124 PetriNetUnfolderBase]: 2378/3823 cut-off events. [2024-06-04 14:35:01,745 INFO L125 PetriNetUnfolderBase]: For 471879/471899 co-relation queries the response was YES. [2024-06-04 14:35:01,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35051 conditions, 3823 events. 2378/3823 cut-off events. For 471879/471899 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 21263 event pairs, 557 based on Foata normal form. 22/3831 useless extension candidates. Maximal degree in co-relation 34949. Up to 3326 conditions per place. [2024-06-04 14:35:01,790 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 261 selfloop transitions, 30 changer transitions 0/327 dead transitions. [2024-06-04 14:35:01,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 327 transitions, 3625 flow [2024-06-04 14:35:01,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:35:01,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:35:01,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-04 14:35:01,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512987012987013 [2024-06-04 14:35:01,791 INFO L175 Difference]: Start difference. First operand has 218 places, 313 transitions, 2947 flow. Second operand 7 states and 139 transitions. [2024-06-04 14:35:01,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 327 transitions, 3625 flow [2024-06-04 14:35:02,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 327 transitions, 3517 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-04 14:35:02,291 INFO L231 Difference]: Finished difference. Result has 220 places, 316 transitions, 2976 flow [2024-06-04 14:35:02,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2839, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2976, PETRI_PLACES=220, PETRI_TRANSITIONS=316} [2024-06-04 14:35:02,291 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 175 predicate places. [2024-06-04 14:35:02,291 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 316 transitions, 2976 flow [2024-06-04 14:35:02,292 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 14:35:02,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:02,292 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 14:35:02,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-04 14:35:02,292 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 14:35:02,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:02,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1695509951, now seen corresponding path program 1 times [2024-06-04 14:35:02,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:02,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097346276] [2024-06-04 14:35:02,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:02,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:03,527 INFO 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 14:35:03,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:03,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097346276] [2024-06-04 14:35:03,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097346276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:03,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:03,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:35:03,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935952787] [2024-06-04 14:35:03,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:03,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:35:03,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:03,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:35:03,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:35:03,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:35:03,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 316 transitions, 2976 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 14:35:03,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:03,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:35:03,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:04,823 INFO L124 PetriNetUnfolderBase]: 2727/4258 cut-off events. [2024-06-04 14:35:04,823 INFO L125 PetriNetUnfolderBase]: For 521879/521883 co-relation queries the response was YES. [2024-06-04 14:35:04,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38656 conditions, 4258 events. 2727/4258 cut-off events. For 521879/521883 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 23122 event pairs, 584 based on Foata normal form. 24/4279 useless extension candidates. Maximal degree in co-relation 38553. Up to 3763 conditions per place. [2024-06-04 14:35:04,870 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 298 selfloop transitions, 57 changer transitions 0/360 dead transitions. [2024-06-04 14:35:04,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 360 transitions, 3941 flow [2024-06-04 14:35:04,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:35:04,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:35:04,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-04 14:35:04,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2024-06-04 14:35:04,871 INFO L175 Difference]: Start difference. First operand has 220 places, 316 transitions, 2976 flow. Second operand 10 states and 196 transitions. [2024-06-04 14:35:04,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 360 transitions, 3941 flow [2024-06-04 14:35:05,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 360 transitions, 3828 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-04 14:35:05,352 INFO L231 Difference]: Finished difference. Result has 225 places, 317 transitions, 3036 flow [2024-06-04 14:35:05,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2863, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3036, PETRI_PLACES=225, PETRI_TRANSITIONS=317} [2024-06-04 14:35:05,352 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 180 predicate places. [2024-06-04 14:35:05,352 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 317 transitions, 3036 flow [2024-06-04 14:35:05,352 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 14:35:05,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:05,353 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 14:35:05,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-04 14:35:05,353 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 14:35:05,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:05,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1740136039, now seen corresponding path program 2 times [2024-06-04 14:35:05,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:05,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885446922] [2024-06-04 14:35:05,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:05,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:06,511 INFO 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 14:35:06,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:06,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885446922] [2024-06-04 14:35:06,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885446922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:06,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:06,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:35:06,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511576293] [2024-06-04 14:35:06,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:06,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:35:06,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:06,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:35:06,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:35:06,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:35:06,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 317 transitions, 3036 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 14:35:06,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:06,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:35:06,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:07,924 INFO L124 PetriNetUnfolderBase]: 2785/4366 cut-off events. [2024-06-04 14:35:07,924 INFO L125 PetriNetUnfolderBase]: For 536004/536008 co-relation queries the response was YES. [2024-06-04 14:35:07,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39688 conditions, 4366 events. 2785/4366 cut-off events. For 536004/536008 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 23979 event pairs, 584 based on Foata normal form. 20/4383 useless extension candidates. Maximal degree in co-relation 39584. Up to 3751 conditions per place. [2024-06-04 14:35:07,972 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 301 selfloop transitions, 59 changer transitions 0/365 dead transitions. [2024-06-04 14:35:07,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 365 transitions, 4045 flow [2024-06-04 14:35:07,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:35:07,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:35:07,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-04 14:35:07,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:35:07,974 INFO L175 Difference]: Start difference. First operand has 225 places, 317 transitions, 3036 flow. Second operand 10 states and 200 transitions. [2024-06-04 14:35:07,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 365 transitions, 4045 flow [2024-06-04 14:35:08,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 365 transitions, 3902 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-04 14:35:08,332 INFO L231 Difference]: Finished difference. Result has 227 places, 318 transitions, 3071 flow [2024-06-04 14:35:08,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2893, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3071, PETRI_PLACES=227, PETRI_TRANSITIONS=318} [2024-06-04 14:35:08,333 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 182 predicate places. [2024-06-04 14:35:08,333 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 318 transitions, 3071 flow [2024-06-04 14:35:08,333 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 14:35:08,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:08,333 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 14:35:08,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-04 14:35:08,333 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 14:35:08,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:08,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1828701799, now seen corresponding path program 3 times [2024-06-04 14:35:08,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:08,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690313041] [2024-06-04 14:35:08,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:08,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:09,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:09,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:09,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690313041] [2024-06-04 14:35:09,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690313041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:09,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:09,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:35:09,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183318023] [2024-06-04 14:35:09,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:09,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:35:09,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:09,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:35:09,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:35:09,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:35:09,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 318 transitions, 3071 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 14:35:09,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:09,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:35:09,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:10,845 INFO L124 PetriNetUnfolderBase]: 2843/4464 cut-off events. [2024-06-04 14:35:10,845 INFO L125 PetriNetUnfolderBase]: For 551453/551457 co-relation queries the response was YES. [2024-06-04 14:35:10,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40460 conditions, 4464 events. 2843/4464 cut-off events. For 551453/551457 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 24626 event pairs, 495 based on Foata normal form. 20/4481 useless extension candidates. Maximal degree in co-relation 40355. Up to 3683 conditions per place. [2024-06-04 14:35:10,900 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 303 selfloop transitions, 63 changer transitions 0/371 dead transitions. [2024-06-04 14:35:10,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 371 transitions, 4112 flow [2024-06-04 14:35:10,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:35:10,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:35:10,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2024-06-04 14:35:10,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45041322314049587 [2024-06-04 14:35:10,902 INFO L175 Difference]: Start difference. First operand has 227 places, 318 transitions, 3071 flow. Second operand 11 states and 218 transitions. [2024-06-04 14:35:10,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 371 transitions, 4112 flow [2024-06-04 14:35:11,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 371 transitions, 3956 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-04 14:35:11,446 INFO L231 Difference]: Finished difference. Result has 230 places, 319 transitions, 3103 flow [2024-06-04 14:35:11,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2915, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3103, PETRI_PLACES=230, PETRI_TRANSITIONS=319} [2024-06-04 14:35:11,447 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 185 predicate places. [2024-06-04 14:35:11,447 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 319 transitions, 3103 flow [2024-06-04 14:35:11,447 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 14:35:11,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:11,447 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 14:35:11,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-04 14:35:11,448 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 14:35:11,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:11,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1834038101, now seen corresponding path program 4 times [2024-06-04 14:35:11,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:11,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657401802] [2024-06-04 14:35:11,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:11,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:12,542 INFO 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 14:35:12,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:12,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657401802] [2024-06-04 14:35:12,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657401802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:12,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:12,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:35:12,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247594436] [2024-06-04 14:35:12,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:12,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:35:12,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:12,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:35:12,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:35:12,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:35:12,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 319 transitions, 3103 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 14:35:12,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:12,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:35:12,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:14,049 INFO L124 PetriNetUnfolderBase]: 2918/4591 cut-off events. [2024-06-04 14:35:14,049 INFO L125 PetriNetUnfolderBase]: For 578450/578455 co-relation queries the response was YES. [2024-06-04 14:35:14,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41506 conditions, 4591 events. 2918/4591 cut-off events. For 578450/578455 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 25610 event pairs, 609 based on Foata normal form. 22/4609 useless extension candidates. Maximal degree in co-relation 41400. Up to 3487 conditions per place. [2024-06-04 14:35:14,097 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 219 selfloop transitions, 141 changer transitions 0/365 dead transitions. [2024-06-04 14:35:14,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 365 transitions, 4115 flow [2024-06-04 14:35:14,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:35:14,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:35:14,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 208 transitions. [2024-06-04 14:35:14,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4727272727272727 [2024-06-04 14:35:14,099 INFO L175 Difference]: Start difference. First operand has 230 places, 319 transitions, 3103 flow. Second operand 10 states and 208 transitions. [2024-06-04 14:35:14,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 365 transitions, 4115 flow [2024-06-04 14:35:14,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 365 transitions, 3949 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-04 14:35:14,807 INFO L231 Difference]: Finished difference. Result has 231 places, 320 transitions, 3284 flow [2024-06-04 14:35:14,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2937, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3284, PETRI_PLACES=231, PETRI_TRANSITIONS=320} [2024-06-04 14:35:14,808 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 186 predicate places. [2024-06-04 14:35:14,808 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 320 transitions, 3284 flow [2024-06-04 14:35:14,808 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 14:35:14,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:14,808 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 14:35:14,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-04 14:35:14,808 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 14:35:14,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:14,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1833890231, now seen corresponding path program 5 times [2024-06-04 14:35:14,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:14,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219856560] [2024-06-04 14:35:14,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:14,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:15,931 INFO 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 14:35:15,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:15,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219856560] [2024-06-04 14:35:15,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219856560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:15,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:15,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:35:15,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375234030] [2024-06-04 14:35:15,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:15,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:35:15,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:15,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:35:15,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:35:16,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:35:16,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 320 transitions, 3284 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 14:35:16,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:16,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:35:16,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:17,458 INFO L124 PetriNetUnfolderBase]: 3087/4880 cut-off events. [2024-06-04 14:35:17,459 INFO L125 PetriNetUnfolderBase]: For 633643/633648 co-relation queries the response was YES. [2024-06-04 14:35:17,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45294 conditions, 4880 events. 3087/4880 cut-off events. For 633643/633648 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 27830 event pairs, 632 based on Foata normal form. 18/4894 useless extension candidates. Maximal degree in co-relation 45187. Up to 3490 conditions per place. [2024-06-04 14:35:17,513 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 223 selfloop transitions, 144 changer transitions 0/372 dead transitions. [2024-06-04 14:35:17,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 372 transitions, 4632 flow [2024-06-04 14:35:17,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:35:17,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:35:17,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 212 transitions. [2024-06-04 14:35:17,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4818181818181818 [2024-06-04 14:35:17,514 INFO L175 Difference]: Start difference. First operand has 231 places, 320 transitions, 3284 flow. Second operand 10 states and 212 transitions. [2024-06-04 14:35:17,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 372 transitions, 4632 flow [2024-06-04 14:35:18,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 372 transitions, 4315 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-04 14:35:18,195 INFO L231 Difference]: Finished difference. Result has 233 places, 322 transitions, 3379 flow [2024-06-04 14:35:18,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2967, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3379, PETRI_PLACES=233, PETRI_TRANSITIONS=322} [2024-06-04 14:35:18,195 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 188 predicate places. [2024-06-04 14:35:18,195 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 322 transitions, 3379 flow [2024-06-04 14:35:18,195 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 14:35:18,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:18,196 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 14:35:18,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-04 14:35:18,196 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:35:18,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:18,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1839400481, now seen corresponding path program 6 times [2024-06-04 14:35:18,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:18,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604761037] [2024-06-04 14:35:18,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:18,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:19,400 INFO 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 14:35:19,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:19,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604761037] [2024-06-04 14:35:19,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604761037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:19,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:19,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:35:19,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732995930] [2024-06-04 14:35:19,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:19,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:35:19,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:19,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:35:19,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:35:19,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:35:19,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 322 transitions, 3379 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 14:35:19,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:19,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:35:19,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:20,994 INFO L124 PetriNetUnfolderBase]: 3051/4824 cut-off events. [2024-06-04 14:35:20,994 INFO L125 PetriNetUnfolderBase]: For 616283/616288 co-relation queries the response was YES. [2024-06-04 14:35:21,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43602 conditions, 4824 events. 3051/4824 cut-off events. For 616283/616288 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 27439 event pairs, 634 based on Foata normal form. 22/4842 useless extension candidates. Maximal degree in co-relation 43494. Up to 3710 conditions per place. [2024-06-04 14:35:21,047 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 219 selfloop transitions, 142 changer transitions 0/366 dead transitions. [2024-06-04 14:35:21,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 366 transitions, 4327 flow [2024-06-04 14:35:21,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:35:21,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:35:21,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 206 transitions. [2024-06-04 14:35:21,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681818181818182 [2024-06-04 14:35:21,048 INFO L175 Difference]: Start difference. First operand has 233 places, 322 transitions, 3379 flow. Second operand 10 states and 206 transitions. [2024-06-04 14:35:21,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 366 transitions, 4327 flow [2024-06-04 14:35:21,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 366 transitions, 4069 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-04 14:35:21,626 INFO L231 Difference]: Finished difference. Result has 237 places, 322 transitions, 3412 flow [2024-06-04 14:35:21,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3121, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3412, PETRI_PLACES=237, PETRI_TRANSITIONS=322} [2024-06-04 14:35:21,627 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 192 predicate places. [2024-06-04 14:35:21,627 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 322 transitions, 3412 flow [2024-06-04 14:35:21,627 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 14:35:21,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:21,627 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 14:35:21,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-04 14:35:21,627 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:35:21,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:21,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1839615962, now seen corresponding path program 1 times [2024-06-04 14:35:21,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:21,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090307413] [2024-06-04 14:35:21,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:21,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:22,941 INFO 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 14:35:22,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:22,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090307413] [2024-06-04 14:35:22,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090307413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:22,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:22,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:35:22,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938333555] [2024-06-04 14:35:22,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:22,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:35:22,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:22,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:35:22,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:35:23,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:35:23,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 322 transitions, 3412 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 14:35:23,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:23,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:35:23,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:24,488 INFO L124 PetriNetUnfolderBase]: 3068/4837 cut-off events. [2024-06-04 14:35:24,488 INFO L125 PetriNetUnfolderBase]: For 593832/593839 co-relation queries the response was YES. [2024-06-04 14:35:24,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43743 conditions, 4837 events. 3068/4837 cut-off events. For 593832/593839 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 27344 event pairs, 639 based on Foata normal form. 8/4841 useless extension candidates. Maximal degree in co-relation 43633. Up to 4180 conditions per place. [2024-06-04 14:35:24,545 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 257 selfloop transitions, 104 changer transitions 0/366 dead transitions. [2024-06-04 14:35:24,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 366 transitions, 4395 flow [2024-06-04 14:35:24,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:35:24,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:35:24,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-04 14:35:24,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-04 14:35:24,547 INFO L175 Difference]: Start difference. First operand has 237 places, 322 transitions, 3412 flow. Second operand 10 states and 198 transitions. [2024-06-04 14:35:24,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 366 transitions, 4395 flow [2024-06-04 14:35:25,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 366 transitions, 4097 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-04 14:35:25,385 INFO L231 Difference]: Finished difference. Result has 239 places, 327 transitions, 3435 flow [2024-06-04 14:35:25,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3118, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3435, PETRI_PLACES=239, PETRI_TRANSITIONS=327} [2024-06-04 14:35:25,385 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 194 predicate places. [2024-06-04 14:35:25,385 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 327 transitions, 3435 flow [2024-06-04 14:35:25,386 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 14:35:25,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:25,386 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 14:35:25,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-04 14:35:25,386 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 14:35:25,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:25,387 INFO L85 PathProgramCache]: Analyzing trace with hash 930023671, now seen corresponding path program 1 times [2024-06-04 14:35:25,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:25,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347048487] [2024-06-04 14:35:25,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:25,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:26,339 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 14:35:26,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:26,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347048487] [2024-06-04 14:35:26,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347048487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:26,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:26,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:35:26,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402353023] [2024-06-04 14:35:26,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:26,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:35:26,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:26,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:35:26,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:35:26,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:35:26,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 327 transitions, 3435 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:26,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:26,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:35:26,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:27,448 INFO L124 PetriNetUnfolderBase]: 3080/4895 cut-off events. [2024-06-04 14:35:27,448 INFO L125 PetriNetUnfolderBase]: For 602546/602552 co-relation queries the response was YES. [2024-06-04 14:35:27,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44406 conditions, 4895 events. 3080/4895 cut-off events. For 602546/602552 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 28070 event pairs, 697 based on Foata normal form. 5/4893 useless extension candidates. Maximal degree in co-relation 44294. Up to 4561 conditions per place. [2024-06-04 14:35:27,499 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 308 selfloop transitions, 36 changer transitions 0/349 dead transitions. [2024-06-04 14:35:27,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 349 transitions, 4304 flow [2024-06-04 14:35:27,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:35:27,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:35:27,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-04 14:35:27,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 14:35:27,500 INFO L175 Difference]: Start difference. First operand has 239 places, 327 transitions, 3435 flow. Second operand 8 states and 144 transitions. [2024-06-04 14:35:27,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 349 transitions, 4304 flow [2024-06-04 14:35:28,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 349 transitions, 4027 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-04 14:35:28,204 INFO L231 Difference]: Finished difference. Result has 240 places, 333 transitions, 3364 flow [2024-06-04 14:35:28,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3162, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3364, PETRI_PLACES=240, PETRI_TRANSITIONS=333} [2024-06-04 14:35:28,205 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 195 predicate places. [2024-06-04 14:35:28,205 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 333 transitions, 3364 flow [2024-06-04 14:35:28,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:28,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:28,206 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 14:35:28,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-04 14:35:28,206 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 14:35:28,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:28,206 INFO L85 PathProgramCache]: Analyzing trace with hash -69065987, now seen corresponding path program 2 times [2024-06-04 14:35:28,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:28,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179618719] [2024-06-04 14:35:28,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:28,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:29,157 INFO 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 14:35:29,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:29,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179618719] [2024-06-04 14:35:29,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179618719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:29,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:29,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:35:29,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682062461] [2024-06-04 14:35:29,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:29,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:35:29,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:29,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:35:29,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:35:29,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:35:29,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 333 transitions, 3364 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:29,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:29,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:35:29,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:30,351 INFO L124 PetriNetUnfolderBase]: 3093/4897 cut-off events. [2024-06-04 14:35:30,352 INFO L125 PetriNetUnfolderBase]: For 622285/622290 co-relation queries the response was YES. [2024-06-04 14:35:30,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44745 conditions, 4897 events. 3093/4897 cut-off events. For 622285/622290 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 27940 event pairs, 681 based on Foata normal form. 5/4898 useless extension candidates. Maximal degree in co-relation 44632. Up to 4561 conditions per place. [2024-06-04 14:35:30,412 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 308 selfloop transitions, 42 changer transitions 0/355 dead transitions. [2024-06-04 14:35:30,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 355 transitions, 4440 flow [2024-06-04 14:35:30,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:35:30,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:35:30,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-04 14:35:30,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-04 14:35:30,414 INFO L175 Difference]: Start difference. First operand has 240 places, 333 transitions, 3364 flow. Second operand 7 states and 132 transitions. [2024-06-04 14:35:30,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 355 transitions, 4440 flow [2024-06-04 14:35:31,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 355 transitions, 4310 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-04 14:35:31,064 INFO L231 Difference]: Finished difference. Result has 242 places, 339 transitions, 3502 flow [2024-06-04 14:35:31,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3234, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3502, PETRI_PLACES=242, PETRI_TRANSITIONS=339} [2024-06-04 14:35:31,064 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 197 predicate places. [2024-06-04 14:35:31,065 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 339 transitions, 3502 flow [2024-06-04 14:35:31,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:31,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:31,065 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 14:35:31,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-04 14:35:31,065 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:35:31,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:31,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1615720957, now seen corresponding path program 7 times [2024-06-04 14:35:31,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:31,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011696727] [2024-06-04 14:35:31,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:31,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:32,183 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 14:35:32,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:32,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011696727] [2024-06-04 14:35:32,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011696727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:32,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:32,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:35:32,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369588169] [2024-06-04 14:35:32,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:32,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:35:32,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:32,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:35:32,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:35:32,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:35:32,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 339 transitions, 3502 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 14:35:32,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:32,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:35:32,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:33,746 INFO L124 PetriNetUnfolderBase]: 3168/5010 cut-off events. [2024-06-04 14:35:33,747 INFO L125 PetriNetUnfolderBase]: For 687755/687758 co-relation queries the response was YES. [2024-06-04 14:35:33,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46279 conditions, 5010 events. 3168/5010 cut-off events. For 687755/687758 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 28710 event pairs, 609 based on Foata normal form. 20/5026 useless extension candidates. Maximal degree in co-relation 46166. Up to 3889 conditions per place. [2024-06-04 14:35:33,803 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 243 selfloop transitions, 136 changer transitions 0/384 dead transitions. [2024-06-04 14:35:33,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 384 transitions, 4574 flow [2024-06-04 14:35:33,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:35:33,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:35:33,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 207 transitions. [2024-06-04 14:35:33,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47045454545454546 [2024-06-04 14:35:33,805 INFO L175 Difference]: Start difference. First operand has 242 places, 339 transitions, 3502 flow. Second operand 10 states and 207 transitions. [2024-06-04 14:35:33,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 384 transitions, 4574 flow [2024-06-04 14:35:34,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 384 transitions, 4448 flow, removed 46 selfloop flow, removed 3 redundant places. [2024-06-04 14:35:34,516 INFO L231 Difference]: Finished difference. Result has 249 places, 340 transitions, 3719 flow [2024-06-04 14:35:34,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3376, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3719, PETRI_PLACES=249, PETRI_TRANSITIONS=340} [2024-06-04 14:35:34,517 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 204 predicate places. [2024-06-04 14:35:34,517 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 340 transitions, 3719 flow [2024-06-04 14:35:34,517 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 14:35:34,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:34,517 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 14:35:34,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-04 14:35:34,517 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:35:34,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:34,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1461628515, now seen corresponding path program 8 times [2024-06-04 14:35:34,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:34,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355262702] [2024-06-04 14:35:34,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:34,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:35,625 INFO 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 14:35:35,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:35,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355262702] [2024-06-04 14:35:35,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355262702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:35,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:35,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:35:35,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460722019] [2024-06-04 14:35:35,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:35,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:35:35,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:35,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:35:35,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:35:35,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:35:35,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 340 transitions, 3719 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 14:35:35,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:35,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:35:35,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:37,233 INFO L124 PetriNetUnfolderBase]: 3243/5140 cut-off events. [2024-06-04 14:35:37,233 INFO L125 PetriNetUnfolderBase]: For 717989/717992 co-relation queries the response was YES. [2024-06-04 14:35:37,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48150 conditions, 5140 events. 