./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix010.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/mix010.oepc.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/mix010.oepc.i ./goblint.2024-05-21_14-57-05.files/protection/mix010.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-04 14:39:40,227 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 14:39:40,297 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 14:39:40,302 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 14:39:40,303 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 14:39:40,326 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 14:39:40,327 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 14:39:40,327 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 14:39:40,327 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 14:39:40,330 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 14:39:40,331 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 14:39:40,331 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 14:39:40,332 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 14:39:40,333 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 14:39:40,333 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 14:39:40,333 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 14:39:40,333 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 14:39:40,334 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 14:39:40,334 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 14:39:40,334 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 14:39:40,334 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 14:39:40,335 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 14:39:40,335 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 14:39:40,335 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 14:39:40,335 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 14:39:40,335 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 14:39:40,336 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 14:39:40,336 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 14:39:40,336 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 14:39:40,337 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 14:39:40,337 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 14:39:40,337 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 14:39:40,338 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:39:40,338 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 14:39:40,338 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 14:39:40,338 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 14:39:40,338 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 14:39:40,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 14:39:40,339 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 14:39:40,339 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 14:39:40,339 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 14:39:40,339 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 14:39:40,340 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 14:39:40,340 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 14:39:40,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 14:39:40,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 14:39:40,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 14:39:40,584 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 14:39:40,585 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 14:39:40,586 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix010.oepc.i [2024-06-04 14:39:41,632 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 14:39:41,829 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 14:39:41,829 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix010.oepc.i [2024-06-04 14:39:41,839 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35d021c92/8948817a657247dd94bdddfeb7648e92/FLAGa29b0292e [2024-06-04 14:39:41,851 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35d021c92/8948817a657247dd94bdddfeb7648e92 [2024-06-04 14:39:41,853 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 14:39:41,853 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 14:39:41,854 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix010.oepc.yml/witness.yml [2024-06-04 14:39:41,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 14:39:41,984 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 14:39:41,984 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 14:39:41,984 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 14:39:41,988 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 14:39:41,989 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:39:41" (1/2) ... [2024-06-04 14:39:41,989 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c35b034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:39:41, skipping insertion in model container [2024-06-04 14:39:41,989 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:39:41" (1/2) ... [2024-06-04 14:39:41,990 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@54cd4f35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:39:41, skipping insertion in model container [2024-06-04 14:39:41,991 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:39:41" (2/2) ... [2024-06-04 14:39:41,992 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c35b034 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:39:41, skipping insertion in model container [2024-06-04 14:39:41,992 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:39:41" (2/2) ... [2024-06-04 14:39:41,992 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 14:39:42,129 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 14:39:42,130 INFO L97 edCorrectnessWitness]: Location invariant before [L855-L855] (((((((((((((((((((((! multithreaded || a$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) [2024-06-04 14:39:42,130 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] (((((((((((((((((((((! multithreaded || a$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) [2024-06-04 14:39:42,130 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] (((((((((((((((((((((! multithreaded || a$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) [2024-06-04 14:39:42,130 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 14:39:42,131 INFO L106 edCorrectnessWitness]: ghost_update [L851-L851] multithreaded = 1; [2024-06-04 14:39:42,167 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 14:39:42,478 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:39:42,489 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 14:39:42,590 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:39:42,623 INFO L206 MainTranslator]: Completed translation [2024-06-04 14:39:42,624 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:39:42 WrapperNode [2024-06-04 14:39:42,624 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 14:39:42,625 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 14:39:42,625 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 14:39:42,625 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 14:39:42,630 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 02:39:42" (1/1) ... [2024-06-04 14:39:42,650 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 02:39:42" (1/1) ... [2024-06-04 14:39:42,674 INFO L138 Inliner]: procedures = 175, calls = 49, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 129 [2024-06-04 14:39:42,683 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 14:39:42,684 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 14:39:42,684 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 14:39:42,684 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 14:39:42,693 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 02:39:42" (1/1) ... [2024-06-04 14:39:42,693 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 02:39:42" (1/1) ... [2024-06-04 14:39:42,696 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 02:39:42" (1/1) ... [2024-06-04 14:39:42,724 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 14:39:42,733 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 02:39:42" (1/1) ... [2024-06-04 14:39:42,734 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 02:39:42" (1/1) ... [2024-06-04 14:39:42,748 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 02:39:42" (1/1) ... [2024-06-04 14:39:42,758 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 02:39:42" (1/1) ... [2024-06-04 14:39:42,759 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 02:39:42" (1/1) ... [2024-06-04 14:39:42,761 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 02:39:42" (1/1) ... [2024-06-04 14:39:42,763 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 14:39:42,764 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 14:39:42,764 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 14:39:42,764 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 14:39:42,765 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 02:39:42" (1/1) ... [2024-06-04 14:39:42,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:39:42,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 14:39:42,826 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 14:39:42,873 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 14:39:42,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 14:39:42,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 14:39:42,885 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 14:39:42,885 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 14:39:42,886 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 14:39:42,886 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 14:39:42,886 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-04 14:39:42,886 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-04 14:39:42,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 14:39:42,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 14:39:42,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 14:39:42,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 14:39:42,888 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 14:39:42,982 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 14:39:42,984 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 14:39:43,328 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 14:39:43,328 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 14:39:43,468 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 14:39:43,468 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 14:39:43,469 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:39:43 BoogieIcfgContainer [2024-06-04 14:39:43,469 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 14:39:43,472 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 14:39:43,472 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 14:39:43,474 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 14:39:43,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 02:39:41" (1/4) ... [2024-06-04 14:39:43,475 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f8118b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 02:39:43, skipping insertion in model container [2024-06-04 14:39:43,475 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:39:41" (2/4) ... [2024-06-04 14:39:43,475 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f8118b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 02:39:43, skipping insertion in model container [2024-06-04 14:39:43,475 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 02:39:42" (3/4) ... [2024-06-04 14:39:43,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f8118b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 02:39:43, skipping insertion in model container [2024-06-04 14:39:43,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:39:43" (4/4) ... [2024-06-04 14:39:43,477 INFO L112 eAbstractionObserver]: Analyzing ICFG mix010.oepc.i [2024-06-04 14:39:43,490 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 14:39:43,490 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-04 14:39:43,490 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 14:39:43,528 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 14:39:43,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 44 transitions, 100 flow [2024-06-04 14:39:43,584 INFO L124 PetriNetUnfolderBase]: 0/41 cut-off events. [2024-06-04 14:39:43,584 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:39:43,585 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 4. Compared 71 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 14:39:43,585 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 44 transitions, 100 flow [2024-06-04 14:39:43,588 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 35 transitions, 79 flow [2024-06-04 14:39:43,599 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 14:39:43,605 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;@3779613d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 14:39:43,605 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-04 14:39:43,610 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 14:39:43,610 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-04 14:39:43,610 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:39:43,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:43,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 14:39:43,611 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 14:39:43,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:43,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1042197905, now seen corresponding path program 1 times [2024-06-04 14:39:43,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:43,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773418248] [2024-06-04 14:39:43,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:43,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:44,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:44,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:44,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773418248] [2024-06-04 14:39:44,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773418248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:44,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:44,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 14:39:44,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064226179] [2024-06-04 14:39:44,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:44,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 14:39:44,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:44,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 14:39:44,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 14:39:44,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-04 14:39:45,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:45,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:45,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-04 14:39:45,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:45,291 INFO L124 PetriNetUnfolderBase]: 1359/2140 cut-off events. [2024-06-04 14:39:45,291 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-06-04 14:39:45,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4256 conditions, 2140 events. 1359/2140 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 10865 event pairs, 941 based on Foata normal form. 1/2087 useless extension candidates. Maximal degree in co-relation 4241. Up to 2029 conditions per place. [2024-06-04 14:39:45,305 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 34 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-04 14:39:45,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 181 flow [2024-06-04 14:39:45,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 14:39:45,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 14:39:45,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-06-04 14:39:45,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2024-06-04 14:39:45,315 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 79 flow. Second operand 3 states and 80 transitions. [2024-06-04 14:39:45,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 181 flow [2024-06-04 14:39:45,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 176 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-04 14:39:45,319 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 106 flow [2024-06-04 14:39:45,321 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 14:39:45,323 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2024-06-04 14:39:45,323 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 106 flow [2024-06-04 14:39:45,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:45,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:45,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:45,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 14:39:45,324 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 14:39:45,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:45,324 INFO L85 PathProgramCache]: Analyzing trace with hash -824764914, now seen corresponding path program 1 times [2024-06-04 14:39:45,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:45,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936196451] [2024-06-04 14:39:45,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:45,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:46,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:46,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:46,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936196451] [2024-06-04 14:39:46,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936196451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:46,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:46,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 14:39:46,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043355998] [2024-06-04 14:39:46,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:46,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 14:39:46,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:46,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 14:39:46,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-04 14:39:46,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-04 14:39:46,209 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 14:39:46,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:46,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-04 14:39:46,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:46,515 INFO L124 PetriNetUnfolderBase]: 1353/2137 cut-off events. [2024-06-04 14:39:46,516 INFO L125 PetriNetUnfolderBase]: For 418/418 co-relation queries the response was YES. [2024-06-04 14:39:46,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4795 conditions, 2137 events. 1353/2137 cut-off events. For 418/418 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 10847 event pairs, 795 based on Foata normal form. 3/2122 useless extension candidates. Maximal degree in co-relation 4780. Up to 2005 conditions per place. [2024-06-04 14:39:46,525 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 41 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2024-06-04 14:39:46,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 55 transitions, 248 flow [2024-06-04 14:39:46,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 14:39:46,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 14:39:46,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-06-04 14:39:46,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5852272727272727 [2024-06-04 14:39:46,527 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 106 flow. Second operand 4 states and 103 transitions. [2024-06-04 14:39:46,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 55 transitions, 248 flow [2024-06-04 14:39:46,528 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 14:39:46,528 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 142 flow [2024-06-04 14:39:46,529 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 14:39:46,529 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2024-06-04 14:39:46,529 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 142 flow [2024-06-04 14:39:46,530 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 14:39:46,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:46,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:46,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 14:39:46,530 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 14:39:46,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:46,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1969911213, now seen corresponding path program 1 times [2024-06-04 14:39:46,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:46,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188441967] [2024-06-04 14:39:46,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:46,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:48,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:48,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:48,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188441967] [2024-06-04 14:39:48,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188441967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:48,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:48,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:39:48,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952951568] [2024-06-04 14:39:48,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:48,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:39:48,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:48,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:39:48,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:39:48,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:39:48,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:48,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:48,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:39:48,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:48,614 INFO L124 PetriNetUnfolderBase]: 1641/2563 cut-off events. [2024-06-04 14:39:48,614 INFO L125 PetriNetUnfolderBase]: For 1353/1353 co-relation queries the response was YES. [2024-06-04 14:39:48,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6348 conditions, 2563 events. 1641/2563 cut-off events. For 1353/1353 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12931 event pairs, 746 based on Foata normal form. 3/2543 useless extension candidates. Maximal degree in co-relation 6331. Up to 2393 conditions per place. [2024-06-04 14:39:48,627 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 56 selfloop transitions, 13 changer transitions 0/75 dead transitions. [2024-06-04 14:39:48,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 75 transitions, 382 flow [2024-06-04 14:39:48,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:39:48,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:39:48,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-04 14:39:48,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-06-04 14:39:48,630 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 142 flow. Second operand 6 states and 144 transitions. [2024-06-04 14:39:48,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 75 transitions, 382 flow [2024-06-04 14:39:48,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 75 transitions, 362 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-04 14:39:48,633 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 200 flow [2024-06-04 14:39:48,633 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=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-06-04 14:39:48,633 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 8 predicate places. [2024-06-04 14:39:48,634 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 200 flow [2024-06-04 14:39:48,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:48,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:48,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:48,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 14:39:48,634 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:39:48,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:48,635 INFO L85 PathProgramCache]: Analyzing trace with hash 77643067, now seen corresponding path program 1 times [2024-06-04 14:39:48,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:48,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867693213] [2024-06-04 14:39:48,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:48,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:50,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:50,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:50,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867693213] [2024-06-04 14:39:50,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867693213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:50,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:50,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:39:50,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609864872] [2024-06-04 14:39:50,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:50,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:39:50,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:50,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:39:50,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:39:50,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:39:50,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 200 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 14:39:50,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:50,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:39:50,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:51,123 INFO L124 PetriNetUnfolderBase]: 1632/2544 cut-off events. [2024-06-04 14:39:51,124 INFO L125 PetriNetUnfolderBase]: For 2668/2668 co-relation queries the response was YES. [2024-06-04 14:39:51,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7023 conditions, 2544 events. 1632/2544 cut-off events. For 2668/2668 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12817 event pairs, 582 based on Foata normal form. 6/2525 useless extension candidates. Maximal degree in co-relation 7004. Up to 2348 conditions per place. [2024-06-04 14:39:51,138 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 60 selfloop transitions, 15 changer transitions 0/81 dead transitions. [2024-06-04 14:39:51,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 81 transitions, 442 flow [2024-06-04 14:39:51,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:39:51,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:39:51,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-04 14:39:51,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525974025974026 [2024-06-04 14:39:51,142 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 200 flow. Second operand 7 states and 162 transitions. [2024-06-04 14:39:51,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 81 transitions, 442 flow [2024-06-04 14:39:51,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 81 transitions, 414 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-04 14:39:51,147 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 221 flow [2024-06-04 14:39:51,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=221, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-06-04 14:39:51,148 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 11 predicate places. [2024-06-04 14:39:51,148 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 221 flow [2024-06-04 14:39:51,148 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 14:39:51,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:51,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:51,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 14:39:51,149 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:39:51,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:51,150 INFO L85 PathProgramCache]: Analyzing trace with hash 100731725, now seen corresponding path program 1 times [2024-06-04 14:39:51,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:51,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940012231] [2024-06-04 14:39:51,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:51,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:51,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:51,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:51,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:51,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940012231] [2024-06-04 14:39:51,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940012231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:51,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:51,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:39:51,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182263104] [2024-06-04 14:39:51,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:51,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:39:51,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:51,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:39:51,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:39:51,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:39:51,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 221 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:51,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:51,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:39:51,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:52,302 INFO L124 PetriNetUnfolderBase]: 1627/2537 cut-off events. [2024-06-04 14:39:52,302 INFO L125 PetriNetUnfolderBase]: For 4072/4072 co-relation queries the response was YES. [2024-06-04 14:39:52,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7446 conditions, 2537 events. 1627/2537 cut-off events. For 4072/4072 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 12718 event pairs, 689 based on Foata normal form. 2/2514 useless extension candidates. Maximal degree in co-relation 7426. Up to 2407 conditions per place. [2024-06-04 14:39:52,316 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 48 selfloop transitions, 8 changer transitions 0/62 dead transitions. [2024-06-04 14:39:52,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 377 flow [2024-06-04 14:39:52,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:39:52,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:39:52,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2024-06-04 14:39:52,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636363636363636 [2024-06-04 14:39:52,318 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 221 flow. Second operand 5 states and 102 transitions. [2024-06-04 14:39:52,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 377 flow [2024-06-04 14:39:52,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 338 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-04 14:39:52,325 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 228 flow [2024-06-04 14:39:52,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-06-04 14:39:52,328 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 11 predicate places. [2024-06-04 14:39:52,328 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 228 flow [2024-06-04 14:39:52,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:52,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:52,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:52,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 14:39:52,332 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 14:39:52,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:52,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1172282417, now seen corresponding path program 1 times [2024-06-04 14:39:52,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:52,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647811202] [2024-06-04 14:39:52,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:52,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:53,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:53,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:53,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647811202] [2024-06-04 14:39:53,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647811202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:53,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:53,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:39:53,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740015980] [2024-06-04 14:39:53,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:53,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:39:53,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:53,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:39:53,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:39:53,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:39:53,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 228 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 14:39:53,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:53,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:39:53,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:53,803 INFO L124 PetriNetUnfolderBase]: 1918/2985 cut-off events. [2024-06-04 14:39:53,804 INFO L125 PetriNetUnfolderBase]: For 6373/6373 co-relation queries the response was YES. [2024-06-04 14:39:53,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9219 conditions, 2985 events. 1918/2985 cut-off events. For 6373/6373 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14951 event pairs, 825 based on Foata normal form. 2/2986 useless extension candidates. Maximal degree in co-relation 9197. Up to 2819 conditions per place. [2024-06-04 14:39:53,829 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 53 selfloop transitions, 11 changer transitions 0/69 dead transitions. [2024-06-04 14:39:53,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 69 transitions, 414 flow [2024-06-04 14:39:53,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:39:53,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:39:53,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-04 14:39:53,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4356060606060606 [2024-06-04 14:39:53,830 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 228 flow. Second operand 6 states and 115 transitions. [2024-06-04 14:39:53,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 69 transitions, 414 flow [2024-06-04 14:39:53,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 69 transitions, 392 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-04 14:39:53,836 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 262 flow [2024-06-04 14:39:53,836 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 14:39:53,838 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 14 predicate places. [2024-06-04 14:39:53,838 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 262 flow [2024-06-04 14:39:53,838 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 14:39:53,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:53,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:53,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 14:39:53,839 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 14:39:53,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:53,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1986736980, now seen corresponding path program 1 times [2024-06-04 14:39:53,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:53,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475910984] [2024-06-04 14:39:53,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:53,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:54,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:54,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:54,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475910984] [2024-06-04 14:39:54,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475910984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:54,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:54,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:39:54,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685614261] [2024-06-04 14:39:54,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:54,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:39:54,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:54,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:39:54,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:39:54,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:39:54,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 262 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:54,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:54,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:39:54,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:55,371 INFO L124 PetriNetUnfolderBase]: 1814/2881 cut-off events. [2024-06-04 14:39:55,371 INFO L125 PetriNetUnfolderBase]: For 8708/8712 co-relation queries the response was YES. [2024-06-04 14:39:55,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9538 conditions, 2881 events. 1814/2881 cut-off events. For 8708/8712 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14891 event pairs, 746 based on Foata normal form. 6/2886 useless extension candidates. Maximal degree in co-relation 9515. Up to 2635 conditions per place. [2024-06-04 14:39:55,383 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 57 selfloop transitions, 16 changer transitions 0/80 dead transitions. [2024-06-04 14:39:55,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 80 transitions, 526 flow [2024-06-04 14:39:55,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:39:55,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:39:55,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-06-04 14:39:55,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810606060606061 [2024-06-04 14:39:55,385 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 262 flow. Second operand 6 states and 127 transitions. [2024-06-04 14:39:55,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 80 transitions, 526 flow [2024-06-04 14:39:55,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 80 transitions, 494 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-04 14:39:55,388 INFO L231 Difference]: Finished difference. Result has 61 places, 60 transitions, 320 flow [2024-06-04 14:39:55,388 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 14:39:55,389 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 16 predicate places. [2024-06-04 14:39:55,389 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 60 transitions, 320 flow [2024-06-04 14:39:55,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:55,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:55,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:55,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 14:39:55,390 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 14:39:55,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:55,390 INFO L85 PathProgramCache]: Analyzing trace with hash -720661950, now seen corresponding path program 2 times [2024-06-04 14:39:55,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:55,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743982183] [2024-06-04 14:39:55,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:55,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:56,159 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 14:39:56,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:56,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743982183] [2024-06-04 14:39:56,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743982183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:56,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:56,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:39:56,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13634465] [2024-06-04 14:39:56,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:56,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:39:56,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:56,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:39:56,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:39:56,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:39:56,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 60 transitions, 320 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:56,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:56,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:39:56,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:56,763 INFO L124 PetriNetUnfolderBase]: 1809/2873 cut-off events. [2024-06-04 14:39:56,763 INFO L125 PetriNetUnfolderBase]: For 11244/11244 co-relation queries the response was YES. [2024-06-04 14:39:56,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10149 conditions, 2873 events. 1809/2873 cut-off events. For 11244/11244 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14803 event pairs, 742 based on Foata normal form. 2/2874 useless extension candidates. Maximal degree in co-relation 10125. Up to 2654 conditions per place. [2024-06-04 14:39:56,777 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 57 selfloop transitions, 11 changer transitions 0/75 dead transitions. [2024-06-04 14:39:56,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 75 transitions, 494 flow [2024-06-04 14:39:56,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:39:56,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:39:56,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-06-04 14:39:56,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:39:56,781 INFO L175 Difference]: Start difference. First operand has 61 places, 60 transitions, 320 flow. Second operand 6 states and 120 transitions. [2024-06-04 14:39:56,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 75 transitions, 494 flow [2024-06-04 14:39:56,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 75 transitions, 456 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-04 14:39:56,788 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 312 flow [2024-06-04 14:39:56,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=312, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2024-06-04 14:39:56,790 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 20 predicate places. [2024-06-04 14:39:56,790 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 312 flow [2024-06-04 14:39:56,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:56,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:56,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:56,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 14:39:56,791 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 14:39:56,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:56,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1981015124, now seen corresponding path program 1 times [2024-06-04 14:39:56,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:56,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947570720] [2024-06-04 14:39:56,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:56,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:56,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:57,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:57,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:57,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947570720] [2024-06-04 14:39:57,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947570720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:57,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:57,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:39:57,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709883891] [2024-06-04 14:39:57,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:57,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:39:57,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:57,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:39:57,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:39:57,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:39:57,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 312 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 14:39:57,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:57,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:39:57,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:58,174 INFO L124 PetriNetUnfolderBase]: 1914/2960 cut-off events. [2024-06-04 14:39:58,174 INFO L125 PetriNetUnfolderBase]: For 12932/12932 co-relation queries the response was YES. [2024-06-04 14:39:58,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10593 conditions, 2960 events. 1914/2960 cut-off events. For 12932/12932 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14721 event pairs, 771 based on Foata normal form. 4/2963 useless extension candidates. Maximal degree in co-relation 10567. Up to 2796 conditions per place. [2024-06-04 14:39:58,188 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 64 selfloop transitions, 14 changer transitions 0/83 dead transitions. [2024-06-04 14:39:58,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 83 transitions, 544 flow [2024-06-04 14:39:58,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:39:58,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:39:58,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-04 14:39:58,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:39:58,192 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 312 flow. Second operand 7 states and 133 transitions. [2024-06-04 14:39:58,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 83 transitions, 544 flow [2024-06-04 14:39:58,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 83 transitions, 510 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-04 14:39:58,200 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 346 flow [2024-06-04 14:39:58,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=346, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2024-06-04 14:39:58,201 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 21 predicate places. [2024-06-04 14:39:58,201 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 346 flow [2024-06-04 14:39:58,201 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 14:39:58,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:58,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:58,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 14:39:58,201 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 14:39:58,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:58,202 INFO L85 PathProgramCache]: Analyzing trace with hash 2142135714, now seen corresponding path program 1 times [2024-06-04 14:39:58,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:58,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774371456] [2024-06-04 14:39:58,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:58,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:59,255 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 14:39:59,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:59,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774371456] [2024-06-04 14:39:59,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774371456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:59,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:59,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:39:59,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415860719] [2024-06-04 14:39:59,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:59,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:39:59,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:59,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:39:59,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:39:59,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:39:59,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 346 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:59,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:59,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:39:59,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:59,907 INFO L124 PetriNetUnfolderBase]: 1810/2860 cut-off events. [2024-06-04 14:39:59,908 INFO L125 PetriNetUnfolderBase]: For 15856/15856 co-relation queries the response was YES. [2024-06-04 14:39:59,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10887 conditions, 2860 events. 1810/2860 cut-off events. For 15856/15856 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 14650 event pairs, 703 based on Foata normal form. 2/2861 useless extension candidates. Maximal degree in co-relation 10861. Up to 2635 conditions per place. [2024-06-04 14:39:59,927 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 70 selfloop transitions, 14 changer transitions 0/91 dead transitions. [2024-06-04 14:39:59,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 91 transitions, 606 flow [2024-06-04 14:39:59,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:39:59,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:39:59,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-04 14:39:59,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4675324675324675 [2024-06-04 14:39:59,929 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 346 flow. Second operand 7 states and 144 transitions. [2024-06-04 14:39:59,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 91 transitions, 606 flow [2024-06-04 14:39:59,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 91 transitions, 562 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-04 14:39:59,937 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 372 flow [2024-06-04 14:39:59,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=372, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2024-06-04 14:39:59,938 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 23 predicate places. [2024-06-04 14:39:59,939 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 372 flow [2024-06-04 14:39:59,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:59,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:59,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:59,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 14:39:59,939 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 14:39:59,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:59,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1459302832, now seen corresponding path program 1 times [2024-06-04 14:39:59,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:59,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641879371] [2024-06-04 14:39:59,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:59,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:00,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:00,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:00,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641879371] [2024-06-04 14:40:00,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641879371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:00,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:00,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:40:00,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464274102] [2024-06-04 14:40:00,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:00,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:40:00,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:00,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:40:00,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:40:00,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:00,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 372 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 14:40:00,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:00,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:00,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:01,501 INFO L124 PetriNetUnfolderBase]: 1936/2991 cut-off events. [2024-06-04 14:40:01,501 INFO L125 PetriNetUnfolderBase]: For 19195/19199 co-relation queries the response was YES. [2024-06-04 14:40:01,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11925 conditions, 2991 events. 1936/2991 cut-off events. For 19195/19199 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 14872 event pairs, 758 based on Foata normal form. 3/2993 useless extension candidates. Maximal degree in co-relation 11898. Up to 2788 conditions per place. [2024-06-04 14:40:01,517 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 68 selfloop transitions, 23 changer transitions 0/96 dead transitions. [2024-06-04 14:40:01,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 96 transitions, 710 flow [2024-06-04 14:40:01,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:40:01,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:40:01,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-04 14:40:01,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577922077922078 [2024-06-04 14:40:01,519 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 372 flow. Second operand 7 states and 141 transitions. [2024-06-04 14:40:01,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 96 transitions, 710 flow [2024-06-04 14:40:01,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 96 transitions, 664 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-04 14:40:01,529 INFO L231 Difference]: Finished difference. Result has 70 places, 72 transitions, 442 flow [2024-06-04 14:40:01,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=442, PETRI_PLACES=70, PETRI_TRANSITIONS=72} [2024-06-04 14:40:01,530 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 25 predicate places. [2024-06-04 14:40:01,530 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 72 transitions, 442 flow [2024-06-04 14:40:01,530 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 14:40:01,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:01,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:01,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 14:40:01,530 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 14:40:01,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:01,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1465140576, now seen corresponding path program 2 times [2024-06-04 14:40:01,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:01,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275824718] [2024-06-04 14:40:01,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:01,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:02,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:02,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:02,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275824718] [2024-06-04 14:40:02,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275824718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:02,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:02,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:40:02,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485003015] [2024-06-04 14:40:02,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:02,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:40:02,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:02,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:40:02,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:40:02,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:40:02,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 442 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:02,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:02,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:40:02,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:03,117 INFO L124 PetriNetUnfolderBase]: 1838/2928 cut-off events. [2024-06-04 14:40:03,117 INFO L125 PetriNetUnfolderBase]: For 22617/22619 co-relation queries the response was YES. [2024-06-04 14:40:03,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12219 conditions, 2928 events. 1838/2928 cut-off events. For 22617/22619 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 15146 event pairs, 701 based on Foata normal form. 4/2931 useless extension candidates. Maximal degree in co-relation 12191. Up to 2620 conditions per place. [2024-06-04 14:40:03,132 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 67 selfloop transitions, 26 changer transitions 0/102 dead transitions. [2024-06-04 14:40:03,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 102 transitions, 804 flow [2024-06-04 14:40:03,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:40:03,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:40:03,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-06-04 14:40:03,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-06-04 14:40:03,134 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 442 flow. Second operand 7 states and 147 transitions. [2024-06-04 14:40:03,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 102 transitions, 804 flow [2024-06-04 14:40:03,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 102 transitions, 768 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-04 14:40:03,148 INFO L231 Difference]: Finished difference. Result has 74 places, 78 transitions, 544 flow [2024-06-04 14:40:03,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=544, PETRI_PLACES=74, PETRI_TRANSITIONS=78} [2024-06-04 14:40:03,149 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 29 predicate places. [2024-06-04 14:40:03,149 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 78 transitions, 544 flow [2024-06-04 14:40:03,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:03,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:03,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:03,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 14:40:03,150 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 14:40:03,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:03,150 INFO L85 PathProgramCache]: Analyzing trace with hash -899644306, now seen corresponding path program 2 times [2024-06-04 14:40:03,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:03,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023649075] [2024-06-04 14:40:03,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:03,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:04,040 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 14:40:04,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:04,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023649075] [2024-06-04 14:40:04,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023649075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:04,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:04,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:40:04,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083268351] [2024-06-04 14:40:04,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:04,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:40:04,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:04,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:40:04,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:40:04,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:04,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 78 transitions, 544 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 14:40:04,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:04,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:04,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:04,619 INFO L124 PetriNetUnfolderBase]: 1958/3052 cut-off events. [2024-06-04 14:40:04,619 INFO L125 PetriNetUnfolderBase]: For 27118/27118 co-relation queries the response was YES. [2024-06-04 14:40:04,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13437 conditions, 3052 events. 1958/3052 cut-off events. For 27118/27118 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 15320 event pairs, 750 based on Foata normal form. 2/3053 useless extension candidates. Maximal degree in co-relation 13407. Up to 2849 conditions per place. [2024-06-04 14:40:04,634 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 78 selfloop transitions, 19 changer transitions 0/102 dead transitions. [2024-06-04 14:40:04,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 102 transitions, 872 flow [2024-06-04 14:40:04,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:40:04,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:40:04,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-04 14:40:04,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-06-04 14:40:04,635 INFO L175 Difference]: Start difference. First operand has 74 places, 78 transitions, 544 flow. Second operand 7 states and 136 transitions. [2024-06-04 14:40:04,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 102 transitions, 872 flow [2024-06-04 14:40:04,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 102 transitions, 826 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-04 14:40:04,651 INFO L231 Difference]: Finished difference. Result has 78 places, 81 transitions, 578 flow [2024-06-04 14:40:04,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=578, PETRI_PLACES=78, PETRI_TRANSITIONS=81} [2024-06-04 14:40:04,651 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 33 predicate places. [2024-06-04 14:40:04,652 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 81 transitions, 578 flow [2024-06-04 14:40:04,652 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 14:40:04,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:04,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:04,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 14:40:04,652 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 14:40:04,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:04,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1281934162, now seen corresponding path program 3 times [2024-06-04 14:40:04,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:04,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974870307] [2024-06-04 14:40:04,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:04,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:05,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:05,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:05,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974870307] [2024-06-04 14:40:05,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974870307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:05,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:05,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:40:05,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318247860] [2024-06-04 14:40:05,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:05,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:40:05,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:05,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:40:05,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:40:05,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:05,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 81 transitions, 578 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 14:40:05,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:05,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:05,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:06,090 INFO L124 PetriNetUnfolderBase]: 1953/3045 cut-off events. [2024-06-04 14:40:06,090 INFO L125 PetriNetUnfolderBase]: For 30143/30143 co-relation queries the response was YES. [2024-06-04 14:40:06,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13680 conditions, 3045 events. 1953/3045 cut-off events. For 30143/30143 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 15302 event pairs, 750 based on Foata normal form. 2/3046 useless extension candidates. Maximal degree in co-relation 13648. Up to 2862 conditions per place. [2024-06-04 14:40:06,108 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 81 selfloop transitions, 14 changer transitions 0/100 dead transitions. [2024-06-04 14:40:06,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 100 transitions, 816 flow [2024-06-04 14:40:06,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:40:06,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:40:06,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-04 14:40:06,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-04 14:40:06,110 INFO L175 Difference]: Start difference. First operand has 78 places, 81 transitions, 578 flow. Second operand 7 states and 132 transitions. [2024-06-04 14:40:06,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 100 transitions, 816 flow [2024-06-04 14:40:06,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 100 transitions, 736 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-04 14:40:06,129 INFO L231 Difference]: Finished difference. Result has 80 places, 81 transitions, 534 flow [2024-06-04 14:40:06,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=534, PETRI_PLACES=80, PETRI_TRANSITIONS=81} [2024-06-04 14:40:06,130 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 35 predicate places. [2024-06-04 14:40:06,130 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 81 transitions, 534 flow [2024-06-04 14:40:06,130 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 14:40:06,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:06,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:06,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 14:40:06,130 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 14:40:06,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:06,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1282171498, now seen corresponding path program 3 times [2024-06-04 14:40:06,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:06,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971110863] [2024-06-04 14:40:06,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:06,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:07,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:07,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:07,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971110863] [2024-06-04 14:40:07,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971110863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:07,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:07,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:40:07,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631822653] [2024-06-04 14:40:07,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:07,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:40:07,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:07,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:40:07,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:40:07,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:40:07,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 81 transitions, 534 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:07,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:07,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:40:07,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:07,616 INFO L124 PetriNetUnfolderBase]: 1839/2929 cut-off events. [2024-06-04 14:40:07,616 INFO L125 PetriNetUnfolderBase]: For 33301/33301 co-relation queries the response was YES. [2024-06-04 14:40:07,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13367 conditions, 2929 events. 1839/2929 cut-off events. For 33301/33301 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 15160 event pairs, 697 based on Foata normal form. 2/2930 useless extension candidates. Maximal degree in co-relation 13334. Up to 2678 conditions per place. [2024-06-04 14:40:07,630 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 76 selfloop transitions, 14 changer transitions 0/100 dead transitions. [2024-06-04 14:40:07,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 100 transitions, 762 flow [2024-06-04 14:40:07,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:40:07,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:40:07,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-04 14:40:07,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44805194805194803 [2024-06-04 14:40:07,631 INFO L175 Difference]: Start difference. First operand has 80 places, 81 transitions, 534 flow. Second operand 7 states and 138 transitions. [2024-06-04 14:40:07,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 100 transitions, 762 flow [2024-06-04 14:40:07,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 100 transitions, 706 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-04 14:40:07,654 INFO L231 Difference]: Finished difference. Result has 81 places, 81 transitions, 514 flow [2024-06-04 14:40:07,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=514, PETRI_PLACES=81, PETRI_TRANSITIONS=81} [2024-06-04 14:40:07,655 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 36 predicate places. [2024-06-04 14:40:07,655 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 81 transitions, 514 flow [2024-06-04 14:40:07,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:07,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:07,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:07,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 14:40:07,656 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 14:40:07,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:07,656 INFO L85 PathProgramCache]: Analyzing trace with hash 2140945307, now seen corresponding path program 1 times [2024-06-04 14:40:07,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:07,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751534438] [2024-06-04 14:40:07,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:07,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:08,339 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 14:40:08,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:08,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751534438] [2024-06-04 14:40:08,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751534438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:08,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:08,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:40:08,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331803026] [2024-06-04 14:40:08,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:08,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:40:08,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:08,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:40:08,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:40:08,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:08,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 81 transitions, 514 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 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 14:40:08,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:08,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:08,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:08,932 INFO L124 PetriNetUnfolderBase]: 2285/3505 cut-off events. [2024-06-04 14:40:08,932 INFO L125 PetriNetUnfolderBase]: For 48129/48129 co-relation queries the response was YES. [2024-06-04 14:40:08,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16606 conditions, 3505 events. 2285/3505 cut-off events. For 48129/48129 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 17499 event pairs, 997 based on Foata normal form. 1/3505 useless extension candidates. Maximal degree in co-relation 16572. Up to 3360 conditions per place. [2024-06-04 14:40:08,952 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 69 selfloop transitions, 8 changer transitions 0/92 dead transitions. [2024-06-04 14:40:08,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 92 transitions, 710 flow [2024-06-04 14:40:08,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:40:08,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:40:08,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-06-04 14:40:08,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42727272727272725 [2024-06-04 14:40:08,954 INFO L175 Difference]: Start difference. First operand has 81 places, 81 transitions, 514 flow. Second operand 5 states and 94 transitions. [2024-06-04 14:40:08,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 92 transitions, 710 flow [2024-06-04 14:40:08,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 92 transitions, 664 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-04 14:40:08,980 INFO L231 Difference]: Finished difference. Result has 80 places, 84 transitions, 518 flow [2024-06-04 14:40:08,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=518, PETRI_PLACES=80, PETRI_TRANSITIONS=84} [2024-06-04 14:40:08,981 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 35 predicate places. [2024-06-04 14:40:08,981 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 84 transitions, 518 flow [2024-06-04 14:40:08,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 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 14:40:08,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:08,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:08,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 14:40:08,981 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 14:40:08,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:08,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1821474369, now seen corresponding path program 1 times [2024-06-04 14:40:08,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:08,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603003610] [2024-06-04 14:40:08,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:08,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:10,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:10,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:10,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603003610] [2024-06-04 14:40:10,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603003610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:10,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:10,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:10,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813932751] [2024-06-04 14:40:10,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:10,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:10,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:10,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:10,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:10,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:40:10,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 84 transitions, 518 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:10,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:10,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:40:10,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:11,113 INFO L124 PetriNetUnfolderBase]: 1960/3074 cut-off events. [2024-06-04 14:40:11,113 INFO L125 PetriNetUnfolderBase]: For 47872/47872 co-relation queries the response was YES. [2024-06-04 14:40:11,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15429 conditions, 3074 events. 1960/3074 cut-off events. For 47872/47872 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 15817 event pairs, 722 based on Foata normal form. 2/3075 useless extension candidates. Maximal degree in co-relation 15394. Up to 2762 conditions per place. [2024-06-04 14:40:11,131 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 94 selfloop transitions, 23 changer transitions 0/128 dead transitions. [2024-06-04 14:40:11,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 128 transitions, 986 flow [2024-06-04 14:40:11,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:40:11,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:40:11,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 186 transitions. [2024-06-04 14:40:11,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-06-04 14:40:11,134 INFO L175 Difference]: Start difference. First operand has 80 places, 84 transitions, 518 flow. Second operand 9 states and 186 transitions. [2024-06-04 14:40:11,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 128 transitions, 986 flow [2024-06-04 14:40:11,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 128 transitions, 958 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-04 14:40:11,157 INFO L231 Difference]: Finished difference. Result has 86 places, 90 transitions, 626 flow [2024-06-04 14:40:11,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=626, PETRI_PLACES=86, PETRI_TRANSITIONS=90} [2024-06-04 14:40:11,158 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 41 predicate places. [2024-06-04 14:40:11,158 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 90 transitions, 626 flow [2024-06-04 14:40:11,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:11,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:11,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:11,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 14:40:11,159 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 14:40:11,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:11,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1981698943, now seen corresponding path program 2 times [2024-06-04 14:40:11,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:11,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468353924] [2024-06-04 14:40:11,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:11,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:12,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:12,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:12,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468353924] [2024-06-04 14:40:12,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468353924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:12,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:12,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:12,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967858217] [2024-06-04 14:40:12,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:12,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:12,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:12,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:12,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:12,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:40:12,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 90 transitions, 626 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:12,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:12,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:40:12,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:13,179 INFO L124 PetriNetUnfolderBase]: 1955/3067 cut-off events. [2024-06-04 14:40:13,179 INFO L125 PetriNetUnfolderBase]: For 54015/54015 co-relation queries the response was YES. [2024-06-04 14:40:13,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16092 conditions, 3067 events. 1955/3067 cut-off events. For 54015/54015 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 15744 event pairs, 722 based on Foata normal form. 2/3068 useless extension candidates. Maximal degree in co-relation 16056. Up to 2781 conditions per place. [2024-06-04 14:40:13,197 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 91 selfloop transitions, 17 changer transitions 0/119 dead transitions. [2024-06-04 14:40:13,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 119 transitions, 916 flow [2024-06-04 14:40:13,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:13,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:13,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-04 14:40:13,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2024-06-04 14:40:13,199 INFO L175 Difference]: Start difference. First operand has 86 places, 90 transitions, 626 flow. Second operand 8 states and 162 transitions. [2024-06-04 14:40:13,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 119 transitions, 916 flow [2024-06-04 14:40:13,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 119 transitions, 838 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-04 14:40:13,231 INFO L231 Difference]: Finished difference. Result has 89 places, 90 transitions, 590 flow [2024-06-04 14:40:13,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=590, PETRI_PLACES=89, PETRI_TRANSITIONS=90} [2024-06-04 14:40:13,231 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 44 predicate places. [2024-06-04 14:40:13,231 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 90 transitions, 590 flow [2024-06-04 14:40:13,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:13,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:13,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:13,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 14:40:13,232 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 14:40:13,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:13,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1821564734, now seen corresponding path program 1 times [2024-06-04 14:40:13,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:13,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166855300] [2024-06-04 14:40:13,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:13,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:13,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:14,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:14,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:14,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166855300] [2024-06-04 14:40:14,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166855300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:14,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:14,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:14,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235019934] [2024-06-04 14:40:14,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:14,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:14,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:14,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:14,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:14,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:14,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 90 transitions, 590 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 14:40:14,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:14,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:14,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:14,949 INFO L124 PetriNetUnfolderBase]: 2077/3194 cut-off events. [2024-06-04 14:40:14,950 INFO L125 PetriNetUnfolderBase]: For 59434/59434 co-relation queries the response was YES. [2024-06-04 14:40:14,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16933 conditions, 3194 events. 2077/3194 cut-off events. For 59434/59434 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 16000 event pairs, 757 based on Foata normal form. 2/3195 useless extension candidates. Maximal degree in co-relation 16895. Up to 2978 conditions per place. [2024-06-04 14:40:14,967 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 99 selfloop transitions, 17 changer transitions 0/122 dead transitions. [2024-06-04 14:40:14,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 122 transitions, 936 flow [2024-06-04 14:40:14,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:14,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:14,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-04 14:40:14,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-04 14:40:14,970 INFO L175 Difference]: Start difference. First operand has 89 places, 90 transitions, 590 flow. Second operand 8 states and 155 transitions. [2024-06-04 14:40:14,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 122 transitions, 936 flow [2024-06-04 14:40:15,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 122 transitions, 894 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-04 14:40:15,010 INFO L231 Difference]: Finished difference. Result has 90 places, 93 transitions, 636 flow [2024-06-04 14:40:15,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=636, PETRI_PLACES=90, PETRI_TRANSITIONS=93} [2024-06-04 14:40:15,010 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 45 predicate places. [2024-06-04 14:40:15,010 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 93 transitions, 636 flow [2024-06-04 14:40:15,011 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 14:40:15,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:15,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:15,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 14:40:15,011 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 14:40:15,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:15,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1825289384, now seen corresponding path program 2 times [2024-06-04 14:40:15,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:15,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489584522] [2024-06-04 14:40:15,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:15,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:16,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:16,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:16,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489584522] [2024-06-04 14:40:16,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489584522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:16,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:16,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:16,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81368703] [2024-06-04 14:40:16,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:16,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:16,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:16,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:16,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:16,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:16,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 93 transitions, 636 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 14:40:16,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:16,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:16,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:16,701 INFO L124 PetriNetUnfolderBase]: 2104/3234 cut-off events. [2024-06-04 14:40:16,701 INFO L125 PetriNetUnfolderBase]: For 66773/66775 co-relation queries the response was YES. [2024-06-04 14:40:16,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17860 conditions, 3234 events. 2104/3234 cut-off events. For 66773/66775 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 16172 event pairs, 765 based on Foata normal form. 2/3235 useless extension candidates. Maximal degree in co-relation 17821. Up to 2895 conditions per place. [2024-06-04 14:40:16,719 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 82 selfloop transitions, 44 changer transitions 0/132 dead transitions. [2024-06-04 14:40:16,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 132 transitions, 1248 flow [2024-06-04 14:40:16,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:16,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:16,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-04 14:40:16,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630681818181818 [2024-06-04 14:40:16,722 INFO L175 Difference]: Start difference. First operand has 90 places, 93 transitions, 636 flow. Second operand 8 states and 163 transitions. [2024-06-04 14:40:16,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 132 transitions, 1248 flow [2024-06-04 14:40:16,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 132 transitions, 1184 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-04 14:40:16,761 INFO L231 Difference]: Finished difference. Result has 92 places, 102 transitions, 812 flow [2024-06-04 14:40:16,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=812, PETRI_PLACES=92, PETRI_TRANSITIONS=102} [2024-06-04 14:40:16,761 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 47 predicate places. [2024-06-04 14:40:16,761 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 102 transitions, 812 flow [2024-06-04 14:40:16,762 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 14:40:16,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:16,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:16,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 14:40:16,762 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 14:40:16,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:16,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1825289601, now seen corresponding path program 1 times [2024-06-04 14:40:16,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:16,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998306218] [2024-06-04 14:40:16,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:16,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:17,764 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 14:40:17,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:17,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998306218] [2024-06-04 14:40:17,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998306218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:17,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:17,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:17,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153954045] [2024-06-04 14:40:17,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:17,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:17,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:17,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:17,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:17,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:17,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 102 transitions, 812 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 14:40:17,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:17,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:17,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:18,370 INFO L124 PetriNetUnfolderBase]: 2146/3298 cut-off events. [2024-06-04 14:40:18,370 INFO L125 PetriNetUnfolderBase]: For 75938/75940 co-relation queries the response was YES. [2024-06-04 14:40:18,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18897 conditions, 3298 events. 2146/3298 cut-off events. For 75938/75940 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 16536 event pairs, 719 based on Foata normal form. 4/3301 useless extension candidates. Maximal degree in co-relation 18857. Up to 2985 conditions per place. [2024-06-04 14:40:18,389 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 103 selfloop transitions, 32 changer transitions 0/141 dead transitions. [2024-06-04 14:40:18,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 141 transitions, 1324 flow [2024-06-04 14:40:18,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:18,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:18,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-04 14:40:18,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2024-06-04 14:40:18,391 INFO L175 Difference]: Start difference. First operand has 92 places, 102 transitions, 812 flow. Second operand 8 states and 162 transitions. [2024-06-04 14:40:18,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 141 transitions, 1324 flow [2024-06-04 14:40:18,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 141 transitions, 1256 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-04 14:40:18,427 INFO L231 Difference]: Finished difference. Result has 98 places, 111 transitions, 928 flow [2024-06-04 14:40:18,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=928, PETRI_PLACES=98, PETRI_TRANSITIONS=111} [2024-06-04 14:40:18,427 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 53 predicate places. [2024-06-04 14:40:18,428 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 111 transitions, 928 flow [2024-06-04 14:40:18,428 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 14:40:18,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:18,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:18,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 14:40:18,428 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 14:40:18,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:18,429 INFO L85 PathProgramCache]: Analyzing trace with hash 2006247947, now seen corresponding path program 3 times [2024-06-04 14:40:18,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:18,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080677107] [2024-06-04 14:40:18,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:18,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:19,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:19,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:19,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080677107] [2024-06-04 14:40:19,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080677107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:19,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:19,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:19,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998669690] [2024-06-04 14:40:19,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:19,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:19,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:19,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:19,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:19,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:40:19,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 111 transitions, 928 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:19,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:19,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:40:19,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:20,249 INFO L124 PetriNetUnfolderBase]: 2050/3207 cut-off events. [2024-06-04 14:40:20,249 INFO L125 PetriNetUnfolderBase]: For 83018/83020 co-relation queries the response was YES. [2024-06-04 14:40:20,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19297 conditions, 3207 events. 2050/3207 cut-off events. For 83018/83020 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 16471 event pairs, 686 based on Foata normal form. 4/3210 useless extension candidates. Maximal degree in co-relation 19254. Up to 2851 conditions per place. [2024-06-04 14:40:20,270 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 96 selfloop transitions, 29 changer transitions 0/140 dead transitions. [2024-06-04 14:40:20,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 140 transitions, 1294 flow [2024-06-04 14:40:20,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:20,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:20,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-04 14:40:20,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630681818181818 [2024-06-04 14:40:20,272 INFO L175 Difference]: Start difference. First operand has 98 places, 111 transitions, 928 flow. Second operand 8 states and 163 transitions. [2024-06-04 14:40:20,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 140 transitions, 1294 flow [2024-06-04 14:40:20,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 140 transitions, 1250 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-04 14:40:20,319 INFO L231 Difference]: Finished difference. Result has 103 places, 114 transitions, 1006 flow [2024-06-04 14:40:20,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1006, PETRI_PLACES=103, PETRI_TRANSITIONS=114} [2024-06-04 14:40:20,320 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 58 predicate places. [2024-06-04 14:40:20,320 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 114 transitions, 1006 flow [2024-06-04 14:40:20,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:20,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:20,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:20,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 14:40:20,321 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 14:40:20,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:20,321 INFO L85 PathProgramCache]: Analyzing trace with hash 2006248102, now seen corresponding path program 3 times [2024-06-04 14:40:20,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:20,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588091159] [2024-06-04 14:40:20,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:20,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:21,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:21,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:21,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588091159] [2024-06-04 14:40:21,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588091159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:21,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:21,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:21,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113334905] [2024-06-04 14:40:21,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:21,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:21,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:21,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:21,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:21,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:21,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 114 transitions, 1006 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 14:40:21,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:21,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:21,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:22,201 INFO L124 PetriNetUnfolderBase]: 2152/3307 cut-off events. [2024-06-04 14:40:22,201 INFO L125 PetriNetUnfolderBase]: For 90885/90887 co-relation queries the response was YES. [2024-06-04 14:40:22,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20509 conditions, 3307 events. 2152/3307 cut-off events. For 90885/90887 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 16554 event pairs, 731 based on Foata normal form. 2/3308 useless extension candidates. Maximal degree in co-relation 20463. Up to 2965 conditions per place. [2024-06-04 14:40:22,222 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 93 selfloop transitions, 43 changer transitions 0/142 dead transitions. [2024-06-04 14:40:22,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 142 transitions, 1434 flow [2024-06-04 14:40:22,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:22,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:22,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-04 14:40:22,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2024-06-04 14:40:22,225 INFO L175 Difference]: Start difference. First operand has 103 places, 114 transitions, 1006 flow. Second operand 8 states and 162 transitions. [2024-06-04 14:40:22,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 142 transitions, 1434 flow [2024-06-04 14:40:22,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 142 transitions, 1314 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-04 14:40:22,287 INFO L231 Difference]: Finished difference. Result has 105 places, 114 transitions, 980 flow [2024-06-04 14:40:22,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=980, PETRI_PLACES=105, PETRI_TRANSITIONS=114} [2024-06-04 14:40:22,287 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 60 predicate places. [2024-06-04 14:40:22,287 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 114 transitions, 980 flow [2024-06-04 14:40:22,287 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 14:40:22,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:22,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:22,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 14:40:22,288 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 14:40:22,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:22,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1066354335, now seen corresponding path program 2 times [2024-06-04 14:40:22,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:22,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314945818] [2024-06-04 14:40:22,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:22,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:23,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:23,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:23,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314945818] [2024-06-04 14:40:23,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314945818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:23,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:23,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:23,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583915903] [2024-06-04 14:40:23,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:23,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:23,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:23,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:23,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:23,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:23,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 114 transitions, 980 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 14:40:23,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:23,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:23,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:24,029 INFO L124 PetriNetUnfolderBase]: 2174/3343 cut-off events. [2024-06-04 14:40:24,030 INFO L125 PetriNetUnfolderBase]: For 98456/98456 co-relation queries the response was YES. [2024-06-04 14:40:24,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20973 conditions, 3343 events. 2174/3343 cut-off events. For 98456/98456 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 16758 event pairs, 723 based on Foata normal form. 4/3346 useless extension candidates. Maximal degree in co-relation 20926. Up to 3064 conditions per place. [2024-06-04 14:40:24,052 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 112 selfloop transitions, 26 changer transitions 0/144 dead transitions. [2024-06-04 14:40:24,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 144 transitions, 1462 flow [2024-06-04 14:40:24,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:24,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:24,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-04 14:40:24,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460227272727273 [2024-06-04 14:40:24,054 INFO L175 Difference]: Start difference. First operand has 105 places, 114 transitions, 980 flow. Second operand 8 states and 157 transitions. [2024-06-04 14:40:24,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 144 transitions, 1462 flow [2024-06-04 14:40:24,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 144 transitions, 1358 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-04 14:40:24,124 INFO L231 Difference]: Finished difference. Result has 106 places, 117 transitions, 982 flow [2024-06-04 14:40:24,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=982, PETRI_PLACES=106, PETRI_TRANSITIONS=117} [2024-06-04 14:40:24,124 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 61 predicate places. [2024-06-04 14:40:24,124 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 117 transitions, 982 flow [2024-06-04 14:40:24,124 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 14:40:24,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:24,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:24,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 14:40:24,125 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 14:40:24,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:24,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1092603790, now seen corresponding path program 4 times [2024-06-04 14:40:24,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:24,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665001519] [2024-06-04 14:40:24,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:24,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:25,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:25,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:25,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665001519] [2024-06-04 14:40:25,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665001519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:25,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:25,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:25,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406289738] [2024-06-04 14:40:25,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:25,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:25,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:25,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:25,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:25,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:25,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 117 transitions, 982 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 14:40:25,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:25,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:25,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:25,730 INFO L124 PetriNetUnfolderBase]: 2201/3382 cut-off events. [2024-06-04 14:40:25,731 INFO L125 PetriNetUnfolderBase]: For 106203/106203 co-relation queries the response was YES. [2024-06-04 14:40:25,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21535 conditions, 3382 events. 2201/3382 cut-off events. For 106203/106203 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 16989 event pairs, 723 based on Foata normal form. 2/3383 useless extension candidates. Maximal degree in co-relation 21487. Up to 3119 conditions per place. [2024-06-04 14:40:25,755 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 115 selfloop transitions, 29 changer transitions 0/150 dead transitions. [2024-06-04 14:40:25,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 150 transitions, 1628 flow [2024-06-04 14:40:25,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:25,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:25,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-04 14:40:25,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460227272727273 [2024-06-04 14:40:25,757 INFO L175 Difference]: Start difference. First operand has 106 places, 117 transitions, 982 flow. Second operand 8 states and 157 transitions. [2024-06-04 14:40:25,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 150 transitions, 1628 flow [2024-06-04 14:40:25,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 150 transitions, 1534 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-04 14:40:25,827 INFO L231 Difference]: Finished difference. Result has 108 places, 123 transitions, 1058 flow [2024-06-04 14:40:25,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1058, PETRI_PLACES=108, PETRI_TRANSITIONS=123} [2024-06-04 14:40:25,829 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 63 predicate places. [2024-06-04 14:40:25,829 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 123 transitions, 1058 flow [2024-06-04 14:40:25,829 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 14:40:25,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:25,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:25,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 14:40:25,830 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 14:40:25,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:25,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1092609525, now seen corresponding path program 4 times [2024-06-04 14:40:25,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:25,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319038294] [2024-06-04 14:40:25,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:25,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:26,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:26,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:26,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319038294] [2024-06-04 14:40:26,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319038294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:26,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:26,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:26,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975472169] [2024-06-04 14:40:26,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:26,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:26,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:26,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:26,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:27,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:40:27,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 123 transitions, 1058 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:27,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:27,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:40:27,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:27,727 INFO L124 PetriNetUnfolderBase]: 2085/3264 cut-off events. [2024-06-04 14:40:27,727 INFO L125 PetriNetUnfolderBase]: For 112143/112143 co-relation queries the response was YES. [2024-06-04 14:40:27,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21050 conditions, 3264 events. 2085/3264 cut-off events. For 112143/112143 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 16817 event pairs, 682 based on Foata normal form. 2/3265 useless extension candidates. Maximal degree in co-relation 21002. Up to 2951 conditions per place. [2024-06-04 14:40:27,746 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 115 selfloop transitions, 17 changer transitions 0/149 dead transitions. [2024-06-04 14:40:27,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 149 transitions, 1436 flow [2024-06-04 14:40:27,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:27,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:27,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-04 14:40:27,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-04 14:40:27,747 INFO L175 Difference]: Start difference. First operand has 108 places, 123 transitions, 1058 flow. Second operand 8 states and 156 transitions. [2024-06-04 14:40:27,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 149 transitions, 1436 flow [2024-06-04 14:40:27,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 149 transitions, 1328 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-04 14:40:27,808 INFO L231 Difference]: Finished difference. Result has 111 places, 126 transitions, 1054 flow [2024-06-04 14:40:27,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=950, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1054, PETRI_PLACES=111, PETRI_TRANSITIONS=126} [2024-06-04 14:40:27,809 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 66 predicate places. [2024-06-04 14:40:27,809 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 126 transitions, 1054 flow [2024-06-04 14:40:27,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:27,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:27,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:27,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 14:40:27,810 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 14:40:27,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:27,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1969174334, now seen corresponding path program 5 times [2024-06-04 14:40:27,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:27,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431464415] [2024-06-04 14:40:27,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:27,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:28,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:28,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:28,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431464415] [2024-06-04 14:40:28,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431464415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:28,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:28,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:28,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29587402] [2024-06-04 14:40:28,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:28,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:28,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:28,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:28,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:28,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:28,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 126 transitions, 1054 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 14:40:28,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:28,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:28,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:29,495 INFO L124 PetriNetUnfolderBase]: 2191/3368 cut-off events. [2024-06-04 14:40:29,495 INFO L125 PetriNetUnfolderBase]: For 120453/120453 co-relation queries the response was YES. [2024-06-04 14:40:29,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22110 conditions, 3368 events. 2191/3368 cut-off events. For 120453/120453 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 16885 event pairs, 723 based on Foata normal form. 2/3369 useless extension candidates. Maximal degree in co-relation 22061. Up to 3107 conditions per place. [2024-06-04 14:40:29,518 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 115 selfloop transitions, 30 changer transitions 0/151 dead transitions. [2024-06-04 14:40:29,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 151 transitions, 1508 flow [2024-06-04 14:40:29,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:29,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:29,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-04 14:40:29,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-04 14:40:29,520 INFO L175 Difference]: Start difference. First operand has 111 places, 126 transitions, 1054 flow. Second operand 8 states and 154 transitions. [2024-06-04 14:40:29,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 151 transitions, 1508 flow [2024-06-04 14:40:29,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 151 transitions, 1400 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-04 14:40:29,604 INFO L231 Difference]: Finished difference. Result has 113 places, 126 transitions, 1014 flow [2024-06-04 14:40:29,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=946, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1014, PETRI_PLACES=113, PETRI_TRANSITIONS=126} [2024-06-04 14:40:29,605 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 68 predicate places. [2024-06-04 14:40:29,605 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 126 transitions, 1014 flow [2024-06-04 14:40:29,605 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 14:40:29,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:29,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:29,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 14:40:29,606 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:40:29,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:29,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1085251923, now seen corresponding path program 3 times [2024-06-04 14:40:29,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:29,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839823249] [2024-06-04 14:40:29,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:29,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:30,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:30,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:30,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839823249] [2024-06-04 14:40:30,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839823249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:30,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:30,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:30,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328140544] [2024-06-04 14:40:30,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:30,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:30,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:30,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:30,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:30,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:30,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 126 transitions, 1014 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 14:40:30,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:30,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:30,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:31,228 INFO L124 PetriNetUnfolderBase]: 2213/3400 cut-off events. [2024-06-04 14:40:31,228 INFO L125 PetriNetUnfolderBase]: For 129223/129223 co-relation queries the response was YES. [2024-06-04 14:40:31,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22541 conditions, 3400 events. 2213/3400 cut-off events. For 129223/129223 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 17067 event pairs, 723 based on Foata normal form. 4/3403 useless extension candidates. Maximal degree in co-relation 22491. Up to 3144 conditions per place. [2024-06-04 14:40:31,251 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 128 selfloop transitions, 22 changer transitions 0/156 dead transitions. [2024-06-04 14:40:31,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 156 transitions, 1534 flow [2024-06-04 14:40:31,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:31,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:31,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-04 14:40:31,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-04 14:40:31,253 INFO L175 Difference]: Start difference. First operand has 113 places, 126 transitions, 1014 flow. Second operand 8 states and 155 transitions. [2024-06-04 14:40:31,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 156 transitions, 1534 flow [2024-06-04 14:40:31,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 156 transitions, 1472 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-04 14:40:31,316 INFO L231 Difference]: Finished difference. Result has 115 places, 129 transitions, 1048 flow [2024-06-04 14:40:31,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=952, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1048, PETRI_PLACES=115, PETRI_TRANSITIONS=129} [2024-06-04 14:40:31,316 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 70 predicate places. [2024-06-04 14:40:31,317 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 129 transitions, 1048 flow [2024-06-04 14:40:31,317 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 14:40:31,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:31,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:31,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 14:40:31,317 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 14:40:31,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:31,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1084985013, now seen corresponding path program 4 times [2024-06-04 14:40:31,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:31,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925343732] [2024-06-04 14:40:31,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:31,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:32,052 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 14:40:32,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:32,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925343732] [2024-06-04 14:40:32,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925343732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:32,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:32,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:32,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825386354] [2024-06-04 14:40:32,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:32,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:32,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:32,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:32,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:32,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:32,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 129 transitions, 1048 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 14:40:32,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:32,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:32,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:32,835 INFO L124 PetriNetUnfolderBase]: 2203/3386 cut-off events. [2024-06-04 14:40:32,836 INFO L125 PetriNetUnfolderBase]: For 136105/136105 co-relation queries the response was YES. [2024-06-04 14:40:32,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22654 conditions, 3386 events. 2203/3386 cut-off events. For 136105/136105 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 17016 event pairs, 721 based on Foata normal form. 4/3389 useless extension candidates. Maximal degree in co-relation 22603. Up to 3163 conditions per place. [2024-06-04 14:40:32,858 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 130 selfloop transitions, 17 changer transitions 0/153 dead transitions. [2024-06-04 14:40:32,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 153 transitions, 1404 flow [2024-06-04 14:40:32,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:32,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:32,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-04 14:40:32,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-04 14:40:32,859 INFO L175 Difference]: Start difference. First operand has 115 places, 129 transitions, 1048 flow. Second operand 8 states and 150 transitions. [2024-06-04 14:40:32,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 153 transitions, 1404 flow [2024-06-04 14:40:32,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 153 transitions, 1298 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-04 14:40:32,954 INFO L231 Difference]: Finished difference. Result has 117 places, 129 transitions, 984 flow [2024-06-04 14:40:32,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=984, PETRI_PLACES=117, PETRI_TRANSITIONS=129} [2024-06-04 14:40:32,955 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 72 predicate places. [2024-06-04 14:40:32,955 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 129 transitions, 984 flow [2024-06-04 14:40:32,955 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 14:40:32,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:32,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:32,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 14:40:32,955 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 14:40:32,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:32,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1085252140, now seen corresponding path program 6 times [2024-06-04 14:40:32,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:32,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31437071] [2024-06-04 14:40:32,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:32,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:33,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:33,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:33,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31437071] [2024-06-04 14:40:33,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31437071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:33,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:33,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:33,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172141609] [2024-06-04 14:40:33,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:33,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:33,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:33,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:33,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:33,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:33,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 129 transitions, 984 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 14:40:33,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:33,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:33,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:34,567 INFO L124 PetriNetUnfolderBase]: 2198/3379 cut-off events. [2024-06-04 14:40:34,568 INFO L125 PetriNetUnfolderBase]: For 142139/142139 co-relation queries the response was YES. [2024-06-04 14:40:34,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22719 conditions, 3379 events. 2198/3379 cut-off events. For 142139/142139 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 16997 event pairs, 721 based on Foata normal form. 2/3380 useless extension candidates. Maximal degree in co-relation 22667. Up to 3165 conditions per place. [2024-06-04 14:40:34,588 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 129 selfloop transitions, 17 changer transitions 0/152 dead transitions. [2024-06-04 14:40:34,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 152 transitions, 1334 flow [2024-06-04 14:40:34,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:34,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:34,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-04 14:40:34,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42329545454545453 [2024-06-04 14:40:34,590 INFO L175 Difference]: Start difference. First operand has 117 places, 129 transitions, 984 flow. Second operand 8 states and 149 transitions. [2024-06-04 14:40:34,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 152 transitions, 1334 flow [2024-06-04 14:40:34,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 152 transitions, 1260 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-04 14:40:34,683 INFO L231 Difference]: Finished difference. Result has 118 places, 129 transitions, 952 flow [2024-06-04 14:40:34,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=952, PETRI_PLACES=118, PETRI_TRANSITIONS=129} [2024-06-04 14:40:34,684 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 73 predicate places. [2024-06-04 14:40:34,684 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 129 transitions, 952 flow [2024-06-04 14:40:34,684 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 14:40:34,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:34,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:34,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 14:40:34,685 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:40:34,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:34,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1944796159, now seen corresponding path program 1 times [2024-06-04 14:40:34,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:34,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438566664] [2024-06-04 14:40:34,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:34,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:35,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:35,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:35,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438566664] [2024-06-04 14:40:35,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438566664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:35,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:35,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:40:35,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708148274] [2024-06-04 14:40:35,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:35,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:40:35,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:35,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:40:35,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:40:35,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:35,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 129 transitions, 952 flow. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:35,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:35,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:35,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:36,185 INFO L124 PetriNetUnfolderBase]: 2419/3718 cut-off events. [2024-06-04 14:40:36,185 INFO L125 PetriNetUnfolderBase]: For 169379/169379 co-relation queries the response was YES. [2024-06-04 14:40:36,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25050 conditions, 3718 events. 2419/3718 cut-off events. For 169379/169379 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 18482 event pairs, 927 based on Foata normal form. 3/3720 useless extension candidates. Maximal degree in co-relation 24997. Up to 3515 conditions per place. [2024-06-04 14:40:36,216 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 107 selfloop transitions, 11 changer transitions 0/143 dead transitions. [2024-06-04 14:40:36,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 143 transitions, 1240 flow [2024-06-04 14:40:36,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:40:36,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:40:36,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-06-04 14:40:36,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-04 14:40:36,225 INFO L175 Difference]: Start difference. First operand has 118 places, 129 transitions, 952 flow. Second operand 6 states and 110 transitions. [2024-06-04 14:40:36,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 143 transitions, 1240 flow [2024-06-04 14:40:36,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 143 transitions, 1182 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-04 14:40:36,351 INFO L231 Difference]: Finished difference. Result has 116 places, 132 transitions, 954 flow [2024-06-04 14:40:36,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=954, PETRI_PLACES=116, PETRI_TRANSITIONS=132} [2024-06-04 14:40:36,352 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 71 predicate places. [2024-06-04 14:40:36,352 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 132 transitions, 954 flow [2024-06-04 14:40:36,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:36,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:36,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:36,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 14:40:36,353 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 14:40:36,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:36,353 INFO L85 PathProgramCache]: Analyzing trace with hash 631071421, now seen corresponding path program 1 times [2024-06-04 14:40:36,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:36,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222996559] [2024-06-04 14:40:36,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:36,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:37,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:37,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:37,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222996559] [2024-06-04 14:40:37,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222996559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:37,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:37,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:40:37,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869009170] [2024-06-04 14:40:37,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:37,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:40:37,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:37,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:40:37,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:40:37,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:40:37,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 132 transitions, 954 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 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 14:40:37,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:37,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:40:37,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:38,723 INFO L124 PetriNetUnfolderBase]: 2126/3328 cut-off events. [2024-06-04 14:40:38,723 INFO L125 PetriNetUnfolderBase]: For 160433/160433 co-relation queries the response was YES. [2024-06-04 14:40:38,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23403 conditions, 3328 events. 2126/3328 cut-off events. For 160433/160433 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 17185 event pairs, 502 based on Foata normal form. 4/3331 useless extension candidates. Maximal degree in co-relation 23349. Up to 2898 conditions per place. [2024-06-04 14:40:38,747 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 135 selfloop transitions, 28 changer transitions 0/180 dead transitions. [2024-06-04 14:40:38,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 180 transitions, 1614 flow [2024-06-04 14:40:38,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:40:38,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:40:38,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2024-06-04 14:40:38,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-06-04 14:40:38,748 INFO L175 Difference]: Start difference. First operand has 116 places, 132 transitions, 954 flow. Second operand 10 states and 205 transitions. [2024-06-04 14:40:38,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 180 transitions, 1614 flow [2024-06-04 14:40:38,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 180 transitions, 1576 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-04 14:40:38,882 INFO L231 Difference]: Finished difference. Result has 122 places, 136 transitions, 1087 flow [2024-06-04 14:40:38,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1087, PETRI_PLACES=122, PETRI_TRANSITIONS=136} [2024-06-04 14:40:38,882 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 77 predicate places. [2024-06-04 14:40:38,882 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 136 transitions, 1087 flow [2024-06-04 14:40:38,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 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 14:40:38,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:38,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:38,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-04 14:40:38,883 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 14:40:38,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:38,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1946057937, now seen corresponding path program 1 times [2024-06-04 14:40:38,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:38,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156585098] [2024-06-04 14:40:38,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:38,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:40,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:40,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:40,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156585098] [2024-06-04 14:40:40,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156585098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:40,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:40,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:40:40,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40574767] [2024-06-04 14:40:40,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:40,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:40:40,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:40,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:40:40,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:40:40,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:40,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 136 transitions, 1087 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 14:40:40,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:40,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:40,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:41,310 INFO L124 PetriNetUnfolderBase]: 2247/3454 cut-off events. [2024-06-04 14:40:41,310 INFO L125 PetriNetUnfolderBase]: For 171068/171068 co-relation queries the response was YES. [2024-06-04 14:40:41,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24692 conditions, 3454 events. 