3243/5140 cut-off events. For 717989/717992 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 29728 event pairs, 655 based on Foata normal form. 20/5156 useless extension candidates. Maximal degree in co-relation 48035. Up to 4014 conditions per place. [2024-06-04 14:35:37,291 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 243 selfloop transitions, 137 changer transitions 0/385 dead transitions. [2024-06-04 14:35:37,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 385 transitions, 4795 flow [2024-06-04 14:35:37,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:35:37,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:35:37,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 206 transitions. [2024-06-04 14:35:37,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681818181818182 [2024-06-04 14:35:37,293 INFO L175 Difference]: Start difference. First operand has 249 places, 340 transitions, 3719 flow. Second operand 10 states and 206 transitions. [2024-06-04 14:35:37,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 385 transitions, 4795 flow [2024-06-04 14:35:38,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 385 transitions, 4482 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-04 14:35:38,072 INFO L231 Difference]: Finished difference. Result has 251 places, 341 transitions, 3753 flow [2024-06-04 14:35:38,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3406, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3753, PETRI_PLACES=251, PETRI_TRANSITIONS=341} [2024-06-04 14:35:38,072 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 206 predicate places. [2024-06-04 14:35:38,072 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 341 transitions, 3753 flow [2024-06-04 14:35:38,073 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 14:35:38,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:38,073 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 14:35:38,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-04 14:35:38,073 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:35:38,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:38,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1660930305, now seen corresponding path program 9 times [2024-06-04 14:35:38,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:38,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449961742] [2024-06-04 14:35:38,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:38,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:39,176 INFO 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 14:35:39,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:39,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449961742] [2024-06-04 14:35:39,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449961742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:39,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:39,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:35:39,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105307423] [2024-06-04 14:35:39,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:39,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:35:39,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:39,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:35:39,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:35:39,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:35:39,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 341 transitions, 3753 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 14:35:39,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:39,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:35:39,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:40,835 INFO L124 PetriNetUnfolderBase]: 3318/5270 cut-off events. [2024-06-04 14:35:40,835 INFO L125 PetriNetUnfolderBase]: For 738170/738173 co-relation queries the response was YES. [2024-06-04 14:35:40,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49175 conditions, 5270 events. 3318/5270 cut-off events. For 738170/738173 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 30660 event pairs, 650 based on Foata normal form. 20/5286 useless extension candidates. Maximal degree in co-relation 49059. Up to 4139 conditions per place. [2024-06-04 14:35:40,896 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 238 selfloop transitions, 141 changer transitions 0/384 dead transitions. [2024-06-04 14:35:40,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 384 transitions, 4809 flow [2024-06-04 14:35:40,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:35:40,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:35:40,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 204 transitions. [2024-06-04 14:35:40,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636363636363636 [2024-06-04 14:35:40,897 INFO L175 Difference]: Start difference. First operand has 251 places, 341 transitions, 3753 flow. Second operand 10 states and 204 transitions. [2024-06-04 14:35:40,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 384 transitions, 4809 flow [2024-06-04 14:35:41,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 384 transitions, 4492 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-04 14:35:41,836 INFO L231 Difference]: Finished difference. Result has 253 places, 342 transitions, 3793 flow [2024-06-04 14:35:41,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3436, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3793, PETRI_PLACES=253, PETRI_TRANSITIONS=342} [2024-06-04 14:35:41,837 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 208 predicate places. [2024-06-04 14:35:41,837 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 342 transitions, 3793 flow [2024-06-04 14:35:41,838 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 14:35:41,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:41,838 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 14:35:41,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-04 14:35:41,838 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:35:41,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:41,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1461480645, now seen corresponding path program 10 times [2024-06-04 14:35:41,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:41,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556909353] [2024-06-04 14:35:41,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:41,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:42,943 INFO 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 14:35:42,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:42,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556909353] [2024-06-04 14:35:42,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556909353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:42,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:42,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:35:42,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498641151] [2024-06-04 14:35:42,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:42,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:35:42,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:42,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:35:42,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:35:43,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:35:43,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 342 transitions, 3793 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 14:35:43,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:43,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:35:43,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:44,781 INFO L124 PetriNetUnfolderBase]: 3376/5373 cut-off events. [2024-06-04 14:35:44,782 INFO L125 PetriNetUnfolderBase]: For 748348/748351 co-relation queries the response was YES. [2024-06-04 14:35:44,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49929 conditions, 5373 events. 3376/5373 cut-off events. For 748348/748351 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 31511 event pairs, 629 based on Foata normal form. 16/5385 useless extension candidates. Maximal degree in co-relation 49812. Up to 3887 conditions per place. [2024-06-04 14:35:44,847 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 244 selfloop transitions, 141 changer transitions 0/390 dead transitions. [2024-06-04 14:35:44,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 390 transitions, 4905 flow [2024-06-04 14:35:44,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:35:44,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:35:44,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 208 transitions. [2024-06-04 14:35:44,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4727272727272727 [2024-06-04 14:35:44,849 INFO L175 Difference]: Start difference. First operand has 253 places, 342 transitions, 3793 flow. Second operand 10 states and 208 transitions. [2024-06-04 14:35:44,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 390 transitions, 4905 flow [2024-06-04 14:35:45,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 390 transitions, 4578 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-04 14:35:45,682 INFO L231 Difference]: Finished difference. Result has 255 places, 343 transitions, 3824 flow [2024-06-04 14:35:45,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3466, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3824, PETRI_PLACES=255, PETRI_TRANSITIONS=343} [2024-06-04 14:35:45,682 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 210 predicate places. [2024-06-04 14:35:45,682 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 343 transitions, 3824 flow [2024-06-04 14:35:45,682 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 14:35:45,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:45,683 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 14:35:45,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-04 14:35:45,683 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 14:35:45,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:45,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1661145786, now seen corresponding path program 2 times [2024-06-04 14:35:45,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:45,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980666409] [2024-06-04 14:35:45,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:45,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:46,927 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 14:35:46,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:46,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980666409] [2024-06-04 14:35:46,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980666409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:46,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:46,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:35:46,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696213987] [2024-06-04 14:35:46,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:46,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:35:46,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:46,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:35:46,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:35:47,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:35:47,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 343 transitions, 3824 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 14:35:47,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:47,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:35:47,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:48,546 INFO L124 PetriNetUnfolderBase]: 3404/5415 cut-off events. [2024-06-04 14:35:48,546 INFO L125 PetriNetUnfolderBase]: For 734989/734996 co-relation queries the response was YES. [2024-06-04 14:35:48,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50116 conditions, 5415 events. 3404/5415 cut-off events. For 734989/734996 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 31771 event pairs, 713 based on Foata normal form. 8/5419 useless extension candidates. Maximal degree in co-relation 49998. Up to 4719 conditions per place. [2024-06-04 14:35:48,612 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 277 selfloop transitions, 104 changer transitions 0/386 dead transitions. [2024-06-04 14:35:48,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 386 transitions, 4870 flow [2024-06-04 14:35:48,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:35:48,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:35:48,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-04 14:35:48,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44772727272727275 [2024-06-04 14:35:48,613 INFO L175 Difference]: Start difference. First operand has 255 places, 343 transitions, 3824 flow. Second operand 10 states and 197 transitions. [2024-06-04 14:35:48,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 386 transitions, 4870 flow [2024-06-04 14:35:49,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 386 transitions, 4528 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-04 14:35:49,290 INFO L231 Difference]: Finished difference. Result has 258 places, 349 transitions, 3826 flow [2024-06-04 14:35:49,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3488, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3826, PETRI_PLACES=258, PETRI_TRANSITIONS=349} [2024-06-04 14:35:49,291 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 213 predicate places. [2024-06-04 14:35:49,291 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 349 transitions, 3826 flow [2024-06-04 14:35:49,291 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 14:35:49,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:49,291 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 14:35:49,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-04 14:35:49,291 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 14:35:49,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:49,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1467206376, now seen corresponding path program 3 times [2024-06-04 14:35:49,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:49,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784288114] [2024-06-04 14:35:49,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:49,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:50,598 INFO 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 14:35:50,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:50,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784288114] [2024-06-04 14:35:50,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784288114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:50,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:50,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:35:50,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287674479] [2024-06-04 14:35:50,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:50,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:35:50,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:50,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:35:50,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:35:50,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:35:50,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 349 transitions, 3826 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 14:35:50,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:50,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:35:50,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:52,215 INFO L124 PetriNetUnfolderBase]: 3421/5477 cut-off events. [2024-06-04 14:35:52,215 INFO L125 PetriNetUnfolderBase]: For 747548/747555 co-relation queries the response was YES. [2024-06-04 14:35:52,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50460 conditions, 5477 events. 3421/5477 cut-off events. For 747548/747555 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 32526 event pairs, 731 based on Foata normal form. 8/5481 useless extension candidates. Maximal degree in co-relation 50340. Up to 4746 conditions per place. [2024-06-04 14:35:52,282 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 283 selfloop transitions, 103 changer transitions 0/391 dead transitions. [2024-06-04 14:35:52,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 391 transitions, 4877 flow [2024-06-04 14:35:52,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:35:52,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:35:52,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-04 14:35:52,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-04 14:35:52,283 INFO L175 Difference]: Start difference. First operand has 258 places, 349 transitions, 3826 flow. Second operand 10 states and 198 transitions. [2024-06-04 14:35:52,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 391 transitions, 4877 flow [2024-06-04 14:35:53,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 391 transitions, 4586 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-04 14:35:53,062 INFO L231 Difference]: Finished difference. Result has 262 places, 354 transitions, 3874 flow [2024-06-04 14:35:53,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3539, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3874, PETRI_PLACES=262, PETRI_TRANSITIONS=354} [2024-06-04 14:35:53,062 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 217 predicate places. [2024-06-04 14:35:53,062 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 354 transitions, 3874 flow [2024-06-04 14:35:53,063 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 14:35:53,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:53,063 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 14:35:53,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-04 14:35:53,063 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 14:35:53,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:53,064 INFO L85 PathProgramCache]: Analyzing trace with hash 437348648, now seen corresponding path program 4 times [2024-06-04 14:35:53,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:53,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131710748] [2024-06-04 14:35:53,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:53,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:54,818 INFO 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 14:35:54,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:54,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131710748] [2024-06-04 14:35:54,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131710748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:54,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:54,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:35:54,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803854604] [2024-06-04 14:35:54,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:54,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:35:54,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:54,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:35:54,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:35:54,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:35:54,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 354 transitions, 3874 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 14:35:54,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:54,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:35:54,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:56,506 INFO L124 PetriNetUnfolderBase]: 3438/5484 cut-off events. [2024-06-04 14:35:56,506 INFO L125 PetriNetUnfolderBase]: For 768515/768522 co-relation queries the response was YES. [2024-06-04 14:35:56,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51219 conditions, 5484 events. 3438/5484 cut-off events. For 768515/768522 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 32409 event pairs, 718 based on Foata normal form. 8/5488 useless extension candidates. Maximal degree in co-relation 51097. Up to 4773 conditions per place. [2024-06-04 14:35:56,577 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 279 selfloop transitions, 110 changer transitions 0/394 dead transitions. [2024-06-04 14:35:56,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 394 transitions, 4917 flow [2024-06-04 14:35:56,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:35:56,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:35:56,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-04 14:35:56,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2024-06-04 14:35:56,578 INFO L175 Difference]: Start difference. First operand has 262 places, 354 transitions, 3874 flow. Second operand 10 states and 196 transitions. [2024-06-04 14:35:56,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 394 transitions, 4917 flow [2024-06-04 14:35:57,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 394 transitions, 4622 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-04 14:35:57,613 INFO L231 Difference]: Finished difference. Result has 265 places, 358 transitions, 3916 flow [2024-06-04 14:35:57,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3583, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3916, PETRI_PLACES=265, PETRI_TRANSITIONS=358} [2024-06-04 14:35:57,613 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 220 predicate places. [2024-06-04 14:35:57,613 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 358 transitions, 3916 flow [2024-06-04 14:35:57,613 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 14:35:57,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:57,613 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 14:35:57,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-04 14:35:57,613 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 14:35:57,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:57,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1414147456, now seen corresponding path program 5 times [2024-06-04 14:35:57,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:57,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059695758] [2024-06-04 14:35:57,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:57,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:59,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:59,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:59,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059695758] [2024-06-04 14:35:59,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059695758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:59,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:59,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:35:59,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333037921] [2024-06-04 14:35:59,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:59,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:35:59,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:59,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:35:59,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:35:59,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:35:59,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 358 transitions, 3916 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 14:35:59,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:59,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:35:59,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:00,696 INFO L124 PetriNetUnfolderBase]: 3455/5516 cut-off events. [2024-06-04 14:36:00,696 INFO L125 PetriNetUnfolderBase]: For 789657/789664 co-relation queries the response was YES. [2024-06-04 14:36:00,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51735 conditions, 5516 events. 3455/5516 cut-off events. For 789657/789664 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 32729 event pairs, 714 based on Foata normal form. 8/5520 useless extension candidates. Maximal degree in co-relation 51612. Up to 4705 conditions per place. [2024-06-04 14:36:00,765 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 273 selfloop transitions, 119 changer transitions 0/397 dead transitions. [2024-06-04 14:36:00,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 397 transitions, 4951 flow [2024-06-04 14:36:00,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:36:00,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:36:00,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-04 14:36:00,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44772727272727275 [2024-06-04 14:36:00,766 INFO L175 Difference]: Start difference. First operand has 265 places, 358 transitions, 3916 flow. Second operand 10 states and 197 transitions. [2024-06-04 14:36:00,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 397 transitions, 4951 flow [2024-06-04 14:36:01,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 397 transitions, 4676 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-04 14:36:01,575 INFO L231 Difference]: Finished difference. Result has 269 places, 360 transitions, 3980 flow [2024-06-04 14:36:01,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3641, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3980, PETRI_PLACES=269, PETRI_TRANSITIONS=360} [2024-06-04 14:36:01,576 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 224 predicate places. [2024-06-04 14:36:01,576 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 360 transitions, 3980 flow [2024-06-04 14:36:01,576 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 14:36:01,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:01,576 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 14:36:01,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-04 14:36:01,576 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:36:01,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:01,577 INFO L85 PathProgramCache]: Analyzing trace with hash 2127338144, now seen corresponding path program 1 times [2024-06-04 14:36:01,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:01,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271699559] [2024-06-04 14:36:01,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:01,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:02,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:02,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:02,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271699559] [2024-06-04 14:36:02,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271699559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:02,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:02,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:36:02,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216849821] [2024-06-04 14:36:02,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:02,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:36:02,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:02,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:36:02,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:36:02,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:36:02,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 360 transitions, 3980 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 14:36:02,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:02,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:36:02,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:03,861 INFO L124 PetriNetUnfolderBase]: 3103/5102 cut-off events. [2024-06-04 14:36:03,861 INFO L125 PetriNetUnfolderBase]: For 802377/802381 co-relation queries the response was YES. [2024-06-04 14:36:03,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49511 conditions, 5102 events. 3103/5102 cut-off events. For 802377/802381 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 31502 event pairs, 682 based on Foata normal form. 4/5044 useless extension candidates. Maximal degree in co-relation 49387. Up to 4357 conditions per place. [2024-06-04 14:36:03,925 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 249 selfloop transitions, 68 changer transitions 0/383 dead transitions. [2024-06-04 14:36:03,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 383 transitions, 4736 flow [2024-06-04 14:36:03,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:36:03,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:36:03,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-04 14:36:03,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2024-06-04 14:36:03,926 INFO L175 Difference]: Start difference. First operand has 269 places, 360 transitions, 3980 flow. Second operand 8 states and 162 transitions. [2024-06-04 14:36:03,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 383 transitions, 4736 flow [2024-06-04 14:36:04,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 383 transitions, 4415 flow, removed 43 selfloop flow, removed 8 redundant places. [2024-06-04 14:36:04,830 INFO L231 Difference]: Finished difference. Result has 269 places, 363 transitions, 3864 flow [2024-06-04 14:36:04,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3659, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3864, PETRI_PLACES=269, PETRI_TRANSITIONS=363} [2024-06-04 14:36:04,831 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 224 predicate places. [2024-06-04 14:36:04,831 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 363 transitions, 3864 flow [2024-06-04 14:36:04,831 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 14:36:04,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:04,831 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 14:36:04,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-04 14:36:04,831 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:36:04,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:04,832 INFO L85 PathProgramCache]: Analyzing trace with hash 615768479, now seen corresponding path program 1 times [2024-06-04 14:36:04,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:04,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471209634] [2024-06-04 14:36:04,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:04,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:06,285 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 14:36:06,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:06,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471209634] [2024-06-04 14:36:06,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471209634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:06,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:06,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:36:06,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676579319] [2024-06-04 14:36:06,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:06,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:36:06,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:06,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:36:06,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:36:06,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:36:06,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 363 transitions, 3864 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 14:36:06,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:06,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:36:06,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:07,454 INFO L124 PetriNetUnfolderBase]: 3101/5097 cut-off events. [2024-06-04 14:36:07,455 INFO L125 PetriNetUnfolderBase]: For 819618/819624 co-relation queries the response was YES. [2024-06-04 14:36:07,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49707 conditions, 5097 events. 3101/5097 cut-off events. For 819618/819624 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 31415 event pairs, 692 based on Foata normal form. 5/5035 useless extension candidates. Maximal degree in co-relation 49582. Up to 4458 conditions per place. [2024-06-04 14:36:07,524 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 290 selfloop transitions, 25 changer transitions 0/381 dead transitions. [2024-06-04 14:36:07,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 381 transitions, 4606 flow [2024-06-04 14:36:07,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:36:07,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:36:07,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-04 14:36:07,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-04 14:36:07,525 INFO L175 Difference]: Start difference. First operand has 269 places, 363 transitions, 3864 flow. Second operand 8 states and 156 transitions. [2024-06-04 14:36:07,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 381 transitions, 4606 flow [2024-06-04 14:36:08,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 381 transitions, 4433 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-04 14:36:08,726 INFO L231 Difference]: Finished difference. Result has 271 places, 366 transitions, 3815 flow [2024-06-04 14:36:08,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3691, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3815, PETRI_PLACES=271, PETRI_TRANSITIONS=366} [2024-06-04 14:36:08,727 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 226 predicate places. [2024-06-04 14:36:08,727 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 366 transitions, 3815 flow [2024-06-04 14:36:08,727 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 14:36:08,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:08,728 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 14:36:08,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-04 14:36:08,728 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:36:08,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:08,728 INFO L85 PathProgramCache]: Analyzing trace with hash 615768014, now seen corresponding path program 2 times [2024-06-04 14:36:08,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:08,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549762609] [2024-06-04 14:36:08,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:08,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:09,930 INFO 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 14:36:09,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:09,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549762609] [2024-06-04 14:36:09,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549762609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:09,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:09,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:36:09,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928007455] [2024-06-04 14:36:09,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:09,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:36:09,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:09,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:36:09,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:36:10,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:36:10,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 366 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 14:36:10,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:10,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:36:10,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:11,202 INFO L124 PetriNetUnfolderBase]: 3135/5135 cut-off events. [2024-06-04 14:36:11,202 INFO L125 PetriNetUnfolderBase]: For 842410/842424 co-relation queries the response was YES. [2024-06-04 14:36:11,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50583 conditions, 5135 events. 3135/5135 cut-off events. For 842410/842424 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 31423 event pairs, 692 based on Foata normal form. 8/5071 useless extension candidates. Maximal degree in co-relation 50457. Up to 4358 conditions per place. [2024-06-04 14:36:11,292 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 244 selfloop transitions, 78 changer transitions 0/388 dead transitions. [2024-06-04 14:36:11,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 388 transitions, 4799 flow [2024-06-04 14:36:11,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:36:11,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:36:11,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-04 14:36:11,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:36:11,295 INFO L175 Difference]: Start difference. First operand has 271 places, 366 transitions, 3815 flow. Second operand 8 states and 160 transitions. [2024-06-04 14:36:11,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 388 transitions, 4799 flow [2024-06-04 14:36:12,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 388 transitions, 4697 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-04 14:36:12,559 INFO L231 Difference]: Finished difference. Result has 273 places, 372 transitions, 4001 flow [2024-06-04 14:36:12,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3713, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4001, PETRI_PLACES=273, PETRI_TRANSITIONS=372} [2024-06-04 14:36:12,559 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 228 predicate places. [2024-06-04 14:36:12,560 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 372 transitions, 4001 flow [2024-06-04 14:36:12,560 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 14:36:12,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:12,560 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 14:36:12,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-04 14:36:12,560 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:36:12,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:12,561 INFO L85 PathProgramCache]: Analyzing trace with hash 936685354, now seen corresponding path program 3 times [2024-06-04 14:36:12,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:12,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840192713] [2024-06-04 14:36:12,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:12,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:13,793 INFO 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 14:36:13,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:13,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840192713] [2024-06-04 14:36:13,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840192713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:13,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:13,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:36:13,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601024332] [2024-06-04 14:36:13,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:13,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:36:13,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:13,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:36:13,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:36:13,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:36:13,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 372 transitions, 4001 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 14:36:13,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:13,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:36:13,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:14,986 INFO L124 PetriNetUnfolderBase]: 3131/5128 cut-off events. [2024-06-04 14:36:14,986 INFO L125 PetriNetUnfolderBase]: For 856383/856397 co-relation queries the response was YES. [2024-06-04 14:36:15,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51072 conditions, 5128 events. 3131/5128 cut-off events. For 856383/856397 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 31333 event pairs, 691 based on Foata normal form. 7/5064 useless extension candidates. Maximal degree in co-relation 50945. Up to 4387 conditions per place. [2024-06-04 14:36:15,056 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 251 selfloop transitions, 70 changer transitions 0/387 dead transitions. [2024-06-04 14:36:15,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 387 transitions, 4693 flow [2024-06-04 14:36:15,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:36:15,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:36:15,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-04 14:36:15,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-06-04 14:36:15,057 INFO L175 Difference]: Start difference. First operand has 273 places, 372 transitions, 4001 flow. Second operand 8 states and 158 transitions. [2024-06-04 14:36:15,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 387 transitions, 4693 flow [2024-06-04 14:36:16,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 387 transitions, 4515 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-06-04 14:36:16,193 INFO L231 Difference]: Finished difference. Result has 277 places, 372 transitions, 3969 flow [2024-06-04 14:36:16,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3823, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3969, PETRI_PLACES=277, PETRI_TRANSITIONS=372} [2024-06-04 14:36:16,193 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 232 predicate places. [2024-06-04 14:36:16,193 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 372 transitions, 3969 flow [2024-06-04 14:36:16,194 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 14:36:16,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:16,194 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 14:36:16,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-04 14:36:16,194 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:36:16,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:16,194 INFO L85 PathProgramCache]: Analyzing trace with hash 781583201, now seen corresponding path program 3 times [2024-06-04 14:36:16,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:16,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137569522] [2024-06-04 14:36:16,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:16,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:17,017 INFO 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 14:36:17,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:17,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137569522] [2024-06-04 14:36:17,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137569522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:17,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:17,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:36:17,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193015066] [2024-06-04 14:36:17,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:17,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:36:17,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:17,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:36:17,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:36:17,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:36:17,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 372 transitions, 3969 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:17,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:17,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:36:17,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:18,267 INFO L124 PetriNetUnfolderBase]: 3495/5569 cut-off events. [2024-06-04 14:36:18,267 INFO L125 PetriNetUnfolderBase]: For 863013/863019 co-relation queries the response was YES. [2024-06-04 14:36:18,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54023 conditions, 5569 events. 3495/5569 cut-off events. For 863013/863019 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 32864 event pairs, 738 based on Foata normal form. 5/5567 useless extension candidates. Maximal degree in co-relation 53894. Up to 5232 conditions per place. [2024-06-04 14:36:18,337 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 351 selfloop transitions, 35 changer transitions 0/391 dead transitions. [2024-06-04 14:36:18,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 391 transitions, 4885 flow [2024-06-04 14:36:18,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:36:18,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:36:18,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-04 14:36:18,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42207792207792205 [2024-06-04 14:36:18,338 INFO L175 Difference]: Start difference. First operand has 277 places, 372 transitions, 3969 flow. Second operand 7 states and 130 transitions. [2024-06-04 14:36:18,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 391 transitions, 4885 flow [2024-06-04 14:36:19,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 391 transitions, 4718 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-04 14:36:19,434 INFO L231 Difference]: Finished difference. Result has 277 places, 375 transitions, 3965 flow [2024-06-04 14:36:19,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3802, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3965, PETRI_PLACES=277, PETRI_TRANSITIONS=375} [2024-06-04 14:36:19,435 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 232 predicate places. [2024-06-04 14:36:19,435 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 375 transitions, 3965 flow [2024-06-04 14:36:19,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:19,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:19,436 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 14:36:19,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-04 14:36:19,436 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:36:19,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:19,437 INFO L85 PathProgramCache]: Analyzing trace with hash 137795773, now seen corresponding path program 4 times [2024-06-04 14:36:19,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:19,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198873666] [2024-06-04 14:36:19,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:19,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:20,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:20,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:20,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198873666] [2024-06-04 14:36:20,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198873666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:20,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:20,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:36:20,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251010361] [2024-06-04 14:36:20,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:20,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:36:20,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:20,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:36:20,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:36:20,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:36:20,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 375 transitions, 3965 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:20,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:20,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:36:20,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:21,763 INFO L124 PetriNetUnfolderBase]: 3500/5575 cut-off events. [2024-06-04 14:36:21,764 INFO L125 PetriNetUnfolderBase]: For 881375/881381 co-relation queries the response was YES. [2024-06-04 14:36:21,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54196 conditions, 5575 events. 3500/5575 cut-off events. For 881375/881381 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 32868 event pairs, 738 based on Foata normal form. 5/5573 useless extension candidates. Maximal degree in co-relation 54066. Up to 5224 conditions per place. [2024-06-04 14:36:21,826 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 341 selfloop transitions, 46 changer transitions 0/392 dead transitions. [2024-06-04 14:36:21,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 392 transitions, 5059 flow [2024-06-04 14:36:21,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:36:21,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:36:21,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-04 14:36:21,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41883116883116883 [2024-06-04 14:36:21,827 INFO L175 Difference]: Start difference. First operand has 277 places, 375 transitions, 3965 flow. Second operand 7 states and 129 transitions. [2024-06-04 14:36:21,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 392 transitions, 5059 flow [2024-06-04 14:36:22,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 392 transitions, 4926 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-04 14:36:22,779 INFO L231 Difference]: Finished difference. Result has 279 places, 378 transitions, 4030 flow [2024-06-04 14:36:22,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3832, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4030, PETRI_PLACES=279, PETRI_TRANSITIONS=378} [2024-06-04 14:36:22,780 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 234 predicate places. [2024-06-04 14:36:22,780 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 378 transitions, 4030 flow [2024-06-04 14:36:22,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:22,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:22,780 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 14:36:22,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-04 14:36:22,780 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:36:22,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:22,780 INFO L85 PathProgramCache]: Analyzing trace with hash 550037183, now seen corresponding path program 5 times [2024-06-04 14:36:22,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:22,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199532213] [2024-06-04 14:36:22,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:22,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:23,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:23,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:23,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199532213] [2024-06-04 14:36:23,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199532213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:23,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:23,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:36:23,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780554957] [2024-06-04 14:36:23,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:23,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:36:23,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:23,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:36:23,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:36:23,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:36:23,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 378 transitions, 4030 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:23,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:23,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:36:23,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:25,082 INFO L124 PetriNetUnfolderBase]: 3505/5585 cut-off events. [2024-06-04 14:36:25,082 INFO L125 PetriNetUnfolderBase]: For 900777/900786 co-relation queries the response was YES. [2024-06-04 14:36:25,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54776 conditions, 5585 events. 3505/5585 cut-off events. For 900777/900786 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 32974 event pairs, 752 based on Foata normal form. 7/5580 useless extension candidates. Maximal degree in co-relation 54645. Up to 5205 conditions per place. [2024-06-04 14:36:25,156 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 328 selfloop transitions, 63 changer transitions 0/396 dead transitions. [2024-06-04 14:36:25,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 396 transitions, 5404 flow [2024-06-04 14:36:25,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:36:25,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:36:25,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-04 14:36:25,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-04 14:36:25,157 INFO L175 Difference]: Start difference. First operand has 279 places, 378 transitions, 4030 flow. Second operand 8 states and 141 transitions. [2024-06-04 14:36:25,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 396 transitions, 5404 flow [2024-06-04 14:36:26,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 396 transitions, 5242 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-04 14:36:26,320 INFO L231 Difference]: Finished difference. Result has 283 places, 384 transitions, 4206 flow [2024-06-04 14:36:26,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3868, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4206, PETRI_PLACES=283, PETRI_TRANSITIONS=384} [2024-06-04 14:36:26,321 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 238 predicate places. [2024-06-04 14:36:26,321 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 384 transitions, 4206 flow [2024-06-04 14:36:26,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:26,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:26,321 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 14:36:26,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-04 14:36:26,322 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 14:36:26,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:26,322 INFO L85 PathProgramCache]: Analyzing trace with hash 359030683, now seen corresponding path program 6 times [2024-06-04 14:36:26,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:26,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83945674] [2024-06-04 14:36:26,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:26,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:27,364 INFO 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 14:36:27,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:27,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83945674] [2024-06-04 14:36:27,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83945674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:27,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:27,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:36:27,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418789581] [2024-06-04 14:36:27,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:27,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:36:27,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:27,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:36:27,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:36:27,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:36:27,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 384 transitions, 4206 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:27,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:27,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:36:27,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:28,489 INFO L124 PetriNetUnfolderBase]: 3502/5581 cut-off events. [2024-06-04 14:36:28,489 INFO L125 PetriNetUnfolderBase]: For 917817/917826 co-relation queries the response was YES. [2024-06-04 14:36:28,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55076 conditions, 5581 events. 3502/5581 cut-off events. For 917817/917826 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 32952 event pairs, 752 based on Foata normal form. 7/5576 useless extension candidates. Maximal degree in co-relation 54944. Up to 5202 conditions per place. [2024-06-04 14:36:28,566 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 329 selfloop transitions, 61 changer transitions 0/395 dead transitions. [2024-06-04 14:36:28,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 395 transitions, 5202 flow [2024-06-04 14:36:28,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:36:28,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:36:28,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-04 14:36:28,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4155844155844156 [2024-06-04 14:36:28,567 INFO L175 Difference]: Start difference. First operand has 283 places, 384 transitions, 4206 flow. Second operand 7 states and 128 transitions. [2024-06-04 14:36:28,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 395 transitions, 5202 flow [2024-06-04 14:36:29,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 395 transitions, 4954 flow, removed 92 selfloop flow, removed 4 redundant places. [2024-06-04 14:36:29,845 INFO L231 Difference]: Finished difference. Result has 286 places, 384 transitions, 4086 flow [2024-06-04 14:36:29,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3958, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4086, PETRI_PLACES=286, PETRI_TRANSITIONS=384} [2024-06-04 14:36:29,845 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 241 predicate places. [2024-06-04 14:36:29,845 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 384 transitions, 4086 flow [2024-06-04 14:36:29,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:29,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:29,846 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 14:36:29,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-04 14:36:29,846 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:36:29,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:29,846 INFO L85 PathProgramCache]: Analyzing trace with hash 768097283, now seen corresponding path program 11 times [2024-06-04 14:36:29,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:29,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46744074] [2024-06-04 14:36:29,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:29,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:29,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:30,949 INFO 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 14:36:30,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:30,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46744074] [2024-06-04 14:36:30,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46744074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:30,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:30,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:36:30,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857909424] [2024-06-04 14:36:30,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:30,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:36:30,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:30,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:36:30,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:36:31,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:36:31,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 384 transitions, 4086 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 14:36:31,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:31,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:36:31,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:32,721 INFO L124 PetriNetUnfolderBase]: 3577/5690 cut-off events. [2024-06-04 14:36:32,722 INFO L125 PetriNetUnfolderBase]: For 1000396/1000396 co-relation queries the response was YES. [2024-06-04 14:36:32,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56269 conditions, 5690 events. 3577/5690 cut-off events. For 1000396/1000396 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 33638 event pairs, 666 based on Foata normal form. 20/5691 useless extension candidates. Maximal degree in co-relation 56135. Up to 4543 conditions per place. [2024-06-04 14:36:32,800 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 267 selfloop transitions, 151 changer transitions 0/423 dead transitions. [2024-06-04 14:36:32,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 423 transitions, 5226 flow [2024-06-04 14:36:32,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:36:32,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:36:32,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-04 14:36:32,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45227272727272727 [2024-06-04 14:36:32,801 INFO L175 Difference]: Start difference. First operand has 286 places, 384 transitions, 4086 flow. Second operand 10 states and 199 transitions. [2024-06-04 14:36:32,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 423 transitions, 5226 flow [2024-06-04 14:36:34,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 423 transitions, 5054 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-04 14:36:34,129 INFO L231 Difference]: Finished difference. Result has 289 places, 385 transitions, 4303 flow [2024-06-04 14:36:34,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3914, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4303, PETRI_PLACES=289, PETRI_TRANSITIONS=385} [2024-06-04 14:36:34,129 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 244 predicate places. [2024-06-04 14:36:34,130 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 385 transitions, 4303 flow [2024-06-04 14:36:34,130 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 14:36:34,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:34,130 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 14:36:34,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-04 14:36:34,130 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:36:34,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:34,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1477144373, now seen corresponding path program 12 times [2024-06-04 14:36:34,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:34,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329951867] [2024-06-04 14:36:34,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:34,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:35,255 INFO 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 14:36:35,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:35,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329951867] [2024-06-04 14:36:35,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329951867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:35,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:35,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:36:35,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852930156] [2024-06-04 14:36:35,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:35,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:36:35,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:35,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:36:35,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:36:35,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:36:35,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 385 transitions, 4303 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 14:36:35,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:35,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:36:35,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:37,025 INFO L124 PetriNetUnfolderBase]: 3652/5812 cut-off events. [2024-06-04 14:36:37,025 INFO L125 PetriNetUnfolderBase]: For 1039308/1039308 co-relation queries the response was YES. [2024-06-04 14:36:37,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58230 conditions, 5812 events. 3652/5812 cut-off events. For 1039308/1039308 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 34566 event pairs, 667 based on Foata normal form. 20/5813 useless extension candidates. Maximal degree in co-relation 58096. Up to 4668 conditions per place. [2024-06-04 14:36:37,100 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 281 selfloop transitions, 141 changer transitions 0/427 dead transitions. [2024-06-04 14:36:37,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 427 transitions, 5485 flow [2024-06-04 14:36:37,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:36:37,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:36:37,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 202 transitions. [2024-06-04 14:36:37,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590909090909091 [2024-06-04 14:36:37,101 INFO L175 Difference]: Start difference. First operand has 289 places, 385 transitions, 4303 flow. Second operand 10 states and 202 transitions. [2024-06-04 14:36:37,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 427 transitions, 5485 flow [2024-06-04 14:36:38,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 427 transitions, 5126 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-04 14:36:38,326 INFO L231 Difference]: Finished difference. Result has 291 places, 386 transitions, 4315 flow [2024-06-04 14:36:38,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3944, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4315, PETRI_PLACES=291, PETRI_TRANSITIONS=386} [2024-06-04 14:36:38,327 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 246 predicate places. [2024-06-04 14:36:38,327 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 386 transitions, 4315 flow [2024-06-04 14:36:38,327 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 14:36:38,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:38,328 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 14:36:38,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-04 14:36:38,328 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:36:38,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:38,329 INFO L85 PathProgramCache]: Analyzing trace with hash -768610017, now seen corresponding path program 13 times [2024-06-04 14:36:38,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:38,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683566033] [2024-06-04 14:36:38,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:38,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:38,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:39,484 INFO 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 14:36:39,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:39,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683566033] [2024-06-04 14:36:39,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683566033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:39,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:39,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:36:39,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737840274] [2024-06-04 14:36:39,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:39,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:36:39,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:39,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:36:39,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:36:39,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:36:39,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 386 transitions, 4315 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 14:36:39,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:39,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:36:39,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:41,300 INFO L124 PetriNetUnfolderBase]: 3727/5937 cut-off events. [2024-06-04 14:36:41,301 INFO L125 PetriNetUnfolderBase]: For 1066401/1066401 co-relation queries the response was YES. [2024-06-04 14:36:41,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59233 conditions, 5937 events. 3727/5937 cut-off events. For 1066401/1066401 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 35598 event pairs, 720 based on Foata normal form. 20/5938 useless extension candidates. Maximal degree in co-relation 59098. Up to 4793 conditions per place. [2024-06-04 14:36:41,381 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 285 selfloop transitions, 138 changer transitions 0/428 dead transitions. [2024-06-04 14:36:41,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 428 transitions, 5509 flow [2024-06-04 14:36:41,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:36:41,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:36:41,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2024-06-04 14:36:41,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46136363636363636 [2024-06-04 14:36:41,382 INFO L175 Difference]: Start difference. First operand has 291 places, 386 transitions, 4315 flow. Second operand 10 states and 203 transitions. [2024-06-04 14:36:41,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 428 transitions, 5509 flow [2024-06-04 14:36:42,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 428 transitions, 5168 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-04 14:36:42,658 INFO L231 Difference]: Finished difference. Result has 293 places, 387 transitions, 4341 flow [2024-06-04 14:36:42,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3974, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4341, PETRI_PLACES=293, PETRI_TRANSITIONS=387} [2024-06-04 14:36:42,658 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 248 predicate places. [2024-06-04 14:36:42,658 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 387 transitions, 4341 flow [2024-06-04 14:36:42,658 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 14:36:42,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:42,659 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 14:36:42,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-04 14:36:42,659 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:36:42,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:42,659 INFO L85 PathProgramCache]: Analyzing trace with hash 298681143, now seen corresponding path program 14 times [2024-06-04 14:36:42,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:42,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435755865] [2024-06-04 14:36:42,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:42,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:43,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:43,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:43,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435755865] [2024-06-04 14:36:43,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435755865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:43,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:43,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:36:43,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707168242] [2024-06-04 14:36:43,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:43,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:36:43,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:43,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:36:43,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:36:43,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:36:43,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 387 transitions, 4341 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 14:36:43,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:43,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:36:43,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:45,644 INFO L124 PetriNetUnfolderBase]: 3802/6072 cut-off events. [2024-06-04 14:36:45,644 INFO L125 PetriNetUnfolderBase]: For 1092467/1092467 co-relation queries the response was YES. [2024-06-04 14:36:45,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60277 conditions, 6072 events. 3802/6072 cut-off events. For 1092467/1092467 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 36716 event pairs, 732 based on Foata normal form. 20/6073 useless extension candidates. Maximal degree in co-relation 60141. Up to 4918 conditions per place. [2024-06-04 14:36:45,728 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 281 selfloop transitions, 143 changer transitions 0/429 dead transitions. [2024-06-04 14:36:45,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 429 transitions, 5531 flow [2024-06-04 14:36:45,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:36:45,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:36:45,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 201 transitions. [2024-06-04 14:36:45,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45681818181818185 [2024-06-04 14:36:45,729 INFO L175 Difference]: Start difference. First operand has 293 places, 387 transitions, 4341 flow. Second operand 10 states and 201 transitions. [2024-06-04 14:36:45,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 429 transitions, 5531 flow [2024-06-04 14:36:46,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 429 transitions, 5194 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-04 14:36:46,969 INFO L231 Difference]: Finished difference. Result has 295 places, 388 transitions, 4383 flow [2024-06-04 14:36:46,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4004, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4383, PETRI_PLACES=295, PETRI_TRANSITIONS=388} [2024-06-04 14:36:46,969 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 250 predicate places. [2024-06-04 14:36:46,970 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 388 transitions, 4383 flow [2024-06-04 14:36:46,970 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 14:36:46,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:46,970 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 14:36:46,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-04 14:36:46,970 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:36:46,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:46,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1482654623, now seen corresponding path program 15 times [2024-06-04 14:36:46,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:46,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881677418] [2024-06-04 14:36:46,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:46,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:46,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:48,070 INFO 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 14:36:48,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:48,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881677418] [2024-06-04 14:36:48,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881677418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:48,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:48,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:36:48,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124119321] [2024-06-04 14:36:48,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:48,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:36:48,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:48,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:36:48,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:36:48,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:36:48,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 388 transitions, 4383 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 14:36:48,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:48,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:36:48,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:49,890 INFO L124 PetriNetUnfolderBase]: 3810/6087 cut-off events. [2024-06-04 14:36:49,890 INFO L125 PetriNetUnfolderBase]: For 1067991/1067991 co-relation queries the response was YES. [2024-06-04 14:36:49,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59502 conditions, 6087 events. 3810/6087 cut-off events. For 1067991/1067991 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 36713 event pairs, 719 based on Foata normal form. 16/6084 useless extension candidates. Maximal degree in co-relation 59365. Up to 4468 conditions per place. [2024-06-04 14:36:49,973 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 280 selfloop transitions, 148 changer transitions 0/433 dead transitions. [2024-06-04 14:36:49,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 433 transitions, 5605 flow [2024-06-04 14:36:49,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:36:49,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:36:49,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2024-06-04 14:36:49,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46136363636363636 [2024-06-04 14:36:49,974 INFO L175 Difference]: Start difference. First operand has 295 places, 388 transitions, 4383 flow. Second operand 10 states and 203 transitions. [2024-06-04 14:36:49,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 433 transitions, 5605 flow [2024-06-04 14:36:51,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 433 transitions, 5256 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-04 14:36:51,983 INFO L231 Difference]: Finished difference. Result has 297 places, 389 transitions, 4424 flow [2024-06-04 14:36:51,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4034, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4424, PETRI_PLACES=297, PETRI_TRANSITIONS=389} [2024-06-04 14:36:51,984 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 252 predicate places. [2024-06-04 14:36:51,984 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 389 transitions, 4424 flow [2024-06-04 14:36:51,984 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 14:36:51,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:51,984 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 14:36:51,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-04 14:36:51,984 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:36:51,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:51,984 INFO L85 PathProgramCache]: Analyzing trace with hash 656444744, now seen corresponding path program 6 times [2024-06-04 14:36:51,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:51,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543887181] [2024-06-04 14:36:51,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:51,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:53,272 INFO 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 14:36:53,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:53,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543887181] [2024-06-04 14:36:53,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543887181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:53,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:53,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:36:53,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965687690] [2024-06-04 14:36:53,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:53,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:36:53,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:53,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:36:53,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:36:53,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:36:53,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 389 transitions, 4424 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 14:36:53,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:53,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:36:53,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:55,092 INFO L124 PetriNetUnfolderBase]: 3863/6196 cut-off events. [2024-06-04 14:36:55,093 INFO L125 PetriNetUnfolderBase]: For 1057184/1057196 co-relation queries the response was YES. [2024-06-04 14:36:55,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60391 conditions, 6196 events. 3863/6196 cut-off events. For 1057184/1057196 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 37834 event pairs, 793 based on Foata normal form. 12/6195 useless extension candidates. Maximal degree in co-relation 60253. Up to 5417 conditions per place. [2024-06-04 14:36:55,183 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 304 selfloop transitions, 129 changer transitions 0/438 dead transitions. [2024-06-04 14:36:55,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 438 transitions, 6050 flow [2024-06-04 14:36:55,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:36:55,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:36:55,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-04 14:36:55,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-04 14:36:55,184 INFO L175 Difference]: Start difference. First operand has 297 places, 389 transitions, 4424 flow. Second operand 10 states and 195 transitions. [2024-06-04 14:36:55,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 438 transitions, 6050 flow [2024-06-04 14:36:57,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 438 transitions, 5664 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-04 14:36:57,378 INFO L231 Difference]: Finished difference. Result has 300 places, 403 transitions, 4653 flow [2024-06-04 14:36:57,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4056, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4653, PETRI_PLACES=300, PETRI_TRANSITIONS=403} [2024-06-04 14:36:57,379 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 255 predicate places. [2024-06-04 14:36:57,379 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 403 transitions, 4653 flow [2024-06-04 14:36:57,379 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 14:36:57,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:57,379 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 14:36:57,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-04 14:36:57,379 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:36:57,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:57,379 INFO L85 PathProgramCache]: Analyzing trace with hash 400864756, now seen corresponding path program 7 times [2024-06-04 14:36:57,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:57,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116680684] [2024-06-04 14:36:57,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:57,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:58,631 INFO 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 14:36:58,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:58,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116680684] [2024-06-04 14:36:58,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116680684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:58,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:58,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:36:58,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566175593] [2024-06-04 14:36:58,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:58,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:36:58,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:58,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:36:58,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:36:58,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:36:58,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 403 transitions, 4653 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 14:36:58,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:58,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:36:58,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:00,471 INFO L124 PetriNetUnfolderBase]: 3891/6244 cut-off events. [2024-06-04 14:37:00,471 INFO L125 PetriNetUnfolderBase]: For 1069700/1069712 co-relation queries the response was YES. [2024-06-04 14:37:00,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60860 conditions, 6244 events. 