2247/3454 cut-off events. For 171068/171068 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 17397 event pairs, 667 based on Foata normal form. 2/3455 useless extension candidates. Maximal degree in co-relation 24637. Up to 3176 conditions per place. [2024-06-04 14:40:41,337 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 148 selfloop transitions, 29 changer transitions 0/183 dead transitions. [2024-06-04 14:40:41,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 183 transitions, 1611 flow [2024-06-04 14:40:41,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:40:41,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:40:41,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2024-06-04 14:40:41,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:40:41,339 INFO L175 Difference]: Start difference. First operand has 122 places, 136 transitions, 1087 flow. Second operand 11 states and 209 transitions. [2024-06-04 14:40:41,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 183 transitions, 1611 flow [2024-06-04 14:40:41,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 183 transitions, 1517 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-04 14:40:41,492 INFO L231 Difference]: Finished difference. Result has 127 places, 139 transitions, 1125 flow [2024-06-04 14:40:41,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1125, PETRI_PLACES=127, PETRI_TRANSITIONS=139} [2024-06-04 14:40:41,493 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 82 predicate places. [2024-06-04 14:40:41,493 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 139 transitions, 1125 flow [2024-06-04 14:40:41,493 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 14:40:41,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:41,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:41,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-04 14:40:41,494 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 14:40:41,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:41,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1946057813, now seen corresponding path program 2 times [2024-06-04 14:40:41,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:41,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021439551] [2024-06-04 14:40:41,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:41,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:42,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:42,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:42,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021439551] [2024-06-04 14:40:42,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021439551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:42,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:42,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:40:42,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631640354] [2024-06-04 14:40:42,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:42,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:40:42,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:42,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:40:42,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:40:42,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:40:42,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 139 transitions, 1125 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 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 14:40:42,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:42,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:40:42,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:43,696 INFO L124 PetriNetUnfolderBase]: 2163/3380 cut-off events. [2024-06-04 14:40:43,696 INFO L125 PetriNetUnfolderBase]: For 183131/183131 co-relation queries the response was YES. [2024-06-04 14:40:43,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24728 conditions, 3380 events. 2163/3380 cut-off events. For 183131/183131 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 17432 event pairs, 638 based on Foata normal form. 4/3383 useless extension candidates. Maximal degree in co-relation 24671. Up to 3006 conditions per place. [2024-06-04 14:40:43,716 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 139 selfloop transitions, 25 changer transitions 0/182 dead transitions. [2024-06-04 14:40:43,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 182 transitions, 1595 flow [2024-06-04 14:40:43,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:40:43,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:40:43,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 202 transitions. [2024-06-04 14:40:43,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590909090909091 [2024-06-04 14:40:43,718 INFO L175 Difference]: Start difference. First operand has 127 places, 139 transitions, 1125 flow. Second operand 10 states and 202 transitions. [2024-06-04 14:40:43,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 182 transitions, 1595 flow [2024-06-04 14:40:43,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 182 transitions, 1491 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-04 14:40:43,842 INFO L231 Difference]: Finished difference. Result has 128 places, 141 transitions, 1120 flow [2024-06-04 14:40:43,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1021, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1120, PETRI_PLACES=128, PETRI_TRANSITIONS=141} [2024-06-04 14:40:43,843 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 83 predicate places. [2024-06-04 14:40:43,843 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 141 transitions, 1120 flow [2024-06-04 14:40:43,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 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 14:40:43,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:43,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:43,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-04 14:40:43,843 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:40:43,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:43,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1303131329, now seen corresponding path program 1 times [2024-06-04 14:40:43,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:43,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070629423] [2024-06-04 14:40:43,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:43,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:44,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:44,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:44,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070629423] [2024-06-04 14:40:44,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070629423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:44,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:44,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:40:44,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270789884] [2024-06-04 14:40:44,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:44,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:40:44,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:44,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:40:44,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:40:45,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:45,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 141 transitions, 1120 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 14:40:45,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:45,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:45,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:45,745 INFO L124 PetriNetUnfolderBase]: 2291/3517 cut-off events. [2024-06-04 14:40:45,745 INFO L125 PetriNetUnfolderBase]: For 195408/195408 co-relation queries the response was YES. [2024-06-04 14:40:45,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25868 conditions, 3517 events. 2291/3517 cut-off events. For 195408/195408 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 17736 event pairs, 657 based on Foata normal form. 4/3517 useless extension candidates. Maximal degree in co-relation 25810. Up to 3276 conditions per place. [2024-06-04 14:40:45,771 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 152 selfloop transitions, 20 changer transitions 0/178 dead transitions. [2024-06-04 14:40:45,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 178 transitions, 1610 flow [2024-06-04 14:40:45,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:40:45,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:40:45,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-04 14:40:45,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43686868686868685 [2024-06-04 14:40:45,773 INFO L175 Difference]: Start difference. First operand has 128 places, 141 transitions, 1120 flow. Second operand 9 states and 173 transitions. [2024-06-04 14:40:45,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 178 transitions, 1610 flow [2024-06-04 14:40:45,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 178 transitions, 1533 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-04 14:40:45,888 INFO L231 Difference]: Finished difference. Result has 129 places, 144 transitions, 1155 flow [2024-06-04 14:40:45,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1155, PETRI_PLACES=129, PETRI_TRANSITIONS=144} [2024-06-04 14:40:45,888 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 84 predicate places. [2024-06-04 14:40:45,888 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 144 transitions, 1155 flow [2024-06-04 14:40:45,889 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 14:40:45,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:45,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:45,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-04 14:40:45,889 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 14:40:45,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:45,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1948854323, now seen corresponding path program 3 times [2024-06-04 14:40:45,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:45,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529171589] [2024-06-04 14:40:45,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:45,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:47,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:47,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:47,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529171589] [2024-06-04 14:40:47,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529171589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:47,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:47,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:40:47,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659095978] [2024-06-04 14:40:47,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:47,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:40:47,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:47,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:40:47,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:40:47,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:40:47,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 144 transitions, 1155 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 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 14:40:47,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:47,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:40:47,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:48,339 INFO L124 PetriNetUnfolderBase]: 2178/3402 cut-off events. [2024-06-04 14:40:48,339 INFO L125 PetriNetUnfolderBase]: For 203215/203215 co-relation queries the response was YES. [2024-06-04 14:40:48,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25584 conditions, 3402 events. 2178/3402 cut-off events. For 203215/203215 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 17563 event pairs, 627 based on Foata normal form. 4/3403 useless extension candidates. Maximal degree in co-relation 25525. Up to 3053 conditions per place. [2024-06-04 14:40:48,365 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 141 selfloop transitions, 19 changer transitions 0/178 dead transitions. [2024-06-04 14:40:48,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 178 transitions, 1561 flow [2024-06-04 14:40:48,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:40:48,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:40:48,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-04 14:40:48,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:40:48,368 INFO L175 Difference]: Start difference. First operand has 129 places, 144 transitions, 1155 flow. Second operand 9 states and 180 transitions. [2024-06-04 14:40:48,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 178 transitions, 1561 flow [2024-06-04 14:40:48,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 178 transitions, 1445 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-04 14:40:48,495 INFO L231 Difference]: Finished difference. Result has 131 places, 144 transitions, 1084 flow [2024-06-04 14:40:48,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1039, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1084, PETRI_PLACES=131, PETRI_TRANSITIONS=144} [2024-06-04 14:40:48,495 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 86 predicate places. [2024-06-04 14:40:48,495 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 144 transitions, 1084 flow [2024-06-04 14:40:48,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 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 14:40:48,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:48,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:48,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-04 14:40:48,496 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 14:40:48,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:48,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1307599979, now seen corresponding path program 2 times [2024-06-04 14:40:48,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:48,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036167030] [2024-06-04 14:40:48,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:48,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:49,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:49,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:49,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036167030] [2024-06-04 14:40:49,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036167030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:49,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:49,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:40:49,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543277006] [2024-06-04 14:40:49,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:49,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:40:49,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:49,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:40:49,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:40:49,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:49,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 144 transitions, 1084 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 14:40:49,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:49,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:49,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:50,391 INFO L124 PetriNetUnfolderBase]: 2353/3609 cut-off events. [2024-06-04 14:40:50,391 INFO L125 PetriNetUnfolderBase]: For 219690/219692 co-relation queries the response was YES. [2024-06-04 14:40:50,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27275 conditions, 3609 events. 2353/3609 cut-off events. For 219690/219692 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 18269 event pairs, 643 based on Foata normal form. 4/3610 useless extension candidates. Maximal degree in co-relation 27215. Up to 3042 conditions per place. [2024-06-04 14:40:50,418 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 121 selfloop transitions, 64 changer transitions 0/191 dead transitions. [2024-06-04 14:40:50,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 191 transitions, 2026 flow [2024-06-04 14:40:50,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:40:50,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:40:50,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2024-06-04 14:40:50,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-06-04 14:40:50,419 INFO L175 Difference]: Start difference. First operand has 131 places, 144 transitions, 1084 flow. Second operand 9 states and 189 transitions. [2024-06-04 14:40:50,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 191 transitions, 2026 flow [2024-06-04 14:40:50,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 191 transitions, 1976 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-04 14:40:50,578 INFO L231 Difference]: Finished difference. Result has 132 places, 153 transitions, 1368 flow [2024-06-04 14:40:50,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1368, PETRI_PLACES=132, PETRI_TRANSITIONS=153} [2024-06-04 14:40:50,578 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 87 predicate places. [2024-06-04 14:40:50,578 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 153 transitions, 1368 flow [2024-06-04 14:40:50,578 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 14:40:50,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:50,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:50,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-04 14:40:50,579 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 14:40:50,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:50,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1307599793, now seen corresponding path program 2 times [2024-06-04 14:40:50,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:50,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29815707] [2024-06-04 14:40:50,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:50,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:51,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:51,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:51,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29815707] [2024-06-04 14:40:51,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29815707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:51,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:51,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:40:51,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034870502] [2024-06-04 14:40:51,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:51,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:40:51,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:51,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:40:51,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:40:52,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:52,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 153 transitions, 1368 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 14:40:52,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:52,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:52,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:52,803 INFO L124 PetriNetUnfolderBase]: 2364/3625 cut-off events. [2024-06-04 14:40:52,804 INFO L125 PetriNetUnfolderBase]: For 232350/232352 co-relation queries the response was YES. [2024-06-04 14:40:52,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28238 conditions, 3625 events. 2364/3625 cut-off events. For 232350/232352 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 18369 event pairs, 678 based on Foata normal form. 2/3624 useless extension candidates. Maximal degree in co-relation 28177. Up to 3264 conditions per place. [2024-06-04 14:40:52,831 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 128 selfloop transitions, 52 changer transitions 0/186 dead transitions. [2024-06-04 14:40:52,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 186 transitions, 1872 flow [2024-06-04 14:40:52,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:40:52,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:40:52,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-04 14:40:52,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44696969696969696 [2024-06-04 14:40:52,832 INFO L175 Difference]: Start difference. First operand has 132 places, 153 transitions, 1368 flow. Second operand 9 states and 177 transitions. [2024-06-04 14:40:52,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 186 transitions, 1872 flow [2024-06-04 14:40:52,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 186 transitions, 1770 flow, removed 35 selfloop flow, removed 4 redundant places. [2024-06-04 14:40:52,999 INFO L231 Difference]: Finished difference. Result has 137 places, 156 transitions, 1452 flow [2024-06-04 14:40:53,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1452, PETRI_PLACES=137, PETRI_TRANSITIONS=156} [2024-06-04 14:40:53,000 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 92 predicate places. [2024-06-04 14:40:53,000 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 156 transitions, 1452 flow [2024-06-04 14:40:53,000 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 14:40:53,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:53,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:53,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-04 14:40:53,001 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 14:40:53,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:53,001 INFO L85 PathProgramCache]: Analyzing trace with hash 2064145493, now seen corresponding path program 4 times [2024-06-04 14:40:53,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:53,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085590436] [2024-06-04 14:40:53,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:53,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:54,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:54,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:54,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085590436] [2024-06-04 14:40:54,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085590436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:54,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:54,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:40:54,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243068847] [2024-06-04 14:40:54,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:54,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:40:54,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:54,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:40:54,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:40:54,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:40:54,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 156 transitions, 1452 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 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 14:40:54,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:54,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:40:54,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:55,405 INFO L124 PetriNetUnfolderBase]: 2268/3549 cut-off events. [2024-06-04 14:40:55,406 INFO L125 PetriNetUnfolderBase]: For 246294/246296 co-relation queries the response was YES. [2024-06-04 14:40:55,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28373 conditions, 3549 events. 2268/3549 cut-off events. For 246294/246296 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 18484 event pairs, 635 based on Foata normal form. 6/3552 useless extension candidates. Maximal degree in co-relation 28310. Up to 3139 conditions per place. [2024-06-04 14:40:55,434 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 139 selfloop transitions, 31 changer transitions 0/189 dead transitions. [2024-06-04 14:40:55,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 189 transitions, 1934 flow [2024-06-04 14:40:55,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:40:55,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:40:55,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-04 14:40:55,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45707070707070707 [2024-06-04 14:40:55,436 INFO L175 Difference]: Start difference. First operand has 137 places, 156 transitions, 1452 flow. Second operand 9 states and 181 transitions. [2024-06-04 14:40:55,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 189 transitions, 1934 flow [2024-06-04 14:40:55,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 189 transitions, 1772 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-04 14:40:55,651 INFO L231 Difference]: Finished difference. Result has 139 places, 158 transitions, 1427 flow [2024-06-04 14:40:55,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1290, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1427, PETRI_PLACES=139, PETRI_TRANSITIONS=158} [2024-06-04 14:40:55,651 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 94 predicate places. [2024-06-04 14:40:55,651 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 158 transitions, 1427 flow [2024-06-04 14:40:55,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 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 14:40:55,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:55,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:55,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-04 14:40:55,652 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:40:55,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:55,652 INFO L85 PathProgramCache]: Analyzing trace with hash 2064145617, now seen corresponding path program 3 times [2024-06-04 14:40:55,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:55,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845335408] [2024-06-04 14:40:55,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:55,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:56,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:56,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:56,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845335408] [2024-06-04 14:40:56,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845335408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:56,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:56,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:40:56,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343972800] [2024-06-04 14:40:56,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:56,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:40:56,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:56,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:40:56,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:40:57,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:57,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 158 transitions, 1427 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 14:40:57,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:57,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:57,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:57,802 INFO L124 PetriNetUnfolderBase]: 2408/3691 cut-off events. [2024-06-04 14:40:57,802 INFO L125 PetriNetUnfolderBase]: For 260399/260401 co-relation queries the response was YES. [2024-06-04 14:40:57,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29871 conditions, 3691 events. 2408/3691 cut-off events. For 260399/260401 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 18756 event pairs, 678 based on Foata normal form. 2/3690 useless extension candidates. Maximal degree in co-relation 29807. Up to 3301 conditions per place. [2024-06-04 14:40:57,831 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 130 selfloop transitions, 60 changer transitions 0/196 dead transitions. [2024-06-04 14:40:57,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 196 transitions, 2191 flow [2024-06-04 14:40:57,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:40:57,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:40:57,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-04 14:40:57,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:40:57,833 INFO L175 Difference]: Start difference. First operand has 139 places, 158 transitions, 1427 flow. Second operand 9 states and 180 transitions. [2024-06-04 14:40:57,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 196 transitions, 2191 flow [2024-06-04 14:40:58,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 196 transitions, 2072 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-04 14:40:58,043 INFO L231 Difference]: Finished difference. Result has 141 places, 164 transitions, 1594 flow [2024-06-04 14:40:58,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1308, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1594, PETRI_PLACES=141, PETRI_TRANSITIONS=164} [2024-06-04 14:40:58,053 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 96 predicate places. [2024-06-04 14:40:58,054 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 164 transitions, 1594 flow [2024-06-04 14:40:58,054 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 14:40:58,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:58,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:58,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-04 14:40:58,054 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:40:58,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:58,055 INFO L85 PathProgramCache]: Analyzing trace with hash 2064329943, now seen corresponding path program 3 times [2024-06-04 14:40:58,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:58,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811287089] [2024-06-04 14:40:58,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:58,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:59,177 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 14:40:59,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:59,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811287089] [2024-06-04 14:40:59,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811287089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:59,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:59,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:40:59,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893449343] [2024-06-04 14:40:59,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:59,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:40:59,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:59,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:40:59,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:40:59,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:59,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 164 transitions, 1594 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 14:40:59,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:59,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:59,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:59,989 INFO L124 PetriNetUnfolderBase]: 2430/3733 cut-off events. [2024-06-04 14:40:59,989 INFO L125 PetriNetUnfolderBase]: For 276229/276231 co-relation queries the response was YES. [2024-06-04 14:41:00,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30701 conditions, 3733 events. 2430/3733 cut-off events. For 276229/276231 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 19048 event pairs, 640 based on Foata normal form. 4/3734 useless extension candidates. Maximal degree in co-relation 30636. Up to 3143 conditions per place. [2024-06-04 14:41:00,022 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 128 selfloop transitions, 70 changer transitions 0/204 dead transitions. [2024-06-04 14:41:00,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 204 transitions, 2456 flow [2024-06-04 14:41:00,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:00,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:00,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 186 transitions. [2024-06-04 14:41:00,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-06-04 14:41:00,024 INFO L175 Difference]: Start difference. First operand has 141 places, 164 transitions, 1594 flow. Second operand 9 states and 186 transitions. [2024-06-04 14:41:00,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 204 transitions, 2456 flow [2024-06-04 14:41:00,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 204 transitions, 2308 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-04 14:41:00,297 INFO L231 Difference]: Finished difference. Result has 145 places, 167 transitions, 1652 flow [2024-06-04 14:41:00,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1652, PETRI_PLACES=145, PETRI_TRANSITIONS=167} [2024-06-04 14:41:00,297 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 100 predicate places. [2024-06-04 14:41:00,297 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 167 transitions, 1652 flow [2024-06-04 14:41:00,298 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 14:41:00,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:00,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:00,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-04 14:41:00,298 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:00,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:00,298 INFO L85 PathProgramCache]: Analyzing trace with hash 749397491, now seen corresponding path program 4 times [2024-06-04 14:41:00,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:00,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150557681] [2024-06-04 14:41:00,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:00,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:00,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:01,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:01,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:01,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150557681] [2024-06-04 14:41:01,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150557681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:01,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:01,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:01,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309648101] [2024-06-04 14:41:01,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:01,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:01,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:01,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:01,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:01,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:01,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 167 transitions, 1652 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 14:41:01,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:01,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:01,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:02,132 INFO L124 PetriNetUnfolderBase]: 2420/3714 cut-off events. [2024-06-04 14:41:02,133 INFO L125 PetriNetUnfolderBase]: For 284664/284666 co-relation queries the response was YES. [2024-06-04 14:41:02,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30895 conditions, 3714 events. 2420/3714 cut-off events. For 284664/284666 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 18852 event pairs, 643 based on Foata normal form. 4/3715 useless extension candidates. Maximal degree in co-relation 30828. Up to 3135 conditions per place. [2024-06-04 14:41:02,165 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 129 selfloop transitions, 68 changer transitions 0/203 dead transitions. [2024-06-04 14:41:02,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 203 transitions, 2302 flow [2024-06-04 14:41:02,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:02,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:02,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 186 transitions. [2024-06-04 14:41:02,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-06-04 14:41:02,166 INFO L175 Difference]: Start difference. First operand has 145 places, 167 transitions, 1652 flow. Second operand 9 states and 186 transitions. [2024-06-04 14:41:02,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 203 transitions, 2302 flow [2024-06-04 14:41:02,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 203 transitions, 2090 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-04 14:41:02,427 INFO L231 Difference]: Finished difference. Result has 148 places, 167 transitions, 1584 flow [2024-06-04 14:41:02,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1440, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1584, PETRI_PLACES=148, PETRI_TRANSITIONS=167} [2024-06-04 14:41:02,429 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 103 predicate places. [2024-06-04 14:41:02,429 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 167 transitions, 1584 flow [2024-06-04 14:41:02,433 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 14:41:02,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:02,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:02,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-04 14:41:02,434 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 14:41:02,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:02,435 INFO L85 PathProgramCache]: Analyzing trace with hash 749397305, now seen corresponding path program 4 times [2024-06-04 14:41:02,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:02,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754153476] [2024-06-04 14:41:02,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:02,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:03,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:03,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754153476] [2024-06-04 14:41:03,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754153476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:03,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:03,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:03,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162474160] [2024-06-04 14:41:03,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:03,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:03,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:03,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:03,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:03,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:03,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 167 transitions, 1584 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 14:41:03,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:03,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:03,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:04,540 INFO L124 PetriNetUnfolderBase]: 2415/3707 cut-off events. [2024-06-04 14:41:04,541 INFO L125 PetriNetUnfolderBase]: For 292456/292458 co-relation queries the response was YES. [2024-06-04 14:41:04,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30845 conditions, 3707 events. 2415/3707 cut-off events. For 292456/292458 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 18807 event pairs, 676 based on Foata normal form. 2/3706 useless extension candidates. Maximal degree in co-relation 30777. Up to 3341 conditions per place. [2024-06-04 14:41:04,567 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 138 selfloop transitions, 53 changer transitions 0/197 dead transitions. [2024-06-04 14:41:04,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 197 transitions, 2042 flow [2024-06-04 14:41:04,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:04,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:04,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-04 14:41:04,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-04 14:41:04,568 INFO L175 Difference]: Start difference. First operand has 148 places, 167 transitions, 1584 flow. Second operand 9 states and 176 transitions. [2024-06-04 14:41:04,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 197 transitions, 2042 flow [2024-06-04 14:41:04,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 197 transitions, 1842 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-04 14:41:04,764 INFO L231 Difference]: Finished difference. Result has 148 places, 167 transitions, 1498 flow [2024-06-04 14:41:04,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1384, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1498, PETRI_PLACES=148, PETRI_TRANSITIONS=167} [2024-06-04 14:41:04,764 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 103 predicate places. [2024-06-04 14:41:04,765 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 167 transitions, 1498 flow [2024-06-04 14:41:04,765 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 14:41:04,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:04,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:04,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-04 14:41:04,765 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:04,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:04,767 INFO L85 PathProgramCache]: Analyzing trace with hash -344045506, now seen corresponding path program 1 times [2024-06-04 14:41:04,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:04,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592271620] [2024-06-04 14:41:04,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:04,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:05,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:05,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:05,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592271620] [2024-06-04 14:41:05,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592271620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:05,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:05,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:41:05,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903336122] [2024-06-04 14:41:05,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:05,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:41:05,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:05,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:41:05,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:41:05,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:05,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 167 transitions, 1498 flow. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:05,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:05,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:05,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:06,385 INFO L124 PetriNetUnfolderBase]: 2678/4090 cut-off events. [2024-06-04 14:41:06,385 INFO L125 PetriNetUnfolderBase]: For 347966/347972 co-relation queries the response was YES. [2024-06-04 14:41:06,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34288 conditions, 4090 events. 2678/4090 cut-off events. For 347966/347972 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 20606 event pairs, 867 based on Foata normal form. 4/4074 useless extension candidates. Maximal degree in co-relation 34219. Up to 3840 conditions per place. [2024-06-04 14:41:06,417 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 142 selfloop transitions, 18 changer transitions 0/189 dead transitions. [2024-06-04 14:41:06,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 189 transitions, 2012 flow [2024-06-04 14:41:06,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:41:06,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:41:06,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2024-06-04 14:41:06,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-04 14:41:06,418 INFO L175 Difference]: Start difference. First operand has 148 places, 167 transitions, 1498 flow. Second operand 6 states and 117 transitions. [2024-06-04 14:41:06,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 189 transitions, 2012 flow [2024-06-04 14:41:06,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 189 transitions, 1888 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-04 14:41:06,736 INFO L231 Difference]: Finished difference. Result has 146 places, 173 transitions, 1491 flow [2024-06-04 14:41:06,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1374, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1491, PETRI_PLACES=146, PETRI_TRANSITIONS=173} [2024-06-04 14:41:06,736 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 101 predicate places. [2024-06-04 14:41:06,736 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 173 transitions, 1491 flow [2024-06-04 14:41:06,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:06,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:06,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:06,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-04 14:41:06,737 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 14:41:06,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:06,737 INFO L85 PathProgramCache]: Analyzing trace with hash -2064998219, now seen corresponding path program 5 times [2024-06-04 14:41:06,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:06,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392232972] [2024-06-04 14:41:06,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:06,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:07,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:07,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:07,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392232972] [2024-06-04 14:41:07,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392232972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:07,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:07,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:07,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960059673] [2024-06-04 14:41:07,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:07,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:07,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:07,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:07,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:07,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:07,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 173 transitions, 1491 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 14:41:07,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:07,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:07,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:08,663 INFO L124 PetriNetUnfolderBase]: 2491/3815 cut-off events. [2024-06-04 14:41:08,664 INFO L125 PetriNetUnfolderBase]: For 325495/325495 co-relation queries the response was YES. [2024-06-04 14:41:08,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32400 conditions, 3815 events. 2491/3815 cut-off events. For 325495/325495 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19414 event pairs, 669 based on Foata normal form. 4/3812 useless extension candidates. Maximal degree in co-relation 32330. Up to 3386 conditions per place. [2024-06-04 14:41:08,694 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 161 selfloop transitions, 44 changer transitions 0/213 dead transitions. [2024-06-04 14:41:08,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 213 transitions, 2469 flow [2024-06-04 14:41:08,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:08,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:08,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-04 14:41:08,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:41:08,697 INFO L175 Difference]: Start difference. First operand has 146 places, 173 transitions, 1491 flow. Second operand 9 states and 180 transitions. [2024-06-04 14:41:08,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 213 transitions, 2469 flow [2024-06-04 14:41:08,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 213 transitions, 2433 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-04 14:41:08,834 INFO L231 Difference]: Finished difference. Result has 153 places, 179 transitions, 1691 flow [2024-06-04 14:41:08,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1691, PETRI_PLACES=153, PETRI_TRANSITIONS=179} [2024-06-04 14:41:08,835 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 108 predicate places. [2024-06-04 14:41:08,835 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 179 transitions, 1691 flow [2024-06-04 14:41:08,835 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 14:41:08,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:08,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:08,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-04 14:41:08,836 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:08,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:08,836 INFO L85 PathProgramCache]: Analyzing trace with hash 489022127, now seen corresponding path program 5 times [2024-06-04 14:41:08,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:08,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496665491] [2024-06-04 14:41:08,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:08,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:08,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:09,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:09,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:09,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496665491] [2024-06-04 14:41:09,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496665491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:09,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:09,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:09,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398399372] [2024-06-04 14:41:09,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:09,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:09,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:09,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:09,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:10,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:10,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 179 transitions, 1691 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 14:41:10,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:10,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:10,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:10,841 INFO L124 PetriNetUnfolderBase]: 2502/3831 cut-off events. [2024-06-04 14:41:10,841 INFO L125 PetriNetUnfolderBase]: For 338420/338420 co-relation queries the response was YES. [2024-06-04 14:41:10,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33047 conditions, 3831 events. 2502/3831 cut-off events. For 338420/338420 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 19472 event pairs, 674 based on Foata normal form. 2/3826 useless extension candidates. Maximal degree in co-relation 32975. Up to 3552 conditions per place. [2024-06-04 14:41:10,878 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 169 selfloop transitions, 32 changer transitions 0/209 dead transitions. [2024-06-04 14:41:10,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 209 transitions, 2243 flow [2024-06-04 14:41:10,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:10,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:10,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-04 14:41:10,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-06-04 14:41:10,879 INFO L175 Difference]: Start difference. First operand has 153 places, 179 transitions, 1691 flow. Second operand 9 states and 170 transitions. [2024-06-04 14:41:10,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 209 transitions, 2243 flow [2024-06-04 14:41:11,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 209 transitions, 2073 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-04 14:41:11,206 INFO L231 Difference]: Finished difference. Result has 156 places, 182 transitions, 1681 flow [2024-06-04 14:41:11,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1521, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1681, PETRI_PLACES=156, PETRI_TRANSITIONS=182} [2024-06-04 14:41:11,207 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 111 predicate places. [2024-06-04 14:41:11,207 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 182 transitions, 1681 flow [2024-06-04 14:41:11,207 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 14:41:11,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:11,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:11,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-04 14:41:11,207 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 14:41:11,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:11,208 INFO L85 PathProgramCache]: Analyzing trace with hash 489022313, now seen corresponding path program 6 times [2024-06-04 14:41:11,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:11,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144503736] [2024-06-04 14:41:11,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:11,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:12,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:12,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:12,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144503736] [2024-06-04 14:41:12,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144503736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:12,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:12,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:12,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848679559] [2024-06-04 14:41:12,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:12,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:12,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:12,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:12,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:12,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:12,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 182 transitions, 1681 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 14:41:12,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:12,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:12,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:13,191 INFO L124 PetriNetUnfolderBase]: 2524/3868 cut-off events. [2024-06-04 14:41:13,192 INFO L125 PetriNetUnfolderBase]: For 354406/354406 co-relation queries the response was YES. [2024-06-04 14:41:13,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33603 conditions, 3868 events. 2524/3868 cut-off events. For 354406/354406 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 19739 event pairs, 669 based on Foata normal form. 4/3865 useless extension candidates. Maximal degree in co-relation 33530. Up to 3421 conditions per place. [2024-06-04 14:41:13,224 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 166 selfloop transitions, 46 changer transitions 0/220 dead transitions. [2024-06-04 14:41:13,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 220 transitions, 2607 flow [2024-06-04 14:41:13,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:13,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:13,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-04 14:41:13,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2024-06-04 14:41:13,241 INFO L175 Difference]: Start difference. First operand has 156 places, 182 transitions, 1681 flow. Second operand 9 states and 182 transitions. [2024-06-04 14:41:13,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 220 transitions, 2607 flow [2024-06-04 14:41:13,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 220 transitions, 2471 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-04 14:41:13,615 INFO L231 Difference]: Finished difference. Result has 158 places, 185 transitions, 1699 flow [2024-06-04 14:41:13,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1545, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1699, PETRI_PLACES=158, PETRI_TRANSITIONS=185} [2024-06-04 14:41:13,615 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 113 predicate places. [2024-06-04 14:41:13,616 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 185 transitions, 1699 flow [2024-06-04 14:41:13,616 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 14:41:13,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:13,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:13,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-04 14:41:13,616 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 14:41:13,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:13,617 INFO L85 PathProgramCache]: Analyzing trace with hash 488844373, now seen corresponding path program 5 times [2024-06-04 14:41:13,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:13,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696864601] [2024-06-04 14:41:13,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:13,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:14,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:14,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:14,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696864601] [2024-06-04 14:41:14,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696864601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:14,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:14,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:14,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582338763] [2024-06-04 14:41:14,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:14,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:14,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:14,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:14,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:14,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:41:14,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 185 transitions, 1699 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 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 14:41:14,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:14,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:41:14,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:15,714 INFO L124 PetriNetUnfolderBase]: 2399/3739 cut-off events. [2024-06-04 14:41:15,714 INFO L125 PetriNetUnfolderBase]: For 362534/362534 co-relation queries the response was YES. [2024-06-04 14:41:15,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32732 conditions, 3739 events. 2399/3739 cut-off events. For 362534/362534 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 19537 event pairs, 643 based on Foata normal form. 4/3736 useless extension candidates. Maximal degree in co-relation 32658. Up to 3365 conditions per place. [2024-06-04 14:41:15,743 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 172 selfloop transitions, 19 changer transitions 0/215 dead transitions. [2024-06-04 14:41:15,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 215 transitions, 2223 flow [2024-06-04 14:41:15,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:15,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:15,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-04 14:41:15,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-04 14:41:15,745 INFO L175 Difference]: Start difference. First operand has 158 places, 185 transitions, 1699 flow. Second operand 9 states and 174 transitions. [2024-06-04 14:41:15,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 215 transitions, 2223 flow [2024-06-04 14:41:16,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 215 transitions, 2105 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-04 14:41:16,022 INFO L231 Difference]: Finished difference. Result has 161 places, 187 transitions, 1702 flow [2024-06-04 14:41:16,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1702, PETRI_PLACES=161, PETRI_TRANSITIONS=187} [2024-06-04 14:41:16,023 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 116 predicate places. [2024-06-04 14:41:16,023 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 187 transitions, 1702 flow [2024-06-04 14:41:16,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 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 14:41:16,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:16,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:16,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-04 14:41:16,024 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:16,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:16,024 INFO L85 PathProgramCache]: Analyzing trace with hash 488849333, now seen corresponding path program 7 times [2024-06-04 14:41:16,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:16,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626943099] [2024-06-04 14:41:16,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:16,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:16,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:16,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:16,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626943099] [2024-06-04 14:41:16,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626943099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:16,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:16,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:16,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594903045] [2024-06-04 14:41:16,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:16,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:16,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:16,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:16,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:17,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:17,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 187 transitions, 1702 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 14:41:17,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:17,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:17,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:17,842 INFO L124 PetriNetUnfolderBase]: 2506/3842 cut-off events. [2024-06-04 14:41:17,842 INFO L125 PetriNetUnfolderBase]: For 374674/374674 co-relation queries the response was YES. [2024-06-04 14:41:17,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33593 conditions, 3842 events. 2506/3842 cut-off events. For 374674/374674 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 19592 event pairs, 658 based on Foata normal form. 4/3839 useless extension candidates. Maximal degree in co-relation 33518. Up to 3401 conditions per place. [2024-06-04 14:41:17,875 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 162 selfloop transitions, 49 changer transitions 0/219 dead transitions. [2024-06-04 14:41:17,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 219 transitions, 2394 flow [2024-06-04 14:41:17,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:17,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:17,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-04 14:41:17,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44696969696969696 [2024-06-04 14:41:17,882 INFO L175 Difference]: Start difference. First operand has 161 places, 187 transitions, 1702 flow. Second operand 9 states and 177 transitions. [2024-06-04 14:41:17,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 219 transitions, 2394 flow [2024-06-04 14:41:18,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 219 transitions, 2253 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-04 14:41:18,128 INFO L231 Difference]: Finished difference. Result has 163 places, 187 transitions, 1667 flow [2024-06-04 14:41:18,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1561, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1667, PETRI_PLACES=163, PETRI_TRANSITIONS=187} [2024-06-04 14:41:18,128 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 118 predicate places. [2024-06-04 14:41:18,128 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 187 transitions, 1667 flow [2024-06-04 14:41:18,128 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 14:41:18,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:18,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:18,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-04 14:41:18,129 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:18,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:18,129 INFO L85 PathProgramCache]: Analyzing trace with hash 488844497, now seen corresponding path program 6 times [2024-06-04 14:41:18,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:18,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965879504] [2024-06-04 14:41:18,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:18,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:19,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:19,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:19,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965879504] [2024-06-04 14:41:19,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965879504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:19,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:19,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:19,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826622545] [2024-06-04 14:41:19,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:19,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:19,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:19,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:19,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:19,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:19,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 187 transitions, 1667 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 14:41:19,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:19,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:19,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:20,361 INFO L124 PetriNetUnfolderBase]: 2517/3863 cut-off events. [2024-06-04 14:41:20,362 INFO L125 PetriNetUnfolderBase]: For 385605/385605 co-relation queries the response was YES. [2024-06-04 14:41:20,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33959 conditions, 3863 events. 