3891/6244 cut-off events. For 1069700/1069712 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 38212 event pairs, 808 based on Foata normal form. 12/6243 useless extension candidates. Maximal degree in co-relation 60720. Up to 5503 conditions per place. [2024-06-04 14:37:00,559 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 311 selfloop transitions, 125 changer transitions 0/441 dead transitions. [2024-06-04 14:37:00,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 441 transitions, 5808 flow [2024-06-04 14:37:00,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:37:00,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:37:00,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-04 14:37:00,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2024-06-04 14:37:00,561 INFO L175 Difference]: Start difference. First operand has 300 places, 403 transitions, 4653 flow. Second operand 10 states and 192 transitions. [2024-06-04 14:37:00,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 441 transitions, 5808 flow [2024-06-04 14:37:03,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 441 transitions, 5603 flow, removed 65 selfloop flow, removed 3 redundant places. [2024-06-04 14:37:03,009 INFO L231 Difference]: Finished difference. Result has 308 places, 409 transitions, 4877 flow [2024-06-04 14:37:03,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4448, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4877, PETRI_PLACES=308, PETRI_TRANSITIONS=409} [2024-06-04 14:37:03,010 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 263 predicate places. [2024-06-04 14:37:03,010 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 409 transitions, 4877 flow [2024-06-04 14:37:03,010 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 14:37:03,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:03,010 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 14:37:03,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-04 14:37:03,010 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:37:03,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:03,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1275580172, now seen corresponding path program 8 times [2024-06-04 14:37:03,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:03,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453687860] [2024-06-04 14:37:03,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:03,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:04,584 INFO 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 14:37:04,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:04,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453687860] [2024-06-04 14:37:04,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453687860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:04,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:04,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:37:04,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982127361] [2024-06-04 14:37:04,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:04,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:37:04,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:04,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:37:04,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:37:04,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:37:04,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 409 transitions, 4877 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 14:37:04,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:04,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:37:04,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:06,582 INFO L124 PetriNetUnfolderBase]: 3919/6272 cut-off events. [2024-06-04 14:37:06,582 INFO L125 PetriNetUnfolderBase]: For 1083101/1083113 co-relation queries the response was YES. [2024-06-04 14:37:06,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60281 conditions, 6272 events. 3919/6272 cut-off events. For 1083101/1083113 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 38299 event pairs, 793 based on Foata normal form. 12/6271 useless extension candidates. Maximal degree in co-relation 60138. Up to 5542 conditions per place. [2024-06-04 14:37:06,673 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 324 selfloop transitions, 118 changer transitions 0/447 dead transitions. [2024-06-04 14:37:06,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 447 transitions, 6043 flow [2024-06-04 14:37:06,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:37:06,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:37:06,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-04 14:37:06,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409090909090909 [2024-06-04 14:37:06,675 INFO L175 Difference]: Start difference. First operand has 308 places, 409 transitions, 4877 flow. Second operand 10 states and 194 transitions. [2024-06-04 14:37:06,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 447 transitions, 6043 flow [2024-06-04 14:37:08,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 447 transitions, 5674 flow, removed 59 selfloop flow, removed 7 redundant places. [2024-06-04 14:37:08,515 INFO L231 Difference]: Finished difference. Result has 311 places, 414 transitions, 4900 flow [2024-06-04 14:37:08,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4514, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4900, PETRI_PLACES=311, PETRI_TRANSITIONS=414} [2024-06-04 14:37:08,515 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 266 predicate places. [2024-06-04 14:37:08,515 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 414 transitions, 4900 flow [2024-06-04 14:37:08,516 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 14:37:08,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:08,516 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 14:37:08,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-04 14:37:08,516 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:37:08,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:08,517 INFO L85 PathProgramCache]: Analyzing trace with hash 656175974, now seen corresponding path program 9 times [2024-06-04 14:37:08,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:08,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762221551] [2024-06-04 14:37:08,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:08,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:09,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:09,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:09,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762221551] [2024-06-04 14:37:09,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762221551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:09,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:09,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:37:09,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103155043] [2024-06-04 14:37:09,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:09,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:37:09,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:09,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:37:09,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:37:10,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:37:10,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 414 transitions, 4900 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 14:37:10,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:10,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:37:10,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:11,986 INFO L124 PetriNetUnfolderBase]: 3911/6260 cut-off events. [2024-06-04 14:37:11,986 INFO L125 PetriNetUnfolderBase]: For 1087546/1087558 co-relation queries the response was YES. [2024-06-04 14:37:12,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59910 conditions, 6260 events. 3911/6260 cut-off events. For 1087546/1087558 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 38157 event pairs, 791 based on Foata normal form. 12/6259 useless extension candidates. Maximal degree in co-relation 59766. Up to 5530 conditions per place. [2024-06-04 14:37:12,075 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 308 selfloop transitions, 133 changer transitions 0/446 dead transitions. [2024-06-04 14:37:12,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 446 transitions, 5911 flow [2024-06-04 14:37:12,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:37:12,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:37:12,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-04 14:37:12,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340909090909091 [2024-06-04 14:37:12,077 INFO L175 Difference]: Start difference. First operand has 311 places, 414 transitions, 4900 flow. Second operand 10 states and 191 transitions. [2024-06-04 14:37:12,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 446 transitions, 5911 flow [2024-06-04 14:37:14,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 446 transitions, 5471 flow, removed 100 selfloop flow, removed 10 redundant places. [2024-06-04 14:37:14,421 INFO L231 Difference]: Finished difference. Result has 311 places, 414 transitions, 4733 flow [2024-06-04 14:37:14,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4460, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4733, PETRI_PLACES=311, PETRI_TRANSITIONS=414} [2024-06-04 14:37:14,421 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 266 predicate places. [2024-06-04 14:37:14,422 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 414 transitions, 4733 flow [2024-06-04 14:37:14,422 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 14:37:14,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:14,422 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 14:37:14,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-04 14:37:14,422 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:37:14,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:14,422 INFO L85 PathProgramCache]: Analyzing trace with hash -760975926, now seen corresponding path program 10 times [2024-06-04 14:37:14,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:14,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422969985] [2024-06-04 14:37:14,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:14,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:15,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:15,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:15,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422969985] [2024-06-04 14:37:15,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422969985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:15,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:15,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:37:15,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369648093] [2024-06-04 14:37:15,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:15,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:37:15,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:15,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:37:15,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:37:15,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:37:15,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 414 transitions, 4733 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 14:37:15,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:15,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:37:15,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:17,516 INFO L124 PetriNetUnfolderBase]: 3953/6336 cut-off events. [2024-06-04 14:37:17,516 INFO L125 PetriNetUnfolderBase]: For 1124860/1124872 co-relation queries the response was YES. [2024-06-04 14:37:17,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60842 conditions, 6336 events. 3953/6336 cut-off events. For 1124860/1124872 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 38817 event pairs, 798 based on Foata normal form. 12/6335 useless extension candidates. Maximal degree in co-relation 60702. Up to 5526 conditions per place. [2024-06-04 14:37:17,603 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 326 selfloop transitions, 123 changer transitions 0/454 dead transitions. [2024-06-04 14:37:17,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 454 transitions, 6342 flow [2024-06-04 14:37:17,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:37:17,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:37:17,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-04 14:37:17,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44772727272727275 [2024-06-04 14:37:17,604 INFO L175 Difference]: Start difference. First operand has 311 places, 414 transitions, 4733 flow. Second operand 10 states and 197 transitions. [2024-06-04 14:37:17,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 454 transitions, 6342 flow [2024-06-04 14:37:19,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 454 transitions, 6069 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-04 14:37:19,139 INFO L231 Difference]: Finished difference. Result has 312 places, 418 transitions, 4949 flow [2024-06-04 14:37:19,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4460, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4949, PETRI_PLACES=312, PETRI_TRANSITIONS=418} [2024-06-04 14:37:19,140 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 267 predicate places. [2024-06-04 14:37:19,140 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 418 transitions, 4949 flow [2024-06-04 14:37:19,140 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 14:37:19,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:19,140 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 14:37:19,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-04 14:37:19,141 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:37:19,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:19,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1282989482, now seen corresponding path program 11 times [2024-06-04 14:37:19,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:19,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196662107] [2024-06-04 14:37:19,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:19,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:20,358 INFO 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 14:37:20,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:20,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196662107] [2024-06-04 14:37:20,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196662107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:20,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:20,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:37:20,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079945836] [2024-06-04 14:37:20,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:20,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:37:20,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:20,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:37:20,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:37:20,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:37:20,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 418 transitions, 4949 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 14:37:20,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:20,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:37:20,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:22,190 INFO L124 PetriNetUnfolderBase]: 3970/6363 cut-off events. [2024-06-04 14:37:22,190 INFO L125 PetriNetUnfolderBase]: For 1153152/1153164 co-relation queries the response was YES. [2024-06-04 14:37:22,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61570 conditions, 6363 events. 3970/6363 cut-off events. For 1153152/1153164 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 39026 event pairs, 803 based on Foata normal form. 12/6362 useless extension candidates. Maximal degree in co-relation 61429. Up to 5623 conditions per place. [2024-06-04 14:37:22,278 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 331 selfloop transitions, 118 changer transitions 0/454 dead transitions. [2024-06-04 14:37:22,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 454 transitions, 6115 flow [2024-06-04 14:37:22,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:37:22,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:37:22,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-04 14:37:22,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-04 14:37:22,279 INFO L175 Difference]: Start difference. First operand has 312 places, 418 transitions, 4949 flow. Second operand 10 states and 195 transitions. [2024-06-04 14:37:22,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 454 transitions, 6115 flow [2024-06-04 14:37:24,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 454 transitions, 5817 flow, removed 80 selfloop flow, removed 6 redundant places. [2024-06-04 14:37:24,958 INFO L231 Difference]: Finished difference. Result has 317 places, 421 transitions, 5039 flow [2024-06-04 14:37:24,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4677, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5039, PETRI_PLACES=317, PETRI_TRANSITIONS=421} [2024-06-04 14:37:24,958 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 272 predicate places. [2024-06-04 14:37:24,958 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 421 transitions, 5039 flow [2024-06-04 14:37:24,958 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 14:37:24,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:24,959 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 14:37:24,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-04 14:37:24,959 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:37:24,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:24,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1476928892, now seen corresponding path program 12 times [2024-06-04 14:37:24,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:24,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540283280] [2024-06-04 14:37:24,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:24,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:26,208 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 14:37:26,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:26,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540283280] [2024-06-04 14:37:26,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540283280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:26,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:26,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:37:26,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882615126] [2024-06-04 14:37:26,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:26,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:37:26,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:26,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:37:26,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:37:26,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:37:26,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 421 transitions, 5039 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 14:37:26,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:26,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:37:26,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:28,093 INFO L124 PetriNetUnfolderBase]: 3962/6361 cut-off events. [2024-06-04 14:37:28,093 INFO L125 PetriNetUnfolderBase]: For 1152892/1152904 co-relation queries the response was YES. [2024-06-04 14:37:28,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61278 conditions, 6361 events. 3962/6361 cut-off events. For 1152892/1152904 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 39139 event pairs, 814 based on Foata normal form. 12/6360 useless extension candidates. Maximal degree in co-relation 61134. Up to 5611 conditions per place. [2024-06-04 14:37:28,181 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 329 selfloop transitions, 121 changer transitions 0/455 dead transitions. [2024-06-04 14:37:28,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 455 transitions, 6084 flow [2024-06-04 14:37:28,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:37:28,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:37:28,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-04 14:37:28,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43863636363636366 [2024-06-04 14:37:28,182 INFO L175 Difference]: Start difference. First operand has 317 places, 421 transitions, 5039 flow. Second operand 10 states and 193 transitions. [2024-06-04 14:37:28,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 455 transitions, 6084 flow [2024-06-04 14:37:30,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 455 transitions, 5681 flow, removed 86 selfloop flow, removed 7 redundant places. [2024-06-04 14:37:30,028 INFO L231 Difference]: Finished difference. Result has 320 places, 421 transitions, 4885 flow [2024-06-04 14:37:30,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4636, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4885, PETRI_PLACES=320, PETRI_TRANSITIONS=421} [2024-06-04 14:37:30,029 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 275 predicate places. [2024-06-04 14:37:30,029 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 421 transitions, 4885 flow [2024-06-04 14:37:30,029 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 14:37:30,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:30,029 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 14:37:30,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-04 14:37:30,029 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:37:30,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:30,029 INFO L85 PathProgramCache]: Analyzing trace with hash 2073658118, now seen corresponding path program 13 times [2024-06-04 14:37:30,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:30,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767824578] [2024-06-04 14:37:30,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:30,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:31,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:31,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:31,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767824578] [2024-06-04 14:37:31,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767824578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:31,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:31,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:37:31,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084306633] [2024-06-04 14:37:31,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:31,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:37:31,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:31,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:37:31,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:37:31,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:37:31,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 421 transitions, 4885 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 14:37:31,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:31,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:37:31,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:33,063 INFO L124 PetriNetUnfolderBase]: 3979/6398 cut-off events. [2024-06-04 14:37:33,064 INFO L125 PetriNetUnfolderBase]: For 1172582/1172594 co-relation queries the response was YES. [2024-06-04 14:37:33,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61486 conditions, 6398 events. 3979/6398 cut-off events. For 1172582/1172594 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 39569 event pairs, 741 based on Foata normal form. 12/6397 useless extension candidates. Maximal degree in co-relation 61341. Up to 5255 conditions per place. [2024-06-04 14:37:33,151 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 290 selfloop transitions, 166 changer transitions 0/461 dead transitions. [2024-06-04 14:37:33,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 461 transitions, 6522 flow [2024-06-04 14:37:33,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:37:33,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:37:33,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-04 14:37:33,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-04 14:37:33,153 INFO L175 Difference]: Start difference. First operand has 320 places, 421 transitions, 4885 flow. Second operand 10 states and 195 transitions. [2024-06-04 14:37:33,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 461 transitions, 6522 flow [2024-06-04 14:37:35,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 461 transitions, 6234 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-04 14:37:35,367 INFO L231 Difference]: Finished difference. Result has 319 places, 425 transitions, 5180 flow [2024-06-04 14:37:35,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4597, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5180, PETRI_PLACES=319, PETRI_TRANSITIONS=425} [2024-06-04 14:37:35,368 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 274 predicate places. [2024-06-04 14:37:35,368 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 425 transitions, 5180 flow [2024-06-04 14:37:35,368 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 14:37:35,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:35,377 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 14:37:35,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-04 14:37:35,377 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 14:37:35,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:35,377 INFO L85 PathProgramCache]: Analyzing trace with hash -2105764804, now seen corresponding path program 14 times [2024-06-04 14:37:35,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:35,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512792723] [2024-06-04 14:37:35,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:35,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:37,034 INFO 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 14:37:37,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:37,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512792723] [2024-06-04 14:37:37,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512792723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:37,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:37,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:37:37,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256017802] [2024-06-04 14:37:37,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:37,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:37:37,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:37,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:37:37,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:37:37,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:37:37,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 425 transitions, 5180 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 14:37:37,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:37,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:37:37,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:38,910 INFO L124 PetriNetUnfolderBase]: 3996/6405 cut-off events. [2024-06-04 14:37:38,910 INFO L125 PetriNetUnfolderBase]: For 1201274/1201286 co-relation queries the response was YES. [2024-06-04 14:37:38,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62399 conditions, 6405 events. 3996/6405 cut-off events. For 1201274/1201286 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 39381 event pairs, 811 based on Foata normal form. 12/6404 useless extension candidates. Maximal degree in co-relation 62255. Up to 5665 conditions per place. [2024-06-04 14:37:38,999 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 327 selfloop transitions, 127 changer transitions 0/459 dead transitions. [2024-06-04 14:37:39,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 459 transitions, 6341 flow [2024-06-04 14:37:39,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:37:39,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:37:39,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-04 14:37:39,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43863636363636366 [2024-06-04 14:37:39,001 INFO L175 Difference]: Start difference. First operand has 319 places, 425 transitions, 5180 flow. Second operand 10 states and 193 transitions. [2024-06-04 14:37:39,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 459 transitions, 6341 flow [2024-06-04 14:37:41,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 459 transitions, 6008 flow, removed 82 selfloop flow, removed 6 redundant places. [2024-06-04 14:37:41,579 INFO L231 Difference]: Finished difference. Result has 323 places, 427 transitions, 5236 flow [2024-06-04 14:37:41,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4867, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5236, PETRI_PLACES=323, PETRI_TRANSITIONS=427} [2024-06-04 14:37:41,580 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 278 predicate places. [2024-06-04 14:37:41,580 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 427 transitions, 5236 flow [2024-06-04 14:37:41,580 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 14:37:41,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:41,580 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 14:37:41,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-04 14:37:41,580 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 14:37:41,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:41,581 INFO L85 PathProgramCache]: Analyzing trace with hash -2105496034, now seen corresponding path program 15 times [2024-06-04 14:37:41,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:41,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011669842] [2024-06-04 14:37:41,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:41,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:41,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:43,064 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 14:37:43,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:43,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011669842] [2024-06-04 14:37:43,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011669842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:43,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:43,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:37:43,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330283824] [2024-06-04 14:37:43,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:43,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:37:43,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:43,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:37:43,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:37:43,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:37:43,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 427 transitions, 5236 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 14:37:43,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:43,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:37:43,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:44,983 INFO L124 PetriNetUnfolderBase]: 3988/6393 cut-off events. [2024-06-04 14:37:44,984 INFO L125 PetriNetUnfolderBase]: For 1196433/1196445 co-relation queries the response was YES. [2024-06-04 14:37:45,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61734 conditions, 6393 events. 3988/6393 cut-off events. For 1196433/1196445 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 39262 event pairs, 804 based on Foata normal form. 12/6392 useless extension candidates. Maximal degree in co-relation 61588. Up to 5594 conditions per place. [2024-06-04 14:37:45,068 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 323 selfloop transitions, 132 changer transitions 0/460 dead transitions. [2024-06-04 14:37:45,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 460 transitions, 6277 flow [2024-06-04 14:37:45,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:37:45,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:37:45,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-04 14:37:45,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409090909090909 [2024-06-04 14:37:45,069 INFO L175 Difference]: Start difference. First operand has 323 places, 427 transitions, 5236 flow. Second operand 10 states and 194 transitions. [2024-06-04 14:37:45,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 460 transitions, 6277 flow [2024-06-04 14:37:47,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 460 transitions, 5850 flow, removed 73 selfloop flow, removed 7 redundant places. [2024-06-04 14:37:47,857 INFO L231 Difference]: Finished difference. Result has 326 places, 427 transitions, 5080 flow [2024-06-04 14:37:47,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4809, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5080, PETRI_PLACES=326, PETRI_TRANSITIONS=427} [2024-06-04 14:37:47,857 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 281 predicate places. [2024-06-04 14:37:47,857 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 427 transitions, 5080 flow [2024-06-04 14:37:47,857 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 14:37:47,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:47,857 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 14:37:47,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-04 14:37:47,857 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:37:47,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:47,858 INFO L85 PathProgramCache]: Analyzing trace with hash 543379871, now seen corresponding path program 2 times [2024-06-04 14:37:47,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:47,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965043538] [2024-06-04 14:37:47,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:47,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:49,231 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 14:37:49,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:49,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965043538] [2024-06-04 14:37:49,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965043538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:49,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:49,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:37:49,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915923956] [2024-06-04 14:37:49,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:49,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:37:49,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:49,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:37:49,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:37:49,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:37:49,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 427 transitions, 5080 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 14:37:49,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:49,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:37:49,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:50,722 INFO L124 PetriNetUnfolderBase]: 3623/5998 cut-off events. [2024-06-04 14:37:50,722 INFO L125 PetriNetUnfolderBase]: For 1206906/1206918 co-relation queries the response was YES. [2024-06-04 14:37:50,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58892 conditions, 5998 events. 3623/5998 cut-off events. For 1206906/1206918 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 38657 event pairs, 792 based on Foata normal form. 5/5939 useless extension candidates. Maximal degree in co-relation 58745. Up to 5197 conditions per place. [2024-06-04 14:37:50,805 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 323 selfloop transitions, 31 changer transitions 0/440 dead transitions. [2024-06-04 14:37:50,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 440 transitions, 5890 flow [2024-06-04 14:37:50,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:37:50,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:37:50,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-04 14:37:50,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-06-04 14:37:50,806 INFO L175 Difference]: Start difference. First operand has 326 places, 427 transitions, 5080 flow. Second operand 9 states and 166 transitions. [2024-06-04 14:37:50,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 440 transitions, 5890 flow [2024-06-04 14:37:53,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 440 transitions, 5334 flow, removed 25 selfloop flow, removed 11 redundant places. [2024-06-04 14:37:53,442 INFO L231 Difference]: Finished difference. Result has 324 places, 430 transitions, 4670 flow [2024-06-04 14:37:53,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4524, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4670, PETRI_PLACES=324, PETRI_TRANSITIONS=430} [2024-06-04 14:37:53,442 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 279 predicate places. [2024-06-04 14:37:53,442 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 430 transitions, 4670 flow [2024-06-04 14:37:53,443 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 14:37:53,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:53,443 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 14:37:53,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-04 14:37:53,443 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:37:53,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:53,443 INFO L85 PathProgramCache]: Analyzing trace with hash 543379406, now seen corresponding path program 4 times [2024-06-04 14:37:53,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:53,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484671086] [2024-06-04 14:37:53,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:53,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:54,788 INFO 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 14:37:54,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:54,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484671086] [2024-06-04 14:37:54,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484671086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:54,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:54,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:37:54,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705356468] [2024-06-04 14:37:54,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:54,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:37:54,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:54,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:37:54,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:37:54,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:37:54,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 430 transitions, 4670 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 14:37:54,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:54,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:37:54,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:56,255 INFO L124 PetriNetUnfolderBase]: 3648/6027 cut-off events. [2024-06-04 14:37:56,255 INFO L125 PetriNetUnfolderBase]: For 1242239/1242261 co-relation queries the response was YES. [2024-06-04 14:37:56,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58624 conditions, 6027 events. 3648/6027 cut-off events. For 1242239/1242261 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 38726 event pairs, 797 based on Foata normal form. 10/5958 useless extension candidates. Maximal degree in co-relation 58478. Up to 5120 conditions per place. [2024-06-04 14:37:56,344 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 280 selfloop transitions, 81 changer transitions 0/447 dead transitions. [2024-06-04 14:37:56,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 447 transitions, 5772 flow [2024-06-04 14:37:56,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:37:56,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:37:56,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-04 14:37:56,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460227272727273 [2024-06-04 14:37:56,345 INFO L175 Difference]: Start difference. First operand has 324 places, 430 transitions, 4670 flow. Second operand 8 states and 157 transitions. [2024-06-04 14:37:56,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 447 transitions, 5772 flow [2024-06-04 14:37:59,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 447 transitions, 5648 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-04 14:37:59,214 INFO L231 Difference]: Finished difference. Result has 325 places, 436 transitions, 4856 flow [2024-06-04 14:37:59,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4546, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4856, PETRI_PLACES=325, PETRI_TRANSITIONS=436} [2024-06-04 14:37:59,220 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 280 predicate places. [2024-06-04 14:37:59,220 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 436 transitions, 4856 flow [2024-06-04 14:37:59,220 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 14:37:59,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:59,221 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 14:37:59,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-04 14:37:59,221 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 14:37:59,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:59,221 INFO L85 PathProgramCache]: Analyzing trace with hash 543366386, now seen corresponding path program 5 times [2024-06-04 14:37:59,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:59,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791140596] [2024-06-04 14:37:59,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:59,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:00,572 INFO 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 14:38:00,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:00,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791140596] [2024-06-04 14:38:00,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791140596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:00,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:00,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:38:00,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899147580] [2024-06-04 14:38:00,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:00,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:38:00,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:00,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:38:00,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:38:00,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:38:00,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 436 transitions, 4856 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 14:38:00,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:00,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:38:00,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:01,932 INFO L124 PetriNetUnfolderBase]: 3644/6020 cut-off events. [2024-06-04 14:38:01,932 INFO L125 PetriNetUnfolderBase]: For 1256925/1256947 co-relation queries the response was YES. [2024-06-04 14:38:01,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59077 conditions, 6020 events. 3644/6020 cut-off events. For 1256925/1256947 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 38650 event pairs, 796 based on Foata normal form. 9/5951 useless extension candidates. Maximal degree in co-relation 58930. Up to 5123 conditions per place. [2024-06-04 14:38:02,018 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 284 selfloop transitions, 76 changer transitions 0/446 dead transitions. [2024-06-04 14:38:02,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 446 transitions, 5606 flow [2024-06-04 14:38:02,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:38:02,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:38:02,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-04 14:38:02,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-04 14:38:02,019 INFO L175 Difference]: Start difference. First operand has 325 places, 436 transitions, 4856 flow. Second operand 8 states and 154 transitions. [2024-06-04 14:38:02,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 446 transitions, 5606 flow [2024-06-04 14:38:04,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 446 transitions, 5396 flow, removed 60 selfloop flow, removed 4 redundant places. [2024-06-04 14:38:04,391 INFO L231 Difference]: Finished difference. Result has 329 places, 436 transitions, 4804 flow [2024-06-04 14:38:04,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4646, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4804, PETRI_PLACES=329, PETRI_TRANSITIONS=436} [2024-06-04 14:38:04,392 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 284 predicate places. [2024-06-04 14:38:04,392 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 436 transitions, 4804 flow [2024-06-04 14:38:04,392 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 14:38:04,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:04,392 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 14:38:04,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-04 14:38:04,392 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 14:38:04,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:04,392 INFO L85 PathProgramCache]: Analyzing trace with hash 558112001, now seen corresponding path program 3 times [2024-06-04 14:38:04,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:04,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393431808] [2024-06-04 14:38:04,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:04,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:05,699 INFO 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 14:38:05,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:05,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393431808] [2024-06-04 14:38:05,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393431808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:05,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:05,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:38:05,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121420658] [2024-06-04 14:38:05,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:05,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:38:05,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:05,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:38:05,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:38:05,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:38:05,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 436 transitions, 4804 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 14:38:05,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:05,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:38:05,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:07,061 INFO L124 PetriNetUnfolderBase]: 3636/6026 cut-off events. [2024-06-04 14:38:07,061 INFO L125 PetriNetUnfolderBase]: For 1290170/1290186 co-relation queries the response was YES. [2024-06-04 14:38:07,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59514 conditions, 6026 events. 3636/6026 cut-off events. For 1290170/1290186 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 39013 event pairs, 789 based on Foata normal form. 6/5968 useless extension candidates. Maximal degree in co-relation 59365. Up to 5195 conditions per place. [2024-06-04 14:38:07,143 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 327 selfloop transitions, 47 changer transitions 0/460 dead transitions. [2024-06-04 14:38:07,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 460 transitions, 6288 flow [2024-06-04 14:38:07,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:38:07,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:38:07,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-04 14:38:07,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:38:07,144 INFO L175 Difference]: Start difference. First operand has 329 places, 436 transitions, 4804 flow. Second operand 8 states and 160 transitions. [2024-06-04 14:38:07,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 460 transitions, 6288 flow [2024-06-04 14:38:09,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 460 transitions, 6128 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-04 14:38:09,982 INFO L231 Difference]: Finished difference. Result has 330 places, 445 transitions, 5002 flow [2024-06-04 14:38:09,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4644, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5002, PETRI_PLACES=330, PETRI_TRANSITIONS=445} [2024-06-04 14:38:09,982 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 285 predicate places. [2024-06-04 14:38:09,983 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 445 transitions, 5002 flow [2024-06-04 14:38:09,983 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 14:38:09,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:09,983 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 14:38:09,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-04 14:38:09,983 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 14:38:09,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:09,984 INFO L85 PathProgramCache]: Analyzing trace with hash 558111536, now seen corresponding path program 6 times [2024-06-04 14:38:09,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:09,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604784826] [2024-06-04 14:38:09,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:09,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:11,338 INFO 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 14:38:11,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:11,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604784826] [2024-06-04 14:38:11,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604784826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:11,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:11,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:38:11,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79189019] [2024-06-04 14:38:11,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:11,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:38:11,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:11,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:38:11,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:38:11,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:38:11,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 445 transitions, 5002 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 14:38:11,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:11,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:38:11,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:12,758 INFO L124 PetriNetUnfolderBase]: 3635/6016 cut-off events. [2024-06-04 14:38:12,758 INFO L125 PetriNetUnfolderBase]: For 1302824/1302834 co-relation queries the response was YES. [2024-06-04 14:38:12,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59649 conditions, 6016 events. 3635/6016 cut-off events. For 1302824/1302834 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 38821 event pairs, 796 based on Foata normal form. 10/5948 useless extension candidates. Maximal degree in co-relation 59499. Up to 5091 conditions per place. [2024-06-04 14:38:12,846 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 273 selfloop transitions, 99 changer transitions 0/458 dead transitions. [2024-06-04 14:38:12,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 458 transitions, 5852 flow [2024-06-04 14:38:12,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:38:12,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:38:12,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-04 14:38:12,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-04 14:38:12,847 INFO L175 Difference]: Start difference. First operand has 330 places, 445 transitions, 5002 flow. Second operand 8 states and 156 transitions. [2024-06-04 14:38:12,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 458 transitions, 5852 flow [2024-06-04 14:38:15,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 458 transitions, 5735 flow, removed 45 selfloop flow, removed 3 redundant places. [2024-06-04 14:38:15,080 INFO L231 Difference]: Finished difference. Result has 335 places, 448 transitions, 5171 flow [2024-06-04 14:38:15,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4885, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5171, PETRI_PLACES=335, PETRI_TRANSITIONS=448} [2024-06-04 14:38:15,080 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 290 predicate places. [2024-06-04 14:38:15,081 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 448 transitions, 5171 flow [2024-06-04 14:38:15,081 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 14:38:15,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:15,081 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 14:38:15,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-04 14:38:15,081 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 14:38:15,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:15,081 INFO L85 PathProgramCache]: Analyzing trace with hash 558616991, now seen corresponding path program 4 times [2024-06-04 14:38:15,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:15,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831903019] [2024-06-04 14:38:15,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:15,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:16,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:16,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:16,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831903019] [2024-06-04 14:38:16,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831903019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:16,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:16,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:38:16,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332307449] [2024-06-04 14:38:16,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:16,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:38:16,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:16,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:38:16,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:38:16,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:38:16,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 448 transitions, 5171 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 14:38:16,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:16,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:38:16,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:17,898 INFO L124 PetriNetUnfolderBase]: 3618/5997 cut-off events. [2024-06-04 14:38:17,899 INFO L125 PetriNetUnfolderBase]: For 1312582/1312590 co-relation queries the response was YES. [2024-06-04 14:38:17,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59899 conditions, 5997 events. 3618/5997 cut-off events. For 1312582/1312590 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 38835 event pairs, 803 based on Foata normal form. 2/5935 useless extension candidates. Maximal degree in co-relation 59747. Up to 5242 conditions per place. [2024-06-04 14:38:17,984 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 356 selfloop transitions, 18 changer transitions 0/460 dead transitions. [2024-06-04 14:38:17,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 460 transitions, 5961 flow [2024-06-04 14:38:17,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:38:17,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:38:17,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-04 14:38:17,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:38:17,985 INFO L175 Difference]: Start difference. First operand has 335 places, 448 transitions, 5171 flow. Second operand 8 states and 152 transitions. [2024-06-04 14:38:17,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 460 transitions, 5961 flow [2024-06-04 14:38:20,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 460 transitions, 5643 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-06-04 14:38:20,715 INFO L231 Difference]: Finished difference. Result has 337 places, 448 transitions, 4895 flow [2024-06-04 14:38:20,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4853, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4895, PETRI_PLACES=337, PETRI_TRANSITIONS=448} [2024-06-04 14:38:20,716 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 292 predicate places. [2024-06-04 14:38:20,716 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 448 transitions, 4895 flow [2024-06-04 14:38:20,716 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 14:38:20,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:20,716 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 14:38:20,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-04 14:38:20,716 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 14:38:20,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:20,716 INFO L85 PathProgramCache]: Analyzing trace with hash -2090437983, now seen corresponding path program 7 times [2024-06-04 14:38:20,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:20,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270218106] [2024-06-04 14:38:20,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:20,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:21,540 INFO 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 14:38:21,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:21,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270218106] [2024-06-04 14:38:21,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270218106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:21,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:21,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:38:21,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558265583] [2024-06-04 14:38:21,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:21,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:38:21,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:21,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:38:21,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:38:21,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:38:21,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 448 transitions, 4895 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:21,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:21,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:38:21,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:23,061 INFO L124 PetriNetUnfolderBase]: 4028/6466 cut-off events. [2024-06-04 14:38:23,061 INFO L125 PetriNetUnfolderBase]: For 1315815/1315820 co-relation queries the response was YES. [2024-06-04 14:38:23,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62755 conditions, 6466 events. 4028/6466 cut-off events. For 1315815/1315820 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 40013 event pairs, 823 based on Foata normal form. 5/6467 useless extension candidates. Maximal degree in co-relation 62602. Up to 6095 conditions per place. [2024-06-04 14:38:23,152 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 427 selfloop transitions, 44 changer transitions 0/476 dead transitions. [2024-06-04 14:38:23,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 476 transitions, 5989 flow [2024-06-04 14:38:23,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:38:23,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:38:23,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-04 14:38:23,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:38:23,153 INFO L175 Difference]: Start difference. First operand has 337 places, 448 transitions, 4895 flow. Second operand 8 states and 152 transitions. [2024-06-04 14:38:23,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 476 transitions, 5989 flow [2024-06-04 14:38:26,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 476 transitions, 5857 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-04 14:38:26,395 INFO L231 Difference]: Finished difference. Result has 338 places, 455 transitions, 4962 flow [2024-06-04 14:38:26,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4763, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4962, PETRI_PLACES=338, PETRI_TRANSITIONS=455} [2024-06-04 14:38:26,395 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 293 predicate places. [2024-06-04 14:38:26,395 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 455 transitions, 4962 flow [2024-06-04 14:38:26,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:26,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:26,396 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 14:38:26,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-04 14:38:26,396 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 14:38:26,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:26,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1567208097, now seen corresponding path program 1 times [2024-06-04 14:38:26,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:26,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295315406] [2024-06-04 14:38:26,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:26,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:27,519 INFO 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 14:38:27,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:27,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295315406] [2024-06-04 14:38:27,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295315406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:27,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:27,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:38:27,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005779317] [2024-06-04 14:38:27,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:27,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:38:27,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:27,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:38:27,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:38:27,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:38:27,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 455 transitions, 4962 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 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 14:38:27,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:27,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:38:27,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:29,059 INFO L124 PetriNetUnfolderBase]: 3764/6164 cut-off events. [2024-06-04 14:38:29,059 INFO L125 PetriNetUnfolderBase]: For 1342895/1342921 co-relation queries the response was YES. [2024-06-04 14:38:29,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60841 conditions, 6164 events. 3764/6164 cut-off events. For 1342895/1342921 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 39116 event pairs, 782 based on Foata normal form. 27/6140 useless extension candidates. Maximal degree in co-relation 60687. Up to 5511 conditions per place. [2024-06-04 14:38:29,150 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 401 selfloop transitions, 19 changer transitions 0/477 dead transitions. [2024-06-04 14:38:29,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 477 transitions, 5952 flow [2024-06-04 14:38:29,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:38:29,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:38:29,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-04 14:38:29,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:38:29,151 INFO L175 Difference]: Start difference. First operand has 338 places, 455 transitions, 4962 flow. Second operand 8 states and 160 transitions. [2024-06-04 14:38:29,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 477 transitions, 5952 flow [2024-06-04 14:38:31,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 477 transitions, 5835 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 14:38:31,512 INFO L231 Difference]: Finished difference. Result has 340 places, 458 transitions, 4973 flow [2024-06-04 14:38:31,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4845, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4973, PETRI_PLACES=340, PETRI_TRANSITIONS=458} [2024-06-04 14:38:31,512 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 295 predicate places. [2024-06-04 14:38:31,512 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 458 transitions, 4973 flow [2024-06-04 14:38:31,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 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 14:38:31,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:31,512 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 14:38:31,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-04 14:38:31,513 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 14:38:31,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:31,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1565884677, now seen corresponding path program 1 times [2024-06-04 14:38:31,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:31,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208237554] [2024-06-04 14:38:31,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:31,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:32,904 INFO 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 14:38:32,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:32,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208237554] [2024-06-04 14:38:32,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208237554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:32,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:32,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:38:32,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865904902] [2024-06-04 14:38:32,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:32,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:38:32,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:32,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:38:32,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:38:33,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:38:33,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 458 transitions, 4973 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 14:38:33,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:33,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:38:33,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:34,406 INFO L124 PetriNetUnfolderBase]: 3778/6186 cut-off events. [2024-06-04 14:38:34,407 INFO L125 PetriNetUnfolderBase]: For 1391472/1391502 co-relation queries the response was YES. [2024-06-04 14:38:34,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61637 conditions, 6186 events. 3778/6186 cut-off events. For 1391472/1391502 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 39352 event pairs, 781 based on Foata normal form. 30/6164 useless extension candidates. Maximal degree in co-relation 61482. Up to 5531 conditions per place. [2024-06-04 14:38:34,495 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 402 selfloop transitions, 20 changer transitions 0/479 dead transitions. [2024-06-04 14:38:34,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 479 transitions, 5949 flow [2024-06-04 14:38:34,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:38:34,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:38:34,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-04 14:38:34,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:38:34,496 INFO L175 Difference]: Start difference. First operand has 340 places, 458 transitions, 4973 flow. Second operand 9 states and 171 transitions. [2024-06-04 14:38:34,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 479 transitions, 5949 flow [2024-06-04 14:38:37,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 479 transitions, 5809 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-04 14:38:37,639 INFO L231 Difference]: Finished difference. Result has 342 places, 462 transitions, 4954 flow [2024-06-04 14:38:37,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4833, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4954, PETRI_PLACES=342, PETRI_TRANSITIONS=462} [2024-06-04 14:38:37,639 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 297 predicate places. [2024-06-04 14:38:37,639 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 462 transitions, 4954 flow [2024-06-04 14:38:37,640 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 14:38:37,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:37,640 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 14:38:37,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-04 14:38:37,640 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 14:38:37,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:37,640 INFO L85 PathProgramCache]: Analyzing trace with hash -807424339, now seen corresponding path program 2 times [2024-06-04 14:38:37,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:37,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977022035] [2024-06-04 14:38:37,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:37,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:38,874 INFO 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 14:38:38,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:38,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977022035] [2024-06-04 14:38:38,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977022035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:38,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:38,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:38:38,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082859607] [2024-06-04 14:38:38,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:38,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:38:38,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:38,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:38:38,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:38:38,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:38:38,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 462 transitions, 4954 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 14:38:38,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:38,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:38:38,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:40,452 INFO L124 PetriNetUnfolderBase]: 3822/6252 cut-off events. [2024-06-04 14:38:40,452 INFO L125 PetriNetUnfolderBase]: For 1442590/1442620 co-relation queries the response was YES. [2024-06-04 14:38:40,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63622 conditions, 6252 events. 3822/6252 cut-off events. For 1442590/1442620 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 39689 event pairs, 782 based on Foata normal form. 28/6229 useless extension candidates. Maximal degree in co-relation 63467. Up to 5542 conditions per place. [2024-06-04 14:38:40,546 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 397 selfloop transitions, 32 changer transitions 0/486 dead transitions. [2024-06-04 14:38:40,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 486 transitions, 6246 flow [2024-06-04 14:38:40,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:38:40,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:38:40,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-04 14:38:40,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45738636363636365 [2024-06-04 14:38:40,547 INFO L175 Difference]: Start difference. First operand has 342 places, 462 transitions, 4954 flow. Second operand 8 states and 161 transitions. [2024-06-04 14:38:40,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 486 transitions, 6246 flow [2024-06-04 14:38:43,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 486 transitions, 6153 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-04 14:38:43,712 INFO L231 Difference]: Finished difference. Result has 344 places, 469 transitions, 5088 flow [2024-06-04 14:38:43,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4861, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5088, PETRI_PLACES=344, PETRI_TRANSITIONS=469} [2024-06-04 14:38:43,712 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 299 predicate places. [2024-06-04 14:38:43,712 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 469 transitions, 5088 flow [2024-06-04 14:38:43,712 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 14:38:43,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:43,712 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 14:38:43,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-04 14:38:43,713 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 14:38:43,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:43,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1561243047, now seen corresponding path program 3 times [2024-06-04 14:38:43,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:43,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063506494] [2024-06-04 14:38:43,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:43,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:44,898 INFO 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 14:38:44,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:44,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063506494] [2024-06-04 14:38:44,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063506494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:44,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:44,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:38:44,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321434512] [2024-06-04 14:38:44,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:44,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:38:44,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:44,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:38:44,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:38:45,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:38:45,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 469 transitions, 5088 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 14:38:45,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:45,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:38:45,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:46,395 INFO L124 PetriNetUnfolderBase]: 3820/6250 cut-off events. [2024-06-04 14:38:46,395 INFO L125 PetriNetUnfolderBase]: For 1472689/1472717 co-relation queries the response was YES. [2024-06-04 14:38:46,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64424 conditions, 6250 events. 3820/6250 cut-off events. For 1472689/1472717 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 39682 event pairs, 784 based on Foata normal form. 33/6230 useless extension candidates. Maximal degree in co-relation 64267. Up to 5574 conditions per place. [2024-06-04 14:38:46,486 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 408 selfloop transitions, 24 changer transitions 0/489 dead transitions. [2024-06-04 14:38:46,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 489 transitions, 6122 flow [2024-06-04 14:38:46,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:38:46,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:38:46,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-04 14:38:46,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45170454545454547 [2024-06-04 14:38:46,487 INFO L175 Difference]: Start difference. First operand has 344 places, 469 transitions, 5088 flow. Second operand 8 states and 159 transitions. [2024-06-04 14:38:46,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 489 transitions, 6122 flow [2024-06-04 14:38:49,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 489 transitions, 6025 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-06-04 14:38:49,342 INFO L231 Difference]: Finished difference. Result has 348 places, 473 transitions, 5144 flow [2024-06-04 14:38:49,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5005, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5144, PETRI_PLACES=348, PETRI_TRANSITIONS=473} [2024-06-04 14:38:49,343 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 303 predicate places. [2024-06-04 14:38:49,343 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 473 transitions, 5144 flow [2024-06-04 14:38:49,343 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 14:38:49,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:49,343 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 14:38:49,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-04 14:38:49,343 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 14:38:49,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:49,343 INFO L85 PathProgramCache]: Analyzing trace with hash -634940959, now seen corresponding path program 4 times [2024-06-04 14:38:49,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:49,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559435384] [2024-06-04 14:38:49,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:49,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:50,668 INFO 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 14:38:50,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:50,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559435384] [2024-06-04 14:38:50,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559435384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:50,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:50,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:38:50,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067567748] [2024-06-04 14:38:50,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:50,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:38:50,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:50,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:38:50,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:38:50,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:38:50,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 473 transitions, 5144 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 14:38:50,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:50,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:38:50,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:52,369 INFO L124 PetriNetUnfolderBase]: 3844/6287 cut-off events. [2024-06-04 14:38:52,369 INFO L125 PetriNetUnfolderBase]: For 1505017/1505052 co-relation queries the response was YES. [2024-06-04 14:38:52,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65075 conditions, 6287 events. 3844/6287 cut-off events. For 1505017/1505052 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 39987 event pairs, 794 based on Foata normal form. 33/6265 useless extension candidates. Maximal degree in co-relation 64916. Up to 5596 conditions per place. [2024-06-04 14:38:52,471 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 402 selfloop transitions, 31 changer transitions 0/490 dead transitions. [2024-06-04 14:38:52,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 490 transitions, 6164 flow [2024-06-04 14:38:52,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:38:52,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:38:52,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-04 14:38:52,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-06-04 14:38:52,473 INFO L175 Difference]: Start difference. First operand has 348 places, 473 transitions, 5144 flow. Second operand 8 states and 158 transitions. [2024-06-04 14:38:52,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 490 transitions, 6164 flow [2024-06-04 14:38:55,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 490 transitions, 6071 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-04 14:38:55,541 INFO L231 Difference]: Finished difference. Result has 350 places, 477 transitions, 5216 flow [2024-06-04 14:38:55,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5051, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5216, PETRI_PLACES=350, PETRI_TRANSITIONS=477} [2024-06-04 14:38:55,542 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 305 predicate places. [2024-06-04 14:38:55,542 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 477 transitions, 5216 flow [2024-06-04 14:38:55,542 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 14:38:55,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:55,542 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 14:38:55,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-04 14:38:55,542 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 14:38:55,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:55,543 INFO L85 PathProgramCache]: Analyzing trace with hash 550052807, now seen corresponding path program 5 times [2024-06-04 14:38:55,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:55,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732268898] [2024-06-04 14:38:55,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:55,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:57,104 INFO 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 14:38:57,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:57,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732268898] [2024-06-04 14:38:57,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732268898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:57,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:57,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:38:57,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951657596] [2024-06-04 14:38:57,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:57,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:38:57,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:57,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:38:57,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:38:57,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:38:57,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 477 transitions, 5216 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 14:38:57,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:57,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:38:57,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:58,679 INFO L124 PetriNetUnfolderBase]: 3848/6303 cut-off events. [2024-06-04 14:38:58,679 INFO L125 PetriNetUnfolderBase]: For 1496906/1496941 co-relation queries the response was YES. [2024-06-04 14:38:58,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65855 conditions, 6303 events. 