2517/3863 cut-off events. For 385605/385605 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 19731 event pairs, 665 based on Foata normal form. 2/3858 useless extension candidates. Maximal degree in co-relation 33883. Up to 3540 conditions per place. [2024-06-04 14:41:20,397 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 176 selfloop transitions, 42 changer transitions 0/226 dead transitions. [2024-06-04 14:41:20,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 226 transitions, 2555 flow [2024-06-04 14:41:20,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:41:20,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:41:20,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-04 14:41:20,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42954545454545456 [2024-06-04 14:41:20,399 INFO L175 Difference]: Start difference. First operand has 163 places, 187 transitions, 1667 flow. Second operand 10 states and 189 transitions. [2024-06-04 14:41:20,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 226 transitions, 2555 flow [2024-06-04 14:41:20,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 226 transitions, 2447 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-04 14:41:20,868 INFO L231 Difference]: Finished difference. Result has 165 places, 193 transitions, 1838 flow [2024-06-04 14:41:20,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1559, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1838, PETRI_PLACES=165, PETRI_TRANSITIONS=193} [2024-06-04 14:41:20,869 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 120 predicate places. [2024-06-04 14:41:20,869 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 193 transitions, 1838 flow [2024-06-04 14:41:20,869 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 14:41:20,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:20,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:20,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-04 14:41:20,870 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 14:41:20,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:20,870 INFO L85 PathProgramCache]: Analyzing trace with hash 716923463, now seen corresponding path program 8 times [2024-06-04 14:41:20,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:20,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186263712] [2024-06-04 14:41:20,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:20,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:21,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:21,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:21,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186263712] [2024-06-04 14:41:21,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186263712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:21,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:21,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:21,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190477116] [2024-06-04 14:41:21,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:21,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:21,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:21,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:21,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:21,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:21,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 193 transitions, 1838 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 14:41:21,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:21,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:21,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:22,762 INFO L124 PetriNetUnfolderBase]: 2539/3895 cut-off events. [2024-06-04 14:41:22,762 INFO L125 PetriNetUnfolderBase]: For 405574/405574 co-relation queries the response was YES. [2024-06-04 14:41:22,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34718 conditions, 3895 events. 2539/3895 cut-off events. For 405574/405574 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 19960 event pairs, 663 based on Foata normal form. 4/3892 useless extension candidates. Maximal degree in co-relation 34641. Up to 3558 conditions per place. [2024-06-04 14:41:22,797 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 190 selfloop transitions, 30 changer transitions 0/228 dead transitions. [2024-06-04 14:41:22,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 228 transitions, 2617 flow [2024-06-04 14:41:22,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:22,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:22,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-04 14:41:22,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-04 14:41:22,799 INFO L175 Difference]: Start difference. First operand has 165 places, 193 transitions, 1838 flow. Second operand 9 states and 174 transitions. [2024-06-04 14:41:22,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 228 transitions, 2617 flow [2024-06-04 14:41:23,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 228 transitions, 2467 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-04 14:41:23,147 INFO L231 Difference]: Finished difference. Result has 168 places, 196 transitions, 1817 flow [2024-06-04 14:41:23,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1688, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1817, PETRI_PLACES=168, PETRI_TRANSITIONS=196} [2024-06-04 14:41:23,148 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 123 predicate places. [2024-06-04 14:41:23,148 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 196 transitions, 1817 flow [2024-06-04 14:41:23,148 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 14:41:23,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:23,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:23,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-04 14:41:23,148 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 14:41:23,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:23,149 INFO L85 PathProgramCache]: Analyzing trace with hash 725204183, now seen corresponding path program 9 times [2024-06-04 14:41:23,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:23,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988058481] [2024-06-04 14:41:23,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:23,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:24,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:24,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:24,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988058481] [2024-06-04 14:41:24,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988058481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:24,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:24,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:24,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935327587] [2024-06-04 14:41:24,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:24,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:24,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:24,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:24,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:24,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:24,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 196 transitions, 1817 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 14:41:24,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:24,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:24,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:25,007 INFO L124 PetriNetUnfolderBase]: 2561/3927 cut-off events. [2024-06-04 14:41:25,007 INFO L125 PetriNetUnfolderBase]: For 420196/420196 co-relation queries the response was YES. [2024-06-04 14:41:25,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35198 conditions, 3927 events. 2561/3927 cut-off events. For 420196/420196 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 20165 event pairs, 670 based on Foata normal form. 4/3924 useless extension candidates. Maximal degree in co-relation 35119. Up to 3660 conditions per place. [2024-06-04 14:41:25,045 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 200 selfloop transitions, 20 changer transitions 0/228 dead transitions. [2024-06-04 14:41:25,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 228 transitions, 2400 flow [2024-06-04 14:41:25,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:25,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:25,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-04 14:41:25,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-04 14:41:25,047 INFO L175 Difference]: Start difference. First operand has 168 places, 196 transitions, 1817 flow. Second operand 9 states and 168 transitions. [2024-06-04 14:41:25,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 228 transitions, 2400 flow [2024-06-04 14:41:25,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 228 transitions, 2244 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-04 14:41:25,399 INFO L231 Difference]: Finished difference. Result has 169 places, 199 transitions, 1782 flow [2024-06-04 14:41:25,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1674, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1782, PETRI_PLACES=169, PETRI_TRANSITIONS=199} [2024-06-04 14:41:25,400 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 124 predicate places. [2024-06-04 14:41:25,400 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 199 transitions, 1782 flow [2024-06-04 14:41:25,400 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 14:41:25,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:25,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:25,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-04 14:41:25,400 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 14:41:25,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:25,401 INFO L85 PathProgramCache]: Analyzing trace with hash 716923277, now seen corresponding path program 7 times [2024-06-04 14:41:25,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:25,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670844751] [2024-06-04 14:41:25,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:25,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:26,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:26,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:26,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670844751] [2024-06-04 14:41:26,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670844751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:26,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:26,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:26,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092229380] [2024-06-04 14:41:26,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:26,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:26,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:26,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:26,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:26,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:26,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 199 transitions, 1782 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 14:41:26,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:26,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:26,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:27,553 INFO L124 PetriNetUnfolderBase]: 2556/3920 cut-off events. [2024-06-04 14:41:27,553 INFO L125 PetriNetUnfolderBase]: For 428947/428947 co-relation queries the response was YES. [2024-06-04 14:41:27,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35111 conditions, 3920 events. 2556/3920 cut-off events. For 428947/428947 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 20094 event pairs, 675 based on Foata normal form. 2/3915 useless extension candidates. Maximal degree in co-relation 35031. Up to 3676 conditions per place. [2024-06-04 14:41:27,589 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 198 selfloop transitions, 20 changer transitions 0/226 dead transitions. [2024-06-04 14:41:27,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 226 transitions, 2286 flow [2024-06-04 14:41:27,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:27,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:27,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-04 14:41:27,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-06-04 14:41:27,591 INFO L175 Difference]: Start difference. First operand has 169 places, 199 transitions, 1782 flow. Second operand 9 states and 166 transitions. [2024-06-04 14:41:27,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 226 transitions, 2286 flow [2024-06-04 14:41:27,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 226 transitions, 2162 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-04 14:41:27,911 INFO L231 Difference]: Finished difference. Result has 171 places, 199 transitions, 1706 flow [2024-06-04 14:41:27,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1658, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1706, PETRI_PLACES=171, PETRI_TRANSITIONS=199} [2024-06-04 14:41:27,911 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 126 predicate places. [2024-06-04 14:41:27,911 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 199 transitions, 1706 flow [2024-06-04 14:41:27,912 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 14:41:27,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:27,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:27,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-04 14:41:27,912 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 14:41:27,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:27,912 INFO L85 PathProgramCache]: Analyzing trace with hash -2058742109, now seen corresponding path program 10 times [2024-06-04 14:41:27,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:27,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934032970] [2024-06-04 14:41:27,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:27,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:28,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:28,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:28,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934032970] [2024-06-04 14:41:28,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934032970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:28,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:28,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:28,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181055721] [2024-06-04 14:41:28,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:28,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:28,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:28,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:28,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:28,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:28,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 199 transitions, 1706 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 14:41:28,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:28,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:28,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:29,795 INFO L124 PetriNetUnfolderBase]: 2546/3906 cut-off events. [2024-06-04 14:41:29,795 INFO L125 PetriNetUnfolderBase]: For 440385/440385 co-relation queries the response was YES. [2024-06-04 14:41:29,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34926 conditions, 3906 events. 2546/3906 cut-off events. For 440385/440385 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 20001 event pairs, 668 based on Foata normal form. 4/3903 useless extension candidates. Maximal degree in co-relation 34845. Up to 3562 conditions per place. [2024-06-04 14:41:29,833 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 189 selfloop transitions, 32 changer transitions 0/229 dead transitions. [2024-06-04 14:41:29,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 229 transitions, 2228 flow [2024-06-04 14:41:29,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:29,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:29,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-04 14:41:29,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43686868686868685 [2024-06-04 14:41:29,834 INFO L175 Difference]: Start difference. First operand has 171 places, 199 transitions, 1706 flow. Second operand 9 states and 173 transitions. [2024-06-04 14:41:29,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 229 transitions, 2228 flow [2024-06-04 14:41:30,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 229 transitions, 2132 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-04 14:41:30,381 INFO L231 Difference]: Finished difference. Result has 172 places, 199 transitions, 1682 flow [2024-06-04 14:41:30,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1610, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1682, PETRI_PLACES=172, PETRI_TRANSITIONS=199} [2024-06-04 14:41:30,381 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 127 predicate places. [2024-06-04 14:41:30,381 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 199 transitions, 1682 flow [2024-06-04 14:41:30,382 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 14:41:30,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:30,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:30,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-04 14:41:30,382 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:30,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:30,382 INFO L85 PathProgramCache]: Analyzing trace with hash -329358016, now seen corresponding path program 2 times [2024-06-04 14:41:30,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:30,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100929336] [2024-06-04 14:41:30,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:30,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:30,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:31,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:31,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:31,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100929336] [2024-06-04 14:41:31,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100929336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:31,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:31,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:41:31,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376499163] [2024-06-04 14:41:31,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:31,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:41:31,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:31,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:41:31,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:41:31,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:31,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 199 transitions, 1682 flow. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:31,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:31,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:31,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:31,922 INFO L124 PetriNetUnfolderBase]: 2775/4239 cut-off events. [2024-06-04 14:41:31,922 INFO L125 PetriNetUnfolderBase]: For 509020/509032 co-relation queries the response was YES. [2024-06-04 14:41:31,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38214 conditions, 4239 events. 2775/4239 cut-off events. For 509020/509032 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 21460 event pairs, 860 based on Foata normal form. 9/4223 useless extension candidates. Maximal degree in co-relation 38132. Up to 4003 conditions per place. [2024-06-04 14:41:31,959 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 165 selfloop transitions, 11 changer transitions 0/208 dead transitions. [2024-06-04 14:41:31,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 208 transitions, 2056 flow [2024-06-04 14:41:31,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:41:31,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:41:31,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-04 14:41:31,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 14:41:31,960 INFO L175 Difference]: Start difference. First operand has 172 places, 199 transitions, 1682 flow. Second operand 6 states and 108 transitions. [2024-06-04 14:41:31,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 208 transitions, 2056 flow [2024-06-04 14:41:32,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 208 transitions, 1956 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-04 14:41:32,496 INFO L231 Difference]: Finished difference. Result has 170 places, 199 transitions, 1610 flow [2024-06-04 14:41:32,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1610, PETRI_PLACES=170, PETRI_TRANSITIONS=199} [2024-06-04 14:41:32,497 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 125 predicate places. [2024-06-04 14:41:32,497 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 199 transitions, 1610 flow [2024-06-04 14:41:32,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:32,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:32,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:32,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-04 14:41:32,497 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 14:41:32,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:32,498 INFO L85 PathProgramCache]: Analyzing trace with hash 602153148, now seen corresponding path program 1 times [2024-06-04 14:41:32,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:32,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684641381] [2024-06-04 14:41:32,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:32,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:32,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:33,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:33,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:33,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684641381] [2024-06-04 14:41:33,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684641381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:33,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:33,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:41:33,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978272492] [2024-06-04 14:41:33,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:33,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:41:33,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:33,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:41:33,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:41:33,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-04 14:41:33,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 199 transitions, 1610 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:33,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:33,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-04 14:41:33,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:34,078 INFO L124 PetriNetUnfolderBase]: 3040/4543 cut-off events. [2024-06-04 14:41:34,078 INFO L125 PetriNetUnfolderBase]: For 523463/523463 co-relation queries the response was YES. [2024-06-04 14:41:34,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39722 conditions, 4543 events. 3040/4543 cut-off events. For 523463/523463 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 22220 event pairs, 902 based on Foata normal form. 1/4543 useless extension candidates. Maximal degree in co-relation 39639. Up to 4382 conditions per place. [2024-06-04 14:41:34,116 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 181 selfloop transitions, 16 changer transitions 0/218 dead transitions. [2024-06-04 14:41:34,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 218 transitions, 2230 flow [2024-06-04 14:41:34,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:41:34,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:41:34,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-04 14:41:34,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4128787878787879 [2024-06-04 14:41:34,117 INFO L175 Difference]: Start difference. First operand has 170 places, 199 transitions, 1610 flow. Second operand 6 states and 109 transitions. [2024-06-04 14:41:34,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 218 transitions, 2230 flow [2024-06-04 14:41:34,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 218 transitions, 2192 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-04 14:41:34,884 INFO L231 Difference]: Finished difference. Result has 171 places, 205 transitions, 1700 flow [2024-06-04 14:41:34,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1572, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1700, PETRI_PLACES=171, PETRI_TRANSITIONS=205} [2024-06-04 14:41:34,885 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 126 predicate places. [2024-06-04 14:41:34,885 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 205 transitions, 1700 flow [2024-06-04 14:41:34,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:34,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:34,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:34,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-04 14:41:34,885 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 14:41:34,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:34,886 INFO L85 PathProgramCache]: Analyzing trace with hash 617613468, now seen corresponding path program 2 times [2024-06-04 14:41:34,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:34,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279209414] [2024-06-04 14:41:34,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:34,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:35,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:35,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:35,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279209414] [2024-06-04 14:41:35,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279209414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:35,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:35,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:41:35,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493753074] [2024-06-04 14:41:35,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:35,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:41:35,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:35,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:41:35,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:41:35,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-04 14:41:35,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 205 transitions, 1700 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:35,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:35,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-04 14:41:35,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:36,454 INFO L124 PetriNetUnfolderBase]: 3037/4540 cut-off events. [2024-06-04 14:41:36,454 INFO L125 PetriNetUnfolderBase]: For 540407/540409 co-relation queries the response was YES. [2024-06-04 14:41:36,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40327 conditions, 4540 events. 3037/4540 cut-off events. For 540407/540409 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 22199 event pairs, 905 based on Foata normal form. 3/4542 useless extension candidates. Maximal degree in co-relation 40243. Up to 4379 conditions per place. [2024-06-04 14:41:36,492 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 177 selfloop transitions, 16 changer transitions 0/214 dead transitions. [2024-06-04 14:41:36,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 214 transitions, 2108 flow [2024-06-04 14:41:36,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:41:36,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:41:36,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-04 14:41:36,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-04 14:41:36,493 INFO L175 Difference]: Start difference. First operand has 171 places, 205 transitions, 1700 flow. Second operand 6 states and 105 transitions. [2024-06-04 14:41:36,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 214 transitions, 2108 flow [2024-06-04 14:41:36,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 214 transitions, 2036 flow, removed 32 selfloop flow, removed 2 redundant places. [2024-06-04 14:41:36,998 INFO L231 Difference]: Finished difference. Result has 175 places, 205 transitions, 1666 flow [2024-06-04 14:41:36,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1628, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1666, PETRI_PLACES=175, PETRI_TRANSITIONS=205} [2024-06-04 14:41:36,998 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 130 predicate places. [2024-06-04 14:41:36,998 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 205 transitions, 1666 flow [2024-06-04 14:41:36,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:36,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:36,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:36,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-04 14:41:36,999 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:36,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:36,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1033222677, now seen corresponding path program 1 times [2024-06-04 14:41:37,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:37,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390520955] [2024-06-04 14:41:37,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:37,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:38,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:38,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:38,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390520955] [2024-06-04 14:41:38,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390520955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:38,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:38,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:41:38,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022438350] [2024-06-04 14:41:38,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:38,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:41:38,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:38,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:41:38,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:41:38,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-04 14:41:38,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 205 transitions, 1666 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 14:41:38,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:38,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-04 14:41:38,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:39,494 INFO L124 PetriNetUnfolderBase]: 2978/4472 cut-off events. [2024-06-04 14:41:39,495 INFO L125 PetriNetUnfolderBase]: For 561040/561052 co-relation queries the response was YES. [2024-06-04 14:41:39,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40447 conditions, 4472 events. 2978/4472 cut-off events. For 561040/561052 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 22022 event pairs, 806 based on Foata normal form. 4/4466 useless extension candidates. Maximal degree in co-relation 40361. Up to 4257 conditions per place. [2024-06-04 14:41:39,539 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 208 selfloop transitions, 21 changer transitions 0/238 dead transitions. [2024-06-04 14:41:39,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 238 transitions, 2284 flow [2024-06-04 14:41:39,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:39,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:39,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-04 14:41:39,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-04 14:41:39,541 INFO L175 Difference]: Start difference. First operand has 175 places, 205 transitions, 1666 flow. Second operand 9 states and 159 transitions. [2024-06-04 14:41:39,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 238 transitions, 2284 flow [2024-06-04 14:41:40,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 238 transitions, 2240 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-04 14:41:40,240 INFO L231 Difference]: Finished difference. Result has 180 places, 210 transitions, 1771 flow [2024-06-04 14:41:40,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1622, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1771, PETRI_PLACES=180, PETRI_TRANSITIONS=210} [2024-06-04 14:41:40,241 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 135 predicate places. [2024-06-04 14:41:40,241 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 210 transitions, 1771 flow [2024-06-04 14:41:40,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 14:41:40,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:40,242 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 14:41:40,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-04 14:41:40,242 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:40,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:40,244 INFO L85 PathProgramCache]: Analyzing trace with hash 196377513, now seen corresponding path program 1 times [2024-06-04 14:41:40,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:40,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575485809] [2024-06-04 14:41:40,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:40,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:41,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:41,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:41,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575485809] [2024-06-04 14:41:41,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575485809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:41,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:41,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:41:41,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181428373] [2024-06-04 14:41:41,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:41,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:41:41,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:41,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:41:41,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:41:41,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:41,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 210 transitions, 1771 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 14:41:41,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:41,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:41,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:42,793 INFO L124 PetriNetUnfolderBase]: 2829/4321 cut-off events. [2024-06-04 14:41:42,794 INFO L125 PetriNetUnfolderBase]: For 575658/575670 co-relation queries the response was YES. [2024-06-04 14:41:42,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40666 conditions, 4321 events. 2829/4321 cut-off events. For 575658/575670 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 22128 event pairs, 604 based on Foata normal form. 4/4316 useless extension candidates. Maximal degree in co-relation 40578. Up to 3846 conditions per place. [2024-06-04 14:41:42,835 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 217 selfloop transitions, 35 changer transitions 0/263 dead transitions. [2024-06-04 14:41:42,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 263 transitions, 2773 flow [2024-06-04 14:41:42,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:41:42,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:41:42,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-06-04 14:41:42,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4462809917355372 [2024-06-04 14:41:42,837 INFO L175 Difference]: Start difference. First operand has 180 places, 210 transitions, 1771 flow. Second operand 11 states and 216 transitions. [2024-06-04 14:41:42,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 263 transitions, 2773 flow [2024-06-04 14:41:43,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 263 transitions, 2668 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-04 14:41:43,505 INFO L231 Difference]: Finished difference. Result has 185 places, 214 transitions, 1903 flow [2024-06-04 14:41:43,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1666, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1903, PETRI_PLACES=185, PETRI_TRANSITIONS=214} [2024-06-04 14:41:43,506 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 140 predicate places. [2024-06-04 14:41:43,506 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 214 transitions, 1903 flow [2024-06-04 14:41:43,506 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 14:41:43,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:43,506 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 14:41:43,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-04 14:41:43,507 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:43,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:43,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1909747075, now seen corresponding path program 2 times [2024-06-04 14:41:43,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:43,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630319784] [2024-06-04 14:41:43,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:43,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:44,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:44,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:44,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630319784] [2024-06-04 14:41:44,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630319784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:44,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:44,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:41:44,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385216722] [2024-06-04 14:41:44,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:44,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:41:44,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:44,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:41:44,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:41:45,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:45,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 214 transitions, 1903 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 14:41:45,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:45,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:45,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:46,025 INFO L124 PetriNetUnfolderBase]: 2882/4403 cut-off events. [2024-06-04 14:41:46,025 INFO L125 PetriNetUnfolderBase]: For 607147/607159 co-relation queries the response was YES. [2024-06-04 14:41:46,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42046 conditions, 4403 events. 2882/4403 cut-off events. For 607147/607159 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 22689 event pairs, 747 based on Foata normal form. 4/4398 useless extension candidates. Maximal degree in co-relation 41957. Up to 4015 conditions per place. [2024-06-04 14:41:46,072 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 223 selfloop transitions, 35 changer transitions 0/269 dead transitions. [2024-06-04 14:41:46,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 269 transitions, 2945 flow [2024-06-04 14:41:46,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:41:46,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:41:46,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-06-04 14:41:46,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4462809917355372 [2024-06-04 14:41:46,074 INFO L175 Difference]: Start difference. First operand has 185 places, 214 transitions, 1903 flow. Second operand 11 states and 216 transitions. [2024-06-04 14:41:46,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 269 transitions, 2945 flow [2024-06-04 14:41:46,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 269 transitions, 2755 flow, removed 76 selfloop flow, removed 7 redundant places. [2024-06-04 14:41:46,927 INFO L231 Difference]: Finished difference. Result has 189 places, 221 transitions, 1976 flow [2024-06-04 14:41:46,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1768, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1976, PETRI_PLACES=189, PETRI_TRANSITIONS=221} [2024-06-04 14:41:46,929 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 144 predicate places. [2024-06-04 14:41:46,929 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 221 transitions, 1976 flow [2024-06-04 14:41:46,929 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 14:41:46,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:46,929 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 14:41:46,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-04 14:41:46,930 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:46,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:46,931 INFO L85 PathProgramCache]: Analyzing trace with hash 198255183, now seen corresponding path program 3 times [2024-06-04 14:41:46,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:46,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012549468] [2024-06-04 14:41:46,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:46,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:46,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:48,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:48,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:48,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012549468] [2024-06-04 14:41:48,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012549468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:48,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:48,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:41:48,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882950737] [2024-06-04 14:41:48,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:48,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:41:48,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:48,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:41:48,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:41:48,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:48,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 221 transitions, 1976 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 14:41:48,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:48,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:48,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:49,731 INFO L124 PetriNetUnfolderBase]: 2891/4418 cut-off events. [2024-06-04 14:41:49,732 INFO L125 PetriNetUnfolderBase]: For 625918/625930 co-relation queries the response was YES. [2024-06-04 14:41:49,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41919 conditions, 4418 events. 2891/4418 cut-off events. For 625918/625930 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 22777 event pairs, 755 based on Foata normal form. 8/4417 useless extension candidates. Maximal degree in co-relation 41828. Up to 4059 conditions per place. [2024-06-04 14:41:49,775 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 225 selfloop transitions, 36 changer transitions 0/272 dead transitions. [2024-06-04 14:41:49,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 272 transitions, 2682 flow [2024-06-04 14:41:49,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:41:49,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:41:49,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 226 transitions. [2024-06-04 14:41:49,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42803030303030304 [2024-06-04 14:41:49,777 INFO L175 Difference]: Start difference. First operand has 189 places, 221 transitions, 1976 flow. Second operand 12 states and 226 transitions. [2024-06-04 14:41:49,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 272 transitions, 2682 flow [2024-06-04 14:41:50,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 272 transitions, 2568 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-04 14:41:50,391 INFO L231 Difference]: Finished difference. Result has 196 places, 223 transitions, 2008 flow [2024-06-04 14:41:50,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1862, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2008, PETRI_PLACES=196, PETRI_TRANSITIONS=223} [2024-06-04 14:41:50,392 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 151 predicate places. [2024-06-04 14:41:50,392 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 223 transitions, 2008 flow [2024-06-04 14:41:50,392 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 14:41:50,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:50,392 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 14:41:50,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-04 14:41:50,392 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:50,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:50,393 INFO L85 PathProgramCache]: Analyzing trace with hash 198255338, now seen corresponding path program 1 times [2024-06-04 14:41:50,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:50,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570227023] [2024-06-04 14:41:50,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:50,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:51,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:51,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:51,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570227023] [2024-06-04 14:41:51,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570227023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:51,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:51,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:41:51,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198564061] [2024-06-04 14:41:51,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:51,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:41:51,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:51,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:41:51,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:41:52,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:52,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 223 transitions, 2008 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 14:41:52,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:52,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:52,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:53,353 INFO L124 PetriNetUnfolderBase]: 2946/4492 cut-off events. [2024-06-04 14:41:53,353 INFO L125 PetriNetUnfolderBase]: For 652579/652579 co-relation queries the response was YES. [2024-06-04 14:41:53,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43042 conditions, 4492 events. 2946/4492 cut-off events. For 652579/652579 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 23161 event pairs, 745 based on Foata normal form. 4/4483 useless extension candidates. Maximal degree in co-relation 42949. Up to 4121 conditions per place. [2024-06-04 14:41:53,404 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 231 selfloop transitions, 38 changer transitions 0/280 dead transitions. [2024-06-04 14:41:53,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 280 transitions, 2776 flow [2024-06-04 14:41:53,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:41:53,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:41:53,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 245 transitions. [2024-06-04 14:41:53,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42832167832167833 [2024-06-04 14:41:53,406 INFO L175 Difference]: Start difference. First operand has 196 places, 223 transitions, 2008 flow. Second operand 13 states and 245 transitions. [2024-06-04 14:41:53,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 280 transitions, 2776 flow [2024-06-04 14:41:54,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 280 transitions, 2660 flow, removed 25 selfloop flow, removed 10 redundant places. [2024-06-04 14:41:54,144 INFO L231 Difference]: Finished difference. Result has 199 places, 226 transitions, 2074 flow [2024-06-04 14:41:54,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1892, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2074, PETRI_PLACES=199, PETRI_TRANSITIONS=226} [2024-06-04 14:41:54,144 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 154 predicate places. [2024-06-04 14:41:54,144 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 226 transitions, 2074 flow [2024-06-04 14:41:54,144 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 14:41:54,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:54,145 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 14:41:54,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-04 14:41:54,145 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:54,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:54,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1742213179, now seen corresponding path program 4 times [2024-06-04 14:41:54,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:54,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438933716] [2024-06-04 14:41:54,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:54,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:54,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:55,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:55,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:55,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438933716] [2024-06-04 14:41:55,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438933716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:55,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:55,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:41:55,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359640314] [2024-06-04 14:41:55,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:55,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:41:55,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:55,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:41:55,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:41:55,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:55,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 226 transitions, 2074 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 14:41:55,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:55,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:55,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:56,815 INFO L124 PetriNetUnfolderBase]: 2919/4457 cut-off events. [2024-06-04 14:41:56,822 INFO L125 PetriNetUnfolderBase]: For 657548/657568 co-relation queries the response was YES. [2024-06-04 14:41:56,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42945 conditions, 4457 events. 2919/4457 cut-off events. For 657548/657568 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 22977 event pairs, 742 based on Foata normal form. 4/4448 useless extension candidates. Maximal degree in co-relation 42851. Up to 4107 conditions per place. [2024-06-04 14:41:56,942 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 227 selfloop transitions, 27 changer transitions 0/265 dead transitions. [2024-06-04 14:41:56,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 265 transitions, 2680 flow [2024-06-04 14:41:56,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:41:56,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:41:56,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-04 14:41:56,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2024-06-04 14:41:56,944 INFO L175 Difference]: Start difference. First operand has 199 places, 226 transitions, 2074 flow. Second operand 10 states and 192 transitions. [2024-06-04 14:41:56,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 265 transitions, 2680 flow [2024-06-04 14:41:57,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 265 transitions, 2482 flow, removed 64 selfloop flow, removed 11 redundant places. [2024-06-04 14:41:57,538 INFO L231 Difference]: Finished difference. Result has 198 places, 226 transitions, 1937 flow [2024-06-04 14:41:57,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1876, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1937, PETRI_PLACES=198, PETRI_TRANSITIONS=226} [2024-06-04 14:41:57,539 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 153 predicate places. [2024-06-04 14:41:57,539 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 226 transitions, 1937 flow [2024-06-04 14:41:57,539 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 14:41:57,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:57,539 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 14:41:57,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-04 14:41:57,540 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:57,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:57,540 INFO L85 PathProgramCache]: Analyzing trace with hash -435997753, now seen corresponding path program 5 times [2024-06-04 14:41:57,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:57,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323446334] [2024-06-04 14:41:57,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:57,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:57,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:59,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:59,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:59,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323446334] [2024-06-04 14:41:59,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323446334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:59,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:59,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:41:59,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835196633] [2024-06-04 14:41:59,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:59,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:41:59,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:59,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:41:59,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:41:59,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:59,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 226 transitions, 1937 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:59,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:59,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:59,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:00,277 INFO L124 PetriNetUnfolderBase]: 2961/4524 cut-off events. [2024-06-04 14:42:00,278 INFO L125 PetriNetUnfolderBase]: For 688990/689012 co-relation queries the response was YES. [2024-06-04 14:42:00,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43835 conditions, 4524 events. 2961/4524 cut-off events. For 688990/689012 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 23437 event pairs, 752 based on Foata normal form. 4/4515 useless extension candidates. Maximal degree in co-relation 43740. Up to 4018 conditions per place. [2024-06-04 14:42:00,333 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 192 selfloop transitions, 65 changer transitions 0/268 dead transitions. [2024-06-04 14:42:00,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 268 transitions, 2953 flow [2024-06-04 14:42:00,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:00,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:00,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-04 14:42:00,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-04 14:42:00,336 INFO L175 Difference]: Start difference. First operand has 198 places, 226 transitions, 1937 flow. Second operand 10 states and 198 transitions. [2024-06-04 14:42:00,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 268 transitions, 2953 flow [2024-06-04 14:42:01,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 268 transitions, 2847 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-04 14:42:01,294 INFO L231 Difference]: Finished difference. Result has 199 places, 230 transitions, 2140 flow [2024-06-04 14:42:01,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1831, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2140, PETRI_PLACES=199, PETRI_TRANSITIONS=230} [2024-06-04 14:42:01,295 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 154 predicate places. [2024-06-04 14:42:01,295 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 230 transitions, 2140 flow [2024-06-04 14:42:01,295 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 14:42:01,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:01,295 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 14:42:01,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-04 14:42:01,295 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:42:01,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:01,296 INFO L85 PathProgramCache]: Analyzing trace with hash -435993878, now seen corresponding path program 2 times [2024-06-04 14:42:01,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:01,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169112469] [2024-06-04 14:42:01,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:01,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:02,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:02,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:02,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169112469] [2024-06-04 14:42:02,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169112469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:02,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:02,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:02,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718087173] [2024-06-04 14:42:02,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:02,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:02,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:02,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:02,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:02,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:02,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 230 transitions, 2140 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 14:42:02,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:02,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:02,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:04,036 INFO L124 PetriNetUnfolderBase]: 3015/4607 cut-off events. [2024-06-04 14:42:04,037 INFO L125 PetriNetUnfolderBase]: For 724516/724538 co-relation queries the response was YES. [2024-06-04 14:42:04,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45370 conditions, 4607 events. 3015/4607 cut-off events. For 724516/724538 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 24032 event pairs, 724 based on Foata normal form. 4/4598 useless extension candidates. Maximal degree in co-relation 45275. Up to 3808 conditions per place. [2024-06-04 14:42:04,088 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 174 selfloop transitions, 101 changer transitions 0/286 dead transitions. [2024-06-04 14:42:04,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 286 transitions, 3264 flow [2024-06-04 14:42:04,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:42:04,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:42:04,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 242 transitions. [2024-06-04 14:42:04,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-04 14:42:04,090 INFO L175 Difference]: Start difference. First operand has 199 places, 230 transitions, 2140 flow. Second operand 12 states and 242 transitions. [2024-06-04 14:42:04,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 286 transitions, 3264 flow [2024-06-04 14:42:05,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 286 transitions, 3082 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-04 14:42:05,174 INFO L231 Difference]: Finished difference. Result has 205 places, 236 transitions, 2372 flow [2024-06-04 14:42:05,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1958, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2372, PETRI_PLACES=205, PETRI_TRANSITIONS=236} [2024-06-04 14:42:05,174 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 160 predicate places. [2024-06-04 14:42:05,175 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 236 transitions, 2372 flow [2024-06-04 14:42:05,175 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 14:42:05,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:05,175 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 14:42:05,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-04 14:42:05,175 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:42:05,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:05,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1886257314, now seen corresponding path program 3 times [2024-06-04 14:42:05,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:05,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404392865] [2024-06-04 14:42:05,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:05,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:06,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:06,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:06,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404392865] [2024-06-04 14:42:06,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404392865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:06,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:06,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:06,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502627629] [2024-06-04 14:42:06,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:06,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:06,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:06,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:06,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:06,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:06,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 236 transitions, 2372 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 14:42:06,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:06,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:06,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:07,728 INFO L124 PetriNetUnfolderBase]: 3044/4657 cut-off events. [2024-06-04 14:42:07,728 INFO L125 PetriNetUnfolderBase]: For 749470/749486 co-relation queries the response was YES. [2024-06-04 14:42:07,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46738 conditions, 4657 events. 3044/4657 cut-off events. For 749470/749486 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 24487 event pairs, 659 based on Foata normal form. 4/4656 useless extension candidates. Maximal degree in co-relation 46641. Up to 3897 conditions per place. [2024-06-04 14:42:07,773 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 180 selfloop transitions, 93 changer transitions 0/284 dead transitions. [2024-06-04 14:42:07,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 284 transitions, 3486 flow [2024-06-04 14:42:07,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:07,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:07,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2024-06-04 14:42:07,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-06-04 14:42:07,775 INFO L175 Difference]: Start difference. First operand has 205 places, 236 transitions, 2372 flow. Second operand 10 states and 205 transitions. [2024-06-04 14:42:07,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 284 transitions, 3486 flow [2024-06-04 14:42:08,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 284 transitions, 3233 flow, removed 74 selfloop flow, removed 8 redundant places. [2024-06-04 14:42:08,365 INFO L231 Difference]: Finished difference. Result has 208 places, 242 transitions, 2576 flow [2024-06-04 14:42:08,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2147, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2576, PETRI_PLACES=208, PETRI_TRANSITIONS=242} [2024-06-04 14:42:08,365 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 163 predicate places. [2024-06-04 14:42:08,365 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 242 transitions, 2576 flow [2024-06-04 14:42:08,366 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 14:42:08,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:08,366 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 14:42:08,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-04 14:42:08,366 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 14:42:08,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:08,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1750974725, now seen corresponding path program 6 times [2024-06-04 14:42:08,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:08,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528297858] [2024-06-04 14:42:08,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:08,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:09,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:09,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:09,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528297858] [2024-06-04 14:42:09,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528297858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:09,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:09,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:09,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177428517] [2024-06-04 14:42:09,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:09,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:09,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:09,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:09,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:09,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:09,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 242 transitions, 2576 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 14:42:09,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:09,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:09,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:10,870 INFO L124 PetriNetUnfolderBase]: 3044/4660 cut-off events. [2024-06-04 14:42:10,870 INFO L125 PetriNetUnfolderBase]: For 762919/762921 co-relation queries the response was YES. [2024-06-04 14:42:10,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47393 conditions, 4660 events. 3044/4660 cut-off events. For 762919/762921 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 24506 event pairs, 747 based on Foata normal form. 4/4663 useless extension candidates. Maximal degree in co-relation 47293. Up to 4198 conditions per place. [2024-06-04 14:42:10,925 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 206 selfloop transitions, 62 changer transitions 0/279 dead transitions. [2024-06-04 14:42:10,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 279 transitions, 3256 flow [2024-06-04 14:42:10,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:10,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:10,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-04 14:42:10,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-04 14:42:10,927 INFO L175 Difference]: Start difference. First operand has 208 places, 242 transitions, 2576 flow. Second operand 10 states and 195 transitions. [2024-06-04 14:42:10,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 279 transitions, 3256 flow [2024-06-04 14:42:11,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 279 transitions, 3059 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-04 14:42:11,945 INFO L231 Difference]: Finished difference. Result has 211 places, 244 transitions, 2570 flow [2024-06-04 14:42:11,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2379, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2570, PETRI_PLACES=211, PETRI_TRANSITIONS=244} [2024-06-04 14:42:11,946 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 166 predicate places. [2024-06-04 14:42:11,946 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 244 transitions, 2570 flow [2024-06-04 14:42:11,946 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 14:42:11,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:11,946 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 14:42:11,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-04 14:42:11,946 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 14:42:11,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:11,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1751118875, now seen corresponding path program 7 times [2024-06-04 14:42:11,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:11,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745203912] [2024-06-04 14:42:11,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:11,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:13,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:13,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:13,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745203912] [2024-06-04 14:42:13,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745203912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:13,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:13,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:13,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030058515] [2024-06-04 14:42:13,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:13,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:13,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:13,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:13,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:13,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:13,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 244 transitions, 2570 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 14:42:13,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:13,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:13,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:14,566 INFO L124 PetriNetUnfolderBase]: 3072/4698 cut-off events. [2024-06-04 14:42:14,566 INFO L125 PetriNetUnfolderBase]: For 786698/786700 co-relation queries the response was YES. [2024-06-04 14:42:14,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47695 conditions, 4698 events. 3072/4698 cut-off events. For 786698/786700 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 24660 event pairs, 722 based on Foata normal form. 4/4701 useless extension candidates. Maximal degree in co-relation 47594. Up to 4266 conditions per place. [2024-06-04 14:42:14,621 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 216 selfloop transitions, 54 changer transitions 0/281 dead transitions. [2024-06-04 14:42:14,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 281 transitions, 3258 flow [2024-06-04 14:42:14,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:14,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:14,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-04 14:42:14,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409090909090909 [2024-06-04 14:42:14,622 INFO L175 Difference]: Start difference. First operand has 211 places, 244 transitions, 2570 flow. Second operand 10 states and 194 transitions. [2024-06-04 14:42:14,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 281 transitions, 3258 flow [2024-06-04 14:42:15,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 281 transitions, 3089 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-04 14:42:15,594 INFO L231 Difference]: Finished difference. Result has 213 places, 246 transitions, 2580 flow [2024-06-04 14:42:15,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2401, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2580, PETRI_PLACES=213, PETRI_TRANSITIONS=246} [2024-06-04 14:42:15,595 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 168 predicate places. [2024-06-04 14:42:15,595 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 246 transitions, 2580 flow [2024-06-04 14:42:15,595 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 14:42:15,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:15,595 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 14:42:15,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-04 14:42:15,595 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 14:42:15,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:15,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1756688800, now seen corresponding path program 4 times [2024-06-04 14:42:15,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:15,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181447267] [2024-06-04 14:42:15,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:15,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:17,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:17,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:17,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181447267] [2024-06-04 14:42:17,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181447267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:17,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:17,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:17,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865389845] [2024-06-04 14:42:17,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:17,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:17,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:17,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:17,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:17,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:17,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 246 transitions, 2580 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 14:42:17,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:17,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:17,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:18,270 INFO L124 PetriNetUnfolderBase]: 3118/4773 cut-off events. [2024-06-04 14:42:18,270 INFO L125 PetriNetUnfolderBase]: For 820120/820122 co-relation queries the response was YES. [2024-06-04 14:42:18,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48995 conditions, 4773 events. 3118/4773 cut-off events. For 820120/820122 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 25195 event pairs, 639 based on Foata normal form. 4/4774 useless extension candidates. Maximal degree in co-relation 48893. Up to 3683 conditions per place. [2024-06-04 14:42:18,320 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 158 selfloop transitions, 120 changer transitions 0/289 dead transitions. [2024-06-04 14:42:18,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 289 transitions, 3942 flow [2024-06-04 14:42:18,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:42:18,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:42:18,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 191 transitions. [2024-06-04 14:42:18,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823232323232323 [2024-06-04 14:42:18,321 INFO L175 Difference]: Start difference. First operand has 213 places, 246 transitions, 2580 flow. Second operand 9 states and 191 transitions. [2024-06-04 14:42:18,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 289 transitions, 3942 flow [2024-06-04 14:42:19,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 289 transitions, 3785 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-04 14:42:19,121 INFO L231 Difference]: Finished difference. Result has 215 places, 252 transitions, 2917 flow [2024-06-04 14:42:19,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2423, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2917, PETRI_PLACES=215, PETRI_TRANSITIONS=252} [2024-06-04 14:42:19,122 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 170 predicate places. [2024-06-04 14:42:19,122 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 252 transitions, 2917 flow [2024-06-04 14:42:19,122 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 14:42:19,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:19,122 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 14:42:19,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-04 14:42:19,123 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 14:42:19,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:19,123 INFO L85 PathProgramCache]: Analyzing trace with hash -275673837, now seen corresponding path program 8 times [2024-06-04 14:42:19,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:19,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739253782] [2024-06-04 14:42:19,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:19,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:20,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:20,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:20,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739253782] [2024-06-04 14:42:20,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739253782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:20,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:20,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:20,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590142076] [2024-06-04 14:42:20,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:20,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:20,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:20,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:20,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:20,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:20,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 252 transitions, 2917 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 14:42:20,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:20,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:20,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:21,827 INFO L124 PetriNetUnfolderBase]: 3091/4730 cut-off events. [2024-06-04 14:42:21,827 INFO L125 PetriNetUnfolderBase]: For 829801/829803 co-relation queries the response was YES. [2024-06-04 14:42:21,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49198 conditions, 4730 events. 3091/4730 cut-off events. For 829801/829803 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 24907 event pairs, 752 based on Foata normal form. 4/4733 useless extension candidates. Maximal degree in co-relation 49094. Up to 4295 conditions per place. [2024-06-04 14:42:21,909 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 221 selfloop transitions, 55 changer transitions 0/287 dead transitions. [2024-06-04 14:42:21,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 287 transitions, 3557 flow [2024-06-04 14:42:21,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:21,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:21,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-04 14:42:21,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43863636363636366 [2024-06-04 14:42:21,910 INFO L175 Difference]: Start difference. First operand has 215 places, 252 transitions, 2917 flow. Second operand 10 states and 193 transitions. [2024-06-04 14:42:21,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 287 transitions, 3557 flow [2024-06-04 14:42:23,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 287 transitions, 3271 flow, removed 63 selfloop flow, removed 6 redundant places. [2024-06-04 14:42:23,082 INFO L231 Difference]: Finished difference. Result has 219 places, 252 transitions, 2748 flow [2024-06-04 14:42:23,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2631, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2748, PETRI_PLACES=219, PETRI_TRANSITIONS=252} [2024-06-04 14:42:23,083 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 174 predicate places. [2024-06-04 14:42:23,083 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 252 transitions, 2748 flow [2024-06-04 14:42:23,083 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 14:42:23,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:23,083 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 14:42:23,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-04 14:42:23,084 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 14:42:23,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:23,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1756481410, now seen corresponding path program 5 times [2024-06-04 14:42:23,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:23,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39364017] [2024-06-04 14:42:23,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:23,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:24,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:24,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:24,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39364017] [2024-06-04 14:42:24,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39364017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:24,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:24,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:24,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209973329] [2024-06-04 14:42:24,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:24,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:24,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:24,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:24,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:24,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:24,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 252 transitions, 2748 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 14:42:24,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:24,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:24,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:25,738 INFO L124 PetriNetUnfolderBase]: 3081/4716 cut-off events. [2024-06-04 14:42:25,738 INFO L125 PetriNetUnfolderBase]: For 818307/818309 co-relation queries the response was YES. [2024-06-04 14:42:25,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48238 conditions, 4716 events. 3081/4716 cut-off events. For 818307/818309 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 24803 event pairs, 704 based on Foata normal form. 4/4719 useless extension candidates. Maximal degree in co-relation 48134. Up to 3916 conditions per place. [2024-06-04 14:42:25,784 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 182 selfloop transitions, 101 changer transitions 0/294 dead transitions. [2024-06-04 14:42:25,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 294 transitions, 3696 flow [2024-06-04 14:42:25,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:25,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:25,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 206 transitions. [2024-06-04 14:42:25,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681818181818182 [2024-06-04 14:42:25,786 INFO L175 Difference]: Start difference. First operand has 219 places, 252 transitions, 2748 flow. Second operand 10 states and 206 transitions. [2024-06-04 14:42:25,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 294 transitions, 3696 flow [2024-06-04 14:42:26,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 294 transitions, 3509 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-04 14:42:26,703 INFO L231 Difference]: Finished difference. Result has 220 places, 252 transitions, 2771 flow [2024-06-04 14:42:26,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2561, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2771, PETRI_PLACES=220, PETRI_TRANSITIONS=252} [2024-06-04 14:42:26,704 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 175 predicate places. [2024-06-04 14:42:26,704 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 252 transitions, 2771 flow [2024-06-04 14:42:26,704 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 14:42:26,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:26,704 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 14:42:26,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-04 14:42:26,704 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:42:26,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:26,705 INFO L85 PathProgramCache]: Analyzing trace with hash 224571712, now seen corresponding path program 1 times [2024-06-04 14:42:26,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:26,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254227996] [2024-06-04 14:42:26,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:26,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:27,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:27,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:27,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254227996] [2024-06-04 14:42:27,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254227996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:27,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:27,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:42:27,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251938036] [2024-06-04 14:42:27,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:27,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:42:27,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:27,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:42:27,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:42:27,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:27,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 252 transitions, 2771 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 14:42:27,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:27,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:27,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:28,670 INFO L124 PetriNetUnfolderBase]: 3111/4762 cut-off events. [2024-06-04 14:42:28,670 INFO L125 PetriNetUnfolderBase]: For 864915/864927 co-relation queries the response was YES. [2024-06-04 14:42:28,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49080 conditions, 4762 events. 3111/4762 cut-off events. For 864915/864927 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 24785 event pairs, 843 based on Foata normal form. 14/4751 useless extension candidates. Maximal degree in co-relation 48975. Up to 4393 conditions per place. [2024-06-04 14:42:28,721 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 215 selfloop transitions, 25 changer transitions 0/282 dead transitions. [2024-06-04 14:42:28,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 282 transitions, 3531 flow [2024-06-04 14:42:28,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:42:28,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:42:28,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-04 14:42:28,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4448051948051948 [2024-06-04 14:42:28,729 INFO L175 Difference]: Start difference. First operand has 220 places, 252 transitions, 2771 flow. Second operand 7 states and 137 transitions. [2024-06-04 14:42:28,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 282 transitions, 3531 flow [2024-06-04 14:42:29,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 282 transitions, 3340 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-04 14:42:29,668 INFO L231 Difference]: Finished difference. Result has 220 places, 261 transitions, 2746 flow [2024-06-04 14:42:29,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2580, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2746, PETRI_PLACES=220, PETRI_TRANSITIONS=261} [2024-06-04 14:42:29,669 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 175 predicate places. [2024-06-04 14:42:29,669 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 261 transitions, 2746 flow [2024-06-04 14:42:29,669 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 14:42:29,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:29,669 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 14:42:29,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-04 14:42:29,669 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 14:42:29,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:29,670 INFO L85 PathProgramCache]: Analyzing trace with hash 141950994, now seen corresponding path program 6 times [2024-06-04 14:42:29,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:29,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445975507] [2024-06-04 14:42:29,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:29,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:29,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:30,943 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 14:42:30,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:30,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445975507] [2024-06-04 14:42:30,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445975507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:30,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:30,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:30,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604712899] [2024-06-04 14:42:30,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:30,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:30,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:30,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:30,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:31,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:31,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 261 transitions, 2746 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 14:42:31,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:31,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:31,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:32,215 INFO L124 PetriNetUnfolderBase]: 3163/4831 cut-off events. [2024-06-04 14:42:32,215 INFO L125 PetriNetUnfolderBase]: For 876401/876401 co-relation queries the response was YES. [2024-06-04 14:42:32,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50260 conditions, 4831 events. 3163/4831 cut-off events. For 876401/876401 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 25427 event pairs, 748 based on Foata normal form. 4/4829 useless extension candidates. Maximal degree in co-relation 50153. Up to 4305 conditions per place. [2024-06-04 14:42:32,270 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 230 selfloop transitions, 58 changer transitions 0/299 dead transitions. [2024-06-04 14:42:32,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 299 transitions, 3530 flow [2024-06-04 14:42:32,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:32,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:32,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-04 14:42:32,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409090909090909 [2024-06-04 14:42:32,272 INFO L175 Difference]: Start difference. First operand has 220 places, 261 transitions, 2746 flow. Second operand 10 states and 194 transitions. [2024-06-04 14:42:32,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 299 transitions, 3530 flow [2024-06-04 14:42:33,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 299 transitions, 3489 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-04 14:42:33,566 INFO L231 Difference]: Finished difference. Result has 228 places, 264 transitions, 2949 flow [2024-06-04 14:42:33,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2705, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2949, PETRI_PLACES=228, PETRI_TRANSITIONS=264} [2024-06-04 14:42:33,567 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 183 predicate places. [2024-06-04 14:42:33,567 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 264 transitions, 2949 flow [2024-06-04 14:42:33,567 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 14:42:33,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:33,567 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 14:42:33,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-04 14:42:33,568 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:42:33,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:33,568 INFO L85 PathProgramCache]: Analyzing trace with hash 141743449, now seen corresponding path program 9 times [2024-06-04 14:42:33,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:33,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097681042] [2024-06-04 14:42:33,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:33,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:34,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:34,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:34,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097681042] [2024-06-04 14:42:34,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097681042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:34,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:34,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:34,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100248494] [2024-06-04 14:42:34,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:34,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:34,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:34,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:34,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:35,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:35,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 264 transitions, 2949 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 14:42:35,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:35,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:35,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:36,253 INFO L124 PetriNetUnfolderBase]: 3180/4853 cut-off events. [2024-06-04 14:42:36,254 INFO L125 PetriNetUnfolderBase]: For 902244/902244 co-relation queries the response was YES. [2024-06-04 14:42:36,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51061 conditions, 4853 events. 3180/4853 cut-off events. For 902244/902244 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 25520 event pairs, 768 based on Foata normal form. 4/4851 useless extension candidates. Maximal degree in co-relation 50951. Up to 4519 conditions per place. [2024-06-04 14:42:36,307 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 253 selfloop transitions, 34 changer transitions 0/298 dead transitions. [2024-06-04 14:42:36,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 298 transitions, 3697 flow [2024-06-04 14:42:36,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:36,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:36,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-04 14:42:36,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-04 14:42:36,309 INFO L175 Difference]: Start difference. First operand has 228 places, 264 transitions, 2949 flow. Second operand 10 states and 187 transitions. [2024-06-04 14:42:36,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 298 transitions, 3697 flow [2024-06-04 14:42:37,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 298 transitions, 3483 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-04 14:42:37,626 INFO L231 Difference]: Finished difference. Result has 230 places, 266 transitions, 2908 flow [2024-06-04 14:42:37,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2735, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2908, PETRI_PLACES=230, PETRI_TRANSITIONS=266} [2024-06-04 14:42:37,626 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 185 predicate places. [2024-06-04 14:42:37,626 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 266 transitions, 2908 flow [2024-06-04 14:42:37,627 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 14:42:37,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:37,627 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 14:42:37,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-04 14:42:37,627 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:42:37,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:37,627 INFO L85 PathProgramCache]: Analyzing trace with hash 141749184, now seen corresponding path program 7 times [2024-06-04 14:42:37,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:37,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974091424] [2024-06-04 14:42:37,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:37,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:38,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:38,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:38,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974091424] [2024-06-04 14:42:38,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974091424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:38,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:38,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:38,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379021661] [2024-06-04 14:42:38,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:38,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:38,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:38,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:38,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:39,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:39,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 266 transitions, 2908 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 14:42:39,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:39,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:39,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:40,158 INFO L124 PetriNetUnfolderBase]: 3202/4890 cut-off events. [2024-06-04 14:42:40,158 INFO L125 PetriNetUnfolderBase]: For 927504/927504 co-relation queries the response was YES. [2024-06-04 14:42:40,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51552 conditions, 4890 events. 3202/4890 cut-off events. For 927504/927504 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 25834 event pairs, 746 based on Foata normal form. 4/4888 useless extension candidates. Maximal degree in co-relation 51441. Up to 4331 conditions per place. [2024-06-04 14:42:40,217 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 235 selfloop transitions, 62 changer transitions 0/308 dead transitions. [2024-06-04 14:42:40,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 308 transitions, 4010 flow [2024-06-04 14:42:40,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:40,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:40,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-04 14:42:40,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45227272727272727 [2024-06-04 14:42:40,219 INFO L175 Difference]: Start difference. First operand has 230 places, 266 transitions, 2908 flow. Second operand 10 states and 199 transitions. [2024-06-04 14:42:40,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 308 transitions, 4010 flow [2024-06-04 14:42:41,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 308 transitions, 3855 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-06-04 14:42:41,708 INFO L231 Difference]: Finished difference. Result has 232 places, 269 transitions, 3011 flow [2024-06-04 14:42:41,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2753, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3011, PETRI_PLACES=232, PETRI_TRANSITIONS=269} [2024-06-04 14:42:41,708 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 187 predicate places. [2024-06-04 14:42:41,709 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 269 transitions, 3011 flow [2024-06-04 14:42:41,709 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 14:42:41,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:41,709 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 14:42:41,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-04 14:42:41,709 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 14:42:41,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:41,709 INFO L85 PathProgramCache]: Analyzing trace with hash 141743604, now seen corresponding path program 8 times [2024-06-04 14:42:41,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:41,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660927057] [2024-06-04 14:42:41,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:41,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:42,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:42,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:42,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660927057] [2024-06-04 14:42:42,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660927057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:42,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:42,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:42,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322098372] [2024-06-04 14:42:42,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:42,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:42,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:42,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:42,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:43,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:43,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 269 transitions, 3011 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 14:42:43,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:43,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:43,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:44,276 INFO L124 PetriNetUnfolderBase]: 3224/4927 cut-off events. [2024-06-04 14:42:44,277 INFO L125 PetriNetUnfolderBase]: For 953320/953320 co-relation queries the response was YES. [2024-06-04 14:42:44,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52274 conditions, 4927 events. 3224/4927 cut-off events. For 953320/953320 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 26105 event pairs, 751 based on Foata normal form. 4/4925 useless extension candidates. Maximal degree in co-relation 52162. Up to 4313 conditions per place. [2024-06-04 14:42:44,338 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 230 selfloop transitions, 70 changer transitions 0/311 dead transitions. [2024-06-04 14:42:44,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 311 transitions, 4129 flow [2024-06-04 14:42:44,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:44,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:44,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-04 14:42:44,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:42:44,340 INFO L175 Difference]: Start difference. First operand has 232 places, 269 transitions, 3011 flow. Second operand 10 states and 200 transitions. [2024-06-04 14:42:44,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 311 transitions, 4129 flow [2024-06-04 14:42:46,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 311 transitions, 3824 flow, removed 58 selfloop flow, removed 9 redundant places. [2024-06-04 14:42:46,090 INFO L231 Difference]: Finished difference. Result has 233 places, 272 transitions, 2986 flow [2024-06-04 14:42:46,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2706, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2986, PETRI_PLACES=233, PETRI_TRANSITIONS=272} [2024-06-04 14:42:46,090 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 188 predicate places. [2024-06-04 14:42:46,091 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 272 transitions, 2986 flow [2024-06-04 14:42:46,091 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 14:42:46,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:46,091 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 14:42:46,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-04 14:42:46,091 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 14:42:46,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:46,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1704150433, now seen corresponding path program 10 times [2024-06-04 14:42:46,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:46,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116228797] [2024-06-04 14:42:46,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:46,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:47,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:47,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:47,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116228797] [2024-06-04 14:42:47,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116228797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:47,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:47,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:47,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128378256] [2024-06-04 14:42:47,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:47,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:47,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:47,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:47,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:47,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:47,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 272 transitions, 2986 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 14:42:47,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:47,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:47,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:48,734 INFO L124 PetriNetUnfolderBase]: 3241/4954 cut-off events. [2024-06-04 14:42:48,735 INFO L125 PetriNetUnfolderBase]: For 977080/977080 co-relation queries the response was YES. [2024-06-04 14:42:48,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52659 conditions, 4954 events. 3241/4954 cut-off events. For 977080/977080 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 26263 event pairs, 763 based on Foata normal form. 4/4952 useless extension candidates. Maximal degree in co-relation 52546. Up to 4508 conditions per place. [2024-06-04 14:42:48,792 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 252 selfloop transitions, 48 changer transitions 0/311 dead transitions. [2024-06-04 14:42:48,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 311 transitions, 4154 flow [2024-06-04 14:42:48,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:48,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:48,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-04 14:42:48,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:42:48,801 INFO L175 Difference]: Start difference. First operand has 233 places, 272 transitions, 2986 flow. Second operand 10 states and 190 transitions. [2024-06-04 14:42:48,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 311 transitions, 4154 flow [2024-06-04 14:42:50,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 311 transitions, 3904 flow, removed 57 selfloop flow, removed 8 redundant places. [2024-06-04 14:42:50,508 INFO L231 Difference]: Finished difference. Result has 235 places, 276 transitions, 3039 flow [2024-06-04 14:42:50,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2736, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3039, PETRI_PLACES=235, PETRI_TRANSITIONS=276} [2024-06-04 14:42:50,508 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 190 predicate places. [2024-06-04 14:42:50,508 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 276 transitions, 3039 flow [2024-06-04 14:42:50,509 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 14:42:50,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:50,509 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 14:42:50,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-04 14:42:50,509 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 14:42:50,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:50,509 INFO L85 PathProgramCache]: Analyzing trace with hash 136381069, now seen corresponding path program 11 times [2024-06-04 14:42:50,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:50,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280309091] [2024-06-04 14:42:50,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:50,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:51,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:51,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:51,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280309091] [2024-06-04 14:42:51,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280309091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:51,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:51,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:51,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52722413] [2024-06-04 14:42:51,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:51,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:51,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:51,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:51,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:52,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:52,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 276 transitions, 3039 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 14:42:52,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:52,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:52,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:53,192 INFO L124 PetriNetUnfolderBase]: 3269/4997 cut-off events. [2024-06-04 14:42:53,193 INFO L125 PetriNetUnfolderBase]: For 1003235/1003235 co-relation queries the response was YES. [2024-06-04 14:42:53,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53103 conditions, 4997 events. 3269/4997 cut-off events. For 1003235/1003235 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 26572 event pairs, 768 based on Foata normal form. 4/4995 useless extension candidates. Maximal degree in co-relation 52989. Up to 4653 conditions per place. [2024-06-04 14:42:53,251 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 267 selfloop transitions, 35 changer transitions 0/313 dead transitions. [2024-06-04 14:42:53,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 313 transitions, 3850 flow [2024-06-04 14:42:53,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:53,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:53,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-04 14:42:53,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42272727272727273 [2024-06-04 14:42:53,253 INFO L175 Difference]: Start difference. First operand has 235 places, 276 transitions, 3039 flow. Second operand 10 states and 186 transitions. [2024-06-04 14:42:53,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 313 transitions, 3850 flow [2024-06-04 14:42:54,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 313 transitions, 3618 flow, removed 89 selfloop flow, removed 6 redundant places. [2024-06-04 14:42:54,779 INFO L231 Difference]: Finished difference. Result has 240 places, 281 transitions, 3025 flow [2024-06-04 14:42:54,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2852, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3025, PETRI_PLACES=240, PETRI_TRANSITIONS=281} [2024-06-04 14:42:54,779 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 195 predicate places. [2024-06-04 14:42:54,779 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 281 transitions, 3025 flow [2024-06-04 14:42:54,780 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 14:42:54,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:54,780 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 14:42:54,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-04 14:42:54,780 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 14:42:54,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:54,781 INFO L85 PathProgramCache]: Analyzing trace with hash 136236919, now seen corresponding path program 12 times [2024-06-04 14:42:54,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:54,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608044477] [2024-06-04 14:42:54,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:54,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:56,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:56,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:56,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608044477] [2024-06-04 14:42:56,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608044477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:56,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:56,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:56,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695575570] [2024-06-04 14:42:56,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:56,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:56,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:56,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:56,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:56,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:56,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 281 transitions, 3025 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 14:42:56,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:56,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:56,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:57,447 INFO L124 PetriNetUnfolderBase]: 3286/5024 cut-off events. [2024-06-04 14:42:57,447 INFO L125 PetriNetUnfolderBase]: For 1021982/1021982 co-relation queries the response was YES. [2024-06-04 14:42:57,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53252 conditions, 5024 events. 3286/5024 cut-off events. For 1021982/1021982 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 26704 event pairs, 768 based on Foata normal form. 4/5022 useless extension candidates. Maximal degree in co-relation 53135. Up to 4644 conditions per place. [2024-06-04 14:42:57,513 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 258 selfloop transitions, 46 changer transitions 0/315 dead transitions. [2024-06-04 14:42:57,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 315 transitions, 3777 flow [2024-06-04 14:42:57,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:57,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:57,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-04 14:42:57,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-04 14:42:57,514 INFO L175 Difference]: Start difference. First operand has 240 places, 281 transitions, 3025 flow. Second operand 10 states and 187 transitions. [2024-06-04 14:42:57,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 315 transitions, 3777 flow [2024-06-04 14:42:58,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 315 transitions, 3662 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-04 14:42:58,962 INFO L231 Difference]: Finished difference. Result has 243 places, 283 transitions, 3077 flow [2024-06-04 14:42:58,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2910, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3077, PETRI_PLACES=243, PETRI_TRANSITIONS=283} [2024-06-04 14:42:58,963 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 198 predicate places. [2024-06-04 14:42:58,963 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 283 transitions, 3077 flow [2024-06-04 14:42:58,963 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 14:42:58,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:58,963 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 14:42:58,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-04 14:42:58,963 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 14:42:58,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:58,964 INFO L85 PathProgramCache]: Analyzing trace with hash -2025688342, now seen corresponding path program 9 times [2024-06-04 14:42:58,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:58,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605852467] [2024-06-04 14:42:58,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:58,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:00,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:00,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:00,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605852467] [2024-06-04 14:43:00,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605852467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:00,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:00,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:43:00,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720485448] [2024-06-04 14:43:00,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:00,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:43:00,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:00,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:43:00,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:43:00,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:43:00,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 283 transitions, 3077 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 14:43:00,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:00,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:43:00,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:01,485 INFO L124 PetriNetUnfolderBase]: 3308/5061 cut-off events. [2024-06-04 14:43:01,486 INFO L125 PetriNetUnfolderBase]: For 1050429/1050429 co-relation queries the response was YES. [2024-06-04 14:43:01,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53963 conditions, 5061 events. 3308/5061 cut-off events. For 1050429/1050429 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 26991 event pairs, 739 based on Foata normal form. 4/5059 useless extension candidates. Maximal degree in co-relation 53845. Up to 4306 conditions per place. [2024-06-04 14:43:01,544 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 229 selfloop transitions, 93 changer transitions 0/333 dead transitions. [2024-06-04 14:43:01,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 333 transitions, 5057 flow [2024-06-04 14:43:01,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:43:01,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:43:01,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 202 transitions. [2024-06-04 14:43:01,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590909090909091 [2024-06-04 14:43:01,546 INFO L175 Difference]: Start difference. First operand has 243 places, 283 transitions, 3077 flow. Second operand 10 states and 202 transitions. [2024-06-04 14:43:01,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 333 transitions, 5057 flow [2024-06-04 14:43:03,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 333 transitions, 4898 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-04 14:43:03,124 INFO L231 Difference]: Finished difference. Result has 246 places, 292 transitions, 3514 flow [2024-06-04 14:43:03,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2918, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3514, PETRI_PLACES=246, PETRI_TRANSITIONS=292} [2024-06-04 14:43:03,125 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 201 predicate places. [2024-06-04 14:43:03,125 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 292 transitions, 3514 flow [2024-06-04 14:43:03,125 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 14:43:03,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:03,125 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 14:43:03,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-04 14:43:03,125 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 14:43:03,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:03,126 INFO L85 PathProgramCache]: Analyzing trace with hash 136381224, now seen corresponding path program 10 times [2024-06-04 14:43:03,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:03,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423072394] [2024-06-04 14:43:03,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:03,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:04,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:04,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:04,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423072394] [2024-06-04 14:43:04,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423072394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:04,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:04,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:43:04,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809870014] [2024-06-04 14:43:04,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:04,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:43:04,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:04,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:43:04,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:43:04,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:43:04,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 292 transitions, 3514 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 14:43:04,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:04,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:43:04,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:05,720 INFO L124 PetriNetUnfolderBase]: 3374/5163 cut-off events. [2024-06-04 14:43:05,721 INFO L125 PetriNetUnfolderBase]: For 1109156/1109156 co-relation queries the response was YES. [2024-06-04 14:43:05,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57078 conditions, 5163 events. 3374/5163 cut-off events. For 1109156/1109156 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 27641 event pairs, 681 based on Foata normal form. 4/5159 useless extension candidates. Maximal degree in co-relation 56958. Up to 4544 conditions per place. [2024-06-04 14:43:05,781 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 256 selfloop transitions, 73 changer transitions 0/340 dead transitions. [2024-06-04 14:43:05,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 340 transitions, 5470 flow [2024-06-04 14:43:05,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:43:05,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:43:05,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2024-06-04 14:43:05,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46136363636363636 [2024-06-04 14:43:05,783 INFO L175 Difference]: Start difference. First operand has 246 places, 292 transitions, 3514 flow. Second operand 10 states and 203 transitions. [2024-06-04 14:43:05,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 340 transitions, 5470 flow [2024-06-04 14:43:07,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 340 transitions, 5088 flow, removed 144 selfloop flow, removed 5 redundant places. [2024-06-04 14:43:07,552 INFO L231 Difference]: Finished difference. Result has 251 places, 298 transitions, 3574 flow [2024-06-04 14:43:07,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3218, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3574, PETRI_PLACES=251, PETRI_TRANSITIONS=298} [2024-06-04 14:43:07,552 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 206 predicate places. [2024-06-04 14:43:07,552 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 298 transitions, 3574 flow [2024-06-04 14:43:07,552 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 14:43:07,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:07,553 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 14:43:07,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-04 14:43:07,553 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 14:43:07,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:07,553 INFO L85 PathProgramCache]: Analyzing trace with hash -2025538612, now seen corresponding path program 11 times [2024-06-04 14:43:07,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:07,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026779051] [2024-06-04 14:43:07,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:07,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:08,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:08,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:08,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026779051] [2024-06-04 14:43:08,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026779051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:08,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:08,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:43:08,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481778260] [2024-06-04 14:43:08,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:08,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:43:08,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:08,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:43:08,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:43:08,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:43:08,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 298 transitions, 3574 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 14:43:08,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:08,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:43:08,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:10,227 INFO L124 PetriNetUnfolderBase]: 3352/5125 cut-off events. [2024-06-04 14:43:10,227 INFO L125 PetriNetUnfolderBase]: For 1103111/1103111 co-relation queries the response was YES. [2024-06-04 14:43:10,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55634 conditions, 5125 events. 3352/5125 cut-off events. For 1103111/1103111 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 27350 event pairs, 739 based on Foata normal form. 4/5123 useless extension candidates. Maximal degree in co-relation 55513. Up to 4556 conditions per place. [2024-06-04 14:43:10,289 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 258 selfloop transitions, 68 changer transitions 0/337 dead transitions. [2024-06-04 14:43:10,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 337 transitions, 4940 flow [2024-06-04 14:43:10,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:43:10,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:43:10,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-04 14:43:10,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-04 14:43:10,290 INFO L175 Difference]: Start difference. First operand has 251 places, 298 transitions, 3574 flow. Second operand 10 states and 198 transitions. [2024-06-04 14:43:10,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 337 transitions, 4940 flow [2024-06-04 14:43:12,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 337 transitions, 4701 flow, removed 78 selfloop flow, removed 6 redundant places. [2024-06-04 14:43:12,381 INFO L231 Difference]: Finished difference. Result has 255 places, 298 transitions, 3479 flow [2024-06-04 14:43:12,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3335, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3479, PETRI_PLACES=255, PETRI_TRANSITIONS=298} [2024-06-04 14:43:12,382 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 210 predicate places. [2024-06-04 14:43:12,382 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 298 transitions, 3479 flow [2024-06-04 14:43:12,382 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 14:43:12,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:12,382 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 14:43:12,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-04 14:43:12,383 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 14:43:12,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:12,383 INFO L85 PathProgramCache]: Analyzing trace with hash 749993932, now seen corresponding path program 12 times [2024-06-04 14:43:12,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:12,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070336872] [2024-06-04 14:43:12,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:12,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:13,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:13,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:13,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070336872] [2024-06-04 14:43:13,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070336872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:13,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:13,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:43:13,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880014143] [2024-06-04 14:43:13,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:13,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:43:13,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:13,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:43:13,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:43:13,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:43:13,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 298 transitions, 3479 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 14:43:13,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:13,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:43:13,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:14,900 INFO L124 PetriNetUnfolderBase]: 3374/5162 cut-off events. [2024-06-04 14:43:14,900 INFO L125 PetriNetUnfolderBase]: For 1126663/1126663 co-relation queries the response was YES. [2024-06-04 14:43:14,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56155 conditions, 5162 events. 3374/5162 cut-off events. For 1126663/1126663 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 27667 event pairs, 766 based on Foata normal form. 4/5160 useless extension candidates. Maximal degree in co-relation 56032. Up to 4710 conditions per place. [2024-06-04 14:43:14,965 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 283 selfloop transitions, 44 changer transitions 0/338 dead transitions. [2024-06-04 14:43:14,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 338 transitions, 4645 flow [2024-06-04 14:43:14,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:43:14,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:43:14,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-04 14:43:14,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409090909090909 [2024-06-04 14:43:14,967 INFO L175 Difference]: Start difference. First operand has 255 places, 298 transitions, 3479 flow. Second operand 10 states and 194 transitions. [2024-06-04 14:43:14,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 338 transitions, 4645 flow [2024-06-04 14:43:16,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 338 transitions, 4533 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-04 14:43:16,952 INFO L231 Difference]: Finished difference. Result has 257 places, 301 transitions, 3573 flow [2024-06-04 14:43:16,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3367, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3573, PETRI_PLACES=257, PETRI_TRANSITIONS=301} [2024-06-04 14:43:16,952 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 212 predicate places. [2024-06-04 14:43:16,952 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 301 transitions, 3573 flow [2024-06-04 14:43:16,953 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 14:43:16,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:16,953 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 14:43:16,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-04 14:43:16,953 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:43:16,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:16,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1383255338, now seen corresponding path program 13 times [2024-06-04 14:43:16,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:16,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800444620] [2024-06-04 14:43:16,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:16,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:18,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:18,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:18,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800444620] [2024-06-04 14:43:18,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800444620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:18,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:18,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:43:18,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110926294] [2024-06-04 14:43:18,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:18,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:43:18,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:18,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:43:18,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:43:18,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:43:18,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 301 transitions, 3573 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 14:43:18,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:18,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:43:18,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:19,575 INFO L124 PetriNetUnfolderBase]: 3396/5194 cut-off events. [2024-06-04 14:43:19,576 INFO L125 PetriNetUnfolderBase]: For 1156230/1156230 co-relation queries the response was YES. [2024-06-04 14:43:19,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56815 conditions, 5194 events. 3396/5194 cut-off events. For 1156230/1156230 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 27890 event pairs, 757 based on Foata normal form. 4/5192 useless extension candidates. Maximal degree in co-relation 56691. Up to 4663 conditions per place. [2024-06-04 14:43:19,641 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 277 selfloop transitions, 57 changer transitions 0/345 dead transitions. [2024-06-04 14:43:19,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 345 transitions, 5399 flow [2024-06-04 14:43:19,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:43:19,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:43:19,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-04 14:43:19,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-04 14:43:19,643 INFO L175 Difference]: Start difference. First operand has 257 places, 301 transitions, 3573 flow. Second operand 10 states and 198 transitions. [2024-06-04 14:43:19,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 345 transitions, 5399 flow [2024-06-04 14:43:21,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 345 transitions, 5211 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-06-04 14:43:21,939 INFO L231 Difference]: Finished difference. Result has 259 places, 304 transitions, 3617 flow [2024-06-04 14:43:21,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3385, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3617, PETRI_PLACES=259, PETRI_TRANSITIONS=304} [2024-06-04 14:43:21,940 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 214 predicate places. [2024-06-04 14:43:21,940 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 304 transitions, 3617 flow [2024-06-04 14:43:21,940 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 14:43:21,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:21,940 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 14:43:21,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-04 14:43:21,941 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:43:21,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:21,942 INFO L85 PathProgramCache]: Analyzing trace with hash 749786387, now seen corresponding path program 13 times [2024-06-04 14:43:21,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:21,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020144843] [2024-06-04 14:43:21,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:21,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:23,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:23,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:23,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020144843] [2024-06-04 14:43:23,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020144843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:23,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:23,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:43:23,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480577138] [2024-06-04 14:43:23,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:23,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:43:23,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:23,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:43:23,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:43:23,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:43:23,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 304 transitions, 3617 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 14:43:23,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:23,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:43:23,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:24,709 INFO L124 PetriNetUnfolderBase]: 3388/5182 cut-off events. [2024-06-04 14:43:24,709 INFO L125 PetriNetUnfolderBase]: For 1168007/1168007 co-relation queries the response was YES. [2024-06-04 14:43:24,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56566 conditions, 5182 events. 