3848/6303 cut-off events. For 1496906/1496941 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 40235 event pairs, 790 based on Foata normal form. 28/6277 useless extension candidates. Maximal degree in co-relation 65695. Up to 5602 conditions per place. [2024-06-04 14:38:58,785 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 406 selfloop transitions, 35 changer transitions 0/498 dead transitions. [2024-06-04 14:38:58,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 498 transitions, 6321 flow [2024-06-04 14:38:58,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:38:58,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:38:58,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-04 14:38:58,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45170454545454547 [2024-06-04 14:38:58,786 INFO L175 Difference]: Start difference. First operand has 350 places, 477 transitions, 5216 flow. Second operand 8 states and 159 transitions. [2024-06-04 14:38:58,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 498 transitions, 6321 flow [2024-06-04 14:39:02,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 498 transitions, 6125 flow, removed 68 selfloop flow, removed 6 redundant places. [2024-06-04 14:39:02,097 INFO L231 Difference]: Finished difference. Result has 353 places, 486 transitions, 5281 flow [2024-06-04 14:39:02,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5085, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5281, PETRI_PLACES=353, PETRI_TRANSITIONS=486} [2024-06-04 14:39:02,097 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 308 predicate places. [2024-06-04 14:39:02,097 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 486 transitions, 5281 flow [2024-06-04 14:39:02,097 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 14:39:02,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:02,097 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 14:39:02,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-04 14:39:02,097 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 14:39:02,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:02,098 INFO L85 PathProgramCache]: Analyzing trace with hash 558327017, now seen corresponding path program 6 times [2024-06-04 14:39:02,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:02,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522175761] [2024-06-04 14:39:02,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:02,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:03,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:03,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:03,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522175761] [2024-06-04 14:39:03,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522175761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:03,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:03,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:39:03,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867778237] [2024-06-04 14:39:03,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:03,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:39:03,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:03,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:39:03,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:39:03,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:39:03,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 486 transitions, 5281 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 14:39:03,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:03,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:39:03,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:05,151 INFO L124 PetriNetUnfolderBase]: 3847/6302 cut-off events. [2024-06-04 14:39:05,151 INFO L125 PetriNetUnfolderBase]: For 1515831/1515862 co-relation queries the response was YES. [2024-06-04 14:39:05,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66148 conditions, 6302 events. 3847/6302 cut-off events. For 1515831/1515862 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 40188 event pairs, 785 based on Foata normal form. 30/6278 useless extension candidates. Maximal degree in co-relation 65986. Up to 5519 conditions per place. [2024-06-04 14:39:05,239 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 383 selfloop transitions, 67 changer transitions 0/507 dead transitions. [2024-06-04 14:39:05,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 507 transitions, 6645 flow [2024-06-04 14:39:05,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:39:05,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:39:05,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-04 14:39:05,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2024-06-04 14:39:05,241 INFO L175 Difference]: Start difference. First operand has 353 places, 486 transitions, 5281 flow. Second operand 8 states and 162 transitions. [2024-06-04 14:39:05,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 507 transitions, 6645 flow [2024-06-04 14:39:08,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 507 transitions, 6546 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-04 14:39:08,200 INFO L231 Difference]: Finished difference. Result has 358 places, 492 transitions, 5520 flow [2024-06-04 14:39:08,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5182, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5520, PETRI_PLACES=358, PETRI_TRANSITIONS=492} [2024-06-04 14:39:08,200 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 313 predicate places. [2024-06-04 14:39:08,200 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 492 transitions, 5520 flow [2024-06-04 14:39:08,201 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 14:39:08,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:08,201 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 14:39:08,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-04 14:39:08,201 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:39:08,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:08,201 INFO L85 PathProgramCache]: Analyzing trace with hash 558634847, now seen corresponding path program 1 times [2024-06-04 14:39:08,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:08,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677415466] [2024-06-04 14:39:08,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:08,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:10,052 INFO 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 14:39:10,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:10,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677415466] [2024-06-04 14:39:10,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677415466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:10,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:10,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:39:10,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535759792] [2024-06-04 14:39:10,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:10,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:39:10,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:10,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:39:10,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:39:10,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-04 14:39:10,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 492 transitions, 5520 flow. Second operand has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:10,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:10,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-04 14:39:10,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:11,675 INFO L124 PetriNetUnfolderBase]: 3542/5921 cut-off events. [2024-06-04 14:39:11,675 INFO L125 PetriNetUnfolderBase]: For 1524518/1524560 co-relation queries the response was YES. [2024-06-04 14:39:11,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64587 conditions, 5921 events. 3542/5921 cut-off events. For 1524518/1524560 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 38797 event pairs, 766 based on Foata normal form. 33/5865 useless extension candidates. Maximal degree in co-relation 64422. Up to 5006 conditions per place. [2024-06-04 14:39:11,767 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 359 selfloop transitions, 20 changer transitions 0/509 dead transitions. [2024-06-04 14:39:11,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 509 transitions, 6427 flow [2024-06-04 14:39:11,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:39:11,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:39:11,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-04 14:39:11,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-04 14:39:11,768 INFO L175 Difference]: Start difference. First operand has 358 places, 492 transitions, 5520 flow. Second operand 9 states and 174 transitions. [2024-06-04 14:39:11,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 509 transitions, 6427 flow [2024-06-04 14:39:15,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 509 transitions, 6310 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-04 14:39:15,767 INFO L231 Difference]: Finished difference. Result has 364 places, 497 transitions, 5573 flow [2024-06-04 14:39:15,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5406, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5573, PETRI_PLACES=364, PETRI_TRANSITIONS=497} [2024-06-04 14:39:15,768 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 319 predicate places. [2024-06-04 14:39:15,768 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 497 transitions, 5573 flow [2024-06-04 14:39:15,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:15,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:15,768 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 14:39:15,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-04 14:39:15,769 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:39:15,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:15,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1901141327, now seen corresponding path program 1 times [2024-06-04 14:39:15,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:15,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511432001] [2024-06-04 14:39:15,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:15,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:16,698 INFO 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 14:39:16,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:16,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511432001] [2024-06-04 14:39:16,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511432001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:16,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:16,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:39:16,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035883505] [2024-06-04 14:39:16,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:16,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:39:16,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:16,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:39:16,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:39:16,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:39:16,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 497 transitions, 5573 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 14:39:16,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:16,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:39:16,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:18,424 INFO L124 PetriNetUnfolderBase]: 4145/6642 cut-off events. [2024-06-04 14:39:18,424 INFO L125 PetriNetUnfolderBase]: For 1524868/1524875 co-relation queries the response was YES. [2024-06-04 14:39:18,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69675 conditions, 6642 events. 4145/6642 cut-off events. For 1524868/1524875 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 41114 event pairs, 821 based on Foata normal form. 7/6645 useless extension candidates. Maximal degree in co-relation 69507. Up to 6140 conditions per place. [2024-06-04 14:39:18,530 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 442 selfloop transitions, 78 changer transitions 0/525 dead transitions. [2024-06-04 14:39:18,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 525 transitions, 6805 flow [2024-06-04 14:39:18,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:39:18,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:39:18,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-04 14:39:18,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-04 14:39:18,531 INFO L175 Difference]: Start difference. First operand has 364 places, 497 transitions, 5573 flow. Second operand 8 states and 154 transitions. [2024-06-04 14:39:18,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 525 transitions, 6805 flow [2024-06-04 14:39:21,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 525 transitions, 6684 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-04 14:39:21,571 INFO L231 Difference]: Finished difference. Result has 366 places, 500 transitions, 5712 flow [2024-06-04 14:39:21,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5452, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5712, PETRI_PLACES=366, PETRI_TRANSITIONS=500} [2024-06-04 14:39:21,572 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 321 predicate places. [2024-06-04 14:39:21,572 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 500 transitions, 5712 flow [2024-06-04 14:39:21,572 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 14:39:21,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:21,572 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 14:39:21,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-04 14:39:21,572 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:39:21,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:21,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1655007111, now seen corresponding path program 2 times [2024-06-04 14:39:21,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:21,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602769433] [2024-06-04 14:39:21,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:21,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:22,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:22,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:22,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602769433] [2024-06-04 14:39:22,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602769433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:22,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:22,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:39:22,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518165026] [2024-06-04 14:39:22,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:22,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:39:22,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:22,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:39:22,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:39:22,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:39:22,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 500 transitions, 5712 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 14:39:22,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:22,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:39:22,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:24,342 INFO L124 PetriNetUnfolderBase]: 4184/6704 cut-off events. [2024-06-04 14:39:24,343 INFO L125 PetriNetUnfolderBase]: For 1556628/1556640 co-relation queries the response was YES. [2024-06-04 14:39:24,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70986 conditions, 6704 events. 4184/6704 cut-off events. For 1556628/1556640 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 41571 event pairs, 841 based on Foata normal form. 9/6700 useless extension candidates. Maximal degree in co-relation 70817. Up to 6159 conditions per place. [2024-06-04 14:39:24,454 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 445 selfloop transitions, 95 changer transitions 0/545 dead transitions. [2024-06-04 14:39:24,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 545 transitions, 7601 flow [2024-06-04 14:39:24,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:39:24,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:39:24,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-04 14:39:24,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-04 14:39:24,456 INFO L175 Difference]: Start difference. First operand has 366 places, 500 transitions, 5712 flow. Second operand 9 states and 164 transitions. [2024-06-04 14:39:24,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 545 transitions, 7601 flow [2024-06-04 14:39:27,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 545 transitions, 7258 flow, removed 84 selfloop flow, removed 6 redundant places. [2024-06-04 14:39:28,000 INFO L231 Difference]: Finished difference. Result has 370 places, 527 transitions, 6121 flow [2024-06-04 14:39:28,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5478, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6121, PETRI_PLACES=370, PETRI_TRANSITIONS=527} [2024-06-04 14:39:28,001 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 325 predicate places. [2024-06-04 14:39:28,001 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 527 transitions, 6121 flow [2024-06-04 14:39:28,001 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 14:39:28,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:28,001 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 14:39:28,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-04 14:39:28,001 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 14:39:28,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:28,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1193521455, now seen corresponding path program 1 times [2024-06-04 14:39:28,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:28,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997760985] [2024-06-04 14:39:28,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:28,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:28,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:29,314 INFO 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 14:39:29,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:29,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997760985] [2024-06-04 14:39:29,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997760985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:29,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:29,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:39:29,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838286187] [2024-06-04 14:39:29,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:29,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:39:29,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:29,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:39:29,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:39:29,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:39:29,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 527 transitions, 6121 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 14:39:29,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:29,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:39:29,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:31,598 INFO L124 PetriNetUnfolderBase]: 4348/6980 cut-off events. [2024-06-04 14:39:31,598 INFO L125 PetriNetUnfolderBase]: For 1653881/1653886 co-relation queries the response was YES. [2024-06-04 14:39:31,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73442 conditions, 6980 events. 4348/6980 cut-off events. For 1653881/1653886 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 43755 event pairs, 786 based on Foata normal form. 14/6990 useless extension candidates. Maximal degree in co-relation 73271. Up to 5475 conditions per place. [2024-06-04 14:39:31,716 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 403 selfloop transitions, 177 changer transitions 0/585 dead transitions. [2024-06-04 14:39:31,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 585 transitions, 7762 flow [2024-06-04 14:39:31,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:39:31,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:39:31,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-06-04 14:39:31,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4607438016528926 [2024-06-04 14:39:31,718 INFO L175 Difference]: Start difference. First operand has 370 places, 527 transitions, 6121 flow. Second operand 11 states and 223 transitions. [2024-06-04 14:39:31,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 585 transitions, 7762 flow [2024-06-04 14:39:35,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 585 transitions, 7631 flow, removed 54 selfloop flow, removed 2 redundant places. [2024-06-04 14:39:35,081 INFO L231 Difference]: Finished difference. Result has 381 places, 538 transitions, 6606 flow [2024-06-04 14:39:35,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5990, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6606, PETRI_PLACES=381, PETRI_TRANSITIONS=538} [2024-06-04 14:39:35,081 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 336 predicate places. [2024-06-04 14:39:35,081 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 538 transitions, 6606 flow [2024-06-04 14:39:35,081 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 14:39:35,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:35,081 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 14:39:35,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-04 14:39:35,081 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:39:35,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:35,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1701875094, now seen corresponding path program 1 times [2024-06-04 14:39:35,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:35,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140085193] [2024-06-04 14:39:35,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:35,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:36,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:36,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:36,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140085193] [2024-06-04 14:39:36,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140085193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:36,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:36,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:39:36,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362725619] [2024-06-04 14:39:36,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:36,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:39:36,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:36,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:39:36,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:39:36,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:39:36,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 538 transitions, 6606 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 14:39:36,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:36,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:39:36,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:37,905 INFO L124 PetriNetUnfolderBase]: 4358/7027 cut-off events. [2024-06-04 14:39:37,905 INFO L125 PetriNetUnfolderBase]: For 1639344/1639349 co-relation queries the response was YES. [2024-06-04 14:39:37,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74941 conditions, 7027 events. 4358/7027 cut-off events. For 1639344/1639349 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 44387 event pairs, 819 based on Foata normal form. 4/7027 useless extension candidates. Maximal degree in co-relation 74765. Up to 6562 conditions per place. [2024-06-04 14:39:38,023 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 511 selfloop transitions, 48 changer transitions 0/564 dead transitions. [2024-06-04 14:39:38,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 564 transitions, 7936 flow [2024-06-04 14:39:38,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:39:38,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:39:38,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-04 14:39:38,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-04 14:39:38,024 INFO L175 Difference]: Start difference. First operand has 381 places, 538 transitions, 6606 flow. Second operand 8 states and 153 transitions. [2024-06-04 14:39:38,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 564 transitions, 7936 flow [2024-06-04 14:39:41,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 564 transitions, 7525 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-04 14:39:41,861 INFO L231 Difference]: Finished difference. Result has 383 places, 541 transitions, 6403 flow [2024-06-04 14:39:41,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6195, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6403, PETRI_PLACES=383, PETRI_TRANSITIONS=541} [2024-06-04 14:39:41,862 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 338 predicate places. [2024-06-04 14:39:41,862 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 541 transitions, 6403 flow [2024-06-04 14:39:41,862 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 14:39:41,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:41,862 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 14:39:41,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-04 14:39:41,862 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:39:41,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:41,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1701666557, now seen corresponding path program 3 times [2024-06-04 14:39:41,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:41,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253895317] [2024-06-04 14:39:41,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:41,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:42,824 INFO 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 14:39:42,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:42,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253895317] [2024-06-04 14:39:42,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253895317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:42,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:42,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:39:42,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351627477] [2024-06-04 14:39:42,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:42,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:39:42,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:42,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:39:42,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:39:42,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:39:42,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 541 transitions, 6403 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 14:39:42,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:42,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:39:42,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:45,093 INFO L124 PetriNetUnfolderBase]: 4368/7042 cut-off events. [2024-06-04 14:39:45,093 INFO L125 PetriNetUnfolderBase]: For 1653850/1653857 co-relation queries the response was YES. [2024-06-04 14:39:45,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74746 conditions, 7042 events. 4368/7042 cut-off events. For 1653850/1653857 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 44455 event pairs, 811 based on Foata normal form. 8/7046 useless extension candidates. Maximal degree in co-relation 74569. Up to 6498 conditions per place. [2024-06-04 14:39:45,195 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 477 selfloop transitions, 90 changer transitions 0/572 dead transitions. [2024-06-04 14:39:45,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 572 transitions, 7843 flow [2024-06-04 14:39:45,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:39:45,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:39:45,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-04 14:39:45,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:39:45,196 INFO L175 Difference]: Start difference. First operand has 383 places, 541 transitions, 6403 flow. Second operand 8 states and 152 transitions. [2024-06-04 14:39:45,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 572 transitions, 7843 flow [2024-06-04 14:39:48,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 572 transitions, 7687 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-04 14:39:48,946 INFO L231 Difference]: Finished difference. Result has 386 places, 547 transitions, 6642 flow [2024-06-04 14:39:48,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6247, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6642, PETRI_PLACES=386, PETRI_TRANSITIONS=547} [2024-06-04 14:39:48,946 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 341 predicate places. [2024-06-04 14:39:48,947 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 547 transitions, 6642 flow [2024-06-04 14:39:48,947 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 14:39:48,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:48,947 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 14:39:48,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-04 14:39:48,947 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 14:39:48,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:48,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1702024824, now seen corresponding path program 2 times [2024-06-04 14:39:48,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:48,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586901252] [2024-06-04 14:39:48,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:48,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:49,972 INFO 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 14:39:49,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:49,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586901252] [2024-06-04 14:39:49,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586901252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:49,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:49,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:39:49,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204290971] [2024-06-04 14:39:49,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:49,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:39:49,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:49,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:39:49,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:39:50,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:39:50,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 547 transitions, 6642 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 14:39:50,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:50,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:39:50,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:51,996 INFO L124 PetriNetUnfolderBase]: 4399/7080 cut-off events. [2024-06-04 14:39:51,996 INFO L125 PetriNetUnfolderBase]: For 1681944/1681950 co-relation queries the response was YES. [2024-06-04 14:39:52,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75633 conditions, 7080 events. 4399/7080 cut-off events. For 1681944/1681950 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 44702 event pairs, 817 based on Foata normal form. 4/7077 useless extension candidates. Maximal degree in co-relation 75455. Up to 6600 conditions per place. [2024-06-04 14:39:52,109 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 515 selfloop transitions, 56 changer transitions 0/576 dead transitions. [2024-06-04 14:39:52,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 576 transitions, 8062 flow [2024-06-04 14:39:52,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:39:52,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:39:52,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-04 14:39:52,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-04 14:39:52,110 INFO L175 Difference]: Start difference. First operand has 386 places, 547 transitions, 6642 flow. Second operand 9 states and 164 transitions. [2024-06-04 14:39:52,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 576 transitions, 8062 flow [2024-06-04 14:39:56,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 576 transitions, 7728 flow, removed 82 selfloop flow, removed 6 redundant places. [2024-06-04 14:39:56,761 INFO L231 Difference]: Finished difference. Result has 390 places, 556 transitions, 6610 flow [2024-06-04 14:39:56,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6308, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6610, PETRI_PLACES=390, PETRI_TRANSITIONS=556} [2024-06-04 14:39:56,761 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 345 predicate places. [2024-06-04 14:39:56,762 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 556 transitions, 6610 flow [2024-06-04 14:39:56,762 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 14:39:56,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:56,762 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 14:39:56,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-04 14:39:56,762 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 14:39:56,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:56,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1234035687, now seen corresponding path program 1 times [2024-06-04 14:39:56,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:56,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249696295] [2024-06-04 14:39:56,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:56,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:58,103 INFO 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 14:39:58,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:58,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249696295] [2024-06-04 14:39:58,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249696295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:58,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:58,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:39:58,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349256745] [2024-06-04 14:39:58,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:58,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:39:58,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:58,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:39:58,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:39:58,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:39:58,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 556 transitions, 6610 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 14:39:58,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:58,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:39:58,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:59,950 INFO L124 PetriNetUnfolderBase]: 4404/7096 cut-off events. [2024-06-04 14:39:59,950 INFO L125 PetriNetUnfolderBase]: For 1701938/1701943 co-relation queries the response was YES. [2024-06-04 14:40:00,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76187 conditions, 7096 events. 4404/7096 cut-off events. For 1701938/1701943 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 44864 event pairs, 814 based on Foata normal form. 5/7097 useless extension candidates. Maximal degree in co-relation 76007. Up to 6665 conditions per place. [2024-06-04 14:40:00,086 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 525 selfloop transitions, 48 changer transitions 0/578 dead transitions. [2024-06-04 14:40:00,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 578 transitions, 7928 flow [2024-06-04 14:40:00,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:00,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:00,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-04 14:40:00,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-04 14:40:00,087 INFO L175 Difference]: Start difference. First operand has 390 places, 556 transitions, 6610 flow. Second operand 8 states and 147 transitions. [2024-06-04 14:40:00,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 578 transitions, 7928 flow [2024-06-04 14:40:05,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 578 transitions, 7760 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-04 14:40:05,102 INFO L231 Difference]: Finished difference. Result has 394 places, 559 transitions, 6650 flow [2024-06-04 14:40:05,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6442, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6650, PETRI_PLACES=394, PETRI_TRANSITIONS=559} [2024-06-04 14:40:05,103 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 349 predicate places. [2024-06-04 14:40:05,103 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 559 transitions, 6650 flow [2024-06-04 14:40:05,103 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 14:40:05,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:05,103 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 14:40:05,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-04 14:40:05,104 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 14:40:05,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:05,105 INFO L85 PathProgramCache]: Analyzing trace with hash -921426461, now seen corresponding path program 4 times [2024-06-04 14:40:05,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:05,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958171011] [2024-06-04 14:40:05,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:05,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:06,117 INFO 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 14:40:06,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:06,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958171011] [2024-06-04 14:40:06,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958171011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:06,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:06,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:06,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355568422] [2024-06-04 14:40:06,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:06,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:06,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:06,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:06,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:06,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:06,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 559 transitions, 6650 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 14:40:06,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:06,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:06,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:08,251 INFO L124 PetriNetUnfolderBase]: 4409/7104 cut-off events. [2024-06-04 14:40:08,251 INFO L125 PetriNetUnfolderBase]: For 1725649/1725656 co-relation queries the response was YES. [2024-06-04 14:40:08,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76634 conditions, 7104 events. 4409/7104 cut-off events. For 1725649/1725656 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 44922 event pairs, 812 based on Foata normal form. 7/7107 useless extension candidates. Maximal degree in co-relation 76453. Up to 6526 conditions per place. [2024-06-04 14:40:08,355 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 474 selfloop transitions, 104 changer transitions 0/583 dead transitions. [2024-06-04 14:40:08,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 583 transitions, 8012 flow [2024-06-04 14:40:08,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:08,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:08,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-04 14:40:08,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-04 14:40:08,357 INFO L175 Difference]: Start difference. First operand has 394 places, 559 transitions, 6650 flow. Second operand 8 states and 150 transitions. [2024-06-04 14:40:08,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 583 transitions, 8012 flow [2024-06-04 14:40:12,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 583 transitions, 7830 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-04 14:40:12,961 INFO L231 Difference]: Finished difference. Result has 396 places, 562 transitions, 6804 flow [2024-06-04 14:40:12,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6468, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6804, PETRI_PLACES=396, PETRI_TRANSITIONS=562} [2024-06-04 14:40:12,962 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 351 predicate places. [2024-06-04 14:40:12,962 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 562 transitions, 6804 flow [2024-06-04 14:40:12,962 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 14:40:12,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:12,962 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 14:40:12,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-04 14:40:12,963 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 14:40:12,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:12,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1908678481, now seen corresponding path program 2 times [2024-06-04 14:40:12,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:12,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291205506] [2024-06-04 14:40:12,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:12,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:14,263 INFO 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 14:40:14,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:14,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291205506] [2024-06-04 14:40:14,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291205506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:14,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:14,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:14,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296078884] [2024-06-04 14:40:14,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:14,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:14,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:14,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:14,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:14,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:14,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 562 transitions, 6804 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 14:40:14,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:14,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:14,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:16,142 INFO L124 PetriNetUnfolderBase]: 4414/7120 cut-off events. [2024-06-04 14:40:16,142 INFO L125 PetriNetUnfolderBase]: For 1753219/1753224 co-relation queries the response was YES. [2024-06-04 14:40:16,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77350 conditions, 7120 events. 