3388/5182 cut-off events. For 1168007/1168007 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 27803 event pairs, 781 based on Foata normal form. 4/5180 useless extension candidates. Maximal degree in co-relation 56441. Up to 4873 conditions per place. [2024-06-04 14:43:24,772 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 303 selfloop transitions, 22 changer transitions 0/336 dead transitions. [2024-06-04 14:43:24,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 336 transitions, 4347 flow [2024-06-04 14:43:24,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:43:24,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:43:24,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-04 14:43:24,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4159090909090909 [2024-06-04 14:43:24,774 INFO L175 Difference]: Start difference. First operand has 259 places, 304 transitions, 3617 flow. Second operand 10 states and 183 transitions. [2024-06-04 14:43:24,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 336 transitions, 4347 flow [2024-06-04 14:43:27,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 336 transitions, 3950 flow, removed 74 selfloop flow, removed 10 redundant places. [2024-06-04 14:43:27,069 INFO L231 Difference]: Finished difference. Result has 259 places, 304 transitions, 3271 flow [2024-06-04 14:43:27,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3220, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3271, PETRI_PLACES=259, PETRI_TRANSITIONS=304} [2024-06-04 14:43:27,070 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 214 predicate places. [2024-06-04 14:43:27,070 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 304 transitions, 3271 flow [2024-06-04 14:43:27,084 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 14:43:27,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:27,085 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 14:43:27,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-04 14:43:27,085 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:43:27,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:27,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1006494442, now seen corresponding path program 14 times [2024-06-04 14:43:27,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:27,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990980118] [2024-06-04 14:43:27,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:27,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:28,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:28,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:28,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990980118] [2024-06-04 14:43:28,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990980118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:28,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:28,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:43:28,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312933173] [2024-06-04 14:43:28,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:28,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:43:28,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:28,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:43:28,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:43:28,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:43:28,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 304 transitions, 3271 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 14:43:28,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:28,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:43:28,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:29,547 INFO L124 PetriNetUnfolderBase]: 3410/5214 cut-off events. [2024-06-04 14:43:29,547 INFO L125 PetriNetUnfolderBase]: For 1191821/1191821 co-relation queries the response was YES. [2024-06-04 14:43:29,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56254 conditions, 5214 events. 3410/5214 cut-off events. For 1191821/1191821 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 28015 event pairs, 776 based on Foata normal form. 4/5212 useless extension candidates. Maximal degree in co-relation 56129. Up to 4872 conditions per place. [2024-06-04 14:43:29,614 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 305 selfloop transitions, 25 changer transitions 0/341 dead transitions. [2024-06-04 14:43:29,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 341 transitions, 4125 flow [2024-06-04 14:43:29,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:43:29,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:43:29,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-04 14:43:29,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42272727272727273 [2024-06-04 14:43:29,624 INFO L175 Difference]: Start difference. First operand has 259 places, 304 transitions, 3271 flow. Second operand 10 states and 186 transitions. [2024-06-04 14:43:29,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 341 transitions, 4125 flow [2024-06-04 14:43:31,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 341 transitions, 4055 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-04 14:43:31,296 INFO L231 Difference]: Finished difference. Result has 260 places, 307 transitions, 3369 flow [2024-06-04 14:43:31,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3201, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3369, PETRI_PLACES=260, PETRI_TRANSITIONS=307} [2024-06-04 14:43:31,297 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 215 predicate places. [2024-06-04 14:43:31,297 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 307 transitions, 3369 flow [2024-06-04 14:43:31,297 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 14:43:31,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:31,297 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 14:43:31,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-04 14:43:31,298 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:43:31,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:31,298 INFO L85 PathProgramCache]: Analyzing trace with hash 749792122, now seen corresponding path program 15 times [2024-06-04 14:43:31,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:31,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943641527] [2024-06-04 14:43:31,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:31,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:32,478 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 14:43:32,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:32,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943641527] [2024-06-04 14:43:32,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943641527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:32,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:32,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:43:32,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136577008] [2024-06-04 14:43:32,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:32,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:43:32,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:32,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:43:32,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:43:32,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:43:32,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 307 transitions, 3369 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 14:43:32,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:32,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:43:32,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:33,807 INFO L124 PetriNetUnfolderBase]: 3410/5216 cut-off events. [2024-06-04 14:43:33,808 INFO L125 PetriNetUnfolderBase]: For 1208671/1208671 co-relation queries the response was YES. [2024-06-04 14:43:33,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56320 conditions, 5216 events. 3410/5216 cut-off events. For 1208671/1208671 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 27989 event pairs, 711 based on Foata normal form. 4/5212 useless extension candidates. Maximal degree in co-relation 56194. Up to 4747 conditions per place. [2024-06-04 14:43:33,874 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 289 selfloop transitions, 46 changer transitions 0/346 dead transitions. [2024-06-04 14:43:33,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 346 transitions, 4793 flow [2024-06-04 14:43:33,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:43:33,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:43:33,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-04 14:43:33,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-04 14:43:33,875 INFO L175 Difference]: Start difference. First operand has 260 places, 307 transitions, 3369 flow. Second operand 10 states and 195 transitions. [2024-06-04 14:43:33,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 346 transitions, 4793 flow [2024-06-04 14:43:36,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 346 transitions, 4617 flow, removed 65 selfloop flow, removed 8 redundant places. [2024-06-04 14:43:36,086 INFO L231 Difference]: Finished difference. Result has 262 places, 307 transitions, 3293 flow [2024-06-04 14:43:36,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3193, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3293, PETRI_PLACES=262, PETRI_TRANSITIONS=307} [2024-06-04 14:43:36,086 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 217 predicate places. [2024-06-04 14:43:36,086 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 307 transitions, 3293 flow [2024-06-04 14:43:36,087 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 14:43:36,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:36,087 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 14:43:36,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-04 14:43:36,087 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:43:36,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:36,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1016025578, now seen corresponding path program 1 times [2024-06-04 14:43:36,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:36,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414705020] [2024-06-04 14:43:36,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:36,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:37,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:37,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:37,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414705020] [2024-06-04 14:43:37,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414705020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:37,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:37,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:43:37,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692453531] [2024-06-04 14:43:37,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:37,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:43:37,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:37,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:43:37,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:43:37,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-04 14:43:37,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 307 transitions, 3293 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 14:43:37,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:37,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-04 14:43:37,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:38,625 INFO L124 PetriNetUnfolderBase]: 3763/5640 cut-off events. [2024-06-04 14:43:38,626 INFO L125 PetriNetUnfolderBase]: For 1236467/1236467 co-relation queries the response was YES. [2024-06-04 14:43:38,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58575 conditions, 5640 events. 3763/5640 cut-off events. For 1236467/1236467 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 28985 event pairs, 866 based on Foata normal form. 2/5641 useless extension candidates. Maximal degree in co-relation 58448. Up to 5411 conditions per place. [2024-06-04 14:43:38,694 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 304 selfloop transitions, 25 changer transitions 0/338 dead transitions. [2024-06-04 14:43:38,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 338 transitions, 4065 flow [2024-06-04 14:43:38,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:43:38,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:43:38,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-04 14:43:38,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-04 14:43:38,695 INFO L175 Difference]: Start difference. First operand has 262 places, 307 transitions, 3293 flow. Second operand 9 states and 160 transitions. [2024-06-04 14:43:38,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 338 transitions, 4065 flow [2024-06-04 14:43:41,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 338 transitions, 3798 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-04 14:43:41,125 INFO L231 Difference]: Finished difference. Result has 262 places, 310 transitions, 3136 flow [2024-06-04 14:43:41,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3034, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3136, PETRI_PLACES=262, PETRI_TRANSITIONS=310} [2024-06-04 14:43:41,126 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 217 predicate places. [2024-06-04 14:43:41,126 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 310 transitions, 3136 flow [2024-06-04 14:43:41,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 14:43:41,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:41,126 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 14:43:41,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-04 14:43:41,126 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 14:43:41,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:41,127 INFO L85 PathProgramCache]: Analyzing trace with hash 638353822, now seen corresponding path program 2 times [2024-06-04 14:43:41,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:41,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752119753] [2024-06-04 14:43:41,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:41,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:41,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:41,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:41,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:41,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752119753] [2024-06-04 14:43:41,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752119753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:41,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:41,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:43:41,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126946645] [2024-06-04 14:43:41,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:41,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:43:41,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:41,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:43:41,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:43:41,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:43:41,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 310 transitions, 3136 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 14:43:41,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:41,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:43:41,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:43,134 INFO L124 PetriNetUnfolderBase]: 3476/5315 cut-off events. [2024-06-04 14:43:43,134 INFO L125 PetriNetUnfolderBase]: For 1262211/1262235 co-relation queries the response was YES. [2024-06-04 14:43:43,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55992 conditions, 5315 events. 3476/5315 cut-off events. For 1262211/1262235 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 28292 event pairs, 890 based on Foata normal form. 13/5299 useless extension candidates. Maximal degree in co-relation 55864. Up to 4967 conditions per place. [2024-06-04 14:43:43,195 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 261 selfloop transitions, 14 changer transitions 0/325 dead transitions. [2024-06-04 14:43:43,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 325 transitions, 3762 flow [2024-06-04 14:43:43,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:43:43,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:43:43,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-04 14:43:43,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025974025974026 [2024-06-04 14:43:43,197 INFO L175 Difference]: Start difference. First operand has 262 places, 310 transitions, 3136 flow. Second operand 7 states and 124 transitions. [2024-06-04 14:43:43,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 325 transitions, 3762 flow [2024-06-04 14:43:45,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 325 transitions, 3690 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-04 14:43:45,079 INFO L231 Difference]: Finished difference. Result has 261 places, 313 transitions, 3150 flow [2024-06-04 14:43:45,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3064, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3150, PETRI_PLACES=261, PETRI_TRANSITIONS=313} [2024-06-04 14:43:45,080 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 216 predicate places. [2024-06-04 14:43:45,080 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 313 transitions, 3150 flow [2024-06-04 14:43:45,080 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 14:43:45,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:45,080 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 14:43:45,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-04 14:43:45,080 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 14:43:45,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:45,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1620162822, now seen corresponding path program 3 times [2024-06-04 14:43:45,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:45,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918695345] [2024-06-04 14:43:45,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:45,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:45,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:45,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:45,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918695345] [2024-06-04 14:43:45,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918695345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:45,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:45,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:43:45,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890053420] [2024-06-04 14:43:45,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:45,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:43:45,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:45,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:43:45,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:43:45,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:43:45,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 313 transitions, 3150 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 14:43:45,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:45,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:43:45,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:47,099 INFO L124 PetriNetUnfolderBase]: 3467/5303 cut-off events. [2024-06-04 14:43:47,099 INFO L125 PetriNetUnfolderBase]: For 1276670/1276694 co-relation queries the response was YES. [2024-06-04 14:43:47,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55894 conditions, 5303 events. 3467/5303 cut-off events. For 1276670/1276694 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 28244 event pairs, 883 based on Foata normal form. 13/5287 useless extension candidates. Maximal degree in co-relation 55765. Up to 4943 conditions per place. [2024-06-04 14:43:47,171 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 258 selfloop transitions, 19 changer transitions 0/327 dead transitions. [2024-06-04 14:43:47,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 327 transitions, 3740 flow [2024-06-04 14:43:47,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:43:47,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:43:47,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-04 14:43:47,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4155844155844156 [2024-06-04 14:43:47,172 INFO L175 Difference]: Start difference. First operand has 261 places, 313 transitions, 3150 flow. Second operand 7 states and 128 transitions. [2024-06-04 14:43:47,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 327 transitions, 3740 flow [2024-06-04 14:43:49,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 327 transitions, 3660 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-04 14:43:49,567 INFO L231 Difference]: Finished difference. Result has 263 places, 313 transitions, 3114 flow [2024-06-04 14:43:49,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3070, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3114, PETRI_PLACES=263, PETRI_TRANSITIONS=313} [2024-06-04 14:43:49,568 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 218 predicate places. [2024-06-04 14:43:49,568 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 313 transitions, 3114 flow [2024-06-04 14:43:49,568 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 14:43:49,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:49,568 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 14:43:49,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-04 14:43:49,569 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 14:43:49,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:49,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1708517768, now seen corresponding path program 1 times [2024-06-04 14:43:49,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:49,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124992000] [2024-06-04 14:43:49,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:49,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:49,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:50,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:50,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:50,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124992000] [2024-06-04 14:43:50,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124992000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:50,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:50,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:43:50,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367247632] [2024-06-04 14:43:50,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:50,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:43:50,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:50,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:43:50,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:43:50,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-06-04 14:43:50,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 313 transitions, 3114 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:50,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:50,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-06-04 14:43:50,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:51,740 INFO L124 PetriNetUnfolderBase]: 3958/5843 cut-off events. [2024-06-04 14:43:51,740 INFO L125 PetriNetUnfolderBase]: For 1285284/1285284 co-relation queries the response was YES. [2024-06-04 14:43:51,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59672 conditions, 5843 events. 3958/5843 cut-off events. For 1285284/1285284 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 29304 event pairs, 938 based on Foata normal form. 1/5843 useless extension candidates. Maximal degree in co-relation 59543. Up to 5794 conditions per place. [2024-06-04 14:43:51,821 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 309 selfloop transitions, 24 changer transitions 0/336 dead transitions. [2024-06-04 14:43:51,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 336 transitions, 4108 flow [2024-06-04 14:43:51,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:43:51,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:43:51,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-04 14:43:51,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38961038961038963 [2024-06-04 14:43:51,823 INFO L175 Difference]: Start difference. First operand has 263 places, 313 transitions, 3114 flow. Second operand 7 states and 120 transitions. [2024-06-04 14:43:51,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 336 transitions, 4108 flow [2024-06-04 14:43:54,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 336 transitions, 4036 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-04 14:43:54,503 INFO L231 Difference]: Finished difference. Result has 264 places, 319 transitions, 3210 flow [2024-06-04 14:43:54,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3042, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3210, PETRI_PLACES=264, PETRI_TRANSITIONS=319} [2024-06-04 14:43:54,509 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 219 predicate places. [2024-06-04 14:43:54,509 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 319 transitions, 3210 flow [2024-06-04 14:43:54,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:54,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:54,509 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 14:43:54,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-04 14:43:54,509 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:43:54,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:54,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1708524526, now seen corresponding path program 1 times [2024-06-04 14:43:54,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:54,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023059478] [2024-06-04 14:43:54,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:54,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:55,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:55,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:55,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023059478] [2024-06-04 14:43:55,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023059478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:55,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:55,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:43:55,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079521031] [2024-06-04 14:43:55,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:55,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:43:55,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:55,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:43:55,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:43:55,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-04 14:43:55,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 319 transitions, 3210 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:55,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:55,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-04 14:43:55,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:56,867 INFO L124 PetriNetUnfolderBase]: 3791/5682 cut-off events. [2024-06-04 14:43:56,867 INFO L125 PetriNetUnfolderBase]: For 1316580/1316580 co-relation queries the response was YES. [2024-06-04 14:43:56,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58833 conditions, 5682 events. 3791/5682 cut-off events. For 1316580/1316580 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 29214 event pairs, 929 based on Foata normal form. 3/5684 useless extension candidates. Maximal degree in co-relation 58703. Up to 5373 conditions per place. [2024-06-04 14:43:56,942 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 280 selfloop transitions, 25 changer transitions 0/344 dead transitions. [2024-06-04 14:43:56,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 344 transitions, 4148 flow [2024-06-04 14:43:56,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:43:56,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:43:56,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-04 14:43:56,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42207792207792205 [2024-06-04 14:43:56,943 INFO L175 Difference]: Start difference. First operand has 264 places, 319 transitions, 3210 flow. Second operand 7 states and 130 transitions. [2024-06-04 14:43:56,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 344 transitions, 4148 flow [2024-06-04 14:43:59,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 344 transitions, 4074 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-04 14:43:59,496 INFO L231 Difference]: Finished difference. Result has 268 places, 325 transitions, 3298 flow [2024-06-04 14:43:59,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3136, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3298, PETRI_PLACES=268, PETRI_TRANSITIONS=325} [2024-06-04 14:43:59,497 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 223 predicate places. [2024-06-04 14:43:59,497 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 325 transitions, 3298 flow [2024-06-04 14:43:59,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:59,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:59,497 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 14:43:59,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-04 14:43:59,497 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:43:59,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:59,498 INFO L85 PathProgramCache]: Analyzing trace with hash 401887496, now seen corresponding path program 2 times [2024-06-04 14:43:59,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:59,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709680690] [2024-06-04 14:43:59,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:59,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:00,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:00,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:00,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709680690] [2024-06-04 14:44:00,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709680690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:00,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:00,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:44:00,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920154834] [2024-06-04 14:44:00,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:00,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:44:00,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:00,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:44:00,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:44:00,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-06-04 14:44:00,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 325 transitions, 3298 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:00,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:00,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-06-04 14:44:00,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:01,620 INFO L124 PetriNetUnfolderBase]: 3978/5871 cut-off events. [2024-06-04 14:44:01,620 INFO L125 PetriNetUnfolderBase]: For 1342675/1342675 co-relation queries the response was YES. [2024-06-04 14:44:01,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61148 conditions, 5871 events. 3978/5871 cut-off events. For 1342675/1342675 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 29483 event pairs, 937 based on Foata normal form. 1/5871 useless extension candidates. Maximal degree in co-relation 61016. Up to 5821 conditions per place. [2024-06-04 14:44:01,693 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 313 selfloop transitions, 26 changer transitions 0/342 dead transitions. [2024-06-04 14:44:01,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 342 transitions, 4244 flow [2024-06-04 14:44:01,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:44:01,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:44:01,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-04 14:44:01,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38311688311688313 [2024-06-04 14:44:01,694 INFO L175 Difference]: Start difference. First operand has 268 places, 325 transitions, 3298 flow. Second operand 7 states and 118 transitions. [2024-06-04 14:44:01,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 342 transitions, 4244 flow [2024-06-04 14:44:04,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 342 transitions, 4178 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-04 14:44:04,036 INFO L231 Difference]: Finished difference. Result has 272 places, 328 transitions, 3342 flow [2024-06-04 14:44:04,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3232, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3342, PETRI_PLACES=272, PETRI_TRANSITIONS=328} [2024-06-04 14:44:04,037 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 227 predicate places. [2024-06-04 14:44:04,037 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 328 transitions, 3342 flow [2024-06-04 14:44:04,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:04,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:04,037 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 14:44:04,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-04 14:44:04,038 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:44:04,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:04,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1966446076, now seen corresponding path program 2 times [2024-06-04 14:44:04,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:04,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348979961] [2024-06-04 14:44:04,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:04,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:04,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:04,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:04,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348979961] [2024-06-04 14:44:04,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348979961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:04,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:04,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:44:04,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808000386] [2024-06-04 14:44:04,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:04,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:44:04,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:04,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:44:04,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:44:04,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-04 14:44:04,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 328 transitions, 3342 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:04,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:04,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-04 14:44:04,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:06,217 INFO L124 PetriNetUnfolderBase]: 3811/5711 cut-off events. [2024-06-04 14:44:06,218 INFO L125 PetriNetUnfolderBase]: For 1372621/1372623 co-relation queries the response was YES. [2024-06-04 14:44:06,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59972 conditions, 5711 events. 3811/5711 cut-off events. For 1372621/1372623 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 29357 event pairs, 929 based on Foata normal form. 5/5715 useless extension candidates. Maximal degree in co-relation 59838. Up to 5392 conditions per place. [2024-06-04 14:44:06,291 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 277 selfloop transitions, 29 changer transitions 0/346 dead transitions. [2024-06-04 14:44:06,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 346 transitions, 4226 flow [2024-06-04 14:44:06,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:44:06,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:44:06,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-04 14:44:06,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025974025974026 [2024-06-04 14:44:06,293 INFO L175 Difference]: Start difference. First operand has 272 places, 328 transitions, 3342 flow. Second operand 7 states and 124 transitions. [2024-06-04 14:44:06,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 346 transitions, 4226 flow [2024-06-04 14:44:09,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 346 transitions, 4150 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-04 14:44:09,106 INFO L231 Difference]: Finished difference. Result has 275 places, 331 transitions, 3381 flow [2024-06-04 14:44:09,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3266, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3381, PETRI_PLACES=275, PETRI_TRANSITIONS=331} [2024-06-04 14:44:09,106 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 230 predicate places. [2024-06-04 14:44:09,106 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 331 transitions, 3381 flow [2024-06-04 14:44:09,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:09,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:09,107 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 14:44:09,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-04 14:44:09,107 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:44:09,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:09,107 INFO L85 PathProgramCache]: Analyzing trace with hash 638062856, now seen corresponding path program 3 times [2024-06-04 14:44:09,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:09,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425023367] [2024-06-04 14:44:09,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:09,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:09,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:09,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:09,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425023367] [2024-06-04 14:44:09,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425023367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:09,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:09,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:44:09,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252182189] [2024-06-04 14:44:09,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:09,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:44:09,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:09,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:44:09,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:44:09,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-06-04 14:44:09,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 331 transitions, 3381 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:09,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:09,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-06-04 14:44:09,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:11,259 INFO L124 PetriNetUnfolderBase]: 3990/5889 cut-off events. [2024-06-04 14:44:11,259 INFO L125 PetriNetUnfolderBase]: For 1392755/1392757 co-relation queries the response was YES. [2024-06-04 14:44:11,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61733 conditions, 5889 events. 3990/5889 cut-off events. For 1392755/1392757 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 29563 event pairs, 944 based on Foata normal form. 1/5889 useless extension candidates. Maximal degree in co-relation 61598. Up to 5839 conditions per place. [2024-06-04 14:44:11,328 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 312 selfloop transitions, 26 changer transitions 0/341 dead transitions. [2024-06-04 14:44:11,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 341 transitions, 4081 flow [2024-06-04 14:44:11,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:44:11,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:44:11,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-04 14:44:11,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37012987012987014 [2024-06-04 14:44:11,329 INFO L175 Difference]: Start difference. First operand has 275 places, 331 transitions, 3381 flow. Second operand 7 states and 114 transitions. [2024-06-04 14:44:11,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 341 transitions, 4081 flow [2024-06-04 14:44:13,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 341 transitions, 3970 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-04 14:44:13,497 INFO L231 Difference]: Finished difference. Result has 278 places, 331 transitions, 3328 flow [2024-06-04 14:44:13,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3270, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3328, PETRI_PLACES=278, PETRI_TRANSITIONS=331} [2024-06-04 14:44:13,497 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 233 predicate places. [2024-06-04 14:44:13,497 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 331 transitions, 3328 flow [2024-06-04 14:44:13,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:13,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:13,498 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 14:44:13,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-04 14:44:13,498 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:44:13,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:13,498 INFO L85 PathProgramCache]: Analyzing trace with hash 394974712, now seen corresponding path program 3 times [2024-06-04 14:44:13,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:13,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247756351] [2024-06-04 14:44:13,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:13,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:14,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:14,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:14,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247756351] [2024-06-04 14:44:14,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247756351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:14,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:14,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:44:14,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149494625] [2024-06-04 14:44:14,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:14,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:44:14,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:14,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:44:14,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:44:14,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-04 14:44:14,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 331 transitions, 3328 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:14,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:14,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-04 14:44:14,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:15,785 INFO L124 PetriNetUnfolderBase]: 3799/5695 cut-off events. [2024-06-04 14:44:15,786 INFO L125 PetriNetUnfolderBase]: For 1408828/1408830 co-relation queries the response was YES. [2024-06-04 14:44:15,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59906 conditions, 5695 events. 3799/5695 cut-off events. For 1408828/1408830 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 29381 event pairs, 927 based on Foata normal form. 5/5699 useless extension candidates. Maximal degree in co-relation 59770. Up to 5382 conditions per place. [2024-06-04 14:44:15,852 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 279 selfloop transitions, 28 changer transitions 0/347 dead transitions. [2024-06-04 14:44:15,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 347 transitions, 3984 flow [2024-06-04 14:44:15,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:44:15,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:44:15,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-04 14:44:15,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 14:44:15,853 INFO L175 Difference]: Start difference. First operand has 278 places, 331 transitions, 3328 flow. Second operand 7 states and 126 transitions. [2024-06-04 14:44:15,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 347 transitions, 3984 flow [2024-06-04 14:44:19,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 347 transitions, 3868 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-04 14:44:19,047 INFO L231 Difference]: Finished difference. Result has 278 places, 331 transitions, 3274 flow [2024-06-04 14:44:19,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3212, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3274, PETRI_PLACES=278, PETRI_TRANSITIONS=331} [2024-06-04 14:44:19,047 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 233 predicate places. [2024-06-04 14:44:19,047 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 331 transitions, 3274 flow [2024-06-04 14:44:19,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:19,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:19,048 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 14:44:19,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-04 14:44:19,048 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 14:44:19,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:19,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1848148302, now seen corresponding path program 1 times [2024-06-04 14:44:19,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:19,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902207315] [2024-06-04 14:44:19,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:19,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:20,478 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 14:44:20,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:20,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902207315] [2024-06-04 14:44:20,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902207315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:20,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:20,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:44:20,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394628531] [2024-06-04 14:44:20,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:20,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:44:20,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:20,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:44:20,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:44:20,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:44:20,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 331 transitions, 3274 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 14:44:20,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:20,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:44:20,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:22,095 INFO L124 PetriNetUnfolderBase]: 3718/5674 cut-off events. [2024-06-04 14:44:22,095 INFO L125 PetriNetUnfolderBase]: For 1640566/1640584 co-relation queries the response was YES. [2024-06-04 14:44:22,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64621 conditions, 5674 events. 3718/5674 cut-off events. For 1640566/1640584 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 31105 event pairs, 706 based on Foata normal form. 16/5653 useless extension candidates. Maximal degree in co-relation 64484. Up to 4800 conditions per place. [2024-06-04 14:44:22,169 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 337 selfloop transitions, 45 changer transitions 0/396 dead transitions. [2024-06-04 14:44:22,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 396 transitions, 4762 flow [2024-06-04 14:44:22,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:44:22,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:44:22,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 243 transitions. [2024-06-04 14:44:22,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2024-06-04 14:44:22,170 INFO L175 Difference]: Start difference. First operand has 278 places, 331 transitions, 3274 flow. Second operand 12 states and 243 transitions. [2024-06-04 14:44:22,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 396 transitions, 4762 flow [2024-06-04 14:44:25,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 396 transitions, 4681 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-04 14:44:25,842 INFO L231 Difference]: Finished difference. Result has 283 places, 333 transitions, 3443 flow [2024-06-04 14:44:25,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3193, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3443, PETRI_PLACES=283, PETRI_TRANSITIONS=333} [2024-06-04 14:44:25,842 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 238 predicate places. [2024-06-04 14:44:25,842 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 333 transitions, 3443 flow [2024-06-04 14:44:25,843 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 14:44:25,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:25,843 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 14:44:25,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-04 14:44:25,843 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 14:44:25,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:25,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1850829492, now seen corresponding path program 2 times [2024-06-04 14:44:25,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:25,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459859281] [2024-06-04 14:44:25,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:25,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:27,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:27,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:27,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459859281] [2024-06-04 14:44:27,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459859281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:27,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:27,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:44:27,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849326921] [2024-06-04 14:44:27,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:27,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:44:27,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:27,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:44:27,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:44:27,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:44:27,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 333 transitions, 3443 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 14:44:27,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:27,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:44:27,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:29,198 INFO L124 PetriNetUnfolderBase]: 3839/5891 cut-off events. [2024-06-04 14:44:29,198 INFO L125 PetriNetUnfolderBase]: For 1728990/1729008 co-relation queries the response was YES. [2024-06-04 14:44:29,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68426 conditions, 5891 events. 3839/5891 cut-off events. For 1728990/1729008 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 32855 event pairs, 856 based on Foata normal form. 16/5876 useless extension candidates. Maximal degree in co-relation 68288. Up to 4964 conditions per place. [2024-06-04 14:44:29,277 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 339 selfloop transitions, 45 changer transitions 0/398 dead transitions. [2024-06-04 14:44:29,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 398 transitions, 4963 flow [2024-06-04 14:44:29,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:44:29,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:44:29,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 242 transitions. [2024-06-04 14:44:29,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-04 14:44:29,279 INFO L175 Difference]: Start difference. First operand has 283 places, 333 transitions, 3443 flow. Second operand 12 states and 242 transitions. [2024-06-04 14:44:29,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 398 transitions, 4963 flow [2024-06-04 14:44:32,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 398 transitions, 4838 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-04 14:44:32,901 INFO L231 Difference]: Finished difference. Result has 288 places, 335 transitions, 3588 flow [2024-06-04 14:44:32,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3330, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3588, PETRI_PLACES=288, PETRI_TRANSITIONS=335} [2024-06-04 14:44:32,902 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 243 predicate places. [2024-06-04 14:44:32,902 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 335 transitions, 3588 flow [2024-06-04 14:44:32,902 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 14:44:32,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:32,902 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 14:44:32,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-04 14:44:32,903 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 14:44:32,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:32,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1850949462, now seen corresponding path program 3 times [2024-06-04 14:44:32,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:32,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259600411] [2024-06-04 14:44:32,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:32,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:34,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:34,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:34,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259600411] [2024-06-04 14:44:34,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259600411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:34,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:34,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:44:34,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679980177] [2024-06-04 14:44:34,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:34,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:44:34,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:34,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:44:34,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:44:34,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:44:34,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 335 transitions, 3588 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 14:44:34,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:34,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:44:34,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:36,223 INFO L124 PetriNetUnfolderBase]: 3936/6063 cut-off events. [2024-06-04 14:44:36,223 INFO L125 PetriNetUnfolderBase]: For 1791153/1791171 co-relation queries the response was YES. [2024-06-04 14:44:36,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69754 conditions, 6063 events. 3936/6063 cut-off events. For 1791153/1791171 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 34246 event pairs, 910 based on Foata normal form. 20/6052 useless extension candidates. Maximal degree in co-relation 69613. Up to 5517 conditions per place. [2024-06-04 14:44:36,313 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 343 selfloop transitions, 38 changer transitions 0/395 dead transitions. [2024-06-04 14:44:36,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 395 transitions, 4632 flow [2024-06-04 14:44:36,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:44:36,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:44:36,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 237 transitions. [2024-06-04 14:44:36,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-06-04 14:44:36,315 INFO L175 Difference]: Start difference. First operand has 288 places, 335 transitions, 3588 flow. Second operand 12 states and 237 transitions. [2024-06-04 14:44:36,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 395 transitions, 4632 flow [2024-06-04 14:44:39,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 395 transitions, 4503 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-04 14:44:39,839 INFO L231 Difference]: Finished difference. Result has 291 places, 339 transitions, 3636 flow [2024-06-04 14:44:39,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3464, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3636, PETRI_PLACES=291, PETRI_TRANSITIONS=339} [2024-06-04 14:44:39,840 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 246 predicate places. [2024-06-04 14:44:39,840 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 339 transitions, 3636 flow [2024-06-04 14:44:39,840 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 14:44:39,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:39,840 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 14:44:39,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-04 14:44:39,840 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 14:44:39,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:39,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1850944812, now seen corresponding path program 4 times [2024-06-04 14:44:39,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:39,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105493682] [2024-06-04 14:44:39,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:39,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:41,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:41,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:41,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105493682] [2024-06-04 14:44:41,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105493682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:41,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:41,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:44:41,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107428373] [2024-06-04 14:44:41,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:41,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:44:41,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:41,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:44:41,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:44:41,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:44:41,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 339 transitions, 3636 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 14:44:41,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:41,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:44:41,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:43,339 INFO L124 PetriNetUnfolderBase]: 3994/6156 cut-off events. [2024-06-04 14:44:43,340 INFO L125 PetriNetUnfolderBase]: For 1806307/1806325 co-relation queries the response was YES. [2024-06-04 14:44:43,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70504 conditions, 6156 events. 3994/6156 cut-off events. For 1806307/1806325 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 34902 event pairs, 896 based on Foata normal form. 16/6141 useless extension candidates. Maximal degree in co-relation 70362. Up to 5188 conditions per place. [2024-06-04 14:44:43,423 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 346 selfloop transitions, 46 changer transitions 0/406 dead transitions. [2024-06-04 14:44:43,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 406 transitions, 5102 flow [2024-06-04 14:44:43,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:44:43,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:44:43,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 256 transitions. [2024-06-04 14:44:43,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44755244755244755 [2024-06-04 14:44:43,425 INFO L175 Difference]: Start difference. First operand has 291 places, 339 transitions, 3636 flow. Second operand 13 states and 256 transitions. [2024-06-04 14:44:43,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 406 transitions, 5102 flow [2024-06-04 14:44:46,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 406 transitions, 5019 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-04 14:44:46,975 INFO L231 Difference]: Finished difference. Result has 296 places, 340 transitions, 3722 flow [2024-06-04 14:44:46,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3553, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3722, PETRI_PLACES=296, PETRI_TRANSITIONS=340} [2024-06-04 14:44:46,976 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 251 predicate places. [2024-06-04 14:44:46,976 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 340 transitions, 3722 flow [2024-06-04 14:44:46,976 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 14:44:46,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:46,976 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 14:44:46,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-04 14:44:46,976 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:44:46,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:46,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1639652135, now seen corresponding path program 1 times [2024-06-04 14:44:46,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:46,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927556427] [2024-06-04 14:44:46,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:46,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:48,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:48,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:48,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927556427] [2024-06-04 14:44:48,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927556427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:48,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:48,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:48,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484713706] [2024-06-04 14:44:48,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:48,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:48,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:48,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:48,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:48,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-04 14:44:48,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 340 transitions, 3722 flow. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 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 14:44:48,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:48,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-04 14:44:48,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:49,682 INFO L124 PetriNetUnfolderBase]: 4356/6615 cut-off events. [2024-06-04 14:44:49,682 INFO L125 PetriNetUnfolderBase]: For 1776048/1776048 co-relation queries the response was YES. [2024-06-04 14:44:49,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72694 conditions, 6615 events. 4356/6615 cut-off events. For 1776048/1776048 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 36090 event pairs, 1104 based on Foata normal form. 1/6608 useless extension candidates. Maximal degree in co-relation 72551. Up to 6287 conditions per place. [2024-06-04 14:44:49,778 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 310 selfloop transitions, 35 changer transitions 0/385 dead transitions. [2024-06-04 14:44:49,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 385 transitions, 4855 flow [2024-06-04 14:44:49,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:44:49,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:44:49,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-04 14:44:49,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-04 14:44:49,804 INFO L175 Difference]: Start difference. First operand has 296 places, 340 transitions, 3722 flow. Second operand 9 states and 165 transitions. [2024-06-04 14:44:49,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 385 transitions, 4855 flow [2024-06-04 14:44:52,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 385 transitions, 4711 flow, removed 25 selfloop flow, removed 11 redundant places. [2024-06-04 14:44:52,793 INFO L231 Difference]: Finished difference. Result has 295 places, 354 transitions, 3839 flow [2024-06-04 14:44:52,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3578, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3839, PETRI_PLACES=295, PETRI_TRANSITIONS=354} [2024-06-04 14:44:52,794 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 250 predicate places. [2024-06-04 14:44:52,794 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 354 transitions, 3839 flow [2024-06-04 14:44:52,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 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 14:44:52,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:52,794 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 14:44:52,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-04 14:44:52,795 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 14:44:52,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:52,795 INFO L85 PathProgramCache]: Analyzing trace with hash 243428276, now seen corresponding path program 5 times [2024-06-04 14:44:52,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:52,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280559568] [2024-06-04 14:44:52,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:52,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:54,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:54,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:54,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280559568] [2024-06-04 14:44:54,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280559568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:54,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:54,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:44:54,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833076992] [2024-06-04 14:44:54,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:54,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:44:54,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:54,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:44:54,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:44:54,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:44:54,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 354 transitions, 3839 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 14:44:54,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:54,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:44:54,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:56,091 INFO L124 PetriNetUnfolderBase]: 4118/6362 cut-off events. [2024-06-04 14:44:56,092 INFO L125 PetriNetUnfolderBase]: For 1876245/1876245 co-relation queries the response was YES. [2024-06-04 14:44:56,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72457 conditions, 6362 events. 4118/6362 cut-off events. For 1876245/1876245 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 36315 event pairs, 888 based on Foata normal form. 20/6365 useless extension candidates. Maximal degree in co-relation 72312. Up to 5823 conditions per place. [2024-06-04 14:44:56,182 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 358 selfloop transitions, 33 changer transitions 0/410 dead transitions. [2024-06-04 14:44:56,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 410 transitions, 4913 flow [2024-06-04 14:44:56,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:44:56,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:44:56,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-06-04 14:44:56,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4462809917355372 [2024-06-04 14:44:56,184 INFO L175 Difference]: Start difference. First operand has 295 places, 354 transitions, 3839 flow. Second operand 11 states and 216 transitions. [2024-06-04 14:44:56,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 410 transitions, 4913 flow [2024-06-04 14:44:59,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 410 transitions, 4835 flow, removed 35 selfloop flow, removed 2 redundant places. [2024-06-04 14:44:59,163 INFO L231 Difference]: Finished difference. Result has 305 places, 361 transitions, 3960 flow [2024-06-04 14:44:59,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3761, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3960, PETRI_PLACES=305, PETRI_TRANSITIONS=361} [2024-06-04 14:44:59,163 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 260 predicate places. [2024-06-04 14:44:59,163 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 361 transitions, 3960 flow [2024-06-04 14:44:59,163 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 14:44:59,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:59,164 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 14:44:59,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-04 14:44:59,164 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 14:44:59,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:59,165 INFO L85 PathProgramCache]: Analyzing trace with hash -675375332, now seen corresponding path program 6 times [2024-06-04 14:44:59,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:59,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820107333] [2024-06-04 14:44:59,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:59,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:59,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:00,711 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 14:45:00,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:00,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820107333] [2024-06-04 14:45:00,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820107333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:00,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:00,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:00,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316475255] [2024-06-04 14:45:00,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:00,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:00,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:00,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:00,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:00,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:45:00,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 361 transitions, 3960 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 14:45:00,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:00,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:45:00,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:02,529 INFO L124 PetriNetUnfolderBase]: 4187/6480 cut-off events. [2024-06-04 14:45:02,530 INFO L125 PetriNetUnfolderBase]: For 1923790/1923790 co-relation queries the response was YES. [2024-06-04 14:45:02,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72361 conditions, 6480 events. 4187/6480 cut-off events. For 1923790/1923790 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 37347 event pairs, 893 based on Foata normal form. 36/6499 useless extension candidates. Maximal degree in co-relation 72213. Up to 5899 conditions per place. [2024-06-04 14:45:02,618 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 370 selfloop transitions, 25 changer transitions 0/414 dead transitions. [2024-06-04 14:45:02,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 414 transitions, 5040 flow [2024-06-04 14:45:02,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:02,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:02,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-06-04 14:45:02,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4380165289256198 [2024-06-04 14:45:02,620 INFO L175 Difference]: Start difference. First operand has 305 places, 361 transitions, 3960 flow. Second operand 11 states and 212 transitions. [2024-06-04 14:45:02,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 414 transitions, 5040 flow [2024-06-04 14:45:06,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 414 transitions, 4945 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-04 14:45:06,465 INFO L231 Difference]: Finished difference. Result has 310 places, 365 transitions, 4034 flow [2024-06-04 14:45:06,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3871, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4034, PETRI_PLACES=310, PETRI_TRANSITIONS=365} [2024-06-04 14:45:06,466 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 265 predicate places. [2024-06-04 14:45:06,466 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 365 transitions, 4034 flow [2024-06-04 14:45:06,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:06,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:06,466 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 14:45:06,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-04 14:45:06,467 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 14:45:06,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:06,467 INFO L85 PathProgramCache]: Analyzing trace with hash -675548312, now seen corresponding path program 7 times [2024-06-04 14:45:06,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:06,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81068348] [2024-06-04 14:45:06,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:06,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:07,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:07,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:07,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81068348] [2024-06-04 14:45:07,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81068348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:07,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:07,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:07,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273130968] [2024-06-04 14:45:07,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:07,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:07,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:07,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:07,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:08,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:45:08,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 365 transitions, 4034 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 14:45:08,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:08,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:45:08,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:09,882 INFO L124 PetriNetUnfolderBase]: 4151/6424 cut-off events. [2024-06-04 14:45:09,883 INFO L125 PetriNetUnfolderBase]: For 1796821/1796821 co-relation queries the response was YES. [2024-06-04 14:45:09,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70074 conditions, 6424 events. 4151/6424 cut-off events. For 1796821/1796821 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 36927 event pairs, 866 based on Foata normal form. 20/6427 useless extension candidates. Maximal degree in co-relation 69924. Up to 5903 conditions per place. [2024-06-04 14:45:09,976 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 366 selfloop transitions, 29 changer transitions 0/414 dead transitions. [2024-06-04 14:45:09,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 414 transitions, 4998 flow [2024-06-04 14:45:09,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:09,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:09,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-04 14:45:09,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44214876033057854 [2024-06-04 14:45:09,978 INFO L175 Difference]: Start difference. First operand has 310 places, 365 transitions, 4034 flow. Second operand 11 states and 214 transitions. [2024-06-04 14:45:09,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 414 transitions, 4998 flow [2024-06-04 14:45:13,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 414 transitions, 4889 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-04 14:45:13,596 INFO L231 Difference]: Finished difference. Result has 313 places, 365 transitions, 3990 flow [2024-06-04 14:45:13,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3925, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3990, PETRI_PLACES=313, PETRI_TRANSITIONS=365} [2024-06-04 14:45:13,596 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 268 predicate places. [2024-06-04 14:45:13,596 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 365 transitions, 3990 flow [2024-06-04 14:45:13,596 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 14:45:13,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:13,597 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 14:45:13,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-04 14:45:13,597 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:45:13,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:13,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1635838887, now seen corresponding path program 1 times [2024-06-04 14:45:13,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:13,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470221251] [2024-06-04 14:45:13,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:13,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:14,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:14,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:14,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470221251] [2024-06-04 14:45:14,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470221251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:14,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:14,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:45:14,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029316726] [2024-06-04 14:45:14,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:14,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:45:14,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:14,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:45:14,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:45:14,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-04 14:45:14,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 365 transitions, 3990 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:14,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:14,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-04 14:45:14,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:15,957 INFO L124 PetriNetUnfolderBase]: 4554/6934 cut-off events. [2024-06-04 14:45:15,958 INFO L125 PetriNetUnfolderBase]: For 1731126/1731128 co-relation queries the response was YES. [2024-06-04 14:45:16,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71806 conditions, 6934 events. 4554/6934 cut-off events. For 1731126/1731128 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 38416 event pairs, 1129 based on Foata normal form. 3/6929 useless extension candidates. Maximal degree in co-relation 71655. Up to 6600 conditions per place. [2024-06-04 14:45:16,053 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 320 selfloop transitions, 34 changer transitions 0/395 dead transitions. [2024-06-04 14:45:16,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 395 transitions, 5312 flow [2024-06-04 14:45:16,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:45:16,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:45:16,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-04 14:45:16,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-04 14:45:16,055 INFO L175 Difference]: Start difference. First operand has 313 places, 365 transitions, 3990 flow. Second operand 7 states and 132 transitions. [2024-06-04 14:45:16,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 395 transitions, 5312 flow [2024-06-04 14:45:21,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 395 transitions, 5194 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-04 14:45:21,170 INFO L231 Difference]: Finished difference. Result has 308 places, 374 transitions, 4102 flow [2024-06-04 14:45:21,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3872, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4102, PETRI_PLACES=308, PETRI_TRANSITIONS=374} [2024-06-04 14:45:21,171 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 263 predicate places. [2024-06-04 14:45:21,171 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 374 transitions, 4102 flow [2024-06-04 14:45:21,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:21,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:21,171 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 14:45:21,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-04 14:45:21,172 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:45:21,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:21,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1628220327, now seen corresponding path program 2 times [2024-06-04 14:45:21,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:21,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299523677] [2024-06-04 14:45:21,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:21,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:22,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:22,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:22,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299523677] [2024-06-04 14:45:22,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299523677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:22,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:22,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:45:22,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365982877] [2024-06-04 14:45:22,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:22,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:45:22,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:22,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:45:22,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:45:22,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-04 14:45:22,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 374 transitions, 4102 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:22,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:22,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-04 14:45:22,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:23,914 INFO L124 PetriNetUnfolderBase]: 4567/6952 cut-off events. [2024-06-04 14:45:23,915 INFO L125 PetriNetUnfolderBase]: For 1765506/1765508 co-relation queries the response was YES. [2024-06-04 14:45:23,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72405 conditions, 6952 events. 4567/6952 cut-off events. For 1765506/1765508 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 38551 event pairs, 1129 based on Foata normal form. 3/6947 useless extension candidates. Maximal degree in co-relation 72255. Up to 6615 conditions per place. [2024-06-04 14:45:24,005 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 317 selfloop transitions, 41 changer transitions 0/399 dead transitions. [2024-06-04 14:45:24,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 399 transitions, 5403 flow [2024-06-04 14:45:24,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:45:24,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:45:24,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-04 14:45:24,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41883116883116883 [2024-06-04 14:45:24,006 INFO L175 Difference]: Start difference. First operand has 308 places, 374 transitions, 4102 flow. Second operand 7 states and 129 transitions. [2024-06-04 14:45:24,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 399 transitions, 5403 flow [2024-06-04 14:45:28,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 399 transitions, 5287 flow, removed 51 selfloop flow, removed 2 redundant places. [2024-06-04 14:45:28,401 INFO L231 Difference]: Finished difference. Result has 313 places, 381 transitions, 4199 flow [2024-06-04 14:45:28,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4014, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4199, PETRI_PLACES=313, PETRI_TRANSITIONS=381} [2024-06-04 14:45:28,401 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 268 predicate places. [2024-06-04 14:45:28,401 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 381 transitions, 4199 flow [2024-06-04 14:45:28,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:28,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:28,402 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 14:45:28,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-04 14:45:28,402 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:45:28,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:28,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1549710658, now seen corresponding path program 8 times [2024-06-04 14:45:28,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:28,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914119707] [2024-06-04 14:45:28,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:28,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:29,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:29,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:29,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914119707] [2024-06-04 14:45:29,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914119707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:29,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:29,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:29,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064522891] [2024-06-04 14:45:29,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:29,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:29,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:29,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:29,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:30,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:45:30,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 381 transitions, 4199 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 14:45:30,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:30,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:45:30,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:31,708 INFO L124 PetriNetUnfolderBase]: 4306/6671 cut-off events. [2024-06-04 14:45:31,708 INFO L125 PetriNetUnfolderBase]: For 1923066/1923068 co-relation queries the response was YES. [2024-06-04 14:45:31,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72717 conditions, 6671 events. 4306/6671 cut-off events. For 1923066/1923068 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 38676 event pairs, 801 based on Foata normal form. 24/6694 useless extension candidates. Maximal degree in co-relation 72565. Up to 5699 conditions per place. [2024-06-04 14:45:31,804 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 320 selfloop transitions, 90 changer transitions 0/434 dead transitions. [2024-06-04 14:45:31,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 434 transitions, 5310 flow [2024-06-04 14:45:31,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:31,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:31,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 224 transitions. [2024-06-04 14:45:31,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4628099173553719 [2024-06-04 14:45:31,805 INFO L175 Difference]: Start difference. First operand has 313 places, 381 transitions, 4199 flow. Second operand 11 states and 224 transitions. [2024-06-04 14:45:31,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 434 transitions, 5310 flow [2024-06-04 14:45:36,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 434 transitions, 5219 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-04 14:45:36,849 INFO L231 Difference]: Finished difference. Result has 322 places, 385 transitions, 4403 flow [2024-06-04 14:45:36,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4108, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4403, PETRI_PLACES=322, PETRI_TRANSITIONS=385} [2024-06-04 14:45:36,850 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 277 predicate places. [2024-06-04 14:45:36,850 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 385 transitions, 4403 flow [2024-06-04 14:45:36,850 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 14:45:36,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:36,850 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 14:45:36,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-04 14:45:36,851 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:45:36,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:36,851 INFO L85 PathProgramCache]: Analyzing trace with hash -626438400, now seen corresponding path program 9 times [2024-06-04 14:45:36,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:36,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828580448] [2024-06-04 14:45:36,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:36,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:38,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:38,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:38,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828580448] [2024-06-04 14:45:38,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828580448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:38,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:38,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:38,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120299921] [2024-06-04 14:45:38,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:38,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:38,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:38,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:38,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:38,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:45:38,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 385 transitions, 4403 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 14:45:38,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:38,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:45:38,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:40,370 INFO L124 PetriNetUnfolderBase]: 4387/6813 cut-off events. [2024-06-04 14:45:40,370 INFO L125 PetriNetUnfolderBase]: For 1936205/1936207 co-relation queries the response was YES. [2024-06-04 14:45:40,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74211 conditions, 6813 events. 4387/6813 cut-off events. For 1936205/1936207 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 39797 event pairs, 829 based on Foata normal form. 20/6832 useless extension candidates. Maximal degree in co-relation 74057. Up to 5800 conditions per place. [2024-06-04 14:45:40,467 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 314 selfloop transitions, 102 changer transitions 0/440 dead transitions. [2024-06-04 14:45:40,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 440 transitions, 5908 flow [2024-06-04 14:45:40,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:40,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:40,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 229 transitions. [2024-06-04 14:45:40,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731404958677686 [2024-06-04 14:45:40,468 INFO L175 Difference]: Start difference. First operand has 322 places, 385 transitions, 4403 flow. Second operand 11 states and 229 transitions. [2024-06-04 14:45:40,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 440 transitions, 5908 flow [2024-06-04 14:45:45,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 440 transitions, 5704 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-04 14:45:45,382 INFO L231 Difference]: Finished difference. Result has 326 places, 389 transitions, 4525 flow [2024-06-04 14:45:45,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4199, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4525, PETRI_PLACES=326, PETRI_TRANSITIONS=389} [2024-06-04 14:45:45,382 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 281 predicate places. [2024-06-04 14:45:45,382 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 389 transitions, 4525 flow [2024-06-04 14:45:45,383 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 14:45:45,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:45,383 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 14:45:45,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-04 14:45:45,383 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:45:45,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:45,384 INFO L85 PathProgramCache]: Analyzing trace with hash -626443050, now seen corresponding path program 10 times [2024-06-04 14:45:45,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:45,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301184154] [2024-06-04 14:45:45,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:45,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:46,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:46,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:46,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301184154] [2024-06-04 14:45:46,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301184154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:46,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:46,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:46,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614716532] [2024-06-04 14:45:46,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:46,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:46,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:46,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:46,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:47,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:45:47,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 389 transitions, 4525 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 14:45:47,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:47,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:45:47,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:48,962 INFO L124 PetriNetUnfolderBase]: 4486/6992 cut-off events. [2024-06-04 14:45:48,963 INFO L125 PetriNetUnfolderBase]: For 1957077/1957079 co-relation queries the response was YES. [2024-06-04 14:45:49,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75891 conditions, 6992 events. 4486/6992 cut-off events. For 1957077/1957079 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 41269 event pairs, 839 based on Foata normal form. 16/7007 useless extension candidates. Maximal degree in co-relation 75735. Up to 5739 conditions per place. [2024-06-04 14:45:49,066 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 316 selfloop transitions, 105 changer transitions 0/445 dead transitions. [2024-06-04 14:45:49,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 445 transitions, 6099 flow [2024-06-04 14:45:49,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:49,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:49,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 231 transitions. [2024-06-04 14:45:49,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-06-04 14:45:49,068 INFO L175 Difference]: Start difference. First operand has 326 places, 389 transitions, 4525 flow. Second operand 11 states and 231 transitions. [2024-06-04 14:45:49,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 445 transitions, 6099 flow [2024-06-04 14:45:54,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 445 transitions, 5852 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-04 14:45:54,801 INFO L231 Difference]: Finished difference. Result has 330 places, 391 transitions, 4641 flow [2024-06-04 14:45:54,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4278, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4641, PETRI_PLACES=330, PETRI_TRANSITIONS=391} [2024-06-04 14:45:54,802 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 285 predicate places. [2024-06-04 14:45:54,802 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 391 transitions, 4641 flow [2024-06-04 14:45:54,803 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 14:45:54,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:54,803 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 14:45:54,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-04 14:45:54,803 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:45:54,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:54,803 INFO L85 PathProgramCache]: Analyzing trace with hash -631027020, now seen corresponding path program 11 times [2024-06-04 14:45:54,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:54,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75967363] [2024-06-04 14:45:54,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:54,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:56,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:56,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:56,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75967363] [2024-06-04 14:45:56,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75967363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:56,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:56,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:56,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348157893] [2024-06-04 14:45:56,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:56,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:56,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:56,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:56,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:56,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:45:56,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 391 transitions, 4641 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 14:45:56,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:56,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:45:56,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:58,363 INFO L124 PetriNetUnfolderBase]: 4680/7330 cut-off events. [2024-06-04 14:45:58,363 INFO L125 PetriNetUnfolderBase]: For 2130214/2130216 co-relation queries the response was YES. [2024-06-04 14:45:58,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81788 conditions, 7330 events. 4680/7330 cut-off events. For 2130214/2130216 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 44011 event pairs, 914 based on Foata normal form. 16/7345 useless extension candidates. Maximal degree in co-relation 81630. Up to 5447 conditions per place. [2024-06-04 14:45:58,664 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 301 selfloop transitions, 123 changer transitions 0/448 dead transitions. [2024-06-04 14:45:58,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 448 transitions, 6283 flow [2024-06-04 14:45:58,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:58,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:58,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 231 transitions. [2024-06-04 14:45:58,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-06-04 14:45:58,666 INFO L175 Difference]: Start difference. First operand has 330 places, 391 transitions, 4641 flow. Second operand 11 states and 231 transitions. [2024-06-04 14:45:58,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 448 transitions, 6283 flow [2024-06-04 14:46:03,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 448 transitions, 6010 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-04 14:46:03,388 INFO L231 Difference]: Finished difference. Result has 333 places, 393 transitions, 4794 flow [2024-06-04 14:46:03,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4368, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4794, PETRI_PLACES=333, PETRI_TRANSITIONS=393} [2024-06-04 14:46:03,389 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 288 predicate places. [2024-06-04 14:46:03,389 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 393 transitions, 4794 flow [2024-06-04 14:46:03,389 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 14:46:03,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:03,389 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 14:46:03,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-04 14:46:03,390 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:46:03,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:03,390 INFO L85 PathProgramCache]: Analyzing trace with hash -630911700, now seen corresponding path program 12 times [2024-06-04 14:46:03,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:03,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830245282] [2024-06-04 14:46:03,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:03,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:05,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:05,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:05,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830245282] [2024-06-04 14:46:05,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830245282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:05,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:05,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:46:05,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442043038] [2024-06-04 14:46:05,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:05,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:46:05,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:05,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:46:05,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:46:05,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:46:05,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 393 transitions, 4794 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 14:46:05,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:05,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:46:05,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:07,401 INFO L124 PetriNetUnfolderBase]: 4849/7619 cut-off events. [2024-06-04 14:46:07,402 INFO L125 PetriNetUnfolderBase]: For 2293714/2293716 co-relation queries the response was YES. [2024-06-04 14:46:07,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86796 conditions, 7619 events. 4849/7619 cut-off events. For 2293714/2293716 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 46429 event pairs, 947 based on Foata normal form. 16/7634 useless extension candidates. Maximal degree in co-relation 86637. Up to 5893 conditions per place. [2024-06-04 14:46:07,526 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 309 selfloop transitions, 122 changer transitions 0/455 dead transitions. [2024-06-04 14:46:07,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 455 transitions, 6474 flow [2024-06-04 14:46:07,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:46:07,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:46:07,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 251 transitions. [2024-06-04 14:46:07,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4753787878787879 [2024-06-04 14:46:07,536 INFO L175 Difference]: Start difference. First operand has 333 places, 393 transitions, 4794 flow. Second operand 12 states and 251 transitions. [2024-06-04 14:46:07,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 455 transitions, 6474 flow [2024-06-04 14:46:13,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 455 transitions, 6236 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-04 14:46:13,635 INFO L231 Difference]: Finished difference. Result has 338 places, 395 transitions, 4986 flow [2024-06-04 14:46:13,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4584, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4986, PETRI_PLACES=338, PETRI_TRANSITIONS=395} [2024-06-04 14:46:13,635 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 293 predicate places. [2024-06-04 14:46:13,636 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 395 transitions, 4986 flow [2024-06-04 14:46:13,636 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 14:46:13,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:13,636 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 14:46:13,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-04 14:46:13,636 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:46:13,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:13,637 INFO L85 PathProgramCache]: Analyzing trace with hash -630907050, now seen corresponding path program 13 times [2024-06-04 14:46:13,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:13,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310371043] [2024-06-04 14:46:13,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:13,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:15,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:15,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:15,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310371043] [2024-06-04 14:46:15,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310371043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:15,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:15,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:46:15,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920932599] [2024-06-04 14:46:15,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:15,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:46:15,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:15,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:46:15,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:46:15,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:46:15,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 395 transitions, 4986 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 14:46:15,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:15,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:46:15,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:17,678 INFO L124 PetriNetUnfolderBase]: 4813/7553 cut-off events. [2024-06-04 14:46:17,678 INFO L125 PetriNetUnfolderBase]: For 2221514/2221516 co-relation queries the response was YES. [2024-06-04 14:46:17,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84084 conditions, 7553 events. 4813/7553 cut-off events. For 2221514/2221516 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 45953 event pairs, 960 based on Foata normal form. 20/7572 useless extension candidates. Maximal degree in co-relation 83923. Up to 6430 conditions per place. [2024-06-04 14:46:17,788 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 306 selfloop transitions, 113 changer transitions 0/443 dead transitions. [2024-06-04 14:46:17,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 443 transitions, 5998 flow [2024-06-04 14:46:17,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:46:17,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:46:17,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 225 transitions. [2024-06-04 14:46:17,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46487603305785125 [2024-06-04 14:46:17,790 INFO L175 Difference]: Start difference. First operand has 338 places, 395 transitions, 4986 flow. Second operand 11 states and 225 transitions. [2024-06-04 14:46:17,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 443 transitions, 5998 flow [2024-06-04 14:46:24,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 443 transitions, 5799 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-04 14:46:24,295 INFO L231 Difference]: Finished difference. Result has 341 places, 395 transitions, 5020 flow [2024-06-04 14:46:24,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4787, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5020, PETRI_PLACES=341, PETRI_TRANSITIONS=395} [2024-06-04 14:46:24,295 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 296 predicate places. [2024-06-04 14:46:24,295 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 395 transitions, 5020 flow [2024-06-04 14:46:24,296 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 14:46:24,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:24,296 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 14:46:24,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-04 14:46:24,296 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:46:24,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:24,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1655564130, now seen corresponding path program 14 times [2024-06-04 14:46:24,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:24,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463470624] [2024-06-04 14:46:24,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:24,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:25,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:25,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:25,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463470624] [2024-06-04 14:46:25,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463470624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:25,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:25,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:46:25,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816578076] [2024-06-04 14:46:25,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:25,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:46:25,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:25,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:46:25,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:46:26,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:46:26,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 395 transitions, 5020 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 14:46:26,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:26,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:46:26,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:28,045 INFO L124 PetriNetUnfolderBase]: 4905/7705 cut-off events. [2024-06-04 14:46:28,046 INFO L125 PetriNetUnfolderBase]: For 2283256/2283258 co-relation queries the response was YES. [2024-06-04 14:46:28,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85874 conditions, 7705 events. 4905/7705 cut-off events. For 2283256/2283258 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 47214 event pairs, 999 based on Foata normal form. 24/7728 useless extension candidates. Maximal degree in co-relation 85711. Up to 6690 conditions per place. [2024-06-04 14:46:28,170 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 330 selfloop transitions, 91 changer transitions 0/445 dead transitions. [2024-06-04 14:46:28,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 445 transitions, 6134 flow [2024-06-04 14:46:28,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:46:28,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:46:28,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-06-04 14:46:28,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4607438016528926 [2024-06-04 14:46:28,172 INFO L175 Difference]: Start difference. First operand has 341 places, 395 transitions, 5020 flow. Second operand 11 states and 223 transitions. [2024-06-04 14:46:28,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 445 transitions, 6134 flow [2024-06-04 14:46:35,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 445 transitions, 5850 flow, removed 14 selfloop flow, removed 12 redundant places. [2024-06-04 14:46:35,928 INFO L231 Difference]: Finished difference. Result has 340 places, 396 transitions, 5004 flow [2024-06-04 14:46:35,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4736, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5004, PETRI_PLACES=340, PETRI_TRANSITIONS=396} [2024-06-04 14:46:35,931 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 295 predicate places. [2024-06-04 14:46:35,931 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 396 transitions, 5004 flow [2024-06-04 14:46:35,931 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 14:46:35,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:35,931 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 14:46:35,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-04 14:46:35,932 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:46:35,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:35,932 INFO L85 PathProgramCache]: Analyzing trace with hash -460204620, now seen corresponding path program 15 times [2024-06-04 14:46:35,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:35,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234066898] [2024-06-04 14:46:35,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:35,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:37,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:37,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:37,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234066898] [2024-06-04 14:46:37,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234066898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:37,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:37,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:46:37,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351895612] [2024-06-04 14:46:37,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:37,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:46:37,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:37,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:46:37,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:46:37,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:46:37,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 396 transitions, 5004 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 14:46:37,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:37,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:46:37,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:39,689 INFO L124 PetriNetUnfolderBase]: 4980/7830 cut-off events. [2024-06-04 14:46:39,689 INFO L125 PetriNetUnfolderBase]: For 2311591/2311593 co-relation queries the response was YES. [2024-06-04 14:46:39,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87126 conditions, 7830 events. 4980/7830 cut-off events. For 2311591/2311593 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 48307 event pairs, 997 based on Foata normal form. 20/7849 useless extension candidates. Maximal degree in co-relation 86964. Up to 6764 conditions per place. [2024-06-04 14:46:40,063 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 317 selfloop transitions, 106 changer transitions 0/447 dead transitions. [2024-06-04 14:46:40,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 447 transitions, 6518 flow [2024-06-04 14:46:40,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:46:40,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:46:40,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 226 transitions. [2024-06-04 14:46:40,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4669421487603306 [2024-06-04 14:46:40,064 INFO L175 Difference]: Start difference. First operand has 340 places, 396 transitions, 5004 flow. Second operand 11 states and 226 transitions. [2024-06-04 14:46:40,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 447 transitions, 6518 flow [2024-06-04 14:46:46,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 447 transitions, 6314 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-04 14:46:46,860 INFO L231 Difference]: Finished difference. Result has 342 places, 397 transitions, 5099 flow [2024-06-04 14:46:46,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4800, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5099, PETRI_PLACES=342, PETRI_TRANSITIONS=397} [2024-06-04 14:46:46,860 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 297 predicate places. [2024-06-04 14:46:46,861 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 397 transitions, 5099 flow [2024-06-04 14:46:46,861 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 14:46:46,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:46,861 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 14:46:46,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-04 14:46:46,861 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:46:46,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:46,862 INFO L85 PathProgramCache]: Analyzing trace with hash 50727084, now seen corresponding path program 1 times [2024-06-04 14:46:46,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:46,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720727271] [2024-06-04 14:46:46,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:46,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:48,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:48,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:48,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720727271] [2024-06-04 14:46:48,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720727271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:48,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:48,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:46:48,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405328820] [2024-06-04 14:46:48,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:48,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:46:48,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:48,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:46:48,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:46:48,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-04 14:46:48,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 397 transitions, 5099 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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 14:46:48,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:48,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-04 14:46:48,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:50,668 INFO L124 PetriNetUnfolderBase]: 5671/8699 cut-off events. [2024-06-04 14:46:50,668 INFO L125 PetriNetUnfolderBase]: For 2333843/2333845 co-relation queries the response was YES. [2024-06-04 14:46:50,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93416 conditions, 8699 events. 5671/8699 cut-off events. For 2333843/2333845 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 51383 event pairs, 1271 based on Foata normal form. 4/8697 useless extension candidates. Maximal degree in co-relation 93253. Up to 8284 conditions per place. [2024-06-04 14:46:50,795 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 370 selfloop transitions, 48 changer transitions 0/440 dead transitions. [2024-06-04 14:46:50,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 440 transitions, 6160 flow [2024-06-04 14:46:50,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:46:50,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:46:50,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-04 14:46:50,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-04 14:46:50,797 INFO L175 Difference]: Start difference. First operand has 342 places, 397 transitions, 5099 flow. Second operand 10 states and 187 transitions. [2024-06-04 14:46:50,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 440 transitions, 6160 flow [2024-06-04 14:46:58,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 440 transitions, 5909 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-04 14:46:58,983 INFO L231 Difference]: Finished difference. Result has 344 places, 402 transitions, 5086 flow [2024-06-04 14:46:58,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4852, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5086, PETRI_PLACES=344, PETRI_TRANSITIONS=402} [2024-06-04 14:46:58,984 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 299 predicate places. [2024-06-04 14:46:58,984 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 402 transitions, 5086 flow [2024-06-04 14:46:58,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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 14:46:58,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:58,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:46:58,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-04 14:46:58,985 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:46:58,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:58,985 INFO L85 PathProgramCache]: Analyzing trace with hash -453775530, now seen corresponding path program 16 times [2024-06-04 14:46:58,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:58,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914018776] [2024-06-04 14:46:58,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:58,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:00,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:47:00,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:00,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914018776] [2024-06-04 14:47:00,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914018776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:00,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:00,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:47:00,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714193833] [2024-06-04 14:47:00,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:00,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:47:00,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:00,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:47:00,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:47:00,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:47:00,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 402 transitions, 5086 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 14:47:00,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:00,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:47:00,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:02,802 INFO L124 PetriNetUnfolderBase]: 5094/8023 cut-off events. [2024-06-04 14:47:02,803 INFO L125 PetriNetUnfolderBase]: For 2409836/2409838 co-relation queries the response was YES. [2024-06-04 14:47:02,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89741 conditions, 8023 events. 5094/8023 cut-off events. For 2409836/2409838 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 49938 event pairs, 1055 based on Foata normal form. 20/8037 useless extension candidates. Maximal degree in co-relation 89576. Up to 6995 conditions per place. [2024-06-04 14:47:02,930 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 325 selfloop transitions, 102 changer transitions 0/452 dead transitions. [2024-06-04 14:47:02,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 452 transitions, 6614 flow [2024-06-04 14:47:02,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:47:02,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:47:02,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-06-04 14:47:02,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4607438016528926 [2024-06-04 14:47:02,932 INFO L175 Difference]: Start difference. First operand has 344 places, 402 transitions, 5086 flow. Second operand 11 states and 223 transitions. [2024-06-04 14:47:02,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 452 transitions, 6614 flow [2024-06-04 14:47:10,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 452 transitions, 6425 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-04 14:47:10,319 INFO L231 Difference]: Finished difference. Result has 348 places, 403 transitions, 5190 flow [2024-06-04 14:47:10,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4897, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5190, PETRI_PLACES=348, PETRI_TRANSITIONS=403} [2024-06-04 14:47:10,320 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 303 predicate places. [2024-06-04 14:47:10,320 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 403 transitions, 5190 flow [2024-06-04 14:47:10,320 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 14:47:10,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:10,320 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 14:47:10,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-04 14:47:10,320 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:47:10,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:10,321 INFO L85 PathProgramCache]: Analyzing trace with hash -460209270, now seen corresponding path program 17 times [2024-06-04 14:47:10,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:10,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525509785] [2024-06-04 14:47:10,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:10,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:11,764 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 14:47:11,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:11,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525509785] [2024-06-04 14:47:11,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525509785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:11,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:11,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:47:11,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688371137] [2024-06-04 14:47:11,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:11,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:47:11,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:11,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:47:11,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:47:11,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:47:11,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 403 transitions, 5190 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 14:47:11,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:11,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:47:11,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:14,019 INFO L124 PetriNetUnfolderBase]: 5132/8112 cut-off events. [2024-06-04 14:47:14,019 INFO L125 PetriNetUnfolderBase]: For 2371868/2371870 co-relation queries the response was YES. [2024-06-04 14:47:14,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89637 conditions, 8112 events. 5132/8112 cut-off events. For 2371868/2371870 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 50665 event pairs, 1006 based on Foata normal form. 16/8119 useless extension candidates. Maximal degree in co-relation 89471. Up to 6643 conditions per place. [2024-06-04 14:47:14,136 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 321 selfloop transitions, 112 changer transitions 0/458 dead transitions. [2024-06-04 14:47:14,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 458 transitions, 6816 flow [2024-06-04 14:47:14,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:47:14,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:47:14,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 228 transitions. [2024-06-04 14:47:14,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47107438016528924 [2024-06-04 14:47:14,138 INFO L175 Difference]: Start difference. First operand has 348 places, 403 transitions, 5190 flow. Second operand 11 states and 228 transitions. [2024-06-04 14:47:14,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 458 transitions, 6816 flow [2024-06-04 14:47:23,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 458 transitions, 6560 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-04 14:47:23,402 INFO L231 Difference]: Finished difference. Result has 350 places, 405 transitions, 5314 flow [2024-06-04 14:47:23,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4934, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5314, PETRI_PLACES=350, PETRI_TRANSITIONS=405} [2024-06-04 14:47:23,402 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 305 predicate places. [2024-06-04 14:47:23,402 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 405 transitions, 5314 flow [2024-06-04 14:47:23,403 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 14:47:23,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:23,403 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 14:47:23,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-04 14:47:23,403 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 14:47:23,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:23,403 INFO L85 PathProgramCache]: Analyzing trace with hash 84771293, now seen corresponding path program 2 times [2024-06-04 14:47:23,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:23,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983867562] [2024-06-04 14:47:23,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:23,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:24,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:47:24,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:24,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983867562] [2024-06-04 14:47:24,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983867562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:24,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:24,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:47:24,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538955284] [2024-06-04 14:47:24,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:24,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:47:24,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:24,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:47:24,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:47:24,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-04 14:47:24,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 405 transitions, 5314 flow. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 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 14:47:24,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:24,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-04 14:47:24,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:26,774 INFO L124 PetriNetUnfolderBase]: 5664/8771 cut-off events. [2024-06-04 14:47:26,775 INFO L125 PetriNetUnfolderBase]: For 2346805/2346805 co-relation queries the response was YES. [2024-06-04 14:47:26,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93784 conditions, 8771 events. 5664/8771 cut-off events. For 2346805/2346805 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 52895 event pairs, 1432 based on Foata normal form. 1/8743 useless extension candidates. Maximal degree in co-relation 93616. Up to 8461 conditions per place. [2024-06-04 14:47:26,922 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 355 selfloop transitions, 29 changer transitions 0/425 dead transitions. [2024-06-04 14:47:26,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 425 transitions, 6168 flow [2024-06-04 14:47:26,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:47:26,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:47:26,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-04 14:47:26,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-04 14:47:26,923 INFO L175 Difference]: Start difference. First operand has 350 places, 405 transitions, 5314 flow. Second operand 8 states and 139 transitions. [2024-06-04 14:47:26,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 425 transitions, 6168 flow [2024-06-04 14:47:35,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 425 transitions, 5888 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-04 14:47:35,746 INFO L231 Difference]: Finished difference. Result has 350 places, 408 transitions, 5148 flow [2024-06-04 14:47:35,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5034, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5148, PETRI_PLACES=350, PETRI_TRANSITIONS=408} [2024-06-04 14:47:35,747 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 305 predicate places. [2024-06-04 14:47:35,747 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 408 transitions, 5148 flow [2024-06-04 14:47:35,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 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 14:47:35,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:35,747 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 14:47:35,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-04 14:47:35,747 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 14:47:35,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:35,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1712212897, now seen corresponding path program 3 times [2024-06-04 14:47:35,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:35,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374796642] [2024-06-04 14:47:35,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:35,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:36,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:47:36,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:36,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374796642] [2024-06-04 14:47:36,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374796642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:36,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:36,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:47:36,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049046520] [2024-06-04 14:47:36,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:36,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:47:36,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:36,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:47:36,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:47:36,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-04 14:47:36,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 408 transitions, 5148 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:36,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:36,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-04 14:47:36,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:38,837 INFO L124 PetriNetUnfolderBase]: 5661/8767 cut-off events. [2024-06-04 14:47:38,837 INFO L125 PetriNetUnfolderBase]: For 2356788/2356788 co-relation queries the response was YES. [2024-06-04 14:47:38,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92687 conditions, 8767 events. 5661/8767 cut-off events. For 2356788/2356788 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 52833 event pairs, 1432 based on Foata normal form. 1/8739 useless extension candidates. Maximal degree in co-relation 92518. Up to 8472 conditions per place. [2024-06-04 14:47:38,950 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 360 selfloop transitions, 24 changer transitions 0/425 dead transitions. [2024-06-04 14:47:38,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 425 transitions, 6192 flow [2024-06-04 14:47:38,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:47:38,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:47:38,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-04 14:47:38,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 14:47:38,975 INFO L175 Difference]: Start difference. First operand has 350 places, 408 transitions, 5148 flow. Second operand 7 states and 126 transitions. [2024-06-04 14:47:38,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 425 transitions, 6192 flow [2024-06-04 14:47:46,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 425 transitions, 6094 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-04 14:47:46,208 INFO L231 Difference]: Finished difference. Result has 352 places, 408 transitions, 5104 flow [2024-06-04 14:47:46,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5050, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5104, PETRI_PLACES=352, PETRI_TRANSITIONS=408} [2024-06-04 14:47:46,208 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 307 predicate places. [2024-06-04 14:47:46,209 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 408 transitions, 5104 flow [2024-06-04 14:47:46,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:46,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:46,209 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 14:47:46,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-04 14:47:46,209 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 14:47:46,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:46,209 INFO L85 PathProgramCache]: Analyzing trace with hash -426396583, now seen corresponding path program 4 times [2024-06-04 14:47:46,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:46,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732579760] [2024-06-04 14:47:46,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:46,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:47,040 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 14:47:47,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:47,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732579760] [2024-06-04 14:47:47,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732579760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:47,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:47,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:47:47,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527524372] [2024-06-04 14:47:47,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:47,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:47:47,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:47,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:47:47,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:47:47,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-04 14:47:47,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 408 transitions, 5104 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:47,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:47,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-04 14:47:47,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:49,061 INFO L124 PetriNetUnfolderBase]: 5666/8774 cut-off events. [2024-06-04 14:47:49,061 INFO L125 PetriNetUnfolderBase]: For 2392227/2392227 co-relation queries the response was YES. [2024-06-04 14:47:49,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93009 conditions, 8774 events. 