4414/7120 cut-off events. For 1753219/1753224 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 45153 event pairs, 820 based on Foata normal form. 5/7121 useless extension candidates. Maximal degree in co-relation 77168. Up to 6668 conditions per place. [2024-06-04 14:40:16,265 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 521 selfloop transitions, 54 changer transitions 0/580 dead transitions. [2024-06-04 14:40:16,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 580 transitions, 8110 flow [2024-06-04 14:40:16,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:16,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:16,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-04 14:40:16,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-04 14:40:16,266 INFO L175 Difference]: Start difference. First operand has 396 places, 562 transitions, 6804 flow. Second operand 8 states and 145 transitions. [2024-06-04 14:40:16,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 580 transitions, 8110 flow [2024-06-04 14:40:20,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 580 transitions, 7800 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-06-04 14:40:20,643 INFO L231 Difference]: Finished difference. Result has 398 places, 565 transitions, 6720 flow [2024-06-04 14:40:20,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6494, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6720, PETRI_PLACES=398, PETRI_TRANSITIONS=565} [2024-06-04 14:40:20,644 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 353 predicate places. [2024-06-04 14:40:20,644 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 565 transitions, 6720 flow [2024-06-04 14:40:20,644 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 14:40:20,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:20,644 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 14:40:20,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-04 14:40:20,644 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 14:40:20,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:20,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1908678264, now seen corresponding path program 3 times [2024-06-04 14:40:20,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:20,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921479852] [2024-06-04 14:40:20,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:20,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:21,785 INFO 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 14:40:21,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:21,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921479852] [2024-06-04 14:40:21,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921479852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:21,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:21,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:21,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890636145] [2024-06-04 14:40:21,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:21,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:21,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:21,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:21,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:21,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:21,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 565 transitions, 6720 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 14:40:21,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:21,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:21,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:23,824 INFO L124 PetriNetUnfolderBase]: 4450/7164 cut-off events. [2024-06-04 14:40:23,824 INFO L125 PetriNetUnfolderBase]: For 1805076/1805082 co-relation queries the response was YES. [2024-06-04 14:40:23,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78562 conditions, 7164 events. 4450/7164 cut-off events. For 1805076/1805082 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 45294 event pairs, 829 based on Foata normal form. 4/7161 useless extension candidates. Maximal degree in co-relation 78379. Up to 6639 conditions per place. [2024-06-04 14:40:23,938 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 523 selfloop transitions, 66 changer transitions 0/594 dead transitions. [2024-06-04 14:40:23,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 594 transitions, 8552 flow [2024-06-04 14:40:23,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:40:23,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:40:23,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-04 14:40:23,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 14:40:23,939 INFO L175 Difference]: Start difference. First operand has 398 places, 565 transitions, 6720 flow. Second operand 9 states and 162 transitions. [2024-06-04 14:40:23,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 594 transitions, 8552 flow [2024-06-04 14:40:29,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 594 transitions, 8337 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-04 14:40:29,182 INFO L231 Difference]: Finished difference. Result has 403 places, 577 transitions, 6991 flow [2024-06-04 14:40:29,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6516, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6991, PETRI_PLACES=403, PETRI_TRANSITIONS=577} [2024-06-04 14:40:29,183 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 358 predicate places. [2024-06-04 14:40:29,183 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 577 transitions, 6991 flow [2024-06-04 14:40:29,183 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 14:40:29,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:29,183 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 14:40:29,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-04 14:40:29,183 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 14:40:29,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:29,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1414508631, now seen corresponding path program 3 times [2024-06-04 14:40:29,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:29,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378780056] [2024-06-04 14:40:29,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:29,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:30,612 INFO 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 14:40:30,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:30,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378780056] [2024-06-04 14:40:30,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378780056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:30,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:30,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:30,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936791205] [2024-06-04 14:40:30,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:30,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:30,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:30,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:30,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:30,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:30,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 577 transitions, 6991 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 14:40:30,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:30,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:30,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:32,559 INFO L124 PetriNetUnfolderBase]: 4463/7182 cut-off events. [2024-06-04 14:40:32,559 INFO L125 PetriNetUnfolderBase]: For 1839624/1839629 co-relation queries the response was YES. [2024-06-04 14:40:32,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79699 conditions, 7182 events. 4463/7182 cut-off events. For 1839624/1839629 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 45444 event pairs, 821 based on Foata normal form. 5/7183 useless extension candidates. Maximal degree in co-relation 79513. Up to 6711 conditions per place. [2024-06-04 14:40:32,683 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 524 selfloop transitions, 70 changer transitions 0/599 dead transitions. [2024-06-04 14:40:32,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 599 transitions, 8719 flow [2024-06-04 14:40:32,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:32,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:32,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-04 14:40:32,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-04 14:40:32,684 INFO L175 Difference]: Start difference. First operand has 403 places, 577 transitions, 6991 flow. Second operand 8 states and 147 transitions. [2024-06-04 14:40:32,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 599 transitions, 8719 flow [2024-06-04 14:40:37,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 599 transitions, 8551 flow, removed 60 selfloop flow, removed 4 redundant places. [2024-06-04 14:40:37,610 INFO L231 Difference]: Finished difference. Result has 407 places, 583 transitions, 7203 flow [2024-06-04 14:40:37,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6823, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7203, PETRI_PLACES=407, PETRI_TRANSITIONS=583} [2024-06-04 14:40:37,611 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 362 predicate places. [2024-06-04 14:40:37,611 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 583 transitions, 7203 flow [2024-06-04 14:40:37,611 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 14:40:37,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:37,611 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 14:40:37,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-04 14:40:37,611 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 14:40:37,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:37,611 INFO L85 PathProgramCache]: Analyzing trace with hash -2141044447, now seen corresponding path program 5 times [2024-06-04 14:40:37,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:37,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113078288] [2024-06-04 14:40:37,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:37,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:38,674 INFO 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 14:40:38,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:38,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113078288] [2024-06-04 14:40:38,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113078288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:38,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:38,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:38,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254798464] [2024-06-04 14:40:38,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:38,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:38,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:38,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:38,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:38,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:38,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 583 transitions, 7203 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 14:40:38,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:38,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:38,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:40,589 INFO L124 PetriNetUnfolderBase]: 4484/7215 cut-off events. [2024-06-04 14:40:40,589 INFO L125 PetriNetUnfolderBase]: For 1887754/1887761 co-relation queries the response was YES. [2024-06-04 14:40:40,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80960 conditions, 7215 events. 4484/7215 cut-off events. For 1887754/1887761 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 45601 event pairs, 831 based on Foata normal form. 7/7218 useless extension candidates. Maximal degree in co-relation 80772. Up to 6554 conditions per place. [2024-06-04 14:40:40,709 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 480 selfloop transitions, 133 changer transitions 0/618 dead transitions. [2024-06-04 14:40:40,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 618 transitions, 9478 flow [2024-06-04 14:40:40,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:40,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:40,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-04 14:40:40,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-04 14:40:40,710 INFO L175 Difference]: Start difference. First operand has 407 places, 583 transitions, 7203 flow. Second operand 8 states and 150 transitions. [2024-06-04 14:40:40,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 618 transitions, 9478 flow [2024-06-04 14:40:45,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 618 transitions, 9280 flow, removed 65 selfloop flow, removed 4 redundant places. [2024-06-04 14:40:45,638 INFO L231 Difference]: Finished difference. Result has 412 places, 600 transitions, 7836 flow [2024-06-04 14:40:45,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7005, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7836, PETRI_PLACES=412, PETRI_TRANSITIONS=600} [2024-06-04 14:40:45,639 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 367 predicate places. [2024-06-04 14:40:45,639 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 600 transitions, 7836 flow [2024-06-04 14:40:45,639 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 14:40:45,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:45,639 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 14:40:45,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-04 14:40:45,639 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 14:40:45,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:45,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1908528317, now seen corresponding path program 6 times [2024-06-04 14:40:45,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:45,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458085191] [2024-06-04 14:40:45,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:45,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:45,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:46,708 INFO 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 14:40:46,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:46,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458085191] [2024-06-04 14:40:46,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458085191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:46,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:46,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:46,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104739674] [2024-06-04 14:40:46,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:46,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:46,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:46,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:46,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:46,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:46,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 600 transitions, 7836 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 14:40:46,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:46,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:46,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:48,628 INFO L124 PetriNetUnfolderBase]: 4489/7224 cut-off events. [2024-06-04 14:40:48,629 INFO L125 PetriNetUnfolderBase]: For 1919415/1919422 co-relation queries the response was YES. [2024-06-04 14:40:48,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81942 conditions, 7224 events. 4489/7224 cut-off events. For 1919415/1919422 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 45752 event pairs, 831 based on Foata normal form. 7/7227 useless extension candidates. Maximal degree in co-relation 81751. Up to 6560 conditions per place. [2024-06-04 14:40:48,754 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 482 selfloop transitions, 135 changer transitions 0/622 dead transitions. [2024-06-04 14:40:48,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 622 transitions, 9826 flow [2024-06-04 14:40:48,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:48,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:48,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-04 14:40:48,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-04 14:40:48,755 INFO L175 Difference]: Start difference. First operand has 412 places, 600 transitions, 7836 flow. Second operand 8 states and 150 transitions. [2024-06-04 14:40:48,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 622 transitions, 9826 flow [2024-06-04 14:40:55,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 622 transitions, 9573 flow, removed 89 selfloop flow, removed 3 redundant places. [2024-06-04 14:40:55,281 INFO L231 Difference]: Finished difference. Result has 417 places, 604 transitions, 8024 flow [2024-06-04 14:40:55,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7605, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8024, PETRI_PLACES=417, PETRI_TRANSITIONS=604} [2024-06-04 14:40:55,281 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 372 predicate places. [2024-06-04 14:40:55,281 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 604 transitions, 8024 flow [2024-06-04 14:40:55,281 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 14:40:55,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:55,281 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 14:40:55,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-04 14:40:55,281 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:40:55,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:55,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1761241119, now seen corresponding path program 2 times [2024-06-04 14:40:55,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:55,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163531719] [2024-06-04 14:40:55,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:55,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:56,731 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 14:40:56,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:56,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163531719] [2024-06-04 14:40:56,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163531719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:56,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:56,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:40:56,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508959489] [2024-06-04 14:40:56,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:56,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:40:56,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:56,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:40:56,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:40:56,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:56,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 604 transitions, 8024 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 14:40:56,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:56,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:56,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:59,478 INFO L124 PetriNetUnfolderBase]: 4612/7429 cut-off events. [2024-06-04 14:40:59,478 INFO L125 PetriNetUnfolderBase]: For 2015388/2015391 co-relation queries the response was YES. [2024-06-04 14:40:59,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83729 conditions, 7429 events. 4612/7429 cut-off events. For 2015388/2015391 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 47328 event pairs, 804 based on Foata normal form. 12/7437 useless extension candidates. Maximal degree in co-relation 83536. Up to 5963 conditions per place. [2024-06-04 14:40:59,596 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 483 selfloop transitions, 172 changer transitions 0/660 dead transitions. [2024-06-04 14:40:59,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 660 transitions, 9830 flow [2024-06-04 14:40:59,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:40:59,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:40:59,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 224 transitions. [2024-06-04 14:40:59,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4628099173553719 [2024-06-04 14:40:59,597 INFO L175 Difference]: Start difference. First operand has 417 places, 604 transitions, 8024 flow. Second operand 11 states and 224 transitions. [2024-06-04 14:40:59,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 660 transitions, 9830 flow [2024-06-04 14:41:03,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 660 transitions, 9542 flow, removed 59 selfloop flow, removed 4 redundant places. [2024-06-04 14:41:03,574 INFO L231 Difference]: Finished difference. Result has 426 places, 612 transitions, 8303 flow [2024-06-04 14:41:03,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7736, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8303, PETRI_PLACES=426, PETRI_TRANSITIONS=612} [2024-06-04 14:41:03,575 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 381 predicate places. [2024-06-04 14:41:03,575 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 612 transitions, 8303 flow [2024-06-04 14:41:03,575 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 14:41:03,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:03,575 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 14:41:03,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-04 14:41:03,575 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:03,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:03,575 INFO L85 PathProgramCache]: Analyzing trace with hash 177558335, now seen corresponding path program 3 times [2024-06-04 14:41:03,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:03,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512985010] [2024-06-04 14:41:03,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:03,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:05,034 INFO 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 14:41:05,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:05,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512985010] [2024-06-04 14:41:05,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512985010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:05,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:05,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:41:05,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564231975] [2024-06-04 14:41:05,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:05,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:41:05,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:05,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:41:05,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:41:05,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:05,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 612 transitions, 8303 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 14:41:05,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:05,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:05,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:07,845 INFO L124 PetriNetUnfolderBase]: 4722/7631 cut-off events. [2024-06-04 14:41:07,845 INFO L125 PetriNetUnfolderBase]: For 2066495/2066498 co-relation queries the response was YES. [2024-06-04 14:41:07,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86227 conditions, 7631 events. 4722/7631 cut-off events. For 2066495/2066498 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 49157 event pairs, 867 based on Foata normal form. 12/7639 useless extension candidates. Maximal degree in co-relation 86031. Up to 6236 conditions per place. [2024-06-04 14:41:07,979 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 474 selfloop transitions, 187 changer transitions 0/666 dead transitions. [2024-06-04 14:41:07,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 666 transitions, 10092 flow [2024-06-04 14:41:07,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:41:07,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:41:07,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2024-06-04 14:41:07,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45867768595041325 [2024-06-04 14:41:07,980 INFO L175 Difference]: Start difference. First operand has 426 places, 612 transitions, 8303 flow. Second operand 11 states and 222 transitions. [2024-06-04 14:41:07,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 666 transitions, 10092 flow [2024-06-04 14:41:12,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 666 transitions, 9667 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-04 14:41:12,240 INFO L231 Difference]: Finished difference. Result has 433 places, 620 transitions, 8501 flow [2024-06-04 14:41:12,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7888, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8501, PETRI_PLACES=433, PETRI_TRANSITIONS=620} [2024-06-04 14:41:12,241 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 388 predicate places. [2024-06-04 14:41:12,241 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 620 transitions, 8501 flow [2024-06-04 14:41:12,241 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 14:41:12,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:12,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:12,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-04 14:41:12,242 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:12,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:12,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1118873605, now seen corresponding path program 4 times [2024-06-04 14:41:12,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:12,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811772305] [2024-06-04 14:41:12,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:12,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:13,541 INFO 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 14:41:13,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:13,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811772305] [2024-06-04 14:41:13,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811772305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:13,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:13,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:41:13,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392281845] [2024-06-04 14:41:13,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:13,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:41:13,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:13,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:41:13,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:41:13,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:13,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 620 transitions, 8501 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 14:41:13,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:13,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:13,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:16,414 INFO L124 PetriNetUnfolderBase]: 4804/7793 cut-off events. [2024-06-04 14:41:16,414 INFO L125 PetriNetUnfolderBase]: For 2100772/2100775 co-relation queries the response was YES. [2024-06-04 14:41:16,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87768 conditions, 7793 events. 4804/7793 cut-off events. For 2100772/2100775 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 50742 event pairs, 897 based on Foata normal form. 12/7801 useless extension candidates. Maximal degree in co-relation 87569. Up to 6378 conditions per place. [2024-06-04 14:41:16,547 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 480 selfloop transitions, 183 changer transitions 0/668 dead transitions. [2024-06-04 14:41:16,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 668 transitions, 10228 flow [2024-06-04 14:41:16,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:41:16,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:41:16,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-06-04 14:41:16,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4607438016528926 [2024-06-04 14:41:16,549 INFO L175 Difference]: Start difference. First operand has 433 places, 620 transitions, 8501 flow. Second operand 11 states and 223 transitions. [2024-06-04 14:41:16,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 668 transitions, 10228 flow [2024-06-04 14:41:20,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 668 transitions, 9834 flow, removed 55 selfloop flow, removed 5 redundant places. [2024-06-04 14:41:20,972 INFO L231 Difference]: Finished difference. Result has 440 places, 622 transitions, 8615 flow [2024-06-04 14:41:20,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8111, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8615, PETRI_PLACES=440, PETRI_TRANSITIONS=622} [2024-06-04 14:41:20,973 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 395 predicate places. [2024-06-04 14:41:20,973 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 622 transitions, 8615 flow [2024-06-04 14:41:20,973 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 14:41:20,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:20,973 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 14:41:20,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-04 14:41:20,974 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:20,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:20,974 INFO L85 PathProgramCache]: Analyzing trace with hash 185890205, now seen corresponding path program 5 times [2024-06-04 14:41:20,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:20,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536978923] [2024-06-04 14:41:20,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:20,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:22,364 INFO 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 14:41:22,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:22,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536978923] [2024-06-04 14:41:22,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536978923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:22,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:22,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:41:22,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234104854] [2024-06-04 14:41:22,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:22,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:41:22,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:22,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:41:22,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:41:22,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:22,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 622 transitions, 8615 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 14:41:22,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:22,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:22,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:25,000 INFO L124 PetriNetUnfolderBase]: 4845/7874 cut-off events. [2024-06-04 14:41:25,000 INFO L125 PetriNetUnfolderBase]: For 2130900/2130903 co-relation queries the response was YES. [2024-06-04 14:41:25,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87958 conditions, 7874 events. 4845/7874 cut-off events. For 2130900/2130903 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 51484 event pairs, 901 based on Foata normal form. 12/7882 useless extension candidates. Maximal degree in co-relation 87757. Up to 5526 conditions per place. [2024-06-04 14:41:25,157 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 463 selfloop transitions, 202 changer transitions 0/670 dead transitions. [2024-06-04 14:41:25,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 670 transitions, 10324 flow [2024-06-04 14:41:25,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:41:25,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:41:25,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2024-06-04 14:41:25,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45867768595041325 [2024-06-04 14:41:25,161 INFO L175 Difference]: Start difference. First operand has 440 places, 622 transitions, 8615 flow. Second operand 11 states and 222 transitions. [2024-06-04 14:41:25,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 670 transitions, 10324 flow [2024-06-04 14:41:29,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 670 transitions, 9829 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-06-04 14:41:29,915 INFO L231 Difference]: Finished difference. Result has 442 places, 623 transitions, 8634 flow [2024-06-04 14:41:29,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8120, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8634, PETRI_PLACES=442, PETRI_TRANSITIONS=623} [2024-06-04 14:41:29,916 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 397 predicate places. [2024-06-04 14:41:29,916 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 623 transitions, 8634 flow [2024-06-04 14:41:29,916 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 14:41:29,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:29,916 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 14:41:29,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-04 14:41:29,916 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 14:41:29,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:29,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1564451195, now seen corresponding path program 1 times [2024-06-04 14:41:29,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:29,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959997530] [2024-06-04 14:41:29,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:29,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:31,231 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 14:41:31,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:31,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959997530] [2024-06-04 14:41:31,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959997530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:31,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:31,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:31,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275567779] [2024-06-04 14:41:31,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:31,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:31,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:31,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:31,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:31,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:41:31,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 623 transitions, 8634 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 14:41:31,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:31,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:41:31,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:33,510 INFO L124 PetriNetUnfolderBase]: 4403/7358 cut-off events. [2024-06-04 14:41:33,510 INFO L125 PetriNetUnfolderBase]: For 2106113/2106144 co-relation queries the response was YES. [2024-06-04 14:41:33,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84033 conditions, 7358 events. 4403/7358 cut-off events. For 2106113/2106144 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 50021 event pairs, 853 based on Foata normal form. 27/7298 useless extension candidates. Maximal degree in co-relation 83833. Up to 6270 conditions per place. [2024-06-04 14:41:33,650 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 439 selfloop transitions, 83 changer transitions 0/648 dead transitions. [2024-06-04 14:41:33,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 648 transitions, 9848 flow [2024-06-04 14:41:33,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:33,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:33,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-04 14:41:33,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45202020202020204 [2024-06-04 14:41:33,652 INFO L175 Difference]: Start difference. First operand has 442 places, 623 transitions, 8634 flow. Second operand 9 states and 179 transitions. [2024-06-04 14:41:33,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 648 transitions, 9848 flow [2024-06-04 14:41:40,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 648 transitions, 9356 flow, removed 45 selfloop flow, removed 9 redundant places. [2024-06-04 14:41:40,621 INFO L231 Difference]: Finished difference. Result has 442 places, 626 transitions, 8406 flow [2024-06-04 14:41:40,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8142, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8406, PETRI_PLACES=442, PETRI_TRANSITIONS=626} [2024-06-04 14:41:40,622 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 397 predicate places. [2024-06-04 14:41:40,622 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 626 transitions, 8406 flow [2024-06-04 14:41:40,622 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 14:41:40,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:40,623 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 14:41:40,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-04 14:41:40,623 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 14:41:40,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:40,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1027105417, now seen corresponding path program 1 times [2024-06-04 14:41:40,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:40,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712736239] [2024-06-04 14:41:40,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:40,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:40,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:42,719 INFO 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 14:41:42,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:42,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712736239] [2024-06-04 14:41:42,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712736239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:42,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:42,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:42,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663268632] [2024-06-04 14:41:42,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:42,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:42,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:42,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:42,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:42,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:41:42,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 626 transitions, 8406 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 14:41:42,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:42,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:41:42,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:44,968 INFO L124 PetriNetUnfolderBase]: 4424/7391 cut-off events. [2024-06-04 14:41:44,968 INFO L125 PetriNetUnfolderBase]: For 2109245/2109276 co-relation queries the response was YES. [2024-06-04 14:41:45,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84051 conditions, 7391 events. 4424/7391 cut-off events. For 2109245/2109276 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 50276 event pairs, 872 based on Foata normal form. 24/7319 useless extension candidates. Maximal degree in co-relation 83850. Up to 6398 conditions per place. [2024-06-04 14:41:45,131 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 488 selfloop transitions, 31 changer transitions 0/645 dead transitions. [2024-06-04 14:41:45,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 645 transitions, 9578 flow [2024-06-04 14:41:45,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:45,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:45,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-04 14:41:45,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-04 14:41:45,133 INFO L175 Difference]: Start difference. First operand has 442 places, 626 transitions, 8406 flow. Second operand 9 states and 172 transitions. [2024-06-04 14:41:45,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 645 transitions, 9578 flow [2024-06-04 14:41:52,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 645 transitions, 9352 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-04 14:41:52,562 INFO L231 Difference]: Finished difference. Result has 445 places, 629 transitions, 8336 flow [2024-06-04 14:41:52,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8180, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8336, PETRI_PLACES=445, PETRI_TRANSITIONS=629} [2024-06-04 14:41:52,562 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 400 predicate places. [2024-06-04 14:41:52,562 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 629 transitions, 8336 flow [2024-06-04 14:41:52,562 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 14:41:52,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:52,562 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 14:41:52,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-04 14:41:52,563 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 14:41:52,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:52,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1867478259, now seen corresponding path program 2 times [2024-06-04 14:41:52,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:52,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005681257] [2024-06-04 14:41:52,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:52,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:54,163 INFO 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 14:41:54,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:54,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005681257] [2024-06-04 14:41:54,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005681257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:54,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:54,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:54,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49259100] [2024-06-04 14:41:54,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:54,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:54,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:54,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:54,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:54,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:41:54,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 629 transitions, 8336 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 14:41:54,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:54,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:41:54,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:56,540 INFO L124 PetriNetUnfolderBase]: 4461/7436 cut-off events. [2024-06-04 14:41:56,540 INFO L125 PetriNetUnfolderBase]: For 2206142/2206249 co-relation queries the response was YES. [2024-06-04 14:41:56,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85015 conditions, 7436 events. 4461/7436 cut-off events. For 2206142/2206249 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 50466 event pairs, 870 based on Foata normal form. 29/7359 useless extension candidates. Maximal degree in co-relation 84813. Up to 6275 conditions per place. [2024-06-04 14:41:56,667 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 421 selfloop transitions, 107 changer transitions 0/654 dead transitions. [2024-06-04 14:41:56,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 654 transitions, 9932 flow [2024-06-04 14:41:56,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:56,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:56,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-04 14:41:56,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45202020202020204 [2024-06-04 14:41:56,668 INFO L175 Difference]: Start difference. First operand has 445 places, 629 transitions, 8336 flow. Second operand 9 states and 179 transitions. [2024-06-04 14:41:56,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 654 transitions, 9932 flow [2024-06-04 14:42:03,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 654 transitions, 9804 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-04 14:42:03,496 INFO L231 Difference]: Finished difference. Result has 447 places, 635 transitions, 8619 flow [2024-06-04 14:42:03,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8208, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8619, PETRI_PLACES=447, PETRI_TRANSITIONS=635} [2024-06-04 14:42:03,497 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 402 predicate places. [2024-06-04 14:42:03,497 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 635 transitions, 8619 flow [2024-06-04 14:42:03,497 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 14:42:03,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:03,497 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 14:42:03,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-04 14:42:03,497 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 14:42:03,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:03,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1867464309, now seen corresponding path program 3 times [2024-06-04 14:42:03,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:03,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32878866] [2024-06-04 14:42:03,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:03,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:05,149 INFO 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 14:42:05,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:05,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32878866] [2024-06-04 14:42:05,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32878866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:05,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:05,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:42:05,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838288384] [2024-06-04 14:42:05,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:05,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:42:05,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:05,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:42:05,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:42:05,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:42:05,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 635 transitions, 8619 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 14:42:05,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:05,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:42:05,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:07,604 INFO L124 PetriNetUnfolderBase]: 4471/7446 cut-off events. [2024-06-04 14:42:07,604 INFO L125 PetriNetUnfolderBase]: For 2246371/2246518 co-relation queries the response was YES. [2024-06-04 14:42:07,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85986 conditions, 7446 events. 4471/7446 cut-off events. For 2246371/2246518 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 50472 event pairs, 870 based on Foata normal form. 27/7365 useless extension candidates. Maximal degree in co-relation 85783. Up to 6285 conditions per place. [2024-06-04 14:42:07,737 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 424 selfloop transitions, 108 changer transitions 0/658 dead transitions. [2024-06-04 14:42:07,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 658 transitions, 10151 flow [2024-06-04 14:42:07,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:42:07,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:42:07,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-04 14:42:07,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45707070707070707 [2024-06-04 14:42:07,738 INFO L175 Difference]: Start difference. First operand has 447 places, 635 transitions, 8619 flow. Second operand 9 states and 181 transitions. [2024-06-04 14:42:07,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 658 transitions, 10151 flow [2024-06-04 14:42:12,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 658 transitions, 9902 flow, removed 61 selfloop flow, removed 5 redundant places. [2024-06-04 14:42:12,185 INFO L231 Difference]: Finished difference. Result has 451 places, 638 transitions, 8690 flow [2024-06-04 14:42:12,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8390, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8690, PETRI_PLACES=451, PETRI_TRANSITIONS=638} [2024-06-04 14:42:12,185 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 406 predicate places. [2024-06-04 14:42:12,186 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 638 transitions, 8690 flow [2024-06-04 14:42:12,186 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 14:42:12,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:12,186 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 14:42:12,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-04 14:42:12,186 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 14:42:12,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:12,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1908537245, now seen corresponding path program 4 times [2024-06-04 14:42:12,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:12,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319883113] [2024-06-04 14:42:12,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:12,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:13,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:13,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:13,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319883113] [2024-06-04 14:42:13,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319883113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:13,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:13,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:42:13,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744950806] [2024-06-04 14:42:13,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:13,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:42:13,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:13,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:42:13,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:42:13,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:42:13,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 638 transitions, 8690 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 14:42:13,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:13,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:42:13,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:16,211 INFO L124 PetriNetUnfolderBase]: 4474/7445 cut-off events. [2024-06-04 14:42:16,211 INFO L125 PetriNetUnfolderBase]: For 2235451/2235522 co-relation queries the response was YES. [2024-06-04 14:42:16,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85652 conditions, 7445 events. 4474/7445 cut-off events. For 2235451/2235522 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 50393 event pairs, 867 based on Foata normal form. 25/7364 useless extension candidates. Maximal degree in co-relation 85447. Up to 6354 conditions per place. [2024-06-04 14:42:16,351 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 439 selfloop transitions, 90 changer transitions 0/655 dead transitions. [2024-06-04 14:42:16,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 655 transitions, 9812 flow [2024-06-04 14:42:16,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:42:16,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:42:16,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-04 14:42:16,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44191919191919193 [2024-06-04 14:42:16,352 INFO L175 Difference]: Start difference. First operand has 451 places, 638 transitions, 8690 flow. Second operand 9 states and 175 transitions. [2024-06-04 14:42:16,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 655 transitions, 9812 flow [2024-06-04 14:42:20,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 655 transitions, 9519 flow, removed 57 selfloop flow, removed 6 redundant places. [2024-06-04 14:42:20,784 INFO L231 Difference]: Finished difference. Result has 454 places, 638 transitions, 8583 flow [2024-06-04 14:42:20,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8397, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8583, PETRI_PLACES=454, PETRI_TRANSITIONS=638} [2024-06-04 14:42:20,784 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 409 predicate places. [2024-06-04 14:42:20,784 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 638 transitions, 8583 flow [2024-06-04 14:42:20,784 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 14:42:20,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:20,785 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 14:42:20,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-04 14:42:20,785 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 14:42:20,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:20,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1311131468, now seen corresponding path program 4 times [2024-06-04 14:42:20,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:20,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111756974] [2024-06-04 14:42:20,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:20,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:21,898 INFO 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 14:42:21,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:21,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111756974] [2024-06-04 14:42:21,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111756974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:21,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:21,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:42:21,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496057372] [2024-06-04 14:42:21,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:21,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:42:21,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:21,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:42:21,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:42:21,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:21,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 638 transitions, 8583 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 14:42:21,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:21,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:21,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:24,877 INFO L124 PetriNetUnfolderBase]: 4940/8033 cut-off events. [2024-06-04 14:42:24,877 INFO L125 PetriNetUnfolderBase]: For 2224618/2224624 co-relation queries the response was YES. [2024-06-04 14:42:24,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89826 conditions, 8033 events. 4940/8033 cut-off events. For 2224618/2224624 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 52792 event pairs, 957 based on Foata normal form. 6/8031 useless extension candidates. Maximal degree in co-relation 89620. Up to 7485 conditions per place. [2024-06-04 14:42:25,007 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 604 selfloop transitions, 52 changer transitions 0/661 dead transitions. [2024-06-04 14:42:25,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 661 transitions, 10108 flow [2024-06-04 14:42:25,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:42:25,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:42:25,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-04 14:42:25,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42329545454545453 [2024-06-04 14:42:25,008 INFO L175 Difference]: Start difference. First operand has 454 places, 638 transitions, 8583 flow. Second operand 8 states and 149 transitions. [2024-06-04 14:42:25,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 661 transitions, 10108 flow [2024-06-04 14:42:31,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 661 transitions, 9871 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-04 14:42:31,185 INFO L231 Difference]: Finished difference. Result has 453 places, 641 transitions, 8579 flow [2024-06-04 14:42:31,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8346, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=586, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8579, PETRI_PLACES=453, PETRI_TRANSITIONS=641} [2024-06-04 14:42:31,185 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 408 predicate places. [2024-06-04 14:42:31,185 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 641 transitions, 8579 flow [2024-06-04 14:42:31,185 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 14:42:31,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:31,186 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 14:42:31,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-04 14:42:31,186 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 14:42:31,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:31,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1310743658, now seen corresponding path program 5 times [2024-06-04 14:42:31,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:31,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185502587] [2024-06-04 14:42:31,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:31,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:32,254 INFO 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 14:42:32,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:32,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185502587] [2024-06-04 14:42:32,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185502587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:32,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:32,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:42:32,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232943859] [2024-06-04 14:42:32,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:32,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:42:32,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:32,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:42:32,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:42:32,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:32,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 641 transitions, 8579 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 14:42:32,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:32,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:32,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:35,225 INFO L124 PetriNetUnfolderBase]: 4966/8060 cut-off events. [2024-06-04 14:42:35,225 INFO L125 PetriNetUnfolderBase]: For 2278047/2278053 co-relation queries the response was YES. [2024-06-04 14:42:35,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90863 conditions, 8060 events. 4966/8060 cut-off events. For 2278047/2278053 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 52842 event pairs, 948 based on Foata normal form. 6/8059 useless extension candidates. Maximal degree in co-relation 90656. Up to 7486 conditions per place. [2024-06-04 14:42:35,362 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 593 selfloop transitions, 68 changer transitions 0/666 dead transitions. [2024-06-04 14:42:35,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 666 transitions, 10546 flow [2024-06-04 14:42:35,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:42:35,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:42:35,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-04 14:42:35,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065656565656566 [2024-06-04 14:42:35,363 INFO L175 Difference]: Start difference. First operand has 453 places, 641 transitions, 8579 flow. Second operand 9 states and 161 transitions. [2024-06-04 14:42:35,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 666 transitions, 10546 flow [2024-06-04 14:42:40,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 666 transitions, 10306 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-04 14:42:40,905 INFO L231 Difference]: Finished difference. Result has 455 places, 647 transitions, 8764 flow [2024-06-04 14:42:40,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8339, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8764, PETRI_PLACES=455, PETRI_TRANSITIONS=647} [2024-06-04 14:42:40,906 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 410 predicate places. [2024-06-04 14:42:40,906 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 647 transitions, 8764 flow [2024-06-04 14:42:40,906 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 14:42:40,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:40,906 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 14:42:40,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-04 14:42:40,906 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 14:42:40,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:40,906 INFO L85 PathProgramCache]: Analyzing trace with hash 325709680, now seen corresponding path program 6 times [2024-06-04 14:42:40,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:40,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921217914] [2024-06-04 14:42:40,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:40,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:41,864 INFO 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 14:42:41,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:41,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921217914] [2024-06-04 14:42:41,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921217914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:41,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:41,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:42:41,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876232974] [2024-06-04 14:42:41,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:41,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:42:41,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:41,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:42:41,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:42:41,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:41,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 647 transitions, 8764 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 14:42:41,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:41,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:41,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:44,915 INFO L124 PetriNetUnfolderBase]: 4960/8053 cut-off events. [2024-06-04 14:42:44,915 INFO L125 PetriNetUnfolderBase]: For 2289372/2289378 co-relation queries the response was YES. [2024-06-04 14:42:45,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91055 conditions, 8053 events. 4960/8053 cut-off events. For 2289372/2289378 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 52823 event pairs, 949 based on Foata normal form. 6/8052 useless extension candidates. Maximal degree in co-relation 90846. Up to 7513 conditions per place. [2024-06-04 14:42:45,053 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 613 selfloop transitions, 50 changer transitions 0/668 dead transitions. [2024-06-04 14:42:45,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 668 transitions, 10196 flow [2024-06-04 14:42:45,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:42:45,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:42:45,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-04 14:42:45,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 14:42:45,054 INFO L175 Difference]: Start difference. First operand has 455 places, 647 transitions, 8764 flow. Second operand 9 states and 162 transitions. [2024-06-04 14:42:45,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 668 transitions, 10196 flow [2024-06-04 14:42:51,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 668 transitions, 9882 flow, removed 101 selfloop flow, removed 6 redundant places. [2024-06-04 14:42:51,153 INFO L231 Difference]: Finished difference. Result has 458 places, 647 transitions, 8556 flow [2024-06-04 14:42:51,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8450, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=597, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8556, PETRI_PLACES=458, PETRI_TRANSITIONS=647} [2024-06-04 14:42:51,153 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 413 predicate places. [2024-06-04 14:42:51,154 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 647 transitions, 8556 flow [2024-06-04 14:42:51,154 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 14:42:51,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:51,154 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 14:42:51,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-04 14:42:51,154 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 14:42:51,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:51,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1567840515, now seen corresponding path program 7 times [2024-06-04 14:42:51,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:51,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451254696] [2024-06-04 14:42:51,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:51,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:52,129 INFO 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 14:42:52,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:52,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451254696] [2024-06-04 14:42:52,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451254696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:52,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:52,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:42:52,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471345698] [2024-06-04 14:42:52,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:52,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:42:52,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:52,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:42:52,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:42:52,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:52,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 647 transitions, 8556 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 14:42:52,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:52,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:52,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:55,141 INFO L124 PetriNetUnfolderBase]: 4957/8063 cut-off events. [2024-06-04 14:42:55,141 INFO L125 PetriNetUnfolderBase]: For 2293874/2293886 co-relation queries the response was YES. [2024-06-04 14:42:55,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90669 conditions, 8063 events. 4957/8063 cut-off events. For 2293874/2293886 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 52964 event pairs, 960 based on Foata normal form. 9/8059 useless extension candidates. Maximal degree in co-relation 90459. Up to 7438 conditions per place. [2024-06-04 14:42:55,269 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 576 selfloop transitions, 87 changer transitions 0/668 dead transitions. [2024-06-04 14:42:55,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 668 transitions, 9993 flow [2024-06-04 14:42:55,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:42:55,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:42:55,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-04 14:42:55,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 14:42:55,270 INFO L175 Difference]: Start difference. First operand has 458 places, 647 transitions, 8556 flow. Second operand 9 states and 162 transitions. [2024-06-04 14:42:55,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 668 transitions, 9993 flow [2024-06-04 14:43:02,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 668 transitions, 9785 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-06-04 14:43:02,034 INFO L231 Difference]: Finished difference. Result has 459 places, 648 transitions, 8559 flow [2024-06-04 14:43:02,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8362, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=560, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8559, PETRI_PLACES=459, PETRI_TRANSITIONS=648} [2024-06-04 14:43:02,035 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 414 predicate places. [2024-06-04 14:43:02,035 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 648 transitions, 8559 flow [2024-06-04 14:43:02,035 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 14:43:02,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:02,035 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 14:43:02,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-04 14:43:02,035 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 14:43:02,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:02,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1567482248, now seen corresponding path program 7 times [2024-06-04 14:43:02,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:02,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978192009] [2024-06-04 14:43:02,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:02,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:03,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:03,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:03,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978192009] [2024-06-04 14:43:03,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978192009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:03,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:03,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:43:03,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889688408] [2024-06-04 14:43:03,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:03,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:43:03,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:03,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:43:03,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:43:03,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:43:03,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 648 transitions, 8559 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 14:43:03,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:03,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:43:03,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:05,786 INFO L124 PetriNetUnfolderBase]: 4951/8051 cut-off events. [2024-06-04 14:43:05,786 INFO L125 PetriNetUnfolderBase]: For 2312469/2312475 co-relation queries the response was YES. [2024-06-04 14:43:05,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90427 conditions, 8051 events. 4951/8051 cut-off events. For 2312469/2312475 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 52907 event pairs, 958 based on Foata normal form. 6/8050 useless extension candidates. Maximal degree in co-relation 90216. Up to 7484 conditions per place. [2024-06-04 14:43:06,094 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 607 selfloop transitions, 55 changer transitions 0/667 dead transitions. [2024-06-04 14:43:06,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 667 transitions, 9999 flow [2024-06-04 14:43:06,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:43:06,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:43:06,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-04 14:43:06,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42329545454545453 [2024-06-04 14:43:06,096 INFO L175 Difference]: Start difference. First operand has 459 places, 648 transitions, 8559 flow. Second operand 8 states and 149 transitions. [2024-06-04 14:43:06,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 667 transitions, 9999 flow [2024-06-04 14:43:12,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 667 transitions, 9777 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-04 14:43:12,164 INFO L231 Difference]: Finished difference. Result has 461 places, 648 transitions, 8453 flow [2024-06-04 14:43:12,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8337, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8453, PETRI_PLACES=461, PETRI_TRANSITIONS=648} [2024-06-04 14:43:12,165 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 416 predicate places. [2024-06-04 14:43:12,165 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 648 transitions, 8453 flow [2024-06-04 14:43:12,165 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 14:43:12,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:12,165 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 14:43:12,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-04 14:43:12,165 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 14:43:12,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:12,165 INFO L85 PathProgramCache]: Analyzing trace with hash 325859193, now seen corresponding path program 8 times [2024-06-04 14:43:12,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:12,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596411741] [2024-06-04 14:43:12,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:12,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:13,266 INFO 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 14:43:13,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:13,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596411741] [2024-06-04 14:43:13,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596411741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:13,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:13,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:43:13,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599288169] [2024-06-04 14:43:13,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:13,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:43:13,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:13,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:43:13,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:43:13,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:43:13,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 648 transitions, 8453 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 14:43:13,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:13,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:43:13,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:15,959 INFO L124 PetriNetUnfolderBase]: 4948/8041 cut-off events. [2024-06-04 14:43:15,960 INFO L125 PetriNetUnfolderBase]: For 2318919/2318931 co-relation queries the response was YES. [2024-06-04 14:43:16,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90209 conditions, 8041 events. 4948/8041 cut-off events. For 2318919/2318931 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 52725 event pairs, 951 based on Foata normal form. 9/8037 useless extension candidates. Maximal degree in co-relation 89997. Up to 7418 conditions per place. [2024-06-04 14:43:16,292 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 574 selfloop transitions, 88 changer transitions 0/667 dead transitions. [2024-06-04 14:43:16,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 667 transitions, 9881 flow [2024-06-04 14:43:16,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:43:16,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:43:16,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-04 14:43:16,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-04 14:43:16,294 INFO L175 Difference]: Start difference. First operand has 461 places, 648 transitions, 8453 flow. Second operand 8 states and 148 transitions. [2024-06-04 14:43:16,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 667 transitions, 9881 flow [2024-06-04 14:43:22,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 667 transitions, 9597 flow, removed 79 selfloop flow, removed 7 redundant places. [2024-06-04 14:43:22,811 INFO L231 Difference]: Finished difference. Result has 462 places, 649 transitions, 8379 flow [2024-06-04 14:43:22,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8187, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=560, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8379, PETRI_PLACES=462, PETRI_TRANSITIONS=649} [2024-06-04 14:43:22,812 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 417 predicate places. [2024-06-04 14:43:22,812 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 649 transitions, 8379 flow [2024-06-04 14:43:22,812 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 14:43:22,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:22,813 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 14:43:22,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-04 14:43:22,813 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 14:43:22,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:22,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1567482031, now seen corresponding path program 4 times [2024-06-04 14:43:22,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:22,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610236978] [2024-06-04 14:43:22,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:22,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:22,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:24,286 INFO 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 14:43:24,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:24,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610236978] [2024-06-04 14:43:24,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610236978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:24,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:24,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:43:24,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605205598] [2024-06-04 14:43:24,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:24,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:43:24,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:24,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:43:24,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:43:24,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:43:24,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 649 transitions, 8379 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 14:43:24,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:24,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:43:24,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:27,065 INFO L124 PetriNetUnfolderBase]: 4945/8043 cut-off events. [2024-06-04 14:43:27,065 INFO L125 PetriNetUnfolderBase]: For 2336128/2336134 co-relation queries the response was YES. [2024-06-04 14:43:27,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90052 conditions, 8043 events. 4945/8043 cut-off events. For 2336128/2336134 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 52849 event pairs, 958 based on Foata normal form. 5/8041 useless extension candidates. Maximal degree in co-relation 89840. Up to 7545 conditions per place. [2024-06-04 14:43:27,196 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 619 selfloop transitions, 41 changer transitions 0/665 dead transitions. [2024-06-04 14:43:27,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 665 transitions, 9759 flow [2024-06-04 14:43:27,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:43:27,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:43:27,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-04 14:43:27,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 14:43:27,197 INFO L175 Difference]: Start difference. First operand has 462 places, 649 transitions, 8379 flow. Second operand 8 states and 144 transitions. [2024-06-04 14:43:27,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 665 transitions, 9759 flow [2024-06-04 14:43:34,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 665 transitions, 9517 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-04 14:43:34,741 INFO L231 Difference]: Finished difference. Result has 464 places, 649 transitions, 8225 flow [2024-06-04 14:43:34,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8137, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8225, PETRI_PLACES=464, PETRI_TRANSITIONS=649} [2024-06-04 14:43:34,741 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 419 predicate places. [2024-06-04 14:43:34,741 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 649 transitions, 8225 flow [2024-06-04 14:43:34,741 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 14:43:34,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:34,741 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 14:43:34,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-04 14:43:34,742 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 14:43:34,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:34,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1153699921, now seen corresponding path program 5 times [2024-06-04 14:43:34,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:34,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146204742] [2024-06-04 14:43:34,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:34,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:36,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:36,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:36,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146204742] [2024-06-04 14:43:36,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146204742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:36,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:36,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:43:36,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090754577] [2024-06-04 14:43:36,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:36,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:43:36,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:36,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:43:36,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:43:36,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:43:36,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 649 transitions, 8225 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 14:43:36,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:36,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:43:36,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:38,874 INFO L124 PetriNetUnfolderBase]: 4958/8060 cut-off events. [2024-06-04 14:43:38,874 INFO L125 PetriNetUnfolderBase]: For 2377852/2377858 co-relation queries the response was YES. [2024-06-04 14:43:38,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90518 conditions, 8060 events. 4958/8060 cut-off events. For 2377852/2377858 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 52936 event pairs, 954 based on Foata normal form. 5/8058 useless extension candidates. Maximal degree in co-relation 90305. Up to 7529 conditions per place. [2024-06-04 14:43:39,021 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 601 selfloop transitions, 65 changer transitions 0/671 dead transitions. [2024-06-04 14:43:39,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 671 transitions, 10163 flow [2024-06-04 14:43:39,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:43:39,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:43:39,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-04 14:43:39,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 14:43:39,023 INFO L175 Difference]: Start difference. First operand has 464 places, 649 transitions, 8225 flow. Second operand 8 states and 144 transitions. [2024-06-04 14:43:39,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 671 transitions, 10163 flow