5666/8774 cut-off events. For 2392227/2392227 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 52904 event pairs, 1432 based on Foata normal form. 1/8746 useless extension candidates. Maximal degree in co-relation 92839. Up to 8494 conditions per place. [2024-06-04 14:47:49,192 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 364 selfloop transitions, 19 changer transitions 0/424 dead transitions. [2024-06-04 14:47:49,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 424 transitions, 5959 flow [2024-06-04 14:47:49,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:47:49,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:47:49,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-04 14:47:49,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-04 14:47:49,193 INFO L175 Difference]: Start difference. First operand has 352 places, 408 transitions, 5104 flow. Second operand 7 states and 121 transitions. [2024-06-04 14:47:49,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 424 transitions, 5959 flow [2024-06-04 14:47:56,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 424 transitions, 5861 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-04 14:47:56,693 INFO L231 Difference]: Finished difference. Result has 353 places, 411 transitions, 5113 flow [2024-06-04 14:47:56,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5022, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5113, PETRI_PLACES=353, PETRI_TRANSITIONS=411} [2024-06-04 14:47:56,694 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 308 predicate places. [2024-06-04 14:47:56,694 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 411 transitions, 5113 flow [2024-06-04 14:47:56,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:56,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:56,694 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 14:47:56,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-04 14:47:56,694 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 14:47:56,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:56,695 INFO L85 PathProgramCache]: Analyzing trace with hash 870772023, now seen corresponding path program 5 times [2024-06-04 14:47:56,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:56,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814964789] [2024-06-04 14:47:56,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:56,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:57,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:47:57,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:57,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814964789] [2024-06-04 14:47:57,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814964789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:57,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:57,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:47:57,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465968189] [2024-06-04 14:47:57,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:57,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:47:57,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:57,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:47:57,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:47:57,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-04 14:47:57,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 411 transitions, 5113 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:57,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:57,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-04 14:47:57,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:59,503 INFO L124 PetriNetUnfolderBase]: 5663/8771 cut-off events. [2024-06-04 14:47:59,503 INFO L125 PetriNetUnfolderBase]: For 2420819/2420821 co-relation queries the response was YES. [2024-06-04 14:47:59,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93096 conditions, 8771 events. 5663/8771 cut-off events. For 2420819/2420821 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 52890 event pairs, 1435 based on Foata normal form. 3/8745 useless extension candidates. Maximal degree in co-relation 92926. Up to 8480 conditions per place. [2024-06-04 14:47:59,646 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 354 selfloop transitions, 27 changer transitions 0/422 dead transitions. [2024-06-04 14:47:59,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 422 transitions, 6139 flow [2024-06-04 14:47:59,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:47:59,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:47:59,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-04 14:47:59,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38961038961038963 [2024-06-04 14:47:59,647 INFO L175 Difference]: Start difference. First operand has 353 places, 411 transitions, 5113 flow. Second operand 7 states and 120 transitions. [2024-06-04 14:47:59,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 422 transitions, 6139 flow [2024-06-04 14:48:05,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 422 transitions, 6065 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-04 14:48:05,774 INFO L231 Difference]: Finished difference. Result has 355 places, 411 transitions, 5099 flow [2024-06-04 14:48:05,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5039, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5099, PETRI_PLACES=355, PETRI_TRANSITIONS=411} [2024-06-04 14:48:05,775 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 310 predicate places. [2024-06-04 14:48:05,775 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 411 transitions, 5099 flow [2024-06-04 14:48:05,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:05,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:05,775 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 14:48:05,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-04 14:48:05,775 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 14:48:05,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:05,776 INFO L85 PathProgramCache]: Analyzing trace with hash -640700575, now seen corresponding path program 6 times [2024-06-04 14:48:05,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:05,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057945591] [2024-06-04 14:48:05,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:05,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:06,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:48:06,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:06,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057945591] [2024-06-04 14:48:06,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057945591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:06,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:06,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:48:06,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194464450] [2024-06-04 14:48:06,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:06,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:48:06,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:06,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:48:06,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:48:06,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-04 14:48:06,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 411 transitions, 5099 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:06,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:06,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-04 14:48:06,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:09,053 INFO L124 PetriNetUnfolderBase]: 5660/8767 cut-off events. [2024-06-04 14:48:09,053 INFO L125 PetriNetUnfolderBase]: For 2449462/2449464 co-relation queries the response was YES. [2024-06-04 14:48:09,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93232 conditions, 8767 events. 5660/8767 cut-off events. For 2449462/2449464 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 52897 event pairs, 1439 based on Foata normal form. 3/8741 useless extension candidates. Maximal degree in co-relation 93061. Up to 8486 conditions per place. [2024-06-04 14:48:09,202 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 361 selfloop transitions, 19 changer transitions 0/421 dead transitions. [2024-06-04 14:48:09,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 421 transitions, 5883 flow [2024-06-04 14:48:09,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:48:09,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:48:09,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-04 14:48:09,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38311688311688313 [2024-06-04 14:48:09,203 INFO L175 Difference]: Start difference. First operand has 355 places, 411 transitions, 5099 flow. Second operand 7 states and 118 transitions. [2024-06-04 14:48:09,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 421 transitions, 5883 flow [2024-06-04 14:48:17,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 421 transitions, 5767 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-04 14:48:17,859 INFO L231 Difference]: Finished difference. Result has 356 places, 411 transitions, 5027 flow [2024-06-04 14:48:17,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4983, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5027, PETRI_PLACES=356, PETRI_TRANSITIONS=411} [2024-06-04 14:48:17,859 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 311 predicate places. [2024-06-04 14:48:17,859 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 411 transitions, 5027 flow [2024-06-04 14:48:17,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:17,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:17,859 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 14:48:17,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-04 14:48:17,860 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:48:17,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:17,860 INFO L85 PathProgramCache]: Analyzing trace with hash -589248994, now seen corresponding path program 18 times [2024-06-04 14:48:17,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:17,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290780480] [2024-06-04 14:48:17,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:17,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:17,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:19,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:48:19,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:19,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290780480] [2024-06-04 14:48:19,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290780480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:19,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:19,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:48:19,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770021675] [2024-06-04 14:48:19,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:19,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:48:19,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:19,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:48:19,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:48:19,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:48:19,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 411 transitions, 5027 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 14:48:19,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:19,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:48:19,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:21,715 INFO L124 PetriNetUnfolderBase]: 5220/8241 cut-off events. [2024-06-04 14:48:21,715 INFO L125 PetriNetUnfolderBase]: For 2614309/2614309 co-relation queries the response was YES. [2024-06-04 14:48:21,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91605 conditions, 8241 events. 5220/8241 cut-off events. For 2614309/2614309 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 51705 event pairs, 1161 based on Foata normal form. 20/8260 useless extension candidates. Maximal degree in co-relation 91433. Up to 7379 conditions per place. [2024-06-04 14:48:21,860 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 355 selfloop transitions, 77 changer transitions 0/459 dead transitions. [2024-06-04 14:48:21,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 459 transitions, 6589 flow [2024-06-04 14:48:21,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:48:21,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:48:21,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-06-04 14:48:21,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4524793388429752 [2024-06-04 14:48:21,862 INFO L175 Difference]: Start difference. First operand has 356 places, 411 transitions, 5027 flow. Second operand 11 states and 219 transitions. [2024-06-04 14:48:21,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 459 transitions, 6589 flow [2024-06-04 14:48:28,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 459 transitions, 6537 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-04 14:48:28,698 INFO L231 Difference]: Finished difference. Result has 361 places, 412 transitions, 5228 flow [2024-06-04 14:48:28,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4975, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5228, PETRI_PLACES=361, PETRI_TRANSITIONS=412} [2024-06-04 14:48:28,699 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 316 predicate places. [2024-06-04 14:48:28,699 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 412 transitions, 5228 flow [2024-06-04 14:48:28,699 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 14:48:28,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:28,699 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 14:48:28,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-04 14:48:28,699 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 14:48:28,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:28,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1774976692, now seen corresponding path program 19 times [2024-06-04 14:48:28,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:28,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831172212] [2024-06-04 14:48:28,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:28,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:30,229 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 14:48:30,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:30,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831172212] [2024-06-04 14:48:30,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831172212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:30,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:30,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:48:30,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611486745] [2024-06-04 14:48:30,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:30,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:48:30,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:30,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:48:30,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:48:30,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:48:30,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 412 transitions, 5228 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 14:48:30,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:30,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:48:30,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:33,142 INFO L124 PetriNetUnfolderBase]: 5287/8364 cut-off events. [2024-06-04 14:48:33,142 INFO L125 PetriNetUnfolderBase]: For 2677813/2677813 co-relation queries the response was YES. [2024-06-04 14:48:33,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93316 conditions, 8364 events. 5287/8364 cut-off events. For 2677813/2677813 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 52793 event pairs, 1206 based on Foata normal form. 24/8382 useless extension candidates. Maximal degree in co-relation 93143. Up to 7642 conditions per place. [2024-06-04 14:48:33,277 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 391 selfloop transitions, 40 changer transitions 0/458 dead transitions. [2024-06-04 14:48:33,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 458 transitions, 6366 flow [2024-06-04 14:48:33,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:48:33,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:48:33,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-06-04 14:48:33,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4380165289256198 [2024-06-04 14:48:33,285 INFO L175 Difference]: Start difference. First operand has 361 places, 412 transitions, 5228 flow. Second operand 11 states and 212 transitions. [2024-06-04 14:48:33,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 458 transitions, 6366 flow [2024-06-04 14:48:39,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 458 transitions, 6163 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-04 14:48:39,165 INFO L231 Difference]: Finished difference. Result has 363 places, 413 transitions, 5207 flow [2024-06-04 14:48:39,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5025, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5207, PETRI_PLACES=363, PETRI_TRANSITIONS=413} [2024-06-04 14:48:39,166 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 318 predicate places. [2024-06-04 14:48:39,166 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 413 transitions, 5207 flow [2024-06-04 14:48:39,166 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 14:48:39,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:39,166 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 14:48:39,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-04 14:48:39,167 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:48:39,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:39,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1632636118, now seen corresponding path program 20 times [2024-06-04 14:48:39,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:39,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025103079] [2024-06-04 14:48:39,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:39,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:40,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:48:40,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:40,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025103079] [2024-06-04 14:48:40,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025103079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:40,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:40,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:48:40,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859415623] [2024-06-04 14:48:40,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:40,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:48:40,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:40,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:48:40,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:48:40,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:48:40,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 413 transitions, 5207 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 14:48:40,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:40,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:48:40,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:43,783 INFO L124 PetriNetUnfolderBase]: 5481/8682 cut-off events. [2024-06-04 14:48:43,783 INFO L125 PetriNetUnfolderBase]: For 2848588/2848588 co-relation queries the response was YES. [2024-06-04 14:48:43,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99205 conditions, 8682 events. 5481/8682 cut-off events. For 2848588/2848588 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 55326 event pairs, 1209 based on Foata normal form. 16/8697 useless extension candidates. Maximal degree in co-relation 99031. Up to 7534 conditions per place. [2024-06-04 14:48:43,906 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 360 selfloop transitions, 80 changer transitions 0/467 dead transitions. [2024-06-04 14:48:43,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 467 transitions, 7365 flow [2024-06-04 14:48:43,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:48:43,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:48:43,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-06-04 14:48:43,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4607438016528926 [2024-06-04 14:48:43,908 INFO L175 Difference]: Start difference. First operand has 363 places, 413 transitions, 5207 flow. Second operand 11 states and 223 transitions. [2024-06-04 14:48:43,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 467 transitions, 7365 flow [2024-06-04 14:48:49,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 467 transitions, 7245 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-04 14:48:49,792 INFO L231 Difference]: Finished difference. Result has 365 places, 415 transitions, 5443 flow [2024-06-04 14:48:49,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5087, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5443, PETRI_PLACES=365, PETRI_TRANSITIONS=415} [2024-06-04 14:48:49,792 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 320 predicate places. [2024-06-04 14:48:49,792 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 415 transitions, 5443 flow [2024-06-04 14:48:49,792 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 14:48:49,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:49,793 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 14:48:49,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-04 14:48:49,793 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:48:49,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:49,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1805303638, now seen corresponding path program 21 times [2024-06-04 14:48:49,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:49,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378637828] [2024-06-04 14:48:49,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:49,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:51,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:48:51,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:51,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378637828] [2024-06-04 14:48:51,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378637828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:51,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:51,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:48:51,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045415610] [2024-06-04 14:48:51,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:51,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:48:51,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:51,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:48:51,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:48:51,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:48:51,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 415 transitions, 5443 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 14:48:51,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:51,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:48:51,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:54,220 INFO L124 PetriNetUnfolderBase]: 5531/8778 cut-off events. [2024-06-04 14:48:54,221 INFO L125 PetriNetUnfolderBase]: For 2898287/2898287 co-relation queries the response was YES. [2024-06-04 14:48:54,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100004 conditions, 8778 events. 5531/8778 cut-off events. For 2898287/2898287 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 56176 event pairs, 1271 based on Foata normal form. 20/8797 useless extension candidates. Maximal degree in co-relation 99829. Up to 7923 conditions per place. [2024-06-04 14:48:54,352 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 367 selfloop transitions, 68 changer transitions 0/462 dead transitions. [2024-06-04 14:48:54,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 462 transitions, 7025 flow [2024-06-04 14:48:54,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:48:54,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:48:54,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 217 transitions. [2024-06-04 14:48:54,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44834710743801653 [2024-06-04 14:48:54,354 INFO L175 Difference]: Start difference. First operand has 365 places, 415 transitions, 5443 flow. Second operand 11 states and 217 transitions. [2024-06-04 14:48:54,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 462 transitions, 7025 flow [2024-06-04 14:49:00,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 462 transitions, 6838 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-04 14:49:00,341 INFO L231 Difference]: Finished difference. Result has 369 places, 416 transitions, 5497 flow [2024-06-04 14:49:00,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5256, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5497, PETRI_PLACES=369, PETRI_TRANSITIONS=416} [2024-06-04 14:49:00,342 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 324 predicate places. [2024-06-04 14:49:00,342 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 416 transitions, 5497 flow [2024-06-04 14:49:00,342 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 14:49:00,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:00,343 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 14:49:00,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-04 14:49:00,344 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:00,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:00,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1632813748, now seen corresponding path program 22 times [2024-06-04 14:49:00,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:00,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980102123] [2024-06-04 14:49:00,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:00,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:01,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:01,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:01,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980102123] [2024-06-04 14:49:01,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980102123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:01,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:01,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:49:01,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979815783] [2024-06-04 14:49:01,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:01,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:49:01,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:01,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:49:01,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:49:02,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:49:02,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 416 transitions, 5497 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 14:49:02,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:02,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:49:02,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:04,989 INFO L124 PetriNetUnfolderBase]: 5553/8820 cut-off events. [2024-06-04 14:49:04,990 INFO L125 PetriNetUnfolderBase]: For 2902051/2902051 co-relation queries the response was YES. [2024-06-04 14:49:05,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98124 conditions, 8820 events. 5553/8820 cut-off events. For 2902051/2902051 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 56582 event pairs, 1256 based on Foata normal form. 36/8855 useless extension candidates. Maximal degree in co-relation 97947. Up to 7907 conditions per place. [2024-06-04 14:49:05,127 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 370 selfloop transitions, 65 changer transitions 0/462 dead transitions. [2024-06-04 14:49:05,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 462 transitions, 6649 flow [2024-06-04 14:49:05,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:49:05,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:49:05,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-04 14:49:05,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44214876033057854 [2024-06-04 14:49:05,128 INFO L175 Difference]: Start difference. First operand has 369 places, 416 transitions, 5497 flow. Second operand 11 states and 214 transitions. [2024-06-04 14:49:05,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 462 transitions, 6649 flow [2024-06-04 14:49:14,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 462 transitions, 6426 flow, removed 45 selfloop flow, removed 9 redundant places. [2024-06-04 14:49:14,806 INFO L231 Difference]: Finished difference. Result has 371 places, 417 transitions, 5513 flow [2024-06-04 14:49:14,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5274, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5513, PETRI_PLACES=371, PETRI_TRANSITIONS=417} [2024-06-04 14:49:14,807 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 326 predicate places. [2024-06-04 14:49:14,807 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 417 transitions, 5513 flow [2024-06-04 14:49:14,807 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 14:49:14,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:14,807 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 14:49:14,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-04 14:49:14,808 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:14,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:14,808 INFO L85 PathProgramCache]: Analyzing trace with hash 872870980, now seen corresponding path program 23 times [2024-06-04 14:49:14,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:14,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701214882] [2024-06-04 14:49:14,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:14,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:16,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:16,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:16,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701214882] [2024-06-04 14:49:16,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701214882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:16,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:16,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:49:16,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860745058] [2024-06-04 14:49:16,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:16,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:49:16,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:16,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:49:16,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:49:16,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:49:16,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 417 transitions, 5513 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 14:49:16,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:16,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:49:16,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:19,345 INFO L124 PetriNetUnfolderBase]: 5722/9109 cut-off events. [2024-06-04 14:49:19,346 INFO L125 PetriNetUnfolderBase]: For 2962881/2962881 co-relation queries the response was YES. [2024-06-04 14:49:19,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103385 conditions, 9109 events. 5722/9109 cut-off events. For 2962881/2962881 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 58925 event pairs, 1260 based on Foata normal form. 16/9124 useless extension candidates. Maximal degree in co-relation 103207. Up to 6926 conditions per place. [2024-06-04 14:49:19,497 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 329 selfloop transitions, 114 changer transitions 0/470 dead transitions. [2024-06-04 14:49:19,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 470 transitions, 7271 flow [2024-06-04 14:49:19,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:49:19,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:49:19,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 221 transitions. [2024-06-04 14:49:19,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45661157024793386 [2024-06-04 14:49:19,501 INFO L175 Difference]: Start difference. First operand has 371 places, 417 transitions, 5513 flow. Second operand 11 states and 221 transitions. [2024-06-04 14:49:19,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 470 transitions, 7271 flow [2024-06-04 14:49:30,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 470 transitions, 7094 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-04 14:49:30,527 INFO L231 Difference]: Finished difference. Result has 373 places, 419 transitions, 5772 flow [2024-06-04 14:49:30,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5336, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5772, PETRI_PLACES=373, PETRI_TRANSITIONS=419} [2024-06-04 14:49:30,528 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 328 predicate places. [2024-06-04 14:49:30,528 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 419 transitions, 5772 flow [2024-06-04 14:49:30,528 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 14:49:30,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:30,528 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 14:49:30,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-04 14:49:30,528 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:30,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:30,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1805549902, now seen corresponding path program 2 times [2024-06-04 14:49:30,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:30,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386464148] [2024-06-04 14:49:30,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:30,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:32,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:32,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:32,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386464148] [2024-06-04 14:49:32,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386464148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:32,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:32,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:49:32,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898262376] [2024-06-04 14:49:32,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:32,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:49:32,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:32,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:49:32,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:49:32,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-04 14:49:32,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 419 transitions, 5772 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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 14:49:32,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:32,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-04 14:49:32,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:35,081 INFO L124 PetriNetUnfolderBase]: 6523/10119 cut-off events. [2024-06-04 14:49:35,082 INFO L125 PetriNetUnfolderBase]: For 2988728/2988728 co-relation queries the response was YES. [2024-06-04 14:49:35,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110643 conditions, 10119 events. 6523/10119 cut-off events. For 2988728/2988728 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 62825 event pairs, 1595 based on Foata normal form. 4/10122 useless extension candidates. Maximal degree in co-relation 110464. Up to 9762 conditions per place. [2024-06-04 14:49:35,234 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 396 selfloop transitions, 39 changer transitions 0/459 dead transitions. [2024-06-04 14:49:35,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 459 transitions, 6883 flow [2024-06-04 14:49:35,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:49:35,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:49:35,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-04 14:49:35,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41363636363636364 [2024-06-04 14:49:35,236 INFO L175 Difference]: Start difference. First operand has 373 places, 419 transitions, 5772 flow. Second operand 10 states and 182 transitions. [2024-06-04 14:49:35,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 459 transitions, 6883 flow [2024-06-04 14:49:46,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 459 transitions, 6660 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-04 14:49:46,808 INFO L231 Difference]: Finished difference. Result has 377 places, 424 transitions, 5791 flow [2024-06-04 14:49:46,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5552, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5791, PETRI_PLACES=377, PETRI_TRANSITIONS=424} [2024-06-04 14:49:46,809 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 332 predicate places. [2024-06-04 14:49:46,809 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 424 transitions, 5791 flow [2024-06-04 14:49:46,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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 14:49:46,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:46,809 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 14:49:46,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-04 14:49:46,809 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:46,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:46,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1628172118, now seen corresponding path program 24 times [2024-06-04 14:49:46,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:46,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655624031] [2024-06-04 14:49:46,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:46,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:46,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:48,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:48,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:48,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655624031] [2024-06-04 14:49:48,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655624031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:48,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:48,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:49:48,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786403580] [2024-06-04 14:49:48,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:48,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:49:48,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:48,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:49:48,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:49:48,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:49:48,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 424 transitions, 5791 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 14:49:48,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:48,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:49:48,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:51,262 INFO L124 PetriNetUnfolderBase]: 5845/9312 cut-off events. [2024-06-04 14:49:51,263 INFO L125 PetriNetUnfolderBase]: For 3075173/3075173 co-relation queries the response was YES. [2024-06-04 14:49:51,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105607 conditions, 9312 events. 5845/9312 cut-off events. For 3075173/3075173 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 60457 event pairs, 1302 based on Foata normal form. 20/9331 useless extension candidates. Maximal degree in co-relation 105425. Up to 8165 conditions per place. [2024-06-04 14:49:51,404 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 331 selfloop transitions, 114 changer transitions 0/473 dead transitions. [2024-06-04 14:49:51,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 473 transitions, 7869 flow [2024-06-04 14:49:51,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:49:51,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:49:51,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-06-04 14:49:51,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:49:51,406 INFO L175 Difference]: Start difference. First operand has 377 places, 424 transitions, 5791 flow. Second operand 11 states and 220 transitions. [2024-06-04 14:49:51,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 473 transitions, 7869 flow [2024-06-04 14:50:03,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 473 transitions, 7680 flow, removed 58 selfloop flow, removed 7 redundant places. [2024-06-04 14:50:03,192 INFO L231 Difference]: Finished difference. Result has 381 places, 425 transitions, 5925 flow [2024-06-04 14:50:03,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5602, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5925, PETRI_PLACES=381, PETRI_TRANSITIONS=425} [2024-06-04 14:50:03,192 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 336 predicate places. [2024-06-04 14:50:03,193 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 425 transitions, 5925 flow [2024-06-04 14:50:03,193 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 14:50:03,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:03,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:03,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-04 14:50:03,193 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:03,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:03,194 INFO L85 PathProgramCache]: Analyzing trace with hash -71621372, now seen corresponding path program 25 times [2024-06-04 14:50:03,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:03,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990048674] [2024-06-04 14:50:03,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:03,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:04,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:04,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:04,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990048674] [2024-06-04 14:50:04,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990048674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:04,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:04,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:50:04,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005619351] [2024-06-04 14:50:04,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:04,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:50:04,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:04,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:50:04,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:50:04,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:50:04,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 425 transitions, 5925 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 14:50:04,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:04,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:50:04,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:07,792 INFO L124 PetriNetUnfolderBase]: 5879/9381 cut-off events. [2024-06-04 14:50:07,792 INFO L125 PetriNetUnfolderBase]: For 3095074/3095074 co-relation queries the response was YES. [2024-06-04 14:50:08,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106964 conditions, 9381 events. 5879/9381 cut-off events. For 3095074/3095074 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 61174 event pairs, 1311 based on Foata normal form. 16/9396 useless extension candidates. Maximal degree in co-relation 106781. Up to 8127 conditions per place. [2024-06-04 14:50:08,083 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 334 selfloop transitions, 116 changer transitions 0/478 dead transitions. [2024-06-04 14:50:08,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 478 transitions, 8051 flow [2024-06-04 14:50:08,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:50:08,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:50:08,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 224 transitions. [2024-06-04 14:50:08,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4628099173553719 [2024-06-04 14:50:08,085 INFO L175 Difference]: Start difference. First operand has 381 places, 425 transitions, 5925 flow. Second operand 11 states and 224 transitions. [2024-06-04 14:50:08,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 478 transitions, 8051 flow [2024-06-04 14:50:19,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 478 transitions, 7780 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-04 14:50:19,389 INFO L231 Difference]: Finished difference. Result has 383 places, 426 transitions, 5982 flow [2024-06-04 14:50:19,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5654, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5982, PETRI_PLACES=383, PETRI_TRANSITIONS=426} [2024-06-04 14:50:19,390 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 338 predicate places. [2024-06-04 14:50:19,390 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 426 transitions, 5982 flow [2024-06-04 14:50:19,390 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 14:50:19,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:19,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:19,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-04 14:50:19,390 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:19,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:19,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1118236686, now seen corresponding path program 26 times [2024-06-04 14:50:19,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:19,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861828067] [2024-06-04 14:50:19,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:19,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:20,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:20,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:20,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861828067] [2024-06-04 14:50:20,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861828067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:20,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:20,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:50:20,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701060645] [2024-06-04 14:50:20,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:20,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:50:20,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:20,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:50:20,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:50:20,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:50:20,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 426 transitions, 5982 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 14:50:20,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:20,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:50:20,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:23,956 INFO L124 PetriNetUnfolderBase]: 6073/9709 cut-off events. [2024-06-04 14:50:23,956 INFO L125 PetriNetUnfolderBase]: For 3340915/3340915 co-relation queries the response was YES. [2024-06-04 14:50:24,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113363 conditions, 9709 events. 6073/9709 cut-off events. For 3340915/3340915 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 64005 event pairs, 1395 based on Foata normal form. 16/9719 useless extension candidates. Maximal degree in co-relation 113179. Up to 8459 conditions per place. [2024-06-04 14:50:24,103 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 378 selfloop transitions, 73 changer transitions 0/479 dead transitions. [2024-06-04 14:50:24,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 479 transitions, 7754 flow [2024-06-04 14:50:24,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:50:24,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:50:24,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2024-06-04 14:50:24,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45867768595041325 [2024-06-04 14:50:24,105 INFO L175 Difference]: Start difference. First operand has 383 places, 426 transitions, 5982 flow. Second operand 11 states and 222 transitions. [2024-06-04 14:50:24,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 479 transitions, 7754 flow [2024-06-04 14:50:36,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 479 transitions, 7458 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-04 14:50:36,474 INFO L231 Difference]: Finished difference. Result has 385 places, 428 transitions, 6020 flow [2024-06-04 14:50:36,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5686, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6020, PETRI_PLACES=385, PETRI_TRANSITIONS=428} [2024-06-04 14:50:36,474 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 340 predicate places. [2024-06-04 14:50:36,475 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 428 transitions, 6020 flow [2024-06-04 14:50:36,475 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 14:50:36,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:36,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:36,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-04 14:50:36,475 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:36,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:36,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1798874548, now seen corresponding path program 27 times [2024-06-04 14:50:36,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:36,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192206017] [2024-06-04 14:50:36,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:36,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:37,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:37,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:37,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192206017] [2024-06-04 14:50:37,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192206017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:37,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:37,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:50:37,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055228849] [2024-06-04 14:50:37,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:37,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:50:37,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:37,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:50:37,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:50:38,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:50:38,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 428 transitions, 6020 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 14:50:38,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:38,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:50:38,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:41,283 INFO L124 PetriNetUnfolderBase]: 6173/9863 cut-off events. [2024-06-04 14:50:41,284 INFO L125 PetriNetUnfolderBase]: For 3459877/3459877 co-relation queries the response was YES. [2024-06-04 14:50:41,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115258 conditions, 9863 events. 6173/9863 cut-off events. For 3459877/3459877 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 65208 event pairs, 1439 based on Foata normal form. 20/9877 useless extension candidates. Maximal degree in co-relation 115073. Up to 8928 conditions per place. [2024-06-04 14:50:41,432 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 371 selfloop transitions, 77 changer transitions 0/476 dead transitions. [2024-06-04 14:50:41,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 476 transitions, 7656 flow [2024-06-04 14:50:41,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:50:41,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:50:41,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-06-04 14:50:41,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:50:41,433 INFO L175 Difference]: Start difference. First operand has 385 places, 428 transitions, 6020 flow. Second operand 11 states and 220 transitions. [2024-06-04 14:50:41,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 476 transitions, 7656 flow [2024-06-04 14:50:50,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 476 transitions, 7502 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-04 14:50:50,787 INFO L231 Difference]: Finished difference. Result has 389 places, 429 transitions, 6121 flow [2024-06-04 14:50:50,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5868, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6121, PETRI_PLACES=389, PETRI_TRANSITIONS=429} [2024-06-04 14:50:50,788 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 344 predicate places. [2024-06-04 14:50:50,788 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 429 transitions, 6121 flow [2024-06-04 14:50:50,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:50,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:50,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:50,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-04 14:50:50,789 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:50,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:50,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1799047528, now seen corresponding path program 28 times [2024-06-04 14:50:50,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:50,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053627627] [2024-06-04 14:50:50,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:50,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:52,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:52,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:52,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053627627] [2024-06-04 14:50:52,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053627627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:52,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:52,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:50:52,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025576793] [2024-06-04 14:50:52,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:52,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:50:52,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:52,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:50:52,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:50:52,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:50:52,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 429 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 14:50:52,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:52,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:50:52,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:55,344 INFO L124 PetriNetUnfolderBase]: 6190/9908 cut-off events. [2024-06-04 14:50:55,344 INFO L125 PetriNetUnfolderBase]: For 3447677/3447677 co-relation queries the response was YES. [2024-06-04 14:50:55,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114529 conditions, 9908 events. 6190/9908 cut-off events. For 3447677/3447677 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 65664 event pairs, 1451 based on Foata normal form. 24/9926 useless extension candidates. Maximal degree in co-relation 114342. Up to 9014 conditions per place. [2024-06-04 14:50:55,645 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 386 selfloop transitions, 62 changer transitions 0/476 dead transitions. [2024-06-04 14:50:55,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 476 transitions, 7297 flow [2024-06-04 14:50:55,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:50:55,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:50:55,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 217 transitions. [2024-06-04 14:50:55,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44834710743801653 [2024-06-04 14:50:55,647 INFO L175 Difference]: Start difference. First operand has 389 places, 429 transitions, 6121 flow. Second operand 11 states and 217 transitions. [2024-06-04 14:50:55,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 476 transitions, 7297 flow [2024-06-04 14:51:08,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 476 transitions, 7098 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-04 14:51:08,936 INFO L231 Difference]: Finished difference. Result has 391 places, 430 transitions, 6148 flow [2024-06-04 14:51:08,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5922, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6148, PETRI_PLACES=391, PETRI_TRANSITIONS=430} [2024-06-04 14:51:08,936 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 346 predicate places. [2024-06-04 14:51:08,936 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 430 transitions, 6148 flow [2024-06-04 14:51:08,936 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 14:51:08,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:08,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:08,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-04 14:51:08,937 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 14:51:08,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:08,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1775222956, now seen corresponding path program 3 times [2024-06-04 14:51:08,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:08,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693387848] [2024-06-04 14:51:08,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:08,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:10,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:51:10,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:10,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693387848] [2024-06-04 14:51:10,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693387848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:10,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:10,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:51:10,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635266520] [2024-06-04 14:51:10,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:10,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:51:10,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:10,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:51:10,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:51:10,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-04 14:51:10,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 430 transitions, 6148 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:10,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:10,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-04 14:51:10,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:13,796 INFO L124 PetriNetUnfolderBase]: 7069/11021 cut-off events. [2024-06-04 14:51:13,797 INFO L125 PetriNetUnfolderBase]: For 3399758/3399758 co-relation queries the response was YES. [2024-06-04 14:51:13,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122234 conditions, 11021 events. 7069/11021 cut-off events. For 3399758/3399758 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 70079 event pairs, 1771 based on Foata normal form. 4/11024 useless extension candidates. Maximal degree in co-relation 122046. Up to 10709 conditions per place. [2024-06-04 14:51:13,957 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 414 selfloop transitions, 32 changer transitions 0/470 dead transitions. [2024-06-04 14:51:13,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 470 transitions, 7290 flow [2024-06-04 14:51:13,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:51:13,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:51:13,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-04 14:51:13,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 14:51:13,959 INFO L175 Difference]: Start difference. First operand has 391 places, 430 transitions, 6148 flow. Second operand 10 states and 180 transitions. [2024-06-04 14:51:13,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 470 transitions, 7290 flow [2024-06-04 14:51:25,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 470 transitions, 7128 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-04 14:51:25,389 INFO L231 Difference]: Finished difference. Result has 393 places, 435 transitions, 6221 flow [2024-06-04 14:51:25,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5988, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6221, PETRI_PLACES=393, PETRI_TRANSITIONS=435} [2024-06-04 14:51:25,389 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 348 predicate places. [2024-06-04 14:51:25,390 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 435 transitions, 6221 flow [2024-06-04 14:51:25,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:25,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:25,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:25,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-04 14:51:25,390 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 14:51:25,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:25,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1136557910, now seen corresponding path program 29 times [2024-06-04 14:51:25,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:25,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622338837] [2024-06-04 14:51:25,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:25,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:25,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:26,788 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 14:51:26,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:26,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622338837] [2024-06-04 14:51:26,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622338837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:26,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:26,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:51:26,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732339472] [2024-06-04 14:51:26,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:26,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:51:26,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:26,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:51:26,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:51:27,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:51:27,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 435 transitions, 6221 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 14:51:27,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:27,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:51:27,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:30,295 INFO L124 PetriNetUnfolderBase]: 6373/10213 cut-off events. [2024-06-04 14:51:30,295 INFO L125 PetriNetUnfolderBase]: For 3658060/3658060 co-relation queries the response was YES. [2024-06-04 14:51:30,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117472 conditions, 10213 events. 6373/10213 cut-off events. For 3658060/3658060 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 68210 event pairs, 1499 based on Foata normal form. 42/10254 useless extension candidates. Maximal degree in co-relation 117282. Up to 9358 conditions per place. [2024-06-04 14:51:30,651 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 412 selfloop transitions, 41 changer transitions 0/482 dead transitions. [2024-06-04 14:51:30,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 482 transitions, 7977 flow [2024-06-04 14:51:30,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:51:30,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:51:30,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2024-06-04 14:51:30,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4359504132231405 [2024-06-04 14:51:30,653 INFO L175 Difference]: Start difference. First operand has 393 places, 435 transitions, 6221 flow. Second operand 11 states and 211 transitions. [2024-06-04 14:51:30,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 482 transitions, 7977 flow [2024-06-04 14:51:44,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 482 transitions, 7736 flow, removed 91 selfloop flow, removed 7 redundant places. [2024-06-04 14:51:44,661 INFO L231 Difference]: Finished difference. Result has 398 places, 437 transitions, 6286 flow [2024-06-04 14:51:44,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5980, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6286, PETRI_PLACES=398, PETRI_TRANSITIONS=437} [2024-06-04 14:51:44,684 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 353 predicate places. [2024-06-04 14:51:44,684 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 437 transitions, 6286 flow [2024-06-04 14:51:44,684 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 14:51:44,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:44,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:44,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-04 14:51:44,685 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 14:51:44,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:44,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1768720582, now seen corresponding path program 30 times [2024-06-04 14:51:44,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:44,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594951383] [2024-06-04 14:51:44,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:44,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:46,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:51:46,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:46,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594951383] [2024-06-04 14:51:46,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594951383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:46,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:46,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:51:46,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717149943] [2024-06-04 14:51:46,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:46,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:51:46,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:46,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:51:46,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:51:46,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:51:46,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 437 transitions, 6286 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 14:51:46,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:46,